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[PATCH v2 16/52] irqchip/gic-v3-its: Add VLPI configuration hook

From Marc Zyngier <marc.zyngier@arm.com>
Newsgroups linux.kernel
Subject [PATCH v2 16/52] irqchip/gic-v3-its: Add VLPI configuration hook
Date 2017-06-28 17:20 +0200
Message-ID <tXmV6-8uj-77@gated-at.bofh.it> (permalink)
References <tXmLn-8q5-7@gated-at.bofh.it>
Organization linux.* mail to news gateway

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Add the skeleton irq_set_vcpu_affinity method that will be used
to configure VLPIs.

Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
---
 drivers/irqchip/irq-gic-v3-its.c | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c
index 25e53958a618..c02e1e6cd169 100644
--- a/drivers/irqchip/irq-gic-v3-its.c
+++ b/drivers/irqchip/irq-gic-v3-its.c
@@ -36,6 +36,7 @@
 
 #include <linux/irqchip.h>
 #include <linux/irqchip/arm-gic-v3.h>
+#include <linux/irqchip/arm-gic-v4.h>
 
 #include <asm/cputype.h>
 #include <asm/exception.h>
@@ -779,6 +780,28 @@ static int its_irq_set_irqchip_state(struct irq_data *d,
 	return 0;
 }
 
+static int its_irq_set_vcpu_affinity(struct irq_data *d, void *vcpu_info)
+{
+	struct its_device *its_dev = irq_data_get_irq_chip_data(d);
+	struct its_cmd_info *info = vcpu_info;
+
+	/* Need a v4 ITS */
+	if (!its_dev->its->is_v4 || !info)
+		return -EINVAL;
+
+	switch (info->cmd_type) {
+	case MAP_VLPI:
+
+	case GET_VLPI:
+
+	case PROP_UPDATE_VLPI:
+	case PROP_UPDATE_AND_INV_VLPI:
+
+	default:
+		return -EINVAL;
+	}
+}
+
 static struct irq_chip its_irq_chip = {
 	.name			= "ITS",
 	.irq_mask		= its_mask_irq,
@@ -787,6 +810,7 @@ static struct irq_chip its_irq_chip = {
 	.irq_set_affinity	= its_set_affinity,
 	.irq_compose_msi_msg	= its_irq_compose_msi_msg,
 	.irq_set_irqchip_state	= its_irq_set_irqchip_state,
+	.irq_set_vcpu_affinity	= its_irq_set_vcpu_affinity,
 };
 
