From patchwork Tue Dec 20 09:09:04 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wen Congyang X-Patchwork-Id: 132370 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [140.186.70.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 6EB1FB703F for ; Tue, 20 Dec 2011 20:06:22 +1100 (EST) Received: from localhost ([::1]:57646 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1RcveN-0007eH-Pi for incoming@patchwork.ozlabs.org; Tue, 20 Dec 2011 04:06:19 -0500 Received: from eggs.gnu.org ([140.186.70.92]:60154) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1RcveF-0007Yg-92 for qemu-devel@nongnu.org; Tue, 20 Dec 2011 04:06:15 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Rcve9-0002FX-I6 for qemu-devel@nongnu.org; Tue, 20 Dec 2011 04:06:11 -0500 Received: from [222.73.24.84] (port=63356 helo=song.cn.fujitsu.com) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Rcve8-0002FP-Q6 for qemu-devel@nongnu.org; Tue, 20 Dec 2011 04:06:05 -0500 Received: from tang.cn.fujitsu.com (tang.cn.fujitsu.com [10.167.250.3]) by song.cn.fujitsu.com (Postfix) with ESMTP id 4636A170115; Tue, 20 Dec 2011 17:06:02 +0800 (CST) Received: from mailserver.fnst.cn.fujitsu.com (tang.cn.fujitsu.com [127.0.0.1]) by tang.cn.fujitsu.com (8.14.3/8.13.1) with ESMTP id pBK95x8C019225; Tue, 20 Dec 2011 17:06:00 +0800 Received: from [10.167.225.226] ([10.167.225.226]) by mailserver.fnst.cn.fujitsu.com (Lotus Domino Release 8.5.1FP4) with ESMTP id 2011122017051892-119345 ; Tue, 20 Dec 2011 17:05:18 +0800 Message-ID: <4EF050B0.6070104@cn.fujitsu.com> Date: Tue, 20 Dec 2011 17:09:04 +0800 From: Wen Congyang User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.9) Gecko/20100413 Fedora/3.0.4-2.fc13 Thunderbird/3.0.4 MIME-Version: 1.0 To: qemu-devel , Jan Kiszka , Dave Anderson , HATAYAMA Daisuke References: <4EF04D58.3030900@cn.fujitsu.com> In-Reply-To: <4EF04D58.3030900@cn.fujitsu.com> X-MIMETrack: Itemize by SMTP Server on mailserver/fnst(Release 8.5.1FP4|July 25, 2010) at 2011-12-20 17:05:18, Serialize by Router on mailserver/fnst(Release 8.5.1FP4|July 25, 2010) at 2011-12-20 17:05:21, Serialize complete at 2011-12-20 17:05:21 X-detected-operating-system: by eggs.gnu.org: FreeBSD 6.x (1) X-Received-From: 222.73.24.84 Subject: [Qemu-devel] [RFC][PATCH 2/8 v3] Add API to check whether a physical address is I/O address X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org This API will be used in the following patch. Signed-off-by: Wen Congyang --- cpu-common.h | 1 + exec.c | 20 ++++++++++++++++++++ 2 files changed, 21 insertions(+), 0 deletions(-) diff --git a/cpu-common.h b/cpu-common.h index 8295e4f..75c01c3 100644 --- a/cpu-common.h +++ b/cpu-common.h @@ -91,6 +91,7 @@ struct CPUPhysMemoryClient { QLIST_ENTRY(CPUPhysMemoryClient) list; }; +bool is_io_addr(target_phys_addr_t phys_addr); void cpu_register_phys_memory_client(CPUPhysMemoryClient *); void cpu_unregister_phys_memory_client(CPUPhysMemoryClient *); diff --git a/exec.c b/exec.c index 32782b4..cf0ae8b 100644 --- a/exec.c +++ b/exec.c @@ -4853,3 +4853,23 @@ void dump_exec_info(FILE *f, fprintf_function cpu_fprintf) #undef env #endif + +bool is_io_addr(target_phys_addr_t phys_addr) +{ + ram_addr_t pd; + PhysPageDesc *p; + + p = phys_page_find(phys_addr >> TARGET_PAGE_BITS); + if (!p) { + pd = IO_MEM_UNASSIGNED; + } else { + pd = p->phys_offset; + } + + if ((pd & ~TARGET_PAGE_MASK) > IO_MEM_ROM && !(pd & IO_MEM_ROMD)) { + /* I/O region */ + return true; + } + + return false; +}