From mboxrd@z Thu Jan 1 00:00:00 1970 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 96D0DC43217 for ; Mon, 27 Dec 2021 17:43:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230498AbhL0Rnv (ORCPT ); Mon, 27 Dec 2021 12:43:51 -0500 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:23148 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S230351AbhL0Rnu (ORCPT ); Mon, 27 Dec 2021 12:43:50 -0500 Received: from pps.filterd (m0098419.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.1.2/8.16.1.2) with SMTP id 1BRGfnE8012032; Mon, 27 Dec 2021 17:43:14 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=message-id : subject : from : to : cc : date : in-reply-to : references : content-type : content-transfer-encoding : mime-version; s=pp1; bh=LJPZ92dTRudeh24NKiz2/JbNNsiAVDg8RXKrt1Poe4c=; b=Cr/0cattw/JUbNhN2BtjHLJolBLUQcBfh9ORCm+egtDcMF10J9erNlBOMgbiOGdkv8S+ cxql1HSMRVxTS7yXgfepJ5nEF87XOxVCKIc3qwgS0Z+FrS3I5yhC7GTh6GHemfG5JSrw Zpsy9CvmmJHVZkhhW6UjS1Pl5Pzi++IiTSxG5xJatdaB/9vr6U5vXsrRhIFF1eCYqZgk ixWxI8H42maozvLPrML38SyynKljUqnxIOI6kll0w8qAAQQkO3wVJZ/cuH/MJN8D5XDn R1WxwH9aOXScJFAcktqZ3RnsSBjvSG8KoeUN3XpYZ+FthrbG3YL03xws49GYtGai0xF5 3w== Received: from pps.reinject (localhost [127.0.0.1]) by mx0b-001b2d01.pphosted.com with ESMTP id 3d7h7uh119-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 27 Dec 2021 17:43:14 +0000 Received: from m0098419.ppops.net (m0098419.ppops.net [127.0.0.1]) by pps.reinject (8.16.0.43/8.16.0.43) with SMTP id 1BRHPbrs026485; Mon, 27 Dec 2021 17:43:13 GMT Received: from ppma06fra.de.ibm.com (48.49.7a9f.ip4.static.sl-reverse.com [159.122.73.72]) by mx0b-001b2d01.pphosted.com with ESMTP id 3d7h7uh110-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 27 Dec 2021 17:43:13 +0000 Received: from pps.filterd (ppma06fra.de.ibm.com [127.0.0.1]) by ppma06fra.de.ibm.com (8.16.1.2/8.16.1.2) with SMTP id 1BRHgO0c027632; Mon, 27 Dec 2021 17:43:11 GMT Received: from b06avi18878370.portsmouth.uk.ibm.com (b06avi18878370.portsmouth.uk.ibm.com [9.149.26.194]) by ppma06fra.de.ibm.com with ESMTP id 3d5tjjb2qt-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 27 Dec 2021 17:43:11 +0000 Received: from d06av24.portsmouth.uk.ibm.com (d06av24.portsmouth.uk.ibm.com [9.149.105.60]) by b06avi18878370.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 1BRHh9RB47644996 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 27 Dec 2021 17:43:09 GMT Received: from d06av24.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id F047A42041; Mon, 27 Dec 2021 17:43:08 +0000 (GMT) Received: from d06av24.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id A8D6542042; Mon, 27 Dec 2021 17:43:07 +0000 (GMT) Received: from sig-9-145-11-194.uk.ibm.com (unknown [9.145.11.194]) by d06av24.portsmouth.uk.ibm.com (Postfix) with ESMTP; Mon, 27 Dec 2021 17:43:07 +0000 (GMT) Message-ID: Subject: Re: [RFC 03/32] ACPI: Kconfig: add HAS_IOPORT dependencies From: Niklas Schnelle To: "Rafael J. Wysocki" Cc: Arnd Bergmann , Bjorn Helgaas , John Garry , Nick Hu , Greentime Hu , Vincent Chen , Paul Walmsley , Palmer Dabbelt , Albert Ou , Guo Ren , Len Brown , Linux Kernel Mailing List , linux-arch , Linux PCI , linux-riscv@lists.infradead.org, linux-csky@vger.kernel.org, ACPI Devel Maling List Date: Mon, 27 Dec 2021 18:43:07 +0100 In-Reply-To: References: <20211227164317.4146918-1-schnelle@linux.ibm.com> <20211227164317.4146918-4-schnelle@linux.ibm.com> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.28.5 (3.28.5-18.el8) X-TM-AS-GCONF: 00 X-Proofpoint-GUID: 3eye2BZ5UPUn-S0QwdpBT27xFHxw80tM X-Proofpoint-ORIG-GUID: e__HM_n4SzUYF7nYZDFSUIgoIQiH_jGZ Content-Transfer-Encoding: 7bit X-Proofpoint-UnRewURL: 0 URL was un-rewritten MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.790,Hydra:6.0.425,FMLib:17.11.62.513 definitions=2021-12-27_09,2021-12-24_01,2021-12-02_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 malwarescore=0 phishscore=0 spamscore=0 impostorscore=0 clxscore=1015 priorityscore=1501 adultscore=0 mlxscore=0 mlxlogscore=999 lowpriorityscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2110150000 definitions=main-2112270085 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 2021-12-27 at 18:15 +0100, Rafael J. Wysocki wrote: > On Mon, Dec 27, 2021 at 6:12 PM Rafael J. Wysocki wrote: > > On Mon, Dec 27, 2021 at 6:02 PM Niklas Schnelle wrote: > > > On Mon, 2021-12-27 at 17:47 +0100, Rafael J. Wysocki wrote: > > > > On Mon, Dec 27, 2021 at 5:44 PM Niklas Schnelle wrote: > > > > > In a future patch HAS_IOPORT=n will result in inb()/outb() and friends > > > > > not being declared. As ACPI always uses I/O port access > > > > > > > > The ARM64 people may not agree with this. > > > > > > Maybe my wording is bad. This is my rewording of what Arnd had in his > > > original mail: "The ACPI subsystem needs access to I/O ports, so that > > > also gets a dependency."( > > > https://lore.kernel.org/lkml/CAK8P3a0MNbx-iuzW_-=0ab6-TTZzwV-PT_6gAC1Gp5PgYyHcrA@mail.gmail.com/ > > > ). > > > > And my point is that on ARM64 the ACPI subsystem does not need to > > access IO ports. > > > > It may not even need to access them on x86, but that depends on the > > platform firmware in use. Well at least it does compile code calling outb() in drivers/acpi/ec.c:acpi_ec_write_cmd(). Not sure if there is an alternative path at runtime if there is then we might want to instead use ifdefs to always use the non I/O port path if HAS_IOPORT is undefined. > > > > If arm64 is going to set HAS_IOPORT, then fine, but is it (and this > > applies to ia64 too)? Yes x86, arm64 and ia64 that is all arches that set ACH_SUPPORTS_ACPI all select HAS_IOPORT too. See patch 02 or the summary in the cover letter which notes that only s390, nds32, um, h8300, nios2, openrisc, hexagon, csky, and xtensa do not select it. > > > > > > > we depend on HAS_IOPORT unconditionally. > > > > > > > > > > Co-developed-by: Arnd Bergmann > > > > > Signed-off-by: Arnd Bergmann > > > > > Signed-off-by: Niklas Schnelle > > > > > --- > > > > > drivers/acpi/Kconfig | 1 + > > > > > 1 file changed, 1 insertion(+) > > > > > > > > > > diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig > > > > > index cdbdf68bd98f..b57f15817ede 100644 > > > > > --- a/drivers/acpi/Kconfig > > > > > +++ b/drivers/acpi/Kconfig > > > > > @@ -9,6 +9,7 @@ config ARCH_SUPPORTS_ACPI > > > > > menuconfig ACPI > > > > > bool "ACPI (Advanced Configuration and Power Interface) Support" > > > > > depends on ARCH_SUPPORTS_ACPI > > Besides, I'm not sure why ARCH_SUPPORTS_ACPI cannot cover this new dependency. If you prefer to have the dependency there that should work too yes. > > > > > > + depends on HAS_IOPORT > > > > > select PNP > > > > > select NLS > > > > > default y if X86 > > > > > -- > > > > > 2.32.0 > > > > > From mboxrd@z Thu Jan 1 00:00:00 1970 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A1F00C433F5 for ; Mon, 27 Dec 2021 17:44:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Date:Cc:To:From:Subject:Message-ID:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=WCWWzSz51uigUfZD0ig5reypRBuz16goMmGC9gfsP7w=; b=xAob3nQOcjD5l8 bI3vz1jBl9/JