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From: "Andrei Cherechesu (OSS)" To: xen-devel@lists.xenproject.org Cc: Bertrand.Marquis@arm.com, sstabellini@kernel.org, julien@xen.org, Volodymyr_Babchuk@epam.com, rahul.singh@arm.com, Andrei Cherechesu , Bertrand Marquis Subject: [PATCH v2 1/2] arch/arm: irq: Add platform_get_irq_byname() implementation Date: Thu, 9 Mar 2023 18:19:32 +0200 Message-Id: <20230309161933.1336367-2-andrei.cherechesu@oss.nxp.com> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20230309161933.1336367-1-andrei.cherechesu@oss.nxp.com> References: <20230309161933.1336367-1-andrei.cherechesu@oss.nxp.com> Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: AM0PR02CA0138.eurprd02.prod.outlook.com (2603:10a6:20b:28c::35) To VI1PR04MB5056.eurprd04.prod.outlook.com (2603:10a6:803:5a::13) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: VI1PR04MB5056:EE_|AM9PR04MB7667:EE_ X-MS-Office365-Filtering-Correlation-Id: 369c9141-dcdd-447f-8e32-08db20ba2239 X-MS-Exchange-SharedMailbox-RoutingAgent-Processed: True X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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charset="utf-8" From: Andrei Cherechesu Moved implementation for the function which parses the IRQs of a DT node by the "interrupt-names" property from the SMMU-v3 driver to the IRQ core code and made it non-static to be used as helper. Also changed it to receive a "struct dt_device_node*" as parameter, like its counterpart, platform_get_irq(). Updated its usage inside the SMMU-v3 driver accordingly. Signed-off-by: Andrei Cherechesu Reviewed-by: Bertrand Marquis --- xen/arch/arm/include/asm/irq.h | 2 ++ xen/arch/arm/irq.c | 14 +++++++++++ xen/drivers/passthrough/arm/smmu-v3.c | 35 +++++---------------------- 3 files changed, 22 insertions(+), 29 deletions(-) diff --git a/xen/arch/arm/include/asm/irq.h b/xen/arch/arm/include/asm/irq.h index 245f49dcba..af94f41994 100644 --- a/xen/arch/arm/include/asm/irq.h +++ b/xen/arch/arm/include/asm/irq.h @@ -89,6 +89,8 @@ int irq_set_type(unsigned int irq, unsigned int type); =20 int platform_get_irq(const struct dt_device_node *device, int index); =20 +int platform_get_irq_byname(struct dt_device_node *np, const char *name); + void irq_set_affinity(struct irq_desc *desc, const cpumask_t *cpu_mask); =20 /* diff --git a/xen/arch/arm/irq.c b/xen/arch/arm/irq.c index 79718f68e7..ded495792b 100644 --- a/xen/arch/arm/irq.c +++ b/xen/arch/arm/irq.c @@ -718,6 +718,20 @@ int platform_get_irq(const struct dt_device_node *devi= ce, int index) return irq; } =20 +int platform_get_irq_byname(struct dt_device_node *np, const char *name) +{ + int index; + + if ( unlikely(!name) ) + return -EINVAL; + + index =3D dt_property_match_string(np, "interrupt-names", name); + if ( index < 0 ) + return index; + + return platform_get_irq(np, index); +} + /* * Local variables: * mode: C diff --git a/xen/drivers/passthrough/arm/smmu-v3.c b/xen/drivers/passthroug= h/arm/smmu-v3.c index d58c5cd0bf..bfdb62b395 100644 --- a/xen/drivers/passthrough/arm/smmu-v3.c +++ b/xen/drivers/passthrough/arm/smmu-v3.c @@ -200,30 +200,6 @@ static inline void dev_iommu_priv_set(struct device *d= ev, void *priv) fwspec->iommu_priv =3D priv; } =20 -static int platform_get_irq_byname_optional(struct device *dev, - const char *name) -{ - int index, ret; - struct dt_device_node *np =3D dev_to_dt(dev); - - if (unlikely(!name)) - return -EINVAL; - - index =3D dt_property_match_string(np, "interrupt-names", name); - if (index < 0) { - dev_info(dev, "IRQ %s not found\n", name); - return index; - } - - ret =3D platform_get_irq(np, index); - if (ret < 0) { - dev_err(dev, "failed to get irq index %d\n", index); - return -ENODEV; - } - - return ret; -} - /* Start of Linux SMMUv3 code */ static bool disable_bypass =3D 1; =20 @@ -2434,6 +2410,7 @@ static int arm_smmu_device_probe(struct platform_devi= ce *pdev) int irq, ret; paddr_t ioaddr, iosize; struct arm_smmu_device *smmu; + struct dt_device_node *np =3D dev_to_dt(pdev); =20 smmu =3D xzalloc(struct arm_smmu_device); if (!smmu) @@ -2451,7 +2428,7 @@ static int arm_smmu_device_probe(struct platform_devi= ce *pdev) } =20 /* Base address */ - ret =3D dt_device_get_address(dev_to_dt(pdev), 0, &ioaddr, &iosize); + ret =3D dt_device_get_address(np, 0, &ioaddr, &iosize); if (ret) goto out_free_smmu; =20 @@ -2484,19 +2461,19 @@ static int arm_smmu_device_probe(struct platform_de= vice *pdev) =20 /* Interrupt lines */ =20 - irq =3D platform_get_irq_byname_optional(pdev, "combined"); + irq =3D platform_get_irq_byname(np, "combined"); if (irq > 0) smmu->combined_irq =3D irq; else { - irq =3D platform_get_irq_byname_optional(pdev, "eventq"); + irq =3D platform_get_irq_byname(np, "eventq"); if (irq > 0) smmu->evtq.q.irq =3D irq; =20 - irq =3D platform_get_irq_byname_optional(pdev, "priq"); + irq =3D platform_get_irq_byname(np, "priq"); if (irq > 0) smmu->priq.q.irq =3D irq; =20 - irq =3D platform_get_irq_byname_optional(pdev, "gerror"); + irq =3D platform_get_irq_byname(np, "gerror"); if (irq > 0) smmu->gerr_irq =3D irq; } --=20 2.35.1