All of lore.kernel.org
 help / color / mirror / Atom feed
From: Eric Auger <eric.auger@linaro.org>
To: eric.auger@st.com, eric.auger@linaro.org,
	alex.williamson@redhat.com, will.deacon@arm.com, joro@8bytes.org,
	tglx@linutronix.de, jason@lakedaemon.net, marc.zyngier@arm.com,
	christoffer.dall@linaro.org,
	linux-arm-kernel@lists.infradead.org,
	kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org
Cc: suravee.suthikulpanit@amd.com, patches@linaro.org,
	linux-kernel@vger.kernel.org, Manish.Jaggi@caviumnetworks.com,
	Bharat.Bhushan@freescale.com, pranav.sawargaonkar@gmail.com,
	p.fedin@samsung.com, iommu@lists.linux-foundation.org,
	sherry.hurwitz@amd.com, brijesh.singh@amd.com, leo.duran@amd.com,
	Thomas.Lendacky@amd.com
Subject: [RFC v2 11/15] msi: Add a new MSI_FLAG_IRQ_REMAPPING flag
Date: Thu, 11 Feb 2016 14:34:18 +0000	[thread overview]
Message-ID: <1455201262-5259-12-git-send-email-eric.auger@linaro.org> (raw)
In-Reply-To: <1455201262-5259-1-git-send-email-eric.auger@linaro.org>

Let's introduce a new msi_domain_info flag value, MSI_FLAG_IRQ_REMAPPING
meant to tell the domain supports IRQ REMAPPING, also known as Interrupt
Translation Service. On Intel HW this capability is abstracted on IOMMU
side while on ARM it is abstracted on MSI controller side.

GICv3 ITS HW is the first HW advertising that feature.

Signed-off-by: Eric Auger <eric.auger@linaro.org>
---
 drivers/irqchip/irq-gic-v3-its.c | 1 +
 include/linux/msi.h              | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c
index 3447549..a5e0d8b 100644
--- a/drivers/irqchip/irq-gic-v3-its.c
+++ b/drivers/irqchip/irq-gic-v3-its.c
@@ -1544,6 +1544,7 @@ static int its_probe(struct device_node *node, struct irq_domain *parent)
 		inner_domain->parent = parent;
 		inner_domain->bus_token = DOMAIN_BUS_NEXUS;
 		info->ops = &its_msi_domain_ops;
+		info->flags |= MSI_FLAG_IRQ_REMAPPING;
 		info->data = its;
 		inner_domain->host_data = info;
 	}
diff --git a/include/linux/msi.h b/include/linux/msi.h
index a2a0068..03eda72 100644
--- a/include/linux/msi.h
+++ b/include/linux/msi.h
@@ -261,6 +261,8 @@ enum {
 	MSI_FLAG_MULTI_PCI_MSI		= (1 << 3),
 	/* Support PCI MSIX interrupts */
 	MSI_FLAG_PCI_MSIX		= (1 << 4),
+	/* Support MSI IRQ remapping service */
+	MSI_FLAG_IRQ_REMAPPING		= (1 << 5),
 };
 
 int msi_domain_set_affinity(struct irq_data *data, const struct cpumask *mask,
-- 
1.9.1

WARNING: multiple messages have this Message-ID (diff)
From: Eric Auger <eric.auger@linaro.org>
To: eric.auger@st.com, eric.auger@linaro.org,
	alex.williamson@redhat.com, will.deacon@arm.com, joro@8bytes.org,
	tglx@linutronix.de, jason@lakedaemon.net, marc.zyngier@arm.com,
	christoffer.dall@linaro.org,
	linux-arm-kernel@lists.infradead.org,
	kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org
Cc: Thomas.Lendacky@amd.com, brijesh.singh@amd.com,
	patches@linaro.org, Manish.Jaggi@caviumnetworks.com,
	linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org,
	leo.duran@amd.com, sherry.hurwitz@amd.com
Subject: [RFC v2 11/15] msi: Add a new MSI_FLAG_IRQ_REMAPPING flag
Date: Thu, 11 Feb 2016 14:34:18 +0000	[thread overview]
Message-ID: <1455201262-5259-12-git-send-email-eric.auger@linaro.org> (raw)
In-Reply-To: <1455201262-5259-1-git-send-email-eric.auger@linaro.org>

Let's introduce a new msi_domain_info flag value, MSI_FLAG_IRQ_REMAPPING
meant to tell the domain supports IRQ REMAPPING, also known as Interrupt
Translation Service. On Intel HW this capability is abstracted on IOMMU
side while on ARM it is abstracted on MSI controller side.

