From patchwork Wed Feb 23 22:05:44 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rafael Wysocki X-Patchwork-Id: 585911 Received: from smtp1.linux-foundation.org (smtp1.linux-foundation.org [140.211.169.13]) by demeter1.kernel.org (8.14.4/8.14.3) with ESMTP id p1NMRjkg017827 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=FAIL) for ; Wed, 23 Feb 2011 22:28:05 GMT Received: from daredevil.linux-foundation.org (localhost [127.0.0.1]) by smtp1.linux-foundation.org (8.14.2/8.13.5/Debian-3ubuntu1.1) with ESMTP id p1NMPqkc013990; Wed, 23 Feb 2011 14:25:53 -0800 Received: from ogre.sisk.pl (ogre.sisk.pl [217.79.144.158]) by smtp1.linux-foundation.org (8.14.2/8.13.5/Debian-3ubuntu1.1) with ESMTP id p1NMPnxF013981 for ; Wed, 23 Feb 2011 14:25:50 -0800 Received: from localhost (localhost.localdomain [127.0.0.1]) by ogre.sisk.pl (Postfix) with ESMTP id 0501B1A6658; Wed, 23 Feb 2011 22:58:55 +0100 (CET) Received: from ogre.sisk.pl ([127.0.0.1]) by localhost (ogre.sisk.pl [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 11173-09; Wed, 23 Feb 2011 22:58:36 +0100 (CET) Received: from ferrari.rjw.lan (220-bem-13.acn.waw.pl [82.210.184.220]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ogre.sisk.pl (Postfix) with ESMTP id 73F0A1A65CB; Wed, 23 Feb 2011 22:58:36 +0100 (CET) From: "Rafael J. Wysocki" To: Matthew Garrett Date: Wed, 23 Feb 2011 23:05:44 +0100 User-Agent: KMail/1.13.5 (Linux/2.6.38-rc6+; KDE/4.4.4; x86_64; ; ) MIME-Version: 1.0 Message-Id: <201102232305.45005.rjw@sisk.pl> X-Virus-Scanned: amavisd-new at ogre.sisk.pl using MkS_Vir for Linux Received-SPF: pass (localhost is always allowed.) X-Spam-Status: No, hits=-4.598 required=5 tests=AWL, BAYES_00, FRT_LEVITRA, OSDL_HEADER_SUBJECT_BRACKETED, PATCH_SUBJECT_OSDL X-Spam-Checker-Version: SpamAssassin 3.2.4-osdl_revision__1.47__ X-MIMEDefang-Filter: lf$Revision: 1.188 $ X-Scanned-By: MIMEDefang 2.63 on 140.211.169.21 Cc: ACPI Devel Mailing List , Linux PM mailing list , "Moore, Robert" , Lin Ming Subject: [linux-pm] [RFT][PATCH] ACPI / ACPICA: Implicit notify for multiple devices X-BeenThere: linux-pm@lists.linux-foundation.org X-Mailman-Version: 2.1.9 Precedence: list List-Id: Linux power management List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-pm-bounces@lists.linux-foundation.org Errors-To: linux-pm-bounces@lists.linux-foundation.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.6 (demeter1.kernel.org [140.211.167.41]); Wed, 23 Feb 2011 22:28:05 +0000 (UTC) Index: linux-2.6/drivers/acpi/acpica/aclocal.h =================================================================== --- linux-2.6.orig/drivers/acpi/acpica/aclocal.h +++ linux-2.6/drivers/acpi/acpica/aclocal.h @@ -416,10 +416,15 @@ struct acpi_gpe_handler_info { u8 originally_enabled; /* True if GPE was originally enabled */ }; +struct acpi_gpe_notify_object { + struct acpi_namespace_node *node; + struct acpi_gpe_notify_object *next; +}; + union acpi_gpe_dispatch_info { struct acpi_namespace_node *method_node; /* Method node for this GPE level */ struct acpi_gpe_handler_info *handler; /* Installed GPE handler */ - struct acpi_namespace_node *device_node; /* Parent _PRW device for implicit notify */ + struct acpi_gpe_notify_object device; /* List of _PRW devices for implicit notify */ }; /* Index: linux-2.6/drivers/acpi/acpica/evxfgpe.c =================================================================== --- linux-2.6.orig/drivers/acpi/acpica/evxfgpe.c +++ linux-2.6/drivers/acpi/acpica/evxfgpe.c @@ -198,7 +198,9 @@ acpi_setup_gpe_for_wake(acpi_handle wake acpi_status status = AE_BAD_PARAMETER; struct acpi_gpe_event_info *gpe_event_info; struct acpi_namespace_node *device_node; + struct acpi_gpe_notify_object *notify_object; acpi_cpu_flags flags; + u8 gpe_dispatch_mask; ACPI_FUNCTION_TRACE(acpi_setup_gpe_for_wake); @@ -221,27 +223,49 @@ acpi_setup_gpe_for_wake(acpi_handle wake goto unlock_and_exit; } + if (wake_device == ACPI_ROOT_OBJECT) { + goto out; + } + /* * If there is no method or handler for this GPE, then the * wake_device will be notified whenever this GPE fires (aka * "implicit notify") Note: The GPE is assumed to be * level-triggered (for windows compatibility). */ - if (((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) == - ACPI_GPE_DISPATCH_NONE) && (wake_device != ACPI_ROOT_OBJECT)) { + gpe_dispatch_mask = gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK; + if (gpe_dispatch_mask != ACPI_GPE_DISPATCH_NONE + && gpe_dispatch_mask != ACPI_GPE_DISPATCH_NOTIFY) { + goto out; + } - /* Validate wake_device is of type Device */ + /* Validate wake_device is of type Device */ - device_node = ACPI_CAST_PTR(struct acpi_namespace_node, - wake_device); - if (device_node->type != ACPI_TYPE_DEVICE) { - goto unlock_and_exit; - } + device_node = ACPI_CAST_PTR(struct acpi_namespace_node, wake_device); + if (device_node->type != ACPI_TYPE_DEVICE) { + goto unlock_and_exit; + } + + if (gpe_dispatch_mask == ACPI_GPE_DISPATCH_NONE) { gpe_event_info->flags = (ACPI_GPE_DISPATCH_NOTIFY | ACPI_GPE_LEVEL_TRIGGERED); - gpe_event_info->dispatch.device_node = device_node; + gpe_event_info->dispatch.device.node = device_node; + gpe_event_info->dispatch.device.next = NULL; + } else { + /* There are multiple devices to notify implicitly. */ + + notify_object = ACPI_ALLOCATE_ZEROED(sizeof(*notify_object)); + if (!notify_object) { + status = AE_NO_MEMORY; + goto unlock_and_exit; + } + + notify_object->node = device_node; + notify_object->next = gpe_event_info->dispatch.device.next; + gpe_event_info->dispatch.device.next = notify_object; } + out: gpe_event_info->flags |= ACPI_GPE_CAN_WAKE; status = AE_OK; Index: linux-2.6/drivers/acpi/acpica/evgpe.c =================================================================== --- linux-2.6.orig/drivers/acpi/acpica/evgpe.c +++ linux-2.6/drivers/acpi/acpica/evgpe.c @@ -457,6 +457,7 @@ static void ACPI_SYSTEM_XFACE acpi_ev_as acpi_status status; struct acpi_gpe_event_info *local_gpe_event_info; struct acpi_evaluate_info *info; + struct acpi_gpe_notify_object *notify_object; ACPI_FUNCTION_TRACE(ev_asynch_execute_gpe_method); @@ -508,10 +509,18 @@ static void ACPI_SYSTEM_XFACE acpi_ev_as * from this thread -- because handlers may in turn run other * control methods. */ - status = - acpi_ev_queue_notify_request(local_gpe_event_info->dispatch. - device_node, - ACPI_NOTIFY_DEVICE_WAKE); + status = acpi_ev_queue_notify_request( + local_gpe_event_info->dispatch.device.node, + ACPI_NOTIFY_DEVICE_WAKE); + + notify_object = local_gpe_event_info->dispatch.device.next; + while (ACPI_SUCCESS(status) && notify_object) { + status = acpi_ev_queue_notify_request( + notify_object->node, + ACPI_NOTIFY_DEVICE_WAKE); + notify_object = notify_object->next; + } + break; case ACPI_GPE_DISPATCH_METHOD: