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 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 1C8D8C433EF for ; Sat, 27 Nov 2021 02:12:29 +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=ypP9wvBiainKjONGV7tAOOkOl2GIeA3nl/7/4tsDuAw=; b=owLAt8/zdg3g/1 ucqVGwGyozRJJ/O+c+zFfBmAnXI7tgQWea+mvXcSUN7qb5MALTZ1+4dJwCZYYJcj9MzyR6MWv/TM9 O8E0S/7kqyOSpWH/9egzRjflOpwWA9ulxJUATrt5xeguekMDNhJITE0TuZssK9s5EiGMFb/4R5mzi 6oDxHGSiVK1+J1+K38Xz77gSFL3R7NtAs3Pu9vVM0G812Q7Uey/gKyWW3ThMRqunSn73bHxaahHGf VzkmJkWDVs33CrkwAKTk/9MVN3Y9LPtpoX87mskSNNhbPRdVs5n0q4UUy8+YCIXOLt+fHoi+PEUEe xc4LUdmXZXBHTtaCk3bQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mqnAu-00CWHg-0m; Sat, 27 Nov 2021 02:10:48 +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 1mqmPV-00CAx2-Ks for linux-arm-kernel@lists.infradead.org; Sat, 27 Nov 2021 01:21:54 +0000 Message-ID: <20211126230525.076279841@linutronix.de> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1637976108; 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=gZLgk03W9BPqX4Y47drAtN3rUO/Oc3l0uTHU4EywtJI=; b=xp79dIyGNDgmTEJjXN71Z8Xfu7At14n49J40mMbvfv8nGIsQqoHvql5Jc+iobCd6GL6ZRV KkXT+95Pj+0tGBUbgnMYwczfD+qvOeuU8eOohmnhF67bZ8F6PuRkyidQjnFrSfZoVmAhPI KI/cH+sYqlqcwDiJjYLlyXDwqW1xPIh4gkzj+2bP0ckGHxkFUeH0ChgrNxmedJbT4e95U2 bzTGR8SdP9gbYpejENS+BVQAZ0bOLgAwBR9G21uKf3jEVK9GmjS915gLQ75mnUIUWtV6W2 qn3fSFpz26z9PmGtVSfv9yCUyz+FU/BFP74/7Dz3eiCfjlxnO0Ai8aij76Usxg== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1637976108; 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=gZLgk03W9BPqX4Y47drAtN3rUO/Oc3l0uTHU4EywtJI=; b=n0jcCgglyPxdujvHRkzGdijwiCCbyDbNbX4G0/wEb9NPhuiMspG0Yspf+c+g1FjbewuoTB xyO9gV4w5SWJ/LAQ== From: Thomas Gleixner To: LKML Cc: Bjorn Helgaas , Marc Zygnier , Alex Williamson , Kevin Tian , Jason Gunthorpe , Megha Dey , Ashok Raj , linux-pci@vger.kernel.org, Greg Kroah-Hartman , Santosh Shilimkar , iommu@lists.linux-foundation.org, dmaengine@vger.kernel.org, Stuart Yoder , Laurentiu Tudor , Nishanth Menon , Tero Kristo , linux-arm-kernel@lists.infradead.org, x86@kernel.org, Vinod Koul , Mark Rutland , Will Deacon , Sinan Kaya Subject: [patch 19/37] genirq/msi: Add msi_device_data::properties References: <20211126224100.303046749@linutronix.de> MIME-Version: 1.0 Date: Sat, 27 Nov 2021 02:21:47 +0100 (CET) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211126_172149_886156_FA3DF55C X-CRM114-Status: GOOD ( 12.50 ) 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: , 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 Message-ID: <20211127012147.uQh79Bl_yTT3WufQikV5ejP9i2KMeLFT_wvY6V5jkFM@z> Add a properties field which allows core code to store information for easy retrieval in order to replace MSI descriptor fiddling. Signed-off-by: Thomas Gleixner --- include/linux/msi.h | 17 +++++++++++++++++ kernel/irq/msi.c | 12 ++++++++++++ 2 files changed, 29 insertions(+) --- a/include/linux/msi.h +++ b/include/linux/msi.h @@ -4,6 +4,7 @@ #include #include +#include #include /* Dummy shadow structures if an architecture does not define them */ @@ -141,17 +142,33 @@ struct msi_desc { /** * msi_device_data - MSI per device data * @lock: Spinlock to protect register access + * @properties: MSI properties which are interesting to drivers * @attrs: Pointer to the sysfs attribute group * @platform_data: Platform-MSI specific data */ struct msi_device_data { raw_spinlock_t lock; + unsigned long properties; const struct attribute_group **attrs; struct platform_msi_priv_data *platform_data; }; int msi_setup_device_data(struct device *dev); +/* MSI device properties */ +#define MSI_PROP_PCI_MSI BIT(0) +#define MSI_PROP_PCI_MSIX BIT(1) +#define MSI_PROP_64BIT BIT(2) + +#ifdef CONFIG_GENERIC_MSI_IRQ +bool msi_device_has_property(struct device *dev, unsigned long prop); +#else +static inline bool msi_device_has_property(struct device *dev, unsigned long prop) +{ + return false; +} +#endif + /* Helpers to hide struct msi_desc implementation details */ #define msi_desc_to_dev(desc) ((desc)->dev) #define dev_to_msi_list(dev) (&(dev)->msi_list) --- a/kernel/irq/msi.c +++ b/kernel/irq/msi.c @@ -60,6 +60,18 @@ void free_msi_entry(struct msi_desc *ent kfree(entry); } +/** + * msi_device_has_property - Check whether a device has a specific MSI property + * @dev: Pointer to the device which is queried + * @prop: Property to check for + */ +bool msi_device_has_property(struct device *dev, unsigned long prop) +{ + if (!dev->msi.data) + return false; + return !!(dev->msi.data->properties & prop); +} + void __get_cached_msi_msg(struct msi_desc *entry, struct msi_msg *msg) { *msg = entry->msg; _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel