From patchwork Wed Apr 18 07:22:50 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wen Congyang X-Patchwork-Id: 153410 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 21CE8B6EE7 for ; Wed, 18 Apr 2012 17:20:05 +1000 (EST) Received: from localhost ([::1]:57954 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SKPBK-0006Vb-UG for incoming@patchwork.ozlabs.org; Wed, 18 Apr 2012 03:20:02 -0400 Received: from eggs.gnu.org ([208.118.235.92]:48932) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SKPB9-0006Uq-WC for qemu-devel@nongnu.org; Wed, 18 Apr 2012 03:19:57 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1SKPB2-0005jk-IB for qemu-devel@nongnu.org; Wed, 18 Apr 2012 03:19:51 -0400 Received: from [222.73.24.84] (port=36971 helo=song.cn.fujitsu.com) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SKPB2-0005in-7B for qemu-devel@nongnu.org; Wed, 18 Apr 2012 03:19:44 -0400 X-IronPort-AV: E=Sophos;i="4.75,440,1330876800"; d="scan'208";a="4780984" Received: from unknown (HELO tang.cn.fujitsu.com) ([10.167.250.3]) by song.cn.fujitsu.com with ESMTP; 18 Apr 2012 15:19:22 +0800 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 q3I7Jcea001760; Wed, 18 Apr 2012 15:19:41 +0800 Received: from [10.167.225.226] ([10.167.225.226]) by mailserver.fnst.cn.fujitsu.com (Lotus Domino Release 8.5.3) with ESMTP id 2012041815184478-55117 ; Wed, 18 Apr 2012 15:18:44 +0800 Message-ID: <4F8E6BCA.90803@cn.fujitsu.com> Date: Wed, 18 Apr 2012 15:22:50 +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 , HATAYAMA Daisuke , Luiz Capitulino References: <4F8E6B04.2050807@cn.fujitsu.com> In-Reply-To: <4F8E6B04.2050807@cn.fujitsu.com> X-MIMETrack: Itemize by SMTP Server on mailserver/fnst(Release 8.5.3|September 15, 2011) at 2012/04/18 15:18:44, Serialize by Router on mailserver/fnst(Release 8.5.3|September 15, 2011) at 2012/04/18 15:18:48, Serialize complete at 2012/04/18 15:18:48 X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 222.73.24.84 Subject: [Qemu-devel] [PATCH 02/12 v12] 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 | 2 ++ exec.c | 9 +++++++++ 2 files changed, 11 insertions(+), 0 deletions(-) diff --git a/cpu-common.h b/cpu-common.h index dca5175..fcd50dc 100644 --- a/cpu-common.h +++ b/cpu-common.h @@ -71,6 +71,8 @@ void cpu_physical_memory_unmap(void *buffer, target_phys_addr_t len, void *cpu_register_map_client(void *opaque, void (*callback)(void *opaque)); void cpu_unregister_map_client(void *cookie); +bool cpu_physical_memory_is_io(target_phys_addr_t phys_addr); + /* Coalesced MMIO regions are areas where write operations can be reordered. * This usually implies that write operations are side-effect free. This allows * batching which can make a major impact on performance when using diff --git a/exec.c b/exec.c index 77d6866..fe00b76 100644 --- a/exec.c +++ b/exec.c @@ -4662,3 +4662,12 @@ bool virtio_is_big_endian(void) #undef env #endif + +bool cpu_physical_memory_is_io(target_phys_addr_t phys_addr) +{ + MemoryRegionSection *section; + + section = phys_page_find(phys_addr >> TARGET_PAGE_BITS); + + return !is_ram_rom_romd(section); +}