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From: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
To: linux-arm-kernel@lists.infradead.org
Cc: devicetree@vger.kernel.org,
	Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will@kernel.org>,
	linux-pci@vger.kernel.org, Joerg Roedel <joro@8bytes.org>,
	Sudeep Holla <sudeep.holla@arm.com>,
	"Rafael J. Wysocki" <rjw@rjwysocki.net>,
	Makarand Pawagi <makarand.pawagi@nxp.com>,
	linux-acpi@vger.kernel.org, iommu@lists.linux-foundation.org,
	Rob Herring <robh+dt@kernel.org>, Marc Zyngier <maz@kernel.org>,
	Hanjun Guo <guohanjun@huawei.com>,
	Bjorn Helgaas <bhelgaas@google.com>,
	Robin Murphy <robin.murphy@arm.com>,
	Diana Craciun <diana.craciun@oss.nxp.com>,
	Laurentiu Tudor <laurentiu.tudor@nxp.com>
Subject: [PATCH 09/12] dt-bindings: arm: fsl: Add msi-map device-tree binding for fsl-mc bus
Date: Thu, 21 May 2020 14:00:05 +0100
Message-ID: <20200521130008.8266-10-lorenzo.pieralisi@arm.com> (raw)
In-Reply-To: <20200521130008.8266-1-lorenzo.pieralisi@arm.com>

From: Laurentiu Tudor <laurentiu.tudor@nxp.com>

The existing bindings cannot be used to specify the relationship
between fsl-mc devices and GIC ITSes.

Add a generic binding for mapping fsl-mc devices to GIC ITSes, using
msi-map property.

Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Cc: Rob Herring <robh+dt@kernel.org>
---
 .../devicetree/bindings/misc/fsl,qoriq-mc.txt | 30 +++++++++++++++++--
 1 file changed, 27 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/misc/fsl,qoriq-mc.txt b/Documentation/devicetree/bindings/misc/fsl,qoriq-mc.txt
index 9134e9bcca56..b0813b2d0493 100644
--- a/Documentation/devicetree/bindings/misc/fsl,qoriq-mc.txt
+++ b/Documentation/devicetree/bindings/misc/fsl,qoriq-mc.txt
@@ -18,9 +18,9 @@ same hardware "isolation context" and a 10-bit value called an ICID
 the requester.
 
 The generic 'iommus' property is insufficient to describe the relationship
-between ICIDs and IOMMUs, so an iommu-map property is used to define
-the set of possible ICIDs under a root DPRC and how they map to
-an IOMMU.
+between ICIDs and IOMMUs, so the iommu-map and msi-map properties are used
+to define the set of possible ICIDs under a root DPRC and how they map to
+an IOMMU and a GIC ITS respectively.
 
 For generic IOMMU bindings, see
 Documentation/devicetree/bindings/iommu/iommu.txt.
@@ -28,6 +28,9 @@ Documentation/devicetree/bindings/iommu/iommu.txt.
 For arm-smmu binding, see:
 Documentation/devicetree/bindings/iommu/arm,smmu.yaml.
 
+For GICv3 and GIC ITS bindings, see:
+Documentation/devicetree/bindings/interrupt-controller/arm,gic-v3.yaml.
+
 Required properties:
 
     - compatible
@@ -119,6 +122,15 @@ Optional properties:
   associated with the listed IOMMU, with the iommu-specifier
   (i - icid-base + iommu-base).
 
+- msi-map: Maps an ICID to a GIC ITS and associated iommu-specifier
+  data.
+
+  The property is an arbitrary number of tuples of
+  (icid-base,iommu,iommu-base,length).
+
+  Any ICID in the interval [icid-base, icid-base + length) is
+  associated with the listed GIC ITS, with the iommu-specifier
+  (i - icid-base + iommu-base).
 Example:
 
         smmu: iommu@5000000 {
@@ -128,6 +140,16 @@ Example:
                ...
         };
 