 /*
-- 
2.11.0

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[PATCH v2 00/52] irqchip: KVM: Add support for GICv4 Marc Zyngier <marc.zyngier@arm.com> - 2017-06-28 17:10 +0200
  [PATCH v2 07/52] irqchip/gic-v3-its: Implement irq_set_irqchip_state for pending state Marc Zyngier <marc.zyngier@arm.com> - 2017-06-28 17:10 +0200
  [PATCH v2 39/52] KVM: arm/arm64: GICv4: Wire mapping/unmapping of VLPIs in VFIO irq bypass Marc Zyngier <marc.zyngier@arm.com> - 2017-06-28 17:10 +0200
  [PATCH v2 51/52] KVM: arm/arm64: GICv4: Use pending_last as a scheduling hint Marc Zyngier <marc.zyngier@arm.com> - 2017-06-28 17:10 +0200
  [PATCH v2 30/52] irqchip/gic-v4: Add VPE command interface Marc Zyngier <marc.zyngier@arm.com> - 2017-06-28 17:10 +0200
  [PATCH v2 48/52] KVM: arm/arm64: GICv4: Add doorbell interrupt handling Marc Zyngier <marc.zyngier@arm.com> - 2017-06-28 17:10 +0200
  [PATCH v2 28/52] irqchip/gic-v3-its: Set implementation defined bit to enable VLPIs Marc Zyngier <marc.zyngier@arm.com> - 2017-06-28 17:10 +0200
  [PATCH v2 43/52] KVM: arm/arm64: GICv4: Handle CLEAR applied to a VLPI Marc Zyngier <marc.zyngier@arm.com> - 2017-06-28 17:10 +0200
  [PATCH v2 44/52] KVM: arm/arm64: GICv4: Handle MOVALL applied to a vPE Marc Zyngier <marc.zyngier@arm.com> - 2017-06-28 17:10 +0200
  [PATCH v2 41/52] KVM: arm/arm64: GICv4: Unmap VLPI when freeing an LPI Marc Zyngier <marc.zyngier@arm.com> - 2017-06-28 17:10 +0200
  [PATCH v2 50/52] KVM: arm/arm64: GICv4: Enable virtual cpuif if VLPIs can be delivered Marc Zyngier <marc.zyngier@arm.com> - 2017-06-28 17:10 +0200
  [PATCH v2 49/52] KVM: arm/arm64: GICv4: Hook vPE scheduling into vgic flush/sync Marc Zyngier <marc.zyngier@arm.com> - 2017-06-28 17:10 +0200
  [PATCH v2 37/52] KVM: arm/arm64: GICv4: Add init and teardown of the vPE irq domain Marc Zyngier <marc.zyngier@arm.com> - 2017-06-28 17:10 +0200
  [PATCH v2 52/52] KVM: arm/arm64: GICv4: Enable VLPI support Marc Zyngier <marc.zyngier@arm.com> - 2017-06-28 17:10 +0200
  [PATCH v2 35/52] KVM: arm/arm64: vgic: Move kvm_vgic_destroy call around Marc Zyngier <marc.zyngier@arm.com> - 2017-06-28 17:10 +0200
  [PATCH v2 08/52] irqchip/gic-v3-its: Split out property table allocation Marc Zyngier <marc.zyngier@arm.com> - 2017-06-28 17:10 +0200
  [PATCH v2 47/52] KVM: arm/arm64: GICv4: Propagate VLPI properties at map time Marc Zyngier <marc.zyngier@arm.com> - 2017-06-28 17:20 +0200
  [PATCH v2 19/52] irqchip/gic-v3-its: Add VPE domain infrastructure Marc Zyngier <marc.zyngier@arm.com> - 2017-06-28 17:20 +0200
  [PATCH v2 15/52] irqchip/gic-v3-its: Add GICv4 ITS command definitions Marc Zyngier <marc.zyngier@arm.com> - 2017-06-28 17:20 +0200
  [PATCH v2 42/52] KVM: arm/arm64: GICv4: Handle MOVI applied to a VLPI Marc Zyngier <marc.zyngier@arm.com> - 2017-06-28 17:20 +0200
  [PATCH v2 38/52] KVM: arm/arm64: GICv4: Wire init/teardown of per-VM support Marc Zyngier <marc.zyngier@arm.com> - 2017-06-28 17:20 +0200
  [PATCH v2 32/52] irqchip/gic-v4: Add some basic documentation Marc Zyngier <marc.zyngier@arm.com> - 2017-06-28 17:20 +0200
  [PATCH v2 24/52] irqchip/gic-v3-its: Add VPE invalidation hook Marc Zyngier <marc.zyngier@arm.com> - 2017-06-28 17:20 +0200
