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 CCDA4D2ED11 for ; Tue, 20 Jan 2026 06:43:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=FPdcZ3oYYb4ZG+PhlxYF87J7HHXsFXSeD2DjQ2CVDUs=; b=d4csFz2yiAlAuxK3uUlt5bC0Xp i68zYHjaay+ESejeZCC+eu2wmxk/W8cKZ+vHgQWDyAKeKh9NKRC3xNaw9OYDZ91RzbNotSVNfNq+l BnNuwlX0XzFno+kLuPKQczjFQ45kXmZUKghQVIpJw6n0rPusoYuecKH9k89Agv5PFS+xxhioz4o8d BrcWzfg3i4pXipnwm3gdbcMw4W9g6QgxlK/64Clq+Cd0zzQlNeUAk/zqUyg340MonWIcGMAsRgVQj Y2kkfPQ60Eb+bIvrOW3NVgzXKUhMq9Tz9cnuyNmG0k8dVymqf9Ozxtr/c6Sm7vM0w7sfTN6ui/7GH Yo0o1jfA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vi5Sj-00000003HPZ-3Ti9; Tue, 20 Jan 2026 06:43:37 +0000 Received: from linux.microsoft.com ([13.77.154.182]) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vi5Sf-00000003HMp-35yB for linux-arm-kernel@lists.infradead.org; Tue, 20 Jan 2026 06:43:34 +0000 Received: from mrdev.corp.microsoft.com (192-184-212-33.fiber.dynamic.sonic.net [192.184.212.33]) by linux.microsoft.com (Postfix) with ESMTPSA id 54B4720B716E; Mon, 19 Jan 2026 22:43:32 -0800 (PST) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 54B4720B716E DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1768891413; bh=FPdcZ3oYYb4ZG+PhlxYF87J7HHXsFXSeD2DjQ2CVDUs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=MiATsc3swd7iNJmjeFF3w4IDEsPYdWmb2J6SCPlMQQO32Pnrw5LP6U52eGSSappj2 TqyitrZ2rdhmWEEejwZfN2zcFSnJKFrZOP8otPcC8LrvT3klwyLhWnqRm1HiJDYpAf xzPjuypRaaY68PG9Ltq37rP3R3k62wGFPm9I0euY= From: Mukesh R To: linux-kernel@vger.kernel.org, linux-hyperv@vger.kernel.org, linux-arm-kernel@lists.infradead.org, iommu@lists.linux.dev, linux-pci@vger.kernel.org, linux-arch@vger.kernel.org Cc: kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org, decui@microsoft.com, longli@microsoft.com, catalin.marinas@arm.com, will@kernel.org, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, hpa@zytor.com, joro@8bytes.org, lpieralisi@kernel.org, kwilczynski@kernel.org, mani@kernel.org, robh@kernel.org, bhelgaas@google.com, arnd@arndb.de, nunodasneves@linux.microsoft.com, mhklinux@outlook.com, romank@linux.microsoft.com Subject: [PATCH v0 05/15] mshv: Declarations and definitions for VFIO-MSHV bridge device Date: Mon, 19 Jan 2026 22:42:20 -0800 Message-ID: <20260120064230.3602565-6-mrathor@linux.microsoft.com> X-Mailer: git-send-email 2.51.2.vfs.0.1 In-Reply-To: <20260120064230.3602565-1-mrathor@linux.microsoft.com> References: <20260120064230.3602565-1-mrathor@linux.microsoft.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260119_224333_805954_B77153F9 X-CRM114-Status: GOOD ( 11.13 ) 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 From: Mukesh Rathor Add data structs needed by the subsequent patch that introduces a new module to implement VFIO-MSHV pseudo device. Signed-off-by: Mukesh Rathor --- drivers/hv/mshv_root.h | 23 +++++++++++++++++++++++ include/uapi/linux/mshv.h | 31 +++++++++++++++++++++++++++++++ 2 files changed, 54 insertions(+) diff --git a/drivers/hv/mshv_root.h b/drivers/hv/mshv_root.h index c3753b009fd8..42e1da1d545b 100644 --- a/drivers/hv/mshv_root.h +++ b/drivers/hv/mshv_root.h @@ -220,6 +220,29 @@ struct port_table_info { }; }; +struct mshv_device { + const struct mshv_device_ops *device_ops; + struct mshv_partition *device_pt; + void *device_private; + struct hlist_node device_ptnode; +}; + +struct mshv_device_ops { + const char *device_name; + long (*device_create)(struct mshv_device *dev, u32 type); + void (*device_release)(struct mshv_device *dev); + long (*device_set_attr)(struct mshv_device *dev, + struct mshv_device_attr *attr); + long (*device_has_attr)(struct mshv_device *dev, + struct mshv_device_attr *attr); +}; + +extern struct mshv_device_ops mshv_vfio_device_ops; +int mshv_vfio_ops_init(void); +void mshv_vfio_ops_exit(void); +long mshv_partition_ioctl_create_device(struct mshv_partition *partition, + void __user *user_args); + int mshv_update_routing_table(struct mshv_partition *partition, const struct mshv_user_irq_entry *entries, unsigned int numents); diff --git a/include/uapi/linux/mshv.h b/include/uapi/linux/mshv.h index dee3ece28ce5..b7b10f9e2896 100644 --- a/include/uapi/linux/mshv.h +++ b/include/uapi/linux/mshv.h @@ -252,6 +252,7 @@ struct mshv_root_hvcall { #define MSHV_GET_GPAP_ACCESS_BITMAP _IOWR(MSHV_IOCTL, 0x06, struct mshv_gpap_access_bitmap) /* Generic hypercall */ #define MSHV_ROOT_HVCALL _IOWR(MSHV_IOCTL, 0x07, struct mshv_root_hvcall) +#define MSHV_CREATE_DEVICE _IOWR(MSHV_IOCTL, 0x08, struct mshv_create_device) /* ******************************** @@ -402,4 +403,34 @@ struct mshv_sint_mask { /* hv_hvcall device */ #define MSHV_HVCALL_SETUP _IOW(MSHV_IOCTL, 0x1E, struct mshv_vtl_hvcall_setup) #define MSHV_HVCALL _IOWR(MSHV_IOCTL, 0x1F, struct mshv_vtl_hvcall) + +/* device passhthru */ +#define MSHV_CREATE_DEVICE_TEST 1 + +enum { + MSHV_DEV_TYPE_VFIO, + MSHV_DEV_TYPE_MAX, +}; + +struct mshv_create_device { + __u32 type; /* in: MSHV_DEV_TYPE_xxx */ + __u32 fd; /* out: device handle */ + __u32 flags; /* in: MSHV_CREATE_DEVICE_xxx */ +}; + +#define MSHV_DEV_VFIO_FILE 1 +#define MSHV_DEV_VFIO_FILE_ADD 1 +#define MSHV_DEV_VFIO_FILE_DEL 2 + +struct mshv_device_attr { + __u32 flags; /* no flags currently defined */ + __u32 group; /* device-defined */ + __u64 attr; /* group-defined */ + __u64 addr; /* userspace address of attr data */ +}; + +/* Device fds created with MSHV_CREATE_DEVICE */ +#define MSHV_SET_DEVICE_ATTR _IOW(MSHV_IOCTL, 0x00, struct mshv_device_attr) +#define MSHV_HAS_DEVICE_ATTR _IOW(MSHV_IOCTL, 0x01, struct mshv_device_attr) + #endif -- 2.51.2.vfs.0.1