From patchwork Wed Mar 14 09:18:08 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wen Congyang X-Patchwork-Id: 146583 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 CC41CB6EF3 for ; Wed, 14 Mar 2012 20:16:42 +1100 (EST) Received: from localhost ([::1]:33592 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1S7kJx-0006FD-CU for incoming@patchwork.ozlabs.org; Wed, 14 Mar 2012 05:16:37 -0400 Received: from eggs.gnu.org ([208.118.235.92]:42434) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1S7kJl-0006E2-UQ for qemu-devel@nongnu.org; Wed, 14 Mar 2012 05:16:31 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1S7kJg-0004qa-JW for qemu-devel@nongnu.org; Wed, 14 Mar 2012 05:16:25 -0400 Received: from [222.73.24.84] (port=27194 helo=song.cn.fujitsu.com) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1S7kJg-0004q4-8J for qemu-devel@nongnu.org; Wed, 14 Mar 2012 05:16:20 -0400 X-IronPort-AV: E=Sophos;i="4.73,583,1325433600"; d="scan'208";a="4532810" Received: from unknown (HELO tang.cn.fujitsu.com) ([10.167.250.3]) by song.cn.fujitsu.com with ESMTP; 14 Mar 2012 17:16:09 +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 q2E9GER8014401; Wed, 14 Mar 2012 17:16:14 +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 2012031417141241-1021417 ; Wed, 14 Mar 2012 17:14:12 +0800 Message-ID: <4F606250.5070902@cn.fujitsu.com> Date: Wed, 14 Mar 2012 17:18:08 +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 , Eric Blake References: <4F5FFC63.3060300@cn.fujitsu.com> <4F5FFD0D.8040508@cn.fujitsu.com> In-Reply-To: <4F5FFD0D.8040508@cn.fujitsu.com> X-MIMETrack: Itemize by SMTP Server on mailserver/fnst(Release 8.5.1FP4|July 25, 2010) at 2012-03-14 17:14:12, Serialize by Router on mailserver/fnst(Release 8.5.1FP4|July 25, 2010) at 2012-03-14 17:14:15, Serialize complete at 2012-03-14 17:14:15 X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 222.73.24.84 Subject: [Qemu-devel] [RESEND][PATCH 02/14 v9] 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 0c86bce..743dc12 100644 --- a/exec.c +++ b/exec.c @@ -4646,3 +4646,12 @@ 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); +}