From patchwork Thu Jan 19 03:06:38 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wen Congyang X-Patchwork-Id: 136742 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 0F5C8B6EE6 for ; Thu, 19 Jan 2012 14:04:39 +1100 (EST) Received: from localhost ([::1]:54845 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1RniIm-0001tx-Ug for incoming@patchwork.ozlabs.org; Wed, 18 Jan 2012 22:04:36 -0500 Received: from eggs.gnu.org ([140.186.70.92]:38536) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1RniIY-0001gR-7R for qemu-devel@nongnu.org; Wed, 18 Jan 2012 22:04:22 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1RniIX-0000T0-5g for qemu-devel@nongnu.org; Wed, 18 Jan 2012 22:04:22 -0500 Received: from [222.73.24.84] (port=54497 helo=song.cn.fujitsu.com) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1RniIW-0000Sw-Ka for qemu-devel@nongnu.org; Wed, 18 Jan 2012 22:04:21 -0500 Received: from tang.cn.fujitsu.com (tang.cn.fujitsu.com [10.167.250.3]) by song.cn.fujitsu.com (Postfix) with ESMTP id 985BB170116; Thu, 19 Jan 2012 11:04:19 +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 q0J34IJV020369; Thu, 19 Jan 2012 11:04:19 +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 2012011911031114-379161 ; Thu, 19 Jan 2012 11:03:11 +0800 Message-ID: <4F1788BE.2020500@cn.fujitsu.com> Date: Thu, 19 Jan 2012 11:06:38 +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 , Luiz Capitulino References: <4F1784EE.2040800@cn.fujitsu.com> In-Reply-To: <4F1784EE.2040800@cn.fujitsu.com> X-MIMETrack: Itemize by SMTP Server on mailserver/fnst(Release 8.5.1FP4|July 25, 2010) at 2012-01-19 11:03:11, Serialize by Router on mailserver/fnst(Release 8.5.1FP4|July 25, 2010) at 2012-01-19 11:03:11, Serialize complete at 2012-01-19 11:03:11 X-detected-operating-system: by eggs.gnu.org: FreeBSD 6.x (1) X-Received-From: 222.73.24.84 Subject: [Qemu-devel] [RFC][PATCH 03/15] 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 | 16 ++++++++++++++++ 2 files changed, 18 insertions(+), 0 deletions(-) diff --git a/cpu-common.h b/cpu-common.h index a40c57d..d047137 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 is_io_addr(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 7f9f730..adc4e74 100644 --- a/exec.c +++ b/exec.c @@ -4411,3 +4411,19 @@ tb_page_addr_t get_page_addr_code(CPUState *env1, target_ulong addr) #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); + pd = p.phys_offset; + + if (!is_ram_rom_romd(pd)) { + /* I/O region */ + return true; + } + + return false; +}