From patchwork Mon Nov 21 14:39:39 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Gleixner X-Patchwork-Id: 13051175 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A662EC4332F for ; Mon, 21 Nov 2022 14:44:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:Date:MIME-Version:References:Subject:Cc :To:From:Message-ID:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To: List-Owner; bh=9VxWj2/yEP5b85j/9eLQCtMIi/21Ys4rRfAxCSCcoDQ=; b=vdwkXU1eiwQ6vI Fb3M1EkN86nnQL3MAt3qJHzIZOab/rwdvQYhwcaMe4BTyyqFbUYLOhCib+O4Y+3NH3yamerv/RaPU nk8oNR6oyerwbgqkUqYl3BZG6oZ2uAKe2TzwsHQDHN5NNGO2PiajgPO7z7vsgixqh7RcU4gSBF8Wl uo92zQLK+KmDvJszoYH3Ej9a2435bNvLGvnrbqap1swivAJz7S3jrFDdbhs/iccZwp/et6Kfu455A RyrKjhHuDzHJ38CkwFUGbYBWf71IdxA2X6U1BuDtl6WOXyQqG/bYb/riHY59gIRQ08Wechs2l22+m J/Dylc+bdmnSnB1bOnxw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1ox811-00Elqo-FQ; Mon, 21 Nov 2022 14:43:20 +0000 Received: from galois.linutronix.de ([193.142.43.55]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1ox7xW-00EiL6-64 for linux-arm-kernel@lists.infradead.org; Mon, 21 Nov 2022 14:39:43 +0000 Message-ID: <20221121140048.849246242@linutronix.de> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1669041580; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: references:references; bh=UZS11zTOR4JGS38C/7fpGOXRWJz4E7s7evBEbCg06U4=; b=IWtyqOfanQvxMKLKPN7fGmW0o2xzn3gxDdqo42IMVg9Go9jVble5nrAW32WLYffMsexzIe 6xZqA8JwqEwxsd5s+n34HYkK4IQE/I7b5mubvR1xwecgbiLsWt+LqUXg+Nm6hAA2gZEW9l eYaVC9A321U0BFH4+X+7frVNI8v+mymmOD2j6yvTyjiMo/N9GSjfxTg2nkBR8tdcplOKXY V/FnCfBUHON7jcCpS0UpPjeSSog9cxOizd4H2nuU2F58W6IaOHoCccVypBg+JbuXx/Jbon c1qX/CWJeig/KNzt2AtIBaVjFMwfnCknfMtszTsI8iJeJCuRmA0fc3MdXtiEoQ== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1669041580; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: references:references; bh=UZS11zTOR4JGS38C/7fpGOXRWJz4E7s7evBEbCg06U4=; b=OrC9JZmx1rLqXQ93KbSuzak2wSNsDqJQEtHxMHymOfW7NHPiReiyEOeokmJ7IE84OTcH94 HsxU9DQJTVOibgDg== From: Thomas Gleixner To: LKML Cc: Will Deacon , linux-pci@vger.kernel.org, Bjorn Helgaas , Lorenzo Pieralisi , Marc Zyngier , Greg Kroah-Hartman , Jason Gunthorpe , Andrew Lunn , Gregory Clement , Sebastian Hesselbarth , Ammar Faizi , Robin Murphy , Lorenzo Pieralisi , Nishanth Menon , Tero Kristo , Santosh Shilimkar , linux-arm-kernel@lists.infradead.org, Vinod Koul , Sinan Kaya , Andy Gross , Bjorn Andersson , Mark Rutland , Shameerali Kolothum Thodi , Zenghui Yu , Shawn Guo , Sascha Hauer , Fabio Estevam Subject: [patch V2 09/40] genirq/msi: Extend msi_parent_ops References: <20221121135653.208611233@linutronix.de> MIME-Version: 1.0 Date: Mon, 21 Nov 2022 15:39:39 +0100 (CET) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221121_063942_398934_436EA7BE X-CRM114-Status: GOOD ( 10.21 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Supporting per device MSI domains on ARM64 and the zoo of interrupt mechanisms needs a bit more information than what the initial x86 implementation provides. Add the following fields: - required_flags: The flags which a parent domain requires to be set - bus_select_token: The bus token of the parent domain for select() - bus_select_mask: A bitmask of supported child domain bus types This allows to provide library functions which can be shared between various interrupt chip implementations and avoids replicating mostly similar code all over the place. Signed-off-by: Thomas Gleixner --- include/linux/msi.h | 11 +++++++++++ 1 file changed, 11 insertions(+) --- a/include/linux/msi.h +++ b/include/linux/msi.h @@ -556,6 +556,14 @@ enum { * struct msi_parent_ops - MSI parent domain callbacks and configuration info * * @supported_flags: Required: The supported MSI flags of the parent domain + * @required_flags: Optional: The required MSI flags of the parent MSI domain + * Mandatory for ARM_GIC_MSI_LIB users + * @bus_select_token: Optional: The bus token of the real parent domain for + * irq_domain::select() + * Mandatory for ARM_GIC_MSI_LIB users + * @bus_select_mask: Optional: A mask of supported BUS_DOMAINs for + * irq_domain::select() + * Mandatory for ARM_GIC_MSI_LIB users * @prefix: Optional: Prefix for the domain and chip name * @init_dev_msi_info: Required: Callback for MSI parent domains to setup parent * domain specific domain flags, domain ops and interrupt chip @@ -563,6 +571,9 @@ enum { */ struct msi_parent_ops { u32 supported_flags; + u32 required_flags; + u32 bus_select_token; + u32 bus_select_mask; const char *prefix; bool (*init_dev_msi_info)(struct device *dev, struct irq_domain *domain, struct irq_domain *msi_parent_domain,