+	gic: interrupt-controller@6000000 {
+		compatible = "arm,gic-v3";
+		...
+		its: gic-its@6020000 {
+			compatible = "arm,gic-v3-its";
+			msi-controller;
+			...
+		};
+	};
+
         fsl_mc: fsl-mc@80c000000 {
                 compatible = "fsl,qoriq-mc";
                 reg = <0x00000008 0x0c000000 0 0x40>,    /* MC portal base */
@@ -135,6 +157,8 @@ Example:
                 msi-parent = <&its>;
                 /* define map for ICIDs 23-64 */
                 iommu-map = <23 &smmu 23 41>;
+                /* define msi map for ICIDs 23-64 */
+                msi-map = <23 &its 23 41>;
                 #address-cells = <3>;
                 #size-cells = <1>;
 
-- 
2.26.1


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  parent reply index

Thread overview: 80+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-21 12:59 [PATCH 00/12] ACPI/OF: Upgrade MSI/IOMMU ID mapping APIs Lorenzo Pieralisi
2020-05-21 12:59 ` [PATCH 01/12] ACPI/IORT: Make iort_match_node_callback walk the ACPI namespace for NC Lorenzo Pieralisi
2020-05-21 12:59 ` [PATCH 02/12] ACPI/IORT: Make iort_get_device_domain IRQ domain agnostic Lorenzo Pieralisi
2020-05-21 19:56   ` Bjorn Helgaas
2020-05-21 12:59 ` [PATCH 03/12] ACPI/IORT: Make iort_msi_map_rid() PCI agnostic Lorenzo Pieralisi
2020-05-21 13:00 ` [PATCH 04/12] ACPI/IORT: Remove useless PCI bus walk Lorenzo Pieralisi
2020-05-21 13:00 ` [PATCH 05/12] ACPI/IORT: Add an input ID to acpi_dma_configure() Lorenzo Pieralisi
2020-05-21 13:00 ` [PATCH 06/12] of/iommu: Make of_map_rid() PCI agnostic Lorenzo Pieralisi
2020-05-21 22:47   ` Rob Herring
2020-06-04 14:27     ` Lorenzo Pieralisi
2020-05-21 13:00 ` [PATCH 07/12] of/device: Add input id to of_dma_configure() Lorenzo Pieralisi
2020-05-21 23:02   ` Rob Herring
2020-06-04 14:49     ` Lorenzo Pieralisi
2020-05-21 13:00 ` [PATCH 08/12] of/irq: make of_msi_map_get_device_domain() bus agnostic Lorenzo Pieralisi
2020-05-21 19:57   ` Bjorn Helgaas
2020-05-21 13:00 ` Lorenzo Pieralisi [this message]
2020-05-21 23:10   ` [PATCH 09/12] dt-bindings: arm: fsl: Add msi-map device-tree binding for fsl-mc bus Rob Herring
2020-05-22  9:42     ` Robin Murphy
2020-05-22  9:57       ` Diana Craciun OSS
2020-05-22 14:08         ` Rob Herring
2020-05-22 14:34           ` Robin Murphy
2020-05-22 14:02       ` Rob Herring
2020-05-22 15:38         ` Laurentiu Tudor
2020-05-21 13:00 ` [PATCH 10/12] of/irq: Make of_msi_map_rid() PCI bus agnostic Lorenzo Pieralisi
2020-05-21 23:17   ` Rob Herring
2020-06-04 15:08     ` Lorenzo Pieralisi
2020-05-21 13:00 ` [PATCH 11/12] bus/fsl-mc: Refactor the MSI domain creation in the DPRC driver Lorenzo Pieralisi
2020-05-21 13:00 ` [PATCH 12/12] bus: fsl-mc: Add ACPI support for fsl-mc Lorenzo Pieralisi
2020-05-21 15:03   ` Laurentiu Tudor
2020-05-22  5:32     ` Makarand Pawagi
2020-05-22  9:53       ` Lorenzo Pieralisi
2020-06-19  8:20 ` [PATCH v2 00/12] ACPI/OF: Upgrade MSI/IOMMU ID mapping APIs Lorenzo Pieralisi
2020-06-19  8:20   ` [PATCH v2 01/12] ACPI/IORT: Make iort_match_node_callback walk the ACPI namespace for NC Lorenzo Pieralisi
2020-06-29  4:24     ` Hanjun Guo
2020-06-29  9:05       ` Lorenzo Pieralisi
2020-06-30  3:06         ` Hanjun Guo
2020-06-30 10:24           ` Lorenzo Pieralisi
2020-06-30 13:04             ` Hanjun Guo
2020-07-01 16:12               ` Robin Murphy
2020-07-02  8:22                 ` Hanjun Guo
2020-07-09  9:21                   ` Lorenzo Pieralisi
2020-07-09 12:48                     ` Hanjun Guo
2020-08-18  0:49                   ` Hanjun Guo
2020-06-19  8:20   ` [PATCH v2 02/12] ACPI/IORT: Make iort_get_device_domain IRQ domain agnostic Lorenzo Pieralisi
2020-06-19  8:20   ` [PATCH v2 03/12] ACPI/IORT: Make iort_msi_map_rid() PCI agnostic Lorenzo Pieralisi
2020-07-15  9:15     ` Lorenzo Pieralisi
2020-07-21 14:59     ` Bjorn Helgaas
2020-07-27  6:06       ` [EXT] " Makarand Pawagi
2020-06-19  8:20   ` [PATCH v2 04/12] ACPI/IORT: Remove useless PCI bus walk Lorenzo Pieralisi
2020-06-19  8:20   ` [PATCH v2 05/12] ACPI/IORT: Add an input ID to acpi_dma_configure() Lorenzo Pieralisi
2020-07-09  9:35     ` Lorenzo Pieralisi
2020-07-15  9:13       ` Lorenzo Pieralisi
2020-07-28 12:48         ` Lorenzo Pieralisi
2020-07-28 13:00           ` Rafael J. Wysocki
2020-06-19  8:20   ` [PATCH v2 06/12] of/iommu: Make of_map_rid() PCI agnostic Lorenzo Pieralisi
2020-07-13 23:57     ` Rob Herring
2020-06-19  8:20   ` [PATCH v2 07/12] of/device: Add input id to of_dma_configure() Lorenzo Pieralisi
2020-06-30 21:50     ` Rob Herring
2020-06-19  8:20   ` [PATCH v2 08/12] dt-bindings: arm: fsl: Add msi-map device-tree binding for fsl-mc bus Lorenzo Pieralisi
2020-06-30 21:55     ` Rob Herring
2020-06-19  8:20   ` [PATCH v2 09/12] of/irq: make of_msi_map_get_device_domain() bus agnostic Lorenzo Pieralisi
2020-06-30 21:50     ` Rob Herring
2020-06-19  8:20   ` [PATCH v2 10/12] of/irq: Make of_msi_map_rid() PCI " Lorenzo Pieralisi
2020-06-30 21:56     ` Rob Herring
2020-06-19  8:20   ` [PATCH v2 11/12] bus/fsl-mc: Refactor the MSI domain creation in the DPRC driver Lorenzo Pieralisi
2020-07-15 13:05     ` Marc Zyngier
2020-06-19  8:20   ` [PATCH v2 12/12] bus: fsl-mc: Add ACPI support for fsl-mc Lorenzo Pieralisi
2020-07-01 16:55     ` Laurentiu Tudor
2020-07-09  9:19       ` Lorenzo Pieralisi
2020-07-09  9:26         ` [EXT] " Makarand Pawagi
2020-07-09 10:14           ` Laurentiu Tudor
2020-07-09 10:37             ` Makarand Pawagi
2020-07-09 10:39               ` Laurentiu Tudor
2020-07-09 10:47               ` Diana Craciun OSS
2020-07-09 10:52                 ` Makarand Pawagi
2020-07-15 10:06                   ` Lorenzo Pieralisi
2020-07-16  3:23                     ` Makarand Pawagi
2020-07-16  7:57                       ` Marc Zyngier
2020-07-20 16:54   ` [PATCH v2 00/12] ACPI/OF: Upgrade MSI/IOMMU ID mapping APIs Lorenzo Pieralisi
2020-07-21  4:28     ` [EXT] " Makarand Pawagi

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