From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.3 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, UNWANTED_LANGUAGE_BODY,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E96FDC433F1 for ; Fri, 24 Jul 2020 14:19:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C830721883 for ; Fri, 24 Jul 2020 14:19:34 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com header.b="r4sdoTiq" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726782AbgGXOTe (ORCPT ); Fri, 24 Jul 2020 10:19:34 -0400 Received: from lelv0143.ext.ti.com ([198.47.23.248]:52910 "EHLO lelv0143.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726366AbgGXOTe (ORCPT ); Fri, 24 Jul 2020 10:19:34 -0400 Received: from fllv0035.itg.ti.com ([10.64.41.0]) by lelv0143.ext.ti.com (8.15.2/8.15.2) with ESMTP id 06OEJQrV085906; Fri, 24 Jul 2020 09:19:26 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1595600366; bh=tCRyqOS7QzOz+wBhm7jyYwDjGFUQdR0oZraTRLE9x2o=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=r4sdoTiq02C4QyjomVMczWN8yC9TgXU15Xzbt47dg5deIWaaj9Teazykk3KX18pNK 4tReGgHNwpBD5JhKYvRtp1wm/f3Aha6WIRwvy1izN5BIllsVfBREnkJy8NJlnRTYL9 nAmTsaSxryEY23hWlZA545rXVNhSpscNxCJA4WNE= Received: from DFLE112.ent.ti.com (dfle112.ent.ti.com [10.64.6.33]) by fllv0035.itg.ti.com (8.15.2/8.15.2) with ESMTP id 06OEJQ22005108; Fri, 24 Jul 2020 09:19:26 -0500 Received: from DFLE102.ent.ti.com (10.64.6.23) by DFLE112.ent.ti.com (10.64.6.33) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1979.3; Fri, 24 Jul 2020 09:19:26 -0500 Received: from fllv0040.itg.ti.com (10.64.41.20) by DFLE102.ent.ti.com (10.64.6.23) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1979.3 via Frontend Transport; Fri, 24 Jul 2020 09:19:26 -0500 Received: from lokesh-ssd.dhcp.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by fllv0040.itg.ti.com (8.15.2/8.15.2) with ESMTP id 06OEIiXx016316; Fri, 24 Jul 2020 09:19:22 -0500 From: Lokesh Vutla To: Marc Zyngier , Rob Herring CC: Thomas Gleixner , Nishanth Menon , Tero Kristo , Santosh Shilimkar , Linux ARM Mailing List , Sekhar Nori , Grygorii Strashko , Peter Ujfalusi , Device Tree Mailing List , Suman Anna , Lokesh Vutla Subject: [PATCH v3 9/9] irqchip/ti-sci-inta: Add support for INTA directly connecting to GIC Date: Fri, 24 Jul 2020 19:48:37 +0530 Message-ID: <20200724141837.4542-10-lokeshvutla@ti.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200724141837.4542-1-lokeshvutla@ti.com> References: <20200724141837.4542-1-lokeshvutla@ti.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Driver assumes that Interrupt parent to Interrupt Aggregator is always Interrupt router. This is not true always and GIC can be a parent to Interrupt Aggregator. Update the driver to detect the parent and request the parent irqs accordingly. Signed-off-by: Lokesh Vutla --- drivers/irqchip/irq-ti-sci-inta.c | 90 ++++++++++++++++++++++++++----- 1 file changed, 77 insertions(+), 13 deletions(-) diff --git a/drivers/irqchip/irq-ti-sci-inta.c b/drivers/irqchip/irq-ti-sci-inta.c index 7e3ebf6ed2cd..00c17ade118a 100644 --- a/drivers/irqchip/irq-ti-sci-inta.c +++ b/drivers/irqchip/irq-ti-sci-inta.c @@ -8,6 +8,7 @@ #include #include +#include #include #include #include @@ -128,6 +129,37 @@ static void ti_sci_inta_irq_handler(struct irq_desc *desc) chained_irq_exit(irq_desc_get_chip(desc), desc); } +/** + * ti_sci_inta_xlate_irq() - Translate hwirq to parent's hwirq. + * @inta: IRQ domain corresponding to Interrupt Aggregator + * @irq: Hardware irq corresponding to the above irq domain + * + * Return parent irq number if translation is available else -ENOENT. + */ +static int ti_sci_inta_xlate_irq(struct ti_sci_inta_irq_domain *inta, + u16 vint_id) +{ + struct device_node *np = dev_of_node(&inta->pdev->dev); + u32 base, parent_base, size; + const __be32 *range; + int len; + + range = of_get_property(np, "ti,interrupt-ranges", &len); + if (!range) + return vint_id; + + for (len /= sizeof(*range); len >= 3; len -= 3) { + base = be32_to_cpu(*range++); + parent_base = be32_to_cpu(*range++); + size = be32_to_cpu(*range++); + + if (base <= vint_id && vint_id < base + size) + return vint_id - base + parent_base; + } + + return -ENOENT; +} + /** * ti_sci_inta_alloc_parent_irq() - Allocate parent irq to Interrupt aggregator * @domain: IRQ domain corresponding to Interrupt Aggregator @@ -139,30 +171,55 @@ static struct ti_sci_inta_vint_desc *ti_sci_inta_alloc_parent_irq(struct irq_dom struct ti_sci_inta_irq_domain *inta = domain->host_data; struct ti_sci_inta_vint_desc *vint_desc; struct irq_fwspec parent_fwspec; + struct device_node *parent_node; unsigned int parent_virq; - u16 vint_id; + u16 vint_id, p_hwirq; + int ret; vint_id = ti_sci_get_free_resource(inta->vint); if (vint_id == TI_SCI_RESOURCE_NULL) return ERR_PTR(-EINVAL); + p_hwirq = ti_sci_inta_xlate_irq(inta, vint_id); + if (p_hwirq < 0) { + ret = p_hwirq; + goto free_vint; + } + vint_desc = kzalloc(sizeof(*vint_desc), GFP_KERNEL); - if (!vint_desc) - return ERR_PTR(-ENOMEM); + if (!vint_desc) { + ret = -ENOMEM; + goto free_vint; + } vint_desc->domain = domain; vint_desc->vint_id = vint_id; INIT_LIST_HEAD(&vint_desc->list); - parent_fwspec.fwnode = of_node_to_fwnode(of_irq_find_parent(dev_of_node(&inta->pdev->dev))); - parent_fwspec.param_count = 2; - parent_fwspec.param[0] = inta->pdev->id; - parent_fwspec.param[1] = vint_desc->vint_id; + parent_node = of_irq_find_parent(dev_of_node(&inta->pdev->dev)); + parent_fwspec.fwnode = of_node_to_fwnode(parent_node); + if (of_property_read_u32(parent_node, "#interrupt-cells", + &parent_fwspec.param_count)) { + ret = -EINVAL; + goto free_vint_desc; + } + + if (of_device_is_compatible(parent_node, "arm,gic-v3")) { + /* Parent is GIC */ + parent_fwspec.param[0] = 0; + parent_fwspec.param[1] = p_hwirq - 32; + parent_fwspec.param[2] = IRQ_TYPE_LEVEL_HIGH; + } else { + /* Parent is Interrupt Router */ + parent_fwspec.param[0] = p_hwirq; + } parent_virq = irq_create_fwspec_mapping(&parent_fwspec); if (parent_virq == 0) { - kfree(vint_desc); - return ERR_PTR(-EINVAL); + dev_err(&inta->pdev->dev, "Parent IRQ allocation failed\n"); + ret = -EINVAL; + goto free_vint_desc; + } vint_desc->parent_virq = parent_virq; @@ -171,6 +228,11 @@ static struct ti_sci_inta_vint_desc *ti_sci_inta_alloc_parent_irq(struct irq_dom ti_sci_inta_irq_handler, vint_desc); return vint_desc; +free_vint_desc: + kfree(vint_desc); +free_vint: + ti_sci_release_resource(inta->vint, vint_id); + return ERR_PTR(ret); } /** @@ -555,15 +617,15 @@ static int ti_sci_inta_irq_domain_probe(struct platform_device *pdev) return -EINVAL; } - inta->vint = devm_ti_sci_get_of_resource(inta->sci, dev, pdev->id, - "ti,sci-rm-range-vint"); + inta->vint = devm_ti_sci_get_resource(inta->sci, dev, pdev->id, + TI_SCI_RESASG_SUBTYPE_IA_VINT); if (IS_ERR(inta->vint)) { dev_err(dev, "VINT resource allocation failed\n"); return PTR_ERR(inta->vint); } - inta->global_event = devm_ti_sci_get_of_resource(inta->sci, dev, pdev->id, - "ti,sci-rm-range-global-event"); + inta->global_event = devm_ti_sci_get_resource(inta->sci, dev, pdev->id, + TI_SCI_RESASG_SUBTYPE_GLOBAL_EVENT_SEVT); if (IS_ERR(inta->global_event)) { dev_err(dev, "Global event resource allocation failed\n"); return PTR_ERR(inta->global_event); @@ -594,6 +656,8 @@ static int ti_sci_inta_irq_domain_probe(struct platform_device *pdev) INIT_LIST_HEAD(&inta->vint_list); mutex_init(&inta->vint_mutex); + dev_info(dev, "Interrupt Aggregator domain %d created\n", pdev->id); + return 0; } -- 2.27.0 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, UNWANTED_LANGUAGE_BODY,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 27BDDC433E8 for ; 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Fri, 24 Jul 2020 09:19:22 -0500 From: Lokesh Vutla To: Marc Zyngier , Rob Herring Subject: [PATCH v3 9/9] irqchip/ti-sci-inta: Add support for INTA directly connecting to GIC Date: Fri, 24 Jul 2020 19:48:37 +0530 Message-ID: <20200724141837.4542-10-lokeshvutla@ti.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200724141837.4542-1-lokeshvutla@ti.com> References: <20200724141837.4542-1-lokeshvutla@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200724_101931_307934_07913E53 X-CRM114-Status: GOOD ( 18.16 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Nishanth Menon , Peter Ujfalusi , Grygorii Strashko , Device Tree Mailing List , Lokesh Vutla , Sekhar Nori , Tero Kristo , Santosh Shilimkar , Thomas Gleixner , Linux ARM Mailing List Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Driver assumes that Interrupt parent to Interrupt Aggregator is always Interrupt router. This is not true always and GIC can be a parent to Interrupt Aggregator. Update the driver to detect the parent and request the parent irqs accordingly. Signed-off-by: Lokesh Vutla --- drivers/irqchip/irq-ti-sci-inta.c | 90 ++++++++++++++++++++++++++----- 1 file changed, 77 insertions(+), 13 deletions(-) diff --git a/drivers/irqchip/irq-ti-sci-inta.c b/drivers/irqchip/irq-ti-sci-inta.c index 7e3ebf6ed2cd..00c17ade118a 100644 --- a/drivers/irqchip/irq-ti-sci-inta.c +++ b/drivers/irqchip/irq-ti-sci-inta.c @@ -8,6 +8,7 @@ #include #include +#include #include #include #include @@ -128,6 +129,37 @@ static void ti_sci_inta_irq_handler(struct irq_desc *desc) chained_irq_exit(irq_desc_get_chip(desc), desc); } +/** + * ti_sci_inta_xlate_irq() - Translate hwirq to parent's hwirq. + * @inta: IRQ domain corresponding to Interrupt Aggregator + * @irq: Hardware irq corresponding to the above irq domain + * + * Return parent irq number if translation is available else -ENOENT. + */ +static int ti_sci_inta_xlate_irq(struct ti_sci_inta_irq_domain *inta, + u16 vint_id) +{ + struct device_node *np = dev_of_node(&inta->pdev->dev); + u32 base, parent_base, size; + const __be32 *range; + int len; + + range = of_get_property(np, "ti,interrupt-ranges", &len); + if (!range) + return vint_id; + + for (len /= sizeof(*range); len >= 3; len -= 3) { + base = be32_to_cpu(*range++); + parent_base = be32_to_cpu(*range++); + size = be32_to_cpu(*range++); + + if (base <= vint_id && vint_id < base + size) + return vint_id - base + parent_base; + } + + return -ENOENT; +} + /** * ti_sci_inta_alloc_parent_irq() - Allocate parent irq to Interrupt aggregator * @domain: IRQ domain corresponding to Interrupt Aggregator @@ -139,30 +171,55 @@ static struct ti_sci_inta_vint_desc *ti_sci_inta_alloc_parent_irq(struct irq_dom struct ti_sci_inta_irq_domain *inta = domain->host_data; struct ti_sci_inta_vint_desc *vint_desc; struct irq_fwspec parent_fwspec; + struct device_node *parent_node; unsigned int parent_virq; - u16 vint_id; + u16 vint_id, p_hwirq; + int ret; vint_id = ti_sci_get_free_resource(inta->vint); if (vint_id == TI_SCI_RESOURCE_NULL) return ERR_PTR(-EINVAL); + p_hwirq = ti_sci_inta_xlate_irq(inta, vint_id); + if (p_hwirq < 0) { + ret = p_hwirq; + goto free_vint; + } + vint_desc = kzalloc(sizeof(*vint_desc), GFP_KERNEL); - if (!vint_desc) - return ERR_PTR(-ENOMEM); + if (!vint_desc) { + ret = -ENOMEM; + goto free_vint; + } vint_desc->domain = domain; vint_desc->vint_id = vint_id; INIT_LIST_HEAD(&vint_desc->list); - parent_fwspec.fwnode = of_node_to_fwnode(of_irq_find_parent(dev_of_node(&inta->pdev->dev))); - parent_fwspec.param_count = 2; - parent_fwspec.param[0] = inta->pdev->id; - parent_fwspec.param[1] = vint_desc->vint_id; + parent_node = of_irq_find_parent(dev_of_node(&inta->pdev->dev)); + parent_fwspec.fwnode = of_node_to_fwnode(parent_node); + if (of_property_read_u32(parent_node, "#interrupt-cells", + &parent_fwspec.param_count)) { + ret = -EINVAL; + goto free_vint_desc; + } + + if (of_device_is_compatible(parent_node, "arm,gic-v3")) { + /* Parent is GIC */ + parent_fwspec.param[0] = 0; + parent_fwspec.param[1] = p_hwirq - 32; + parent_fwspec.param[2] = IRQ_TYPE_LEVEL_HIGH; + } else { + /* Parent is Interrupt Router */ + parent_fwspec.param[0] = p_hwirq; + } parent_virq = irq_create_fwspec_mapping(&parent_fwspec); if (parent_virq == 0) { - kfree(vint_desc); - return ERR_PTR(-EINVAL); + dev_err(&inta->pdev->dev, "Parent IRQ allocation failed\n"); + ret = -EINVAL; + goto free_vint_desc; + } vint_desc->parent_virq = parent_virq; @@ -171,6 +228,11 @@ static struct ti_sci_inta_vint_desc *ti_sci_inta_alloc_parent_irq(struct irq_dom ti_sci_inta_irq_handler, vint_desc); return vint_desc; +free_vint_desc: + kfree(vint_desc); +free_vint: + ti_sci_release_resource(inta->vint, vint_id); + return ERR_PTR(ret); } /** @@ -555,15 +617,15 @@ static int ti_sci_inta_irq_domain_probe(struct platform_device *pdev) return -EINVAL; } - inta->vint = devm_ti_sci_get_of_resource(inta->sci, dev, pdev->id, - "ti,sci-rm-range-vint"); + inta->vint = devm_ti_sci_get_resource(inta->sci, dev, pdev->id, + TI_SCI_RESASG_SUBTYPE_IA_VINT); if (IS_ERR(inta->vint)) { dev_err(dev, "VINT resource allocation failed\n"); return PTR_ERR(inta->vint); } - inta->global_event = devm_ti_sci_get_of_resource(inta->sci, dev, pdev->id, - "ti,sci-rm-range-global-event"); + inta->global_event = devm_ti_sci_get_resource(inta->sci, dev, pdev->id, + TI_SCI_RESASG_SUBTYPE_GLOBAL_EVENT_SEVT); if (IS_ERR(inta->global_event)) { dev_err(dev, "Global event resource allocation failed\n"); return PTR_ERR(inta->global_event); @@ -594,6 +656,8 @@ static int ti_sci_inta_irq_domain_probe(struct platform_device *pdev) INIT_LIST_HEAD(&inta->vint_list); mutex_init(&inta->vint_mutex); + dev_info(dev, "Interrupt Aggregator domain %d created\n", pdev->id); + return 0; } -- 2.27.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel