From: Megha Dey <megha.dey@intel.com>
To: tglx@linutronix.de
Cc: alex.williamson@redhat.com, kevin.tian@intel.com,
tony.luck@intel.com, dave.jiang@intel.com, ashok.raj@intel.com,
kvm@vger.kernel.org, ravi.v.shankar@intel.com, maz@kernel.org,
x86@kernel.org, linux-kernel@vger.kernel.org,
iommu@lists.linux-foundation.org, jgg@mellanox.com,
megha.dey@intel.com, linux-pci@vger.kernel.org,
bhelgaas@google.com, dan.j.williams@intel.com, dwmw@amazon.co.uk
Subject: [Patch V2 09/13] iommu/vt-d: Add DEV-MSI support
Date: Fri, 26 Feb 2021 12:11:13 -0800 [thread overview]
Message-ID: <1614370277-23235-10-git-send-email-megha.dey@intel.com> (raw)
In-Reply-To: <1614370277-23235-1-git-send-email-megha.dey@intel.com>
Add required support in the interrupt remapping driver for devices
which generate dev-msi interrupts and use the intel remapping
domain as the parent domain. Set the source-id of all dev-msi
interrupt requests to the parent PCI device associated with it.
Reviewed-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Megha Dey <megha.dey@intel.com>
---
drivers/iommu/intel/irq_remapping.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/iommu/intel/irq_remapping.c b/drivers/iommu/intel/irq_remapping.c
index 611ef52..2a55e54 100644
--- a/drivers/iommu/intel/irq_remapping.c
+++ b/drivers/iommu/intel/irq_remapping.c
@@ -1282,6 +1282,9 @@ static void intel_irq_remapping_prepare_irte(struct intel_ir_data *data,
case X86_IRQ_ALLOC_TYPE_PCI_MSIX:
set_msi_sid(irte, msi_desc_to_pci_dev(info->desc));
break;
+ case X86_IRQ_ALLOC_TYPE_DEV_MSI:
+ set_msi_sid(irte, to_pci_dev(info->desc->dev->parent));
+ break;
default:
BUG_ON(1);
break;
@@ -1325,7 +1328,8 @@ static int intel_irq_remapping_alloc(struct irq_domain *domain,
if (!info || !iommu)
return -EINVAL;
if (nr_irqs > 1 && info->type != X86_IRQ_ALLOC_TYPE_PCI_MSI &&
- info->type != X86_IRQ_ALLOC_TYPE_PCI_MSIX)
+ info->type != X86_IRQ_ALLOC_TYPE_PCI_MSIX &&
+ info->type != X86_IRQ_ALLOC_TYPE_DEV_MSI)
return -EINVAL;
/*
--
2.7.4
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next prev parent reply other threads:[~2021-02-26 20:11 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-26 20:11 [Patch V2 00/13] Introduce dev-msi and interrupt message store Megha Dey
2021-02-26 20:11 ` [Patch V2 01/13] x86/irq: Add DEV_MSI allocation type Megha Dey
2021-02-26 20:11 ` [Patch V2 02/13] x86/msi: Rename and rework pci_msi_prepare() to cover non-PCI MSI Megha Dey
2021-02-26 20:11 ` [Patch V2 03/13] platform-msi: Provide default irq_chip:: Ack Megha Dey
2021-02-26 20:11 ` [Patch V2 04/13] genirq/proc: Take buslock on affinity write Megha Dey
2021-02-26 20:11 ` [Patch V2 05/13] genirq/msi: Provide and use msi_domain_set_default_info_flags() Megha Dey
2021-02-26 20:11 ` [Patch V2 06/13] platform-msi: Add device MSI infrastructure Megha Dey
2021-02-26 20:11 ` [Patch V2 07/13] irqdomain/msi: Provide msi_alloc/free_store() callbacks Megha Dey
2021-03-25 17:08 ` Marc Zyngier
2021-03-25 18:44 ` Thomas Gleixner
2021-03-26 10:14 ` Marc Zyngier
2021-02-26 20:11 ` [Patch V2 08/13] genirq: Set auxiliary data for an interrupt Megha Dey
2021-03-25 17:23 ` Marc Zyngier
2021-03-25 18:59 ` Thomas Gleixner
2021-03-26 10:32 ` Marc Zyngier
2021-03-26 15:09 ` Thomas Gleixner
2021-02-26 20:11 ` Megha Dey [this message]
2021-02-26 20:11 ` [Patch V2 10/13] iommu: Add capability IOMMU_CAP_VIOMMU_HINT Megha Dey
2021-02-26 20:11 ` [Patch V2 11/13] platform-msi: Add platform check for subdevice irq domain Megha Dey
2021-02-26 20:11 ` [Patch V2 12/13] irqchip: Add IMS (Interrupt Message Store) driver Megha Dey
2021-03-25 17:43 ` Marc Zyngier
2021-03-25 19:07 ` Thomas Gleixner
2021-03-26 1:03 ` Dey, Megha
2021-02-26 20:11 ` [Patch V2 13/13] genirq/msi: Provide helpers to return Linux IRQ/dev_msi hw IRQ number Megha Dey
2021-03-25 17:53 ` Marc Zyngier
2021-03-26 1:02 ` Dey, Megha
2021-03-26 12:58 ` Marc Zyngier
2021-03-30 1:57 ` Dey, Megha
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