  [PATCH v2 33/52] irqchip/gic-v4: Enable low-level GICv4 operations Marc Zyngier <marc.zyngier@arm.com> - 2017-06-28 17:20 +0200
  [PATCH v2 29/52] irqchip/gic-v4: Add per-VM VPE domain creation Marc Zyngier <marc.zyngier@arm.com> - 2017-06-28 17:20 +0200
  [PATCH v2 22/52] irqchip/gic-v3-its: Add VPENDBASER/VPROPBASER accessors Marc Zyngier <marc.zyngier@arm.com> - 2017-06-28 17:20 +0200
  [PATCH v2 13/52] irqchip/gic-v3-its: Generalize LPI configuration Marc Zyngier <marc.zyngier@arm.com> - 2017-06-28 17:20 +0200
  [PATCH v2 40/52] KVM: arm/arm64: GICv4: Handle INT command applied to a VLPI Marc Zyngier <marc.zyngier@arm.com> - 2017-06-28 17:20 +0200
  [PATCH v2 23/52] irqchip/gic-v3-its: Add VPE scheduling Marc Zyngier <marc.zyngier@arm.com> - 2017-06-28 17:20 +0200
  [PATCH v2 17/52] irqchip/gic-v3-its: Add VLPI map/unmap operations Marc Zyngier <marc.zyngier@arm.com> - 2017-06-28 17:20 +0200
  [PATCH v2 46/52] KVM: arm/arm64: GICv4: Handle INVALL applied to a vPE Marc Zyngier <marc.zyngier@arm.com> - 2017-06-28 17:20 +0200
  [PATCH v2 12/52] irqchip/gic-v3-its: Generalize device table allocation Marc Zyngier <marc.zyngier@arm.com> - 2017-06-28 17:20 +0200
  [PATCH v2 09/52] irqchip/gic-v3-its: Allow use of indirect VCPU tables Marc Zyngier <marc.zyngier@arm.com> - 2017-06-28 17:20 +0200
  [PATCH v2 14/52] irqchip/gic-v4: Add management structure definitions Marc Zyngier <marc.zyngier@arm.com> - 2017-06-28 17:20 +0200
  [PATCH v2 11/52] irqchip/gic-v3-its: Rework LPI freeing Marc Zyngier <marc.zyngier@arm.com> - 2017-06-28 17:20 +0200
  [PATCH v2 31/52] irqchip/gic-v4: Add VLPI configuration interface Marc Zyngier <marc.zyngier@arm.com> - 2017-06-28 17:20 +0200
  [PATCH v2 21/52] irqchip/gic-v3-its: Add VPE irq domain [de]activation Marc Zyngier <marc.zyngier@arm.com> - 2017-06-28 17:20 +0200
  [PATCH v2 25/52] irqchip/gic-v3-its: Add VPE affinity changes Marc Zyngier <marc.zyngier@arm.com> - 2017-06-28 17:20 +0200
  [PATCH v2 18/52] irqchip/gic-v3-its: Add VLPI configuration handling Marc Zyngier <marc.zyngier@arm.com> - 2017-06-28 17:20 +0200
  [PATCH v2 16/52] irqchip/gic-v3-its: Add VLPI configuration hook Marc Zyngier <marc.zyngier@arm.com> - 2017-06-28 17:20 +0200
  [PATCH v2 20/52] irqchip/gic-v3-its: Add VPE irq domain allocation/teardown Marc Zyngier <marc.zyngier@arm.com> - 2017-06-28 17:20 +0200
  [PATCH v2 36/52] KVM: arm/arm64: vITS: Add MSI translation helpers Marc Zyngier <marc.zyngier@arm.com> - 2017-06-28 17:20 +0200
  [PATCH v2 10/52] irqchip/gic-v3-its: Split out pending table allocation Marc Zyngier <marc.zyngier@arm.com> - 2017-06-28 17:30 +0200
  [PATCH v2 02/52] irqchip/gic-v3: Add redistributor iterator Marc Zyngier <marc.zyngier@arm.com> - 2017-06-28 17:30 +0200
  [PATCH v2 06/52] irqchip/gic-v3-its: Macro-ize its_send_single_command Marc Zyngier <marc.zyngier@arm.com> - 2017-06-28 17:30 +0200
  [PATCH v2 04/52] irqchip/gic-v3-its: Move LPI definitions around Marc Zyngier <marc.zyngier@arm.com> - 2017-06-28 17:30 +0200
  [PATCH v2 05/52] irqchip/gic-v3-its: Add probing for VLPI properties Marc Zyngier <marc.zyngier@arm.com> - 2017-06-28 17:30 +0200
  RE: [PATCH v2 00/52] irqchip: KVM: Add support for GICv4 "Shanker Donthineni" <shankerd@codeaurora.org> - 2017-07-01 17:00 +0200

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