From patchwork Fri May 31 06:13:49 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stewart Smith X-Patchwork-Id: 1108161 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 45FZYy5mmLz9sDX for ; Fri, 31 May 2019 16:39:50 +1000 (AEST) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=linux.ibm.com Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 45FZYy4yC8zDr6Y for ; Fri, 31 May 2019 16:39:50 +1000 (AEST) X-Original-To: skiboot@lists.ozlabs.org Delivered-To: skiboot@lists.ozlabs.org Authentication-Results: lists.ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=linux.ibm.com (client-ip=148.163.156.1; helo=mx0a-001b2d01.pphosted.com; envelope-from=stewart@linux.ibm.com; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=linux.ibm.com Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 45FZ0S3YDFzDqYX for ; Fri, 31 May 2019 16:14:16 +1000 (AEST) Received: from pps.filterd (m0098404.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x4V64J52042772 for ; Fri, 31 May 2019 02:14:12 -0400 Received: from e13.ny.us.ibm.com (e13.ny.us.ibm.com [129.33.205.203]) by mx0a-001b2d01.pphosted.com with ESMTP id 2stx4vhd8j-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Fri, 31 May 2019 02:14:12 -0400 Received: from localhost by e13.ny.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Fri, 31 May 2019 07:14:08 +0100 Received: from b01ledav003.gho.pok.ibm.com (b01ledav003.gho.pok.ibm.com [9.57.199.108]) by b01cxnp22034.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x4V6E7fj34930882 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK) for ; Fri, 31 May 2019 06:14:07 GMT Received: from b01ledav003.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 9BB10B2065 for ; Fri, 31 May 2019 06:14:07 +0000 (GMT) Received: from b01ledav003.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 58A16B205F for ; Fri, 31 May 2019 06:14:07 +0000 (GMT) Received: from birb.localdomain (unknown [9.185.142.91]) by b01ledav003.gho.pok.ibm.com (Postfix) with ESMTP for ; Fri, 31 May 2019 06:14:07 +0000 (GMT) Received: by birb.localdomain (Postfix, from userid 1000) id 6DC6750CC11; Fri, 31 May 2019 16:13:58 +1000 (AEST) From: Stewart Smith To: skiboot@lists.ozlabs.org Date: Fri, 31 May 2019 16:13:49 +1000 X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190531061351.22973-1-stewart@linux.ibm.com> References: <20190531061351.22973-1-stewart@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 x-cbid: 19053106-0064-0000-0000-000003E76F3E X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00011189; HX=3.00000242; KW=3.00000007; PH=3.00000004; SC=3.00000286; SDB=6.01211088; UDB=6.00636340; IPR=6.00992124; MB=3.00027126; MTD=3.00000008; XFM=3.00000015; UTC=2019-05-31 06:14:09 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19053106-0065-0000-0000-00003DAD78ED Message-Id: <20190531061351.22973-109-stewart@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2019-05-31_03:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=1 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=792 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1905310040 Subject: [Skiboot] [PATCH 108/110] doc: Document OPAL_CONFIG_CPU_IDLE_STATE X-BeenThere: skiboot@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Mailing list for skiboot development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: skiboot-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org Sender: "Skiboot" Signed-off-by: Stewart Smith --- .../opal-config-cpu-idle-state-99.rst | 32 +++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 doc/opal-api/opal-config-cpu-idle-state-99.rst diff --git a/doc/opal-api/opal-config-cpu-idle-state-99.rst b/doc/opal-api/opal-config-cpu-idle-state-99.rst new file mode 100644 index 000000000000..787d2cae9067 --- /dev/null +++ b/doc/opal-api/opal-config-cpu-idle-state-99.rst @@ -0,0 +1,32 @@ +.. _OPAL_CONFIG_CPU_IDLE_STATE: + +OPAL_CONFIG_CPU_IDLE_STATE +========================== + +.. code-block:: c + + #define OPAL_CONFIG_CPU_IDLE_STATE 99 + + /* + * Setup and cleanup method for fast-sleep workarounds + * state = 1 fast-sleep + * enter = 1 Enter state + * exit = 0 Exit state + */ + + #define OPAL_PM_SLEEP_ENABLED_ER1 0x00080000 /* with workaround */ + + int64_t opal_config_cpu_idle_state(uint64_t state, uint64_t enter); + +If the `OPAL_PM_SLEEP_ENABLED_ER1` bit is set on a stop state, then this OPAL +call needs to be made upon entry and exit of stop state. +This is currently needed for the `fastsleep_` idle state, present on POWER8 +systems. + +Returns +------- + +:ref:`OPAL_SUCCESS` + Applied workaround +:ref:`OPAL_PARAMETER` + Invalid state or enter/exit.