From: Megha Dey <megha.dey@intel.com>
To: tglx@linutronix.de
Cc: linux-kernel@vger.kernel.org, dave.jiang@intel.com,
ashok.raj@intel.com, kevin.tian@intel.com, dwmw@amazon.co.uk,
x86@kernel.org, tony.luck@intel.com, dan.j.williams@intel.com,
megha.dey@intel.com, jgg@mellanox.com, kvm@vger.kernel.org,
iommu@lists.linux-foundation.org, alex.williamson@redhat.com,
bhelgaas@google.com, maz@kernel.org, linux-pci@vger.kernel.org,
baolu.lu@linux.intel.com, ravi.v.shankar@intel.com
Subject: [PATCH 09/12] iommu/vt-d: Add DEV-MSI support
Date: Wed, 3 Feb 2021 12:56:42 -0800 [thread overview]
Message-ID: <1612385805-3412-10-git-send-email-megha.dey@intel.com> (raw)
In-Reply-To: <1612385805-3412-1-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 685200a..18f1b53 100644
--- a/drivers/iommu/intel/irq_remapping.c
+++ b/drivers/iommu/intel/irq_remapping.c
@@ -1278,6 +1278,9 @@ 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;
@@ -1321,7 +1324,8 @@ 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
WARNING: multiple messages have this Message-ID (diff)
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 09/12] iommu/vt-d: Add DEV-MSI support
Date: Wed, 3 Feb 2021 12:56:42 -0800 [thread overview]
Message-ID: <1612385805-3412-10-git-send-email-megha.dey@intel.com> (raw)
In-Reply-To: <1612385805-3412-1-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 685200a..18f1b53 100644
--- a/drivers/iommu/intel/irq_remapping.c
+++ b/drivers/iommu/intel/irq_remapping.c
@@ -1278,6 +1278,9 @@ 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;
@@ -1321,7 +1324,8 @@ 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
_______________________________________________
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu
next prev parent reply other threads:[~2021-02-03 20:59 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-03 20:56 [PATCH 00/12] Introduce dev-msi and interrupt message store Megha Dey
2021-02-03 20:56 ` Megha Dey
2021-02-03 20:56 ` [PATCH 01/12] x86/irq: Add DEV_MSI allocation type Megha Dey
2021-02-03 20:56 ` Megha Dey
2021-02-03 20:56 ` [PATCH 02/12] x86/msi: Rename and rework pci_msi_prepare() to cover non-PCI MSI Megha Dey
2021-02-03 20:56 ` Megha Dey
2021-02-03 20:56 ` [PATCH 03/12] platform-msi: Provide default irq_chip:: Ack Megha Dey
2021-02-03 20:56 ` Megha Dey
2021-02-03 20:56 ` [PATCH 04/12] genirq/proc: Take buslock on affinity write Megha Dey
2021-02-03 20:56 ` Megha Dey
2021-02-03 20:56 ` [PATCH 05/12] genirq/msi: Provide and use msi_domain_set_default_info_flags() Megha Dey
2021-02-03 20:56 ` Megha Dey
2021-02-03 20:56 ` [PATCH 06/12] platform-msi: Add device MSI infrastructure Megha Dey
2021-02-03 20:56 ` Megha Dey
2021-02-03 20:56 ` [PATCH 07/12] irqdomain/msi: Provide msi_alloc/free_store() callbacks Megha Dey
2021-02-03 20:56 ` Megha Dey
2021-02-03 20:56 ` [PATCH 08/12] genirq: Set auxiliary data for an interrupt Megha Dey
2021-02-03 20:56 ` Megha Dey
2021-02-03 20:56 ` Megha Dey [this message]
2021-02-03 20:56 ` [PATCH 09/12] iommu/vt-d: Add DEV-MSI support Megha Dey
2021-02-03 20:56 ` [PATCH 10/12] iommu: Add capability IOMMU_CAP_VIOMMU_HINT Megha Dey
2021-02-03 20:56 ` Megha Dey
2021-02-03 20:56 ` [PATCH 11/12] platform-msi: Add platform check for subdevice irq domain Megha Dey
2021-02-03 20:56 ` Megha Dey
2021-02-04 12:14 ` Jason Gunthorpe
2021-02-04 12:14 ` Jason Gunthorpe
2021-02-04 13:22 ` Lu Baolu
2021-02-04 13:22 ` Lu Baolu
2021-02-08 8:21 ` Leon Romanovsky
2021-02-08 8:21 ` Leon Romanovsky
2021-02-09 0:36 ` Lu Baolu
2021-02-03 20:56 ` [PATCH 12/12] irqchip: Add IMS (Interrupt Message Store) driver Megha Dey
2021-02-03 20:56 ` Megha Dey
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