GICv3 ITS HW is the first HW advertising that feature.

Signed-off-by: Eric Auger <eric.auger@linaro.org>
---
 drivers/irqchip/irq-gic-v3-its.c | 1 +
 include/linux/msi.h              | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c
index 3447549..a5e0d8b 100644
--- a/drivers/irqchip/irq-gic-v3-its.c
+++ b/drivers/irqchip/irq-gic-v3-its.c
@@ -1544,6 +1544,7 @@ static int its_probe(struct device_node *node, struct irq_domain *parent)
 		inner_domain->parent = parent;
 		inner_domain->bus_token = DOMAIN_BUS_NEXUS;
 		info->ops = &its_msi_domain_ops;
+		info->flags |= MSI_FLAG_IRQ_REMAPPING;
 		info->data = its;
 		inner_domain->host_data = info;
 	}
diff --git a/include/linux/msi.h b/include/linux/msi.h
index a2a0068..03eda72 100644
--- a/include/linux/msi.h
+++ b/include/linux/msi.h
@@ -261,6 +261,8 @@ enum {
 	MSI_FLAG_MULTI_PCI_MSI		= (1 << 3),
 	/* Support PCI MSIX interrupts */
 	MSI_FLAG_PCI_MSIX		= (1 << 4),
+	/* Support MSI IRQ remapping service */
+	MSI_FLAG_IRQ_REMAPPING		= (1 << 5),
 };
 
 int msi_domain_set_affinity(struct irq_data *data, const struct cpumask *mask,
-- 
1.9.1

WARNING: multiple messages have this Message-ID (diff)
From: eric.auger@linaro.org (Eric Auger)
To: linux-arm-kernel@lists.infradead.org
Subject: [RFC v2 11/15] msi: Add a new MSI_FLAG_IRQ_REMAPPING flag
Date: Thu, 11 Feb 2016 14:34:18 +0000	[thread overview]
Message-ID: <1455201262-5259-12-git-send-email-eric.auger@linaro.org> (raw)
In-Reply-To: <1455201262-5259-1-git-send-email-eric.auger@linaro.org>

Let's introduce a new msi_domain_info flag value, MSI_FLAG_IRQ_REMAPPING
meant to tell the domain supports IRQ REMAPPING, also known as Interrupt
Translation Service. On Intel HW this capability is abstracted on IOMMU
side while on ARM it is abstracted on MSI controller side.

GICv3 ITS HW is the first HW advertising that feature.

Signed-off-by: Eric Auger <eric.auger@linaro.org>
---
 drivers/irqchip/irq-gic-v3-its.c | 1 +
 include/linux/msi.h              | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c
index 3447549..a5e0d8b 100644
--- a/drivers/irqchip/irq-gic-v3-its.c
+++ b/drivers/irqchip/irq-gic-v3-its.c
@@ -1544,6 +1544,7 @@ static int its_probe(struct device_node *node, struct irq_domain *parent)
 		inner_domain->parent = parent;
 		inner_domain->bus_token = DOMAIN_BUS_NEXUS;
 		info->ops = &its_msi_domain_ops;
+		info->flags |= MSI_FLAG_IRQ_REMAPPING;
 		info->data = its;
 		inner_domain->host_data = info;
 	}
diff --git a/include/linux/msi.h b/include/linux/msi.h
index a2a0068..03eda72 100644
--- a/include/linux/msi.h
+++ b/include/linux/msi.h
@@ -261,6 +261,8 @@ enum {
 	MSI_FLAG_MULTI_PCI_MSI		= (1 << 3),
 	/* Support PCI MSIX interrupts */
 	MSI_FLAG_PCI_MSIX		= (1 << 4),
+	/* Support MSI IRQ remapping service */
+	MSI_FLAG_IRQ_REMAPPING		= (1 << 5),
 };
 
 int msi_domain_set_affinity(struct irq_data *data, const struct cpumask *mask,
-- 
1.9.1

  parent reply	other threads:[~2016-02-11 14:37 UTC|newest]

Thread overview: 48+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-02-11 14:34 [RFC v2 00/15] KVM PCIe/MSI passthrough on ARM/ARM64 Eric Auger
2016-02-11 14:34 ` Eric Auger
2016-02-11 14:34 ` Eric Auger
2016-02-11 14:34 ` [RFC v2 01/15] iommu: Add DOMAIN_ATTR_MSI_MAPPING attribute Eric Auger
2016-02-11 14:34   ` Eric Auger
2016-02-11 14:34   ` Eric Auger
2016-02-11 14:34 ` [RFC v2 02/15] vfio: expose MSI mapping requirement through VFIO_IOMMU_GET_INFO Eric Auger
2016-02-11 14:34   ` Eric Auger
2016-02-11 14:34   ` Eric Auger
2016-02-11 14:34 ` [RFC v2 03/15] vfio: introduce VFIO_IOVA_RESERVED vfio_dma type Eric Auger
2016-02-11 14:34   ` Eric Auger
2016-02-11 14:34   ` Eric Auger
2016-02-11 14:34 ` [RFC v2 04/15] iommu: add alloc/free_reserved_iova_domain Eric Auger
2016-02-11 14:34   ` Eric Auger
2016-02-11 14:34   ` Eric Auger
2016-02-11 14:34 ` [RFC v2 05/15] iommu/arm-smmu: implement alloc/free_reserved_iova_domain Eric Auger
2016-02-11 14:34   ` Eric Auger
2016-02-11 14:34   ` Eric Auger
2016-02-11 14:34 ` [RFC v2 06/15] iommu/arm-smmu: add a reserved binding RB tree Eric Auger
2016-02-11 14:34   ` Eric Auger
2016-02-11 14:34   ` Eric Auger
2016-02-11 14:34 ` [RFC v2 07/15] iommu: iommu_get/put_single_reserved Eric Auger
2016-02-11 14:34   ` Eric Auger
2016-02-11 14:34   ` Eric Auger
2016-02-11 14:34 ` [RFC v2 08/15] iommu/arm-smmu: implement iommu_get/put_single_reserved Eric Auger
2016-02-11 14:34   ` Eric Auger
2016-02-11 14:34   ` Eric Auger
2016-02-11 14:34 ` [RFC v2 09/15] iommu/arm-smmu: relinquish reserved resources on domain deletion Eric Auger
2016-02-11 14:34   ` Eric Auger
2016-02-11 14:34   ` Eric Auger
2016-02-11 14:34 ` [RFC v2 10/15] vfio: allow the user to register reserved iova range for MSI mapping Eric Auger
2016-02-11 14:34   ` Eric Auger
2016-02-11 14:34   ` Eric Auger
2016-02-11 14:34 ` Eric Auger [this message]
2016-02-11 14:34   ` [RFC v2 11/15] msi: Add a new MSI_FLAG_IRQ_REMAPPING flag Eric Auger
2016-02-11 14:34   ` Eric Auger
2016-02-11 14:34 ` [RFC v2 12/15] msi: export msi_get_domain_info Eric Auger
2016-02-11 14:34   ` Eric Auger
2016-02-11 14:34   ` Eric Auger
2016-02-11 14:34 ` [RFC v2 13/15] vfio/type1: also check IRQ remapping capability at msi domain Eric Auger
2016-02-11 14:34   ` Eric Auger
2016-02-11 14:34   ` Eric Auger
2016-02-11 14:34 ` [RFC v2 14/15] iommu/arm-smmu: do not advertise IOMMU_CAP_INTR_REMAP Eric Auger
2016-02-11 14:34   ` Eric Auger
2016-02-11 14:34   ` Eric Auger
2016-02-11 14:34 ` [RFC v2 15/15] irqchip/gicv2m/v3-its-pci-msi: IOMMU map the MSI frame when needed Eric Auger
2016-02-11 14:34   ` Eric Auger
2016-02-11 14:34   ` Eric Auger

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1455201262-5259-12-git-send-email-eric.auger@linaro.org \
    --to=eric.auger@linaro.org \
    --cc=Bharat.Bhushan@freescale.com \
    --cc=Manish.Jaggi@caviumnetworks.com \
    --cc=Thomas.Lendacky@amd.com \
    --cc=alex.williamson@redhat.com \
    --cc=brijesh.singh@amd.com \
    --cc=christoffer.dall@linaro.org \
    --cc=eric.auger@st.com \
    --cc=iommu@lists.linux-foundation.org \
    --cc=jason@lakedaemon.net \
    --cc=joro@8bytes.org \
    --cc=kvm@vger.kernel.org \
    --cc=kvmarm@lists.cs.columbia.edu \
    --cc=leo.duran@amd.com \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=marc.zyngier@arm.com \
    --cc=p.fedin@samsung.com \
    --cc=patches@linaro.org \
    --cc=pranav.sawargaonkar@gmail.com \
    --cc=sherry.hurwitz@amd.com \
    --cc=suravee.suthikulpanit@amd.com \
    --cc=tglx@linutronix.de \
    --cc=will.deacon@arm.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.