From patchwork Wed Feb 24 21:23:58 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jake Oshins X-Patchwork-Id: 8414551 X-Patchwork-Delegate: bhelgaas@google.com Return-Path: X-Original-To: patchwork-linux-pci@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 5A2259F88A for ; Wed, 24 Feb 2016 21:27:01 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 8897520256 for ; Wed, 24 Feb 2016 21:27:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 998BC20373 for ; Wed, 24 Feb 2016 21:26:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758251AbcBXVZt (ORCPT ); Wed, 24 Feb 2016 16:25:49 -0500 Received: from o1.f.az.sendgrid.net ([208.117.55.132]:11213 "EHLO o1.f.az.sendgrid.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757230AbcBXVZs (ORCPT ); Wed, 24 Feb 2016 16:25:48 -0500 DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=sendgrid.me; h=from:to:cc:subject:in-reply-to:references; s=smtpapi; bh=++W7iVrF2JqE1hSGZ4dbGcg0iBQ=; b=aapZyR/fK7biyLrTClib2aiWJWKsc ztuEehwBk56svzh5gG6a7Q1bp1py4zDPx3upFcvPrZpgG8AOPIL1HJgWbGQKQh8B PjhUz8CLZiAvjYZ9wqMa+DiLXpoTrsXzfnmOAATVQaFokR8PQzF/Nwq/Y/hHKxsv fyMC4Lvxd9DoIA= Received: by filter0176p1las1.sendgrid.net with SMTP id filter0176p1las1.9167.56CE1FD81B 2016-02-24 21:25:44.621892432 +0000 UTC Received: from jakeoshinsu2.jakeoshinsu2.d1.internal.cloudapp.net (unknown [104.210.40.47]) by ismtpd0012p1las1.sendgrid.net (SG) with ESMTP id mT-ER-bESb-Q8E6Z0mbECw Wed, 24 Feb 2016 21:25:44.190 +0000 (UTC) From: jakeo@microsoft.com To: linux-pci@vger.kernel.org, gregkh@linuxfoundation.org, kys@microsoft.com, linux-kernel@vger.kernel.org, devel@linuxdriverproject.org, olaf@aepfle.de, apw@canonical.com, vkuznets@redhat.com, haiyangz@microsoft.com, haddenh@microsoft.com Cc: Jake Oshins Subject: [PATCH 1/5] hv: Make a function to free mmio regions through vmbus Date: Wed, 24 Feb 2016 21:23:58 +0000 Message-Id: <1456349042-16275-2-git-send-email-jakeo@microsoft.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1456349042-16275-1-git-send-email-jakeo@microsoft.com> References: <1456349042-16275-1-git-send-email-jakeo@microsoft.com> X-SG-EID: lfnueJVzSjg1mfuVqqukVH7tZvRy9mfCIcBnfbfzaMO5oAliU5rokMhPz9ogE/7UI5rAVjsh5nDcGn o2c4WyRkM8a9dXNpGrUD65q6mLa+4bf+6+GFXR4If2qIp43dZqQxL2Ako4Z+NOuSRFqXnwa6StjKQw grvp6mNcrON97JpBgImdi7ThO7L36jOBgSuXNJBiOUFXiUtESDbDnppPvA== Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org X-Spam-Status: No, score=-6.4 required=5.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, T_DKIM_INVALID, UNPARSEABLE_RELAY, URIBL_GREY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Jake Oshins This patch introduces a function that reverses everything done by vmbus_allocate_mmio(). Existing code just called release_mem_region(). Future patches in this series require a more complex sequence of actions, so this function is introduced to wrap those actions. Signed-off-by: Jake Oshins --- drivers/hv/vmbus_drv.c | 15 +++++++++++++++ include/linux/hyperv.h | 2 +- 2 files changed, 16 insertions(+), 1 deletion(-) diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c index 063e5f5..69393ff 100644 --- a/drivers/hv/vmbus_drv.c +++ b/drivers/hv/vmbus_drv.c @@ -1221,6 +1221,21 @@ int vmbus_allocate_mmio(struct resource **new, struct hv_device *device_obj, EXPORT_SYMBOL_GPL(vmbus_allocate_mmio); /** + * vmbus_free_mmio() - Free a memory-mapped I/O range. + * @start: Base address of region to release. + * @size: Size of the range to be allocated + * + * This function releases anything requested by + * vmbus_mmio_allocate(). + */ +void vmbus_free_mmio(resource_size_t start, resource_size_t size) +{ + release_mem_region(start, size); + +} +EXPORT_SYMBOL_GPL(vmbus_free_mmio); + +/** * vmbus_cpu_number_to_vp_number() - Map CPU to VP. * @cpu_number: CPU number in Linux terms * diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index a32704d..f3e0c71 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -1091,7 +1091,7 @@ int vmbus_allocate_mmio(struct resource **new, struct hv_device *device_obj, resource_size_t min, resource_size_t max, resource_size_t size, resource_size_t align, bool fb_overlap_ok); - +void vmbus_free_mmio(resource_size_t start, resource_size_t size); int vmbus_cpu_number_to_vp_number(int cpu_number); u64 hv_do_hypercall(u64 control, void *input, void *output);