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=-9.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 C3FB4C10F14 for ; Wed, 10 Apr 2019 04:16:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 894CE2133D for ; Wed, 10 Apr 2019 04:16:02 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com header.b="bcjumDDy" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727702AbfDJEQA (ORCPT ); Wed, 10 Apr 2019 00:16:00 -0400 Received: from lelv0142.ext.ti.com ([198.47.23.249]:54286 "EHLO lelv0142.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726073AbfDJEPy (ORCPT ); Wed, 10 Apr 2019 00:15:54 -0400 Received: from fllv0034.itg.ti.com ([10.64.40.246]) by lelv0142.ext.ti.com (8.15.2/8.15.2) with ESMTP id x3A4F9te090138; Tue, 9 Apr 2019 23:15:09 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1554869709; bh=Q43nU02y+wqlnIyUbcUafE3Nyo/EkaIJEtyWqRSojzo=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=bcjumDDyNIXaEDGyyBih48yl7D3tmlxcr6KqrrDHCazmoA/Mm1rRDiUJYpn6AMV7Y FQl3AUjzVb/04Ve922qaU+hxGhDOqlxw6uCOpyAF+DOUWCC+USaixo5FDzg+om4ZD7 fMSq18DwxRi/ct+ygymNOP8D7KmkH4qqUHjnuH90= Received: from DLEE115.ent.ti.com (dlee115.ent.ti.com [157.170.170.26]) by fllv0034.itg.ti.com (8.15.2/8.15.2) with ESMTPS id x3A4F95x071257 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Tue, 9 Apr 2019 23:15:09 -0500 Received: from DLEE112.ent.ti.com (157.170.170.23) by DLEE115.ent.ti.com (157.170.170.26) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1713.5; Tue, 9 Apr 2019 23:15:09 -0500 Received: from lelv0327.itg.ti.com (10.180.67.183) by DLEE112.ent.ti.com (157.170.170.23) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1713.5 via Frontend Transport; Tue, 9 Apr 2019 23:15:09 -0500 Received: from uda0131933.india.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by lelv0327.itg.ti.com (8.15.2/8.15.2) with ESMTP id x3A4EKZW029255; Tue, 9 Apr 2019 23:15:05 -0500 From: Lokesh Vutla To: Marc Zyngier , Tony Lindgren , Nishanth Menon , Santosh Shilimkar , Rob Herring , CC: Linux ARM Mailing List , , Device Tree Mailing List , Sekhar Nori , Tero Kristo , Peter Ujfalusi , Grygorii Strashko , Lokesh Vutla Subject: [PATCH v6 11/12] irqchip: ti-sci-inta: Add msi domain support Date: Wed, 10 Apr 2019 09:43:57 +0530 Message-ID: <20190410041358.16809-12-lokeshvutla@ti.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190410041358.16809-1-lokeshvutla@ti.com> References: <20190410041358.16809-1-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: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add a msi domain that is child to the INTA domain. Clients uses the INTA msi bus layer to allocate irqs in this msi domain. Signed-off-by: Lokesh Vutla --- Changes since v5: - New patch. Seperated out msi domain part from the intial patch. Marc, I feel this is too simple to be a separate driver. So I am sticking it into the same file. drivers/irqchip/Kconfig | 1 + drivers/irqchip/irq-ti-sci-inta.c | 39 ++++++++++++++++++++++++++++++- 2 files changed, 39 insertions(+), 1 deletion(-) diff --git a/drivers/irqchip/Kconfig b/drivers/irqchip/Kconfig index 946c062fcec0..e0a1ec55ca93 100644 --- a/drivers/irqchip/Kconfig +++ b/drivers/irqchip/Kconfig @@ -441,6 +441,7 @@ config TI_SCI_INTA_IRQCHIP depends on TI_SCI_PROTOCOL && ARCH_K3 select IRQ_DOMAIN select IRQ_DOMAIN_HIERARCHY + select TI_SCI_INTA_MSI_DOMAIN help This enables the irqchip driver support for K3 Interrupt aggregator over TI System Control Interface available on some new TI's SoCs. diff --git a/drivers/irqchip/irq-ti-sci-inta.c b/drivers/irqchip/irq-ti-sci-inta.c index 3eb935ebe10f..945e635847b2 100644 --- a/drivers/irqchip/irq-ti-sci-inta.c +++ b/drivers/irqchip/irq-ti-sci-inta.c @@ -18,6 +18,7 @@ #include #include #include +#include #include #include @@ -28,6 +29,9 @@ #define HWIRQ_TO_DEVID(hwirq) (((hwirq) >> (TI_SCI_DEV_ID_SHIFT)) & \ (TI_SCI_DEV_ID_MASK)) #define HWIRQ_TO_IRQID(hwirq) ((hwirq) & (TI_SCI_IRQ_ID_MASK)) +#define TO_HWIRQ(dev, index) ((((dev) & TI_SCI_DEV_ID_MASK) << \ + TI_SCI_DEV_ID_SHIFT) | \ + ((index) & TI_SCI_IRQ_ID_MASK)) #define MAX_EVENTS_PER_VINT 64 #define VINT_ENABLE_SET_OFFSET 0x0 @@ -528,9 +532,32 @@ static const struct irq_domain_ops ti_sci_inta_irq_domain_ops = { .free = ti_sci_inta_irq_domain_free, }; +static struct irq_chip ti_sci_inta_msi_irq_chip = { + .name = "MSI-INTA", + .flags = IRQCHIP_SUPPORTS_LEVEL_MSI, +}; + +static void ti_sci_inta_msi_set_desc(msi_alloc_info_t *arg, + struct msi_desc *desc) +{ + arg->desc = desc; + arg->hwirq = TO_HWIRQ(desc->inta.dev_id, desc->inta.index); +} + +static struct msi_domain_ops ti_sci_inta_msi_ops = { + .set_desc = ti_sci_inta_msi_set_desc, +}; + +static struct msi_domain_info ti_sci_inta_msi_domain_info = { + .flags = (MSI_FLAG_USE_DEF_DOM_OPS | MSI_FLAG_USE_DEF_CHIP_OPS | + MSI_FLAG_LEVEL_CAPABLE), + .ops = &ti_sci_inta_msi_ops, + .chip = &ti_sci_inta_msi_irq_chip, +}; + static int ti_sci_inta_irq_domain_probe(struct platform_device *pdev) { - struct irq_domain *parent_domain, *domain; + struct irq_domain *parent_domain, *domain, *msi_domain; struct device_node *parent_node, *node; struct ti_sci_inta_irq_domain *inta; struct device *dev = &pdev->dev; @@ -596,6 +623,16 @@ static int ti_sci_inta_irq_domain_probe(struct platform_device *pdev) return -ENOMEM; } + msi_domain = + ti_sci_inta_msi_create_irq_domain(of_node_to_fwnode(node), + &ti_sci_inta_msi_domain_info, + domain); + if (!msi_domain) { + irq_domain_remove(domain); + dev_err(dev, "Failed to allocate msi domain\n"); + return -ENOMEM; + } + INIT_LIST_HEAD(&inta->vint_list); mutex_init(&inta->vint_mutex); -- 2.21.0