From patchwork Thu Apr 7 12:03:24 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shannon Zhao X-Patchwork-Id: 8771911 Return-Path: X-Original-To: patchwork-xen-devel@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 1D6EB9F39A for ; Thu, 7 Apr 2016 12:09:36 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 3343620222 for ; Thu, 7 Apr 2016 12:09:35 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 1184820034 for ; Thu, 7 Apr 2016 12:09:34 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ao8j0-0003BA-Us; Thu, 07 Apr 2016 12:07:50 +0000 Received: from mail6.bemta14.messagelabs.com ([193.109.254.103]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ao8j0-0003Ay-21 for xen-devel@lists.xen.org; Thu, 07 Apr 2016 12:07:50 +0000 Received: from [193.109.254.147] by server-3.bemta-14.messagelabs.com id 99/98-03304-59D46075; Thu, 07 Apr 2016 12:07:49 +0000 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrCIsWRWlGSWpSXmKPExsVSPpHPUXeKL1u 4QesxI4slHxezODB6HN39mymAMYo1My8pvyKBNePVxOvsBRd5K9Zvf8rYwPiKu4uRi0NI4BSj xOw/CxkhnN2MEv9OvWHtYuTkYBPQlfi4cQp7FyMHh4iAi8Sxz14gNcwC25gkjrZuYwOpERbwl WiZPo8RxGYRUJH4fGwhM4jNK+AhseDBL7A5EgIaEit7J7CA2JwCnhJt7RPB4kJANTta5jFB1A tKnJz5BKyGWUBC4uCLF8wQvYoSbetPskHYkhIHV9xgATlCAuTqL7tnQyVMJc69/s08gVFwFpJ Zs5DMWsDItIpRozi1qCy1SNfQQi+pKDM9oyQ3MTNH19DQRC83tbg4MT01JzGpWC85P3cTIzBE 6xkYGHcwHtnueYhRkoNJSZR3uitbuBBfUn5KZUZicUZ8UWlOavEhRg0ODoHeNasvMEqx5OXnp SpJ8Nb6ANUJFqWmp1akZeYAowimVIKDR0mEdy9Imre4IDG3ODMdInWKUVFKnDcMJCEAksgozY Nrg0XuJUZZKWFeRgYGBiGegtSi3MwSVPlXjOIcjErCvD0gU3gy80rgpr8CWswEtPgCP9jikkS ElFQDY/q2VDG793xzmViWcOp9XFT6v9v1/jqm8/fPGHxZL7OzT/nd8/t3tH7oT9wVvXddaWyv YuT1r4vUmx98Wq9Y7/nb6sEXS7MJHaerbK8l/Xymu0xr9p2TrXXyMpaBHEEis02lzh98PFeqi lOfTVDoU4bwu43rlMrl3vBIMCv5nejcZ+l398QCXyWW4oxEQy3mouJEALWhzsvXAgAA X-Env-Sender: zhaoshenglong@huawei.com X-Msg-Ref: server-5.tower-27.messagelabs.com!1460030864!36228017!1 X-Originating-IP: [119.145.14.65] X-SpamReason: No, hits=0.0 required=7.0 tests=sa_preprocessor: VHJ1c3RlZCBJUDogMTE5LjE0NS4xNC42NSA9PiA3NzQ2Mw==\n X-StarScan-Received: X-StarScan-Version: 8.28; banners=-,-,- X-VirusChecked: Checked Received: (qmail 51688 invoked from network); 7 Apr 2016 12:07:48 -0000 Received: from szxga02-in.huawei.com (HELO szxga02-in.huawei.com) (119.145.14.65) by server-5.tower-27.messagelabs.com with RC4-SHA encrypted SMTP; 7 Apr 2016 12:07:48 -0000 Received: from 172.24.1.47 (EHLO SZXEML424-HUB.china.huawei.com) ([172.24.1.47]) by szxrg02-dlp.huawei.com (MOS 4.3.7-GA FastPath queued) with ESMTP id DEU23415; Thu, 07 Apr 2016 20:04:19 +0800 (CST) Received: from HGHY1Z002260041.china.huawei.com (10.177.16.142) by SZXEML424-HUB.china.huawei.com (10.82.67.153) with Microsoft SMTP Server id 14.3.235.1; Thu, 7 Apr 2016 20:04:11 +0800 From: Shannon Zhao To: , Date: Thu, 7 Apr 2016 20:03:24 +0800 Message-ID: <1460030614-16112-8-git-send-email-zhaoshenglong@huawei.com> X-Mailer: git-send-email 1.9.0.msysgit.0 In-Reply-To: <1460030614-16112-1-git-send-email-zhaoshenglong@huawei.com> References: <1460030614-16112-1-git-send-email-zhaoshenglong@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.177.16.142] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A020202.57064CC5.0309, ss=1, re=0.000, recu=0.000, reip=0.000, cl=1, cld=1, fgs=0, ip=0.0.0.0, so=2013-06-18 04:22:30, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: a8e2856ed40636c0ea85e56cae3c5af2 Cc: devicetree@vger.kernel.org, linux-efi@vger.kernel.org, catalin.marinas@arm.com, will.deacon@arm.com, linux-kernel@vger.kernel.org, xen-devel@lists.xen.org, julien.grall@arm.com, david.vrabel@citrix.com, peter.huangpeng@huawei.com, shannon.zhao@linaro.org Subject: [Xen-devel] [PATCH v11 07/17] Xen: ARM: Add support for mapping AMBA device mmio X-BeenThere: xen-devel@lists.xen.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, UNPARSEABLE_RELAY 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: Shannon Zhao Add a bus_notifier for AMBA bus device in order to map the device mmio regions when DOM0 booting with ACPI. Signed-off-by: Shannon Zhao Reviewed-by: Stefano Stabellini Reviewed-by: Julien Grall --- drivers/xen/arm-device.c | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) diff --git a/drivers/xen/arm-device.c b/drivers/xen/arm-device.c index b918e8e..778acf8 100644 --- a/drivers/xen/arm-device.c +++ b/drivers/xen/arm-device.c @@ -151,3 +151,46 @@ static int __init register_xen_platform_notifier(void) } arch_initcall(register_xen_platform_notifier); + +#ifdef CONFIG_ARM_AMBA +#include + +static int xen_amba_notifier(struct notifier_block *nb, + unsigned long action, void *data) +{ + struct amba_device *adev = to_amba_device(data); + int r = 0; + + switch (action) { + case BUS_NOTIFY_ADD_DEVICE: + r = xen_map_device_mmio(&adev->res, 1); + break; + case BUS_NOTIFY_DEL_DEVICE: + r = xen_unmap_device_mmio(&adev->res, 1); + break; + default: + return NOTIFY_DONE; + } + if (r) + dev_err(&adev->dev, "AMBA: Failed to %s device %s MMIO!\n", + action == BUS_NOTIFY_ADD_DEVICE ? "map" : + (action == BUS_NOTIFY_DEL_DEVICE ? "unmap" : "?"), + adev->dev.init_name); + + return NOTIFY_OK; +} + +static struct notifier_block amba_device_nb = { + .notifier_call = xen_amba_notifier, +}; + +static int __init register_xen_amba_notifier(void) +{ + if (!xen_initial_domain() || acpi_disabled) + return 0; + + return bus_register_notifier(&amba_bustype, &amba_device_nb); +} + +arch_initcall(register_xen_amba_notifier); +#endif