From patchwork Sun Oct 11 03:52:36 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiao Guangrong X-Patchwork-Id: 528647 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 2B02F1402B7 for ; Sun, 11 Oct 2015 07:01:01 +1100 (AEDT) Received: from localhost ([::1]:46062 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Zl0KB-00048l-0T for incoming@patchwork.ozlabs.org; Sat, 10 Oct 2015 16:00:59 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:50190) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Zl0Hi-0008RB-0N for qemu-devel@nongnu.org; Sat, 10 Oct 2015 15:58:26 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Zl0Hh-0003dg-3N for qemu-devel@nongnu.org; Sat, 10 Oct 2015 15:58:25 -0400 Received: from mga03.intel.com ([134.134.136.65]:60642) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Zl0Hg-0003bu-VF for qemu-devel@nongnu.org; Sat, 10 Oct 2015 15:58:25 -0400 Received: from orsmga003.jf.intel.com ([10.7.209.27]) by orsmga103.jf.intel.com with ESMTP; 10 Oct 2015 12:58:25 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.17,664,1437462000"; d="scan'208";a="661782943" Received: from xiaoreal1.sh.intel.com (HELO xiaoreal1.sh.intel.com.sh.intel.com) ([10.239.48.79]) by orsmga003.jf.intel.com with ESMTP; 10 Oct 2015 12:58:21 -0700 From: Xiao Guangrong To: pbonzini@redhat.com, imammedo@redhat.com Date: Sun, 11 Oct 2015 11:52:36 +0800 Message-Id: <1444535584-18220-5-git-send-email-guangrong.xiao@linux.intel.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1444535584-18220-1-git-send-email-guangrong.xiao@linux.intel.com> References: <1444535584-18220-1-git-send-email-guangrong.xiao@linux.intel.com> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 134.134.136.65 Cc: Xiao Guangrong , ehabkost@redhat.com, kvm@vger.kernel.org, mst@redhat.com, gleb@kernel.org, mtosatti@redhat.com, qemu-devel@nongnu.org, stefanha@redhat.com, dan.j.williams@intel.com, rth@twiddle.net Subject: [Qemu-devel] [PATCH v3 04/32] acpi: add aml_mutex, aml_acquire, aml_release 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 Implement Mutex, Acquire and Release terms which are used by NVDIMM _DSM method in later patch Signed-off-by: Xiao Guangrong --- hw/acpi/aml-build.c | 32 ++++++++++++++++++++++++++++++++ include/hw/acpi/aml-build.h | 3 +++ 2 files changed, 35 insertions(+) diff --git a/hw/acpi/aml-build.c b/hw/acpi/aml-build.c index 9fe5e7b..ab52692 100644 --- a/hw/acpi/aml-build.c +++ b/hw/acpi/aml-build.c @@ -1164,6 +1164,38 @@ Aml *aml_create_field(Aml *srcbuf, Aml *index, Aml *len, const char *name) return var; } +/* ACPI 1.0b: 16.2.5.2 Named Objects Encoding: DefMutex */ +Aml *aml_mutex(const char *name, uint8_t flags) +{ + Aml *var = aml_alloc(); + build_append_byte(var->buf, 0x5B); /* ExtOpPrefix */ + build_append_byte(var->buf, 0x01); /* MutexOp */ + build_append_namestring(var->buf, "%s", name); + build_append_byte(var->buf, flags); + return var; +} + +/* ACPI 1.0b: 16.2.5.4 Type 2 Opcodes Encoding: DefAcquire */ +Aml *aml_acquire(Aml *mutex, uint16_t timeout) +{ + Aml *var = aml_alloc(); + build_append_byte(var->buf, 0x5B); /* ExtOpPrefix */ + build_append_byte(var->buf, 0x23); /* AcquireOp */ + aml_append(var, mutex); + build_append_int_noprefix(var->buf, timeout, sizeof(timeout)); + return var; +} + +/* ACPI 1.0b: 16.2.5.3 Type 1 Opcodes Encoding: DefRelease */ +Aml *aml_release(Aml *mutex) +{ + Aml *var = aml_alloc(); + build_append_byte(var->buf, 0x5B); /* ExtOpPrefix */ + build_append_byte(var->buf, 0x27); /* ReleaseOp */ + aml_append(var, mutex); + return var; +} + void build_header(GArray *linker, GArray *table_data, AcpiTableHeader *h, const char *sig, int len, uint8_t rev) diff --git a/include/hw/acpi/aml-build.h b/include/hw/acpi/aml-build.h index 7e1c43b..d494c0c 100644 --- a/include/hw/acpi/aml-build.h +++ b/include/hw/acpi/aml-build.h @@ -277,6 +277,9 @@ Aml *aml_unicode(const char *str); Aml *aml_derefof(Aml *arg); Aml *aml_sizeof(Aml *arg); Aml *aml_create_field(Aml *srcbuf, Aml *index, Aml *len, const char *name); +Aml *aml_mutex(const char *name, uint8_t flags); +Aml *aml_acquire(Aml *mutex, uint16_t timeout); +Aml *aml_release(Aml *mutex); void build_header(GArray *linker, GArray *table_data,