From patchwork Fri Aug 18 11:29:07 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mahesh Salgaonkar X-Patchwork-Id: 13357775 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5556BC7112B for ; Fri, 18 Aug 2023 11:30:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1353538AbjHRL3c (ORCPT ); Fri, 18 Aug 2023 07:29:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46534 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1376672AbjHRL3U (ORCPT ); Fri, 18 Aug 2023 07:29:20 -0400 Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 81079100; Fri, 18 Aug 2023 04:29:19 -0700 (PDT) Received: from pps.filterd (m0353729.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 37IBMQBV022601; Fri, 18 Aug 2023 11:29:16 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=subject : from : to : cc : date : message-id : content-type : content-transfer-encoding : mime-version; s=pp1; bh=fc2M/r+7xUmCuSN/G/vCZDqaS8VCMeOP55q/YgkshYY=; b=tbeDllnJwws5aDdFRXX39L1rvAH8paA4tOm8vQhheNLU65VPTDsxfV+sSUVmqu05XaON iynu3o7lA/qpqRIop+zEi5mRD1gMWh4bJEBrEDRJi3ntZ70DDiIO8gIZYZ+rMNkrcziH WDvOj8ZSMkJSDHldbyCmzAriZNTi7j3i2O23EdwMAsmtpFMinUquUhdHZgWGutNaOkHd QK7pVFLgnT1zTvbQBsfki+yUtDFBZgs2Vylpree3uq8h+t6FS+yl+vqi44BHnfca+ZGT 9lxF4CMp7wbb0571td8n+PNwpblr9p7jpQ2/ISCBAf71H79rCeZQnaj6pvbvWRox8R2y MA== Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3sj7qb05cp-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 18 Aug 2023 11:29:15 +0000 Received: from m0353729.ppops.net (m0353729.ppops.net [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 37IBN4kh024617; Fri, 18 Aug 2023 11:29:15 GMT Received: from ppma21.wdc07v.mail.ibm.com (5b.69.3da9.ip4.static.sl-reverse.com [169.61.105.91]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3sj7qb05c6-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 18 Aug 2023 11:29:15 +0000 Received: from pps.filterd (ppma21.wdc07v.mail.ibm.com [127.0.0.1]) by ppma21.wdc07v.mail.ibm.com (8.17.1.19/8.17.1.19) with ESMTP id 37IAjscM002408; Fri, 18 Aug 2023 11:29:13 GMT Received: from smtprelay03.fra02v.mail.ibm.com ([9.218.2.224]) by ppma21.wdc07v.mail.ibm.com (PPS) with ESMTPS id 3sendnxjnt-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 18 Aug 2023 11:29:13 +0000 Received: from smtpav07.fra02v.mail.ibm.com (smtpav07.fra02v.mail.ibm.com [10.20.54.106]) by smtprelay03.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 37IBTAB522217394 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 18 Aug 2023 11:29:10 GMT Received: from smtpav07.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id B1BEA2004B; Fri, 18 Aug 2023 11:29:10 +0000 (GMT) Received: from smtpav07.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id F092220043; Fri, 18 Aug 2023 11:29:08 +0000 (GMT) Received: from [9.113.206.79] (unknown [9.113.206.79]) by smtpav07.fra02v.mail.ibm.com (Postfix) with ESMTP; Fri, 18 Aug 2023 11:29:08 +0000 (GMT) Subject: [PATCH v9 1/2] powerpc/rtas: export rtas_error_rc() for reuse. From: Mahesh Salgaonkar To: linuxppc-dev Cc: Tyrel Datwyler , Nathan Lynch , "Oliver O'Halloran" , linux-pci , Bjorn Helgaas , Michael Ellerman , Linux Kernel Date: Fri, 18 Aug 2023 16:59:07 +0530 Message-ID: <169235811556.193557.1023625262204809514.stgit@jupiter> User-Agent: StGit/1.5 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: 4tK_0qneUppuI-d9HJ4FigQillqSpnQD X-Proofpoint-ORIG-GUID: qjYkAtMXet7hxwNQZK0LRWEu9iRNWaG- X-Proofpoint-UnRewURL: 0 URL was un-rewritten MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.267,Aquarius:18.0.957,Hydra:6.0.601,FMLib:17.11.176.26 definitions=2023-08-18_13,2023-08-18_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 malwarescore=0 priorityscore=1501 phishscore=0 bulkscore=0 mlxlogscore=903 spamscore=0 clxscore=1015 suspectscore=0 impostorscore=0 adultscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2306200000 definitions=main-2308180102 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Also, #define descriptive names for common rtas return codes and use it instead of numeric values. Signed-off-by: Mahesh Salgaonkar --- Change in v9: - Keep the existing function name rtas_error_rc(). - Use EXPORT_SYMBOL_GPL instead of EXPORT_SYMBOL https://lore.kernel.org/all/877cpxdksx.fsf@mail.lhotse/ Change in V7: - Until v6 there was only one patch with subject "PCI hotplug: rpaphp: Error out on busy status from get-sensor-state". Starting from v7, adding this new patch to introduce rtas_generic_errno() to handle generic rtas error codes. https://lore.kernel.org/all/20220429162545.GA79541@bhelgaas/ --- arch/powerpc/include/asm/rtas.h | 3 +++ arch/powerpc/kernel/rtas.c | 41 ++++++++++++++++++++------------------- 2 files changed, 24 insertions(+), 20 deletions(-) diff --git a/arch/powerpc/include/asm/rtas.h b/arch/powerpc/include/asm/rtas.h index 3abe15ac79db1..c697c3c746946 100644 --- a/arch/powerpc/include/asm/rtas.h +++ b/arch/powerpc/include/asm/rtas.h @@ -202,7 +202,9 @@ typedef struct { #define RTAS_USER_REGION_SIZE (64 * 1024) /* RTAS return status codes */ +#define RTAS_HARDWARE_ERROR -1 /* Hardware Error */ #define RTAS_BUSY -2 /* RTAS Busy */ +#define RTAS_INVALID_PARAMETER -3 /* Invalid indicator/domain/sensor etc. */ #define RTAS_EXTENDED_DELAY_MIN 9900 #define RTAS_EXTENDED_DELAY_MAX 9905 @@ -425,6 +427,7 @@ extern int rtas_set_indicator(int indicator, int index, int new_value); extern int rtas_set_indicator_fast(int indicator, int index, int new_value); extern void rtas_progress(char *s, unsigned short hex); int rtas_ibm_suspend_me(int *fw_status); +int rtas_error_rc(int rtas_rc); struct rtc_time; extern time64_t rtas_get_boot_time(void); diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c index c087eeee320ff..8cef3ccb41d16 100644 --- a/arch/powerpc/kernel/rtas.c +++ b/arch/powerpc/kernel/rtas.c @@ -1330,33 +1330,34 @@ bool __ref rtas_busy_delay(int status) } EXPORT_SYMBOL_GPL(rtas_busy_delay); -static int rtas_error_rc(int rtas_rc) +int rtas_error_rc(int rtas_rc) { int rc; switch (rtas_rc) { - case -1: /* Hardware Error */ - rc = -EIO; - break; - case -3: /* Bad indicator/domain/etc */ - rc = -EINVAL; - break; - case -9000: /* Isolation error */ - rc = -EFAULT; - break; - case -9001: /* Outstanding TCE/PTE */ - rc = -EEXIST; - break; - case -9002: /* No usable slot */ - rc = -ENODEV; - break; - default: - pr_err("%s: unexpected error %d\n", __func__, rtas_rc); - rc = -ERANGE; - break; + case RTAS_HARDWARE_ERROR: /* Hardware Error */ + rc = -EIO; + break; + case RTAS_INVALID_PARAMETER: /* Bad indicator/domain/etc */ + rc = -EINVAL; + break; + case -9000: /* Isolation error */ + rc = -EFAULT; + break; + case -9001: /* Outstanding TCE/PTE */ + rc = -EEXIST; + break; + case -9002: /* No usable slot */ + rc = -ENODEV; + break; + default: + pr_err("%s: unexpected error %d\n", __func__, rtas_rc); + rc = -ERANGE; + break; } return rc; } +EXPORT_SYMBOL_GPL(rtas_error_rc); int rtas_get_power_level(int powerdomain, int *level) {