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From: David Woodhouse <dwmw2@infradead.org>
To: x86@kernel.org
Cc: kvm <kvm@vger.kernel.org>,
	iommu@lists.linux-foundation.org, joro@8bytes.org,
	Thomas Gleixner <tglx@linutronix.de>,
	Paolo Bonzini <pbonzini@redhat.com>,
	linux-kernel <linux-kernel@vger.kernel.org>,
	linux-hyperv@vger.kernel.org, maz@misterjones.org
Subject: [PATCH 3/9] iommu/amd: Implement select() method on remapping irqdomain
Date: Tue, 13 Oct 2020 09:11:33 +0100	[thread overview]
Message-ID: <20201013081139.1558200-4-dwmw2@infradead.org> (raw)
In-Reply-To: <20201013081139.1558200-1-dwmw2@infradead.org>

From: David Woodhouse <dwmw@amazon.co.uk>

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
---
 drivers/iommu/amd/iommu.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/drivers/iommu/amd/iommu.c b/drivers/iommu/amd/iommu.c
index 13d0a8f42d56..7ecebc5d255f 100644
--- a/drivers/iommu/amd/iommu.c
+++ b/drivers/iommu/amd/iommu.c
@@ -3590,6 +3590,24 @@ struct irq_remap_ops amd_iommu_irq_ops = {
 	.get_irq_domain		= get_irq_domain,
 };
 
+static int irq_remapping_select(struct irq_domain *d, struct irq_fwspec *fwspec,
+				enum irq_domain_bus_token bus_token)
+{
+	struct amd_iommu *iommu;
+	int devid = -1;
+
+	if (x86_fwspec_is_ioapic(fwspec))
+		devid = get_ioapic_devid(fwspec->param[0]);
+	else if (x86_fwspec_is_ioapic(fwspec))
+		devid = get_hpet_devid(fwspec->param[0]);
+
+	if (devid < 0)
+		return 0;
+
+	iommu = amd_iommu_rlookup_table[devid];
+	return iommu && iommu->ir_domain == d;
+}
+
 static void irq_remapping_prepare_irte(struct amd_ir_data *data,
 				       struct irq_cfg *irq_cfg,
 				       struct irq_alloc_info *info,
@@ -3813,6 +3831,7 @@ static void irq_remapping_deactivate(struct irq_domain *domain,
 }
 
 static const struct irq_domain_ops amd_ir_domain_ops = {
+	.select = irq_remapping_select,
 	.alloc = irq_remapping_alloc,
 	.free = irq_remapping_free,
 	.activate = irq_remapping_activate,
-- 
2.26.2


  parent reply	other threads:[~2020-10-13  8:11 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <0de733f6384874d68afba2606119d0d9b1e8b34e.camel@infradead.org>
2020-10-13  8:11 ` [PATCH 0/9] Remove irq_remapping_get_irq_domain() David Woodhouse
2020-10-13  8:11   ` [PATCH 1/9] genirq/irqdomain: Implement get_name() method on irqchip fwnodes David Woodhouse
2020-10-13  8:11   ` [PATCH 2/9] x86/apic: Add select() method on vector irqdomain David Woodhouse
2020-10-13  8:11   ` David Woodhouse [this message]
2020-10-13  8:11   ` [PATCH 4/9] iommu/vt-d: Implement select() method on remapping irqdomain David Woodhouse
2020-10-13  8:11   ` [PATCH 5/9] iommu/hyper-v: " David Woodhouse
2020-10-13  8:11   ` [PATCH 6/9] x86/hpet: Use irq_find_matching_fwspec() to find " David Woodhouse
2020-10-13  8:11   ` [PATCH 7/9] x86/ioapic: " David Woodhouse
2020-10-13  8:11   ` [PATCH 8/9] x86: Kill all traces of irq_remapping_get_irq_domain() David Woodhouse
2020-10-13  8:11   ` [PATCH 9/9] iommu/vt-d: Simplify intel_irq_remapping_select() David Woodhouse

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