From mboxrd@z Thu Jan 1 00:00:00 1970 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 Message-ID: <4F1788BE.2020500@cn.fujitsu.com> Date: Thu, 19 Jan 2012 11:06:38 +0800 From: Wen Congyang MIME-Version: 1.0 References: <4F1784EE.2040800@cn.fujitsu.com> In-Reply-To: <4F1784EE.2040800@cn.fujitsu.com> Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=ISO-8859-1 Subject: [Qemu-devel] [RFC][PATCH 03/15] Add API to check whether a physical address is I/O address List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel , Jan Kiszka , Dave Anderson , HATAYAMA Daisuke , Luiz Capitulino 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; +} -- 1.7.1