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=-12.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,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 72839C2D0E2 for ; Tue, 22 Sep 2020 11:47:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3C120221EB for ; Tue, 22 Sep 2020 11:47:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726785AbgIVLrp (ORCPT ); Tue, 22 Sep 2020 07:47:45 -0400 Received: from mga06.intel.com ([134.134.136.31]:59836 "EHLO mga06.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726683AbgIVLpf (ORCPT ); Tue, 22 Sep 2020 07:45:35 -0400 IronPort-SDR: 5QpO3h5FKxJiX/FWoG3ZDGUdN8LPVxwicXeujVbN3SWFkxqOkWKT9/6o/wQDzpeBSGLkBISfUf nos8KvjL0Srw== X-IronPort-AV: E=McAfee;i="6000,8403,9751"; a="222177027" X-IronPort-AV: E=Sophos;i="5.77,290,1596524400"; d="scan'208";a="222177027" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Sep 2020 04:45:11 -0700 IronPort-SDR: 0kl/KAHpO8mJ1VbpDKs5ZIV4gT2zlBqesQQRjrkJat/oLUFgb/5VfBiqDVEQzNDjK6GliXg2zk sfIWjBvTDK3w== X-IronPort-AV: E=Sophos;i="5.77,290,1596524400"; d="scan'208";a="412633404" Received: from shsi6026.sh.intel.com (HELO localhost) ([10.239.147.135]) by fmsmga001-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Sep 2020 04:45:08 -0700 From: shuo.a.liu@intel.com To: linux-kernel@vger.kernel.org, x86@kernel.org Cc: Greg Kroah-Hartman , "H . Peter Anvin" , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Sean Christopherson , Yu Wang , Reinette Chatre , Shuo Liu , Zhi Wang , Zhenyu Wang Subject: [PATCH v4 14/17] virt: acrn: Introduce I/O ranges operation interfaces Date: Tue, 22 Sep 2020 19:43:08 +0800 Message-Id: <20200922114311.38804-15-shuo.a.liu@intel.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200922114311.38804-1-shuo.a.liu@intel.com> References: <20200922114311.38804-1-shuo.a.liu@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Shuo Liu An I/O request of a User VM, which is constructed by hypervisor, is distributed by the ACRN Hypervisor Service Module to an I/O client corresponding to the address range of the I/O request. I/O client maintains a list of address ranges. Introduce acrn_ioreq_range_{add,del}() to manage these address ranges. Signed-off-by: Shuo Liu Reviewed-by: Reinette Chatre Cc: Zhi Wang Cc: Zhenyu Wang Cc: Yu Wang Cc: Reinette Chatre Cc: Greg Kroah-Hartman --- drivers/virt/acrn/acrn_drv.h | 4 +++ drivers/virt/acrn/ioreq.c | 60 ++++++++++++++++++++++++++++++++++++ 2 files changed, 64 insertions(+) diff --git a/drivers/virt/acrn/acrn_drv.h b/drivers/virt/acrn/acrn_drv.h index 701c83319115..5b824fa1ee57 100644 --- a/drivers/virt/acrn/acrn_drv.h +++ b/drivers/virt/acrn/acrn_drv.h @@ -199,6 +199,10 @@ struct acrn_ioreq_client *acrn_ioreq_client_create(struct acrn_vm *vm, void *data, bool is_default, const char *name); void acrn_ioreq_client_destroy(struct acrn_ioreq_client *client); +int acrn_ioreq_range_add(struct acrn_ioreq_client *client, + u32 type, u64 start, u64 end); +void acrn_ioreq_range_del(struct acrn_ioreq_client *client, + u32 type, u64 start, u64 end); int acrn_msi_inject(struct acrn_vm *vm, u64 msi_addr, u64 msi_data); diff --git a/drivers/virt/acrn/ioreq.c b/drivers/virt/acrn/ioreq.c index bf194f0fbd70..acf4edfb8c74 100644 --- a/drivers/virt/acrn/ioreq.c +++ b/drivers/virt/acrn/ioreq.c @@ -101,6 +101,66 @@ int acrn_ioreq_request_default_complete(struct acrn_vm *vm, u16 vcpu) return ret; } +/** + * acrn_ioreq_range_add() - Add an iorange monitored by an ioreq client + * @client: The ioreq client + * @type: Type (ACRN_IOREQ_TYPE_MMIO or ACRN_IOREQ_TYPE_PORTIO) + * @start: Start address of iorange + * @end: End address of iorange + * + * Return: 0 on success, <0 on error + */ +int acrn_ioreq_range_add(struct acrn_ioreq_client *client, + u32 type, u64 start, u64 end) +{ + struct acrn_ioreq_range *range; + + if (end < start) { + dev_err(acrn_dev.this_device, + "Invalid IO range [0x%llx,0x%llx]\n", start, end); + return -EINVAL; + } + + range = kzalloc(sizeof(*range), GFP_KERNEL); + if (!range) + return -ENOMEM; + + range->type = type; + range->start = start; + range->end = end; + + write_lock_bh(&client->range_lock); + list_add(&range->list, &client->range_list); + write_unlock_bh(&client->range_lock); + + return 0; +} + +/** + * acrn_ioreq_range_del() - Del an iorange monitored by an ioreq client + * @client: The ioreq client + * @type: Type (ACRN_IOREQ_TYPE_MMIO or ACRN_IOREQ_TYPE_PORTIO) + * @start: Start address of iorange + * @end: End address of iorange + */ +void acrn_ioreq_range_del(struct acrn_ioreq_client *client, + u32 type, u64 start, u64 end) +{ + struct acrn_ioreq_range *range; + + write_lock_bh(&client->range_lock); + list_for_each_entry(range, &client->range_list, list) { + if (type == range->type && + start == range->start && + end == range->end) { + list_del(&range->list); + kfree(range); + break; + } + } + write_unlock_bh(&client->range_lock); +} + /* * ioreq_task() is the execution entity of handler thread of an I/O client. * The handler callback of the I/O client is called within the handler thread. -- 2.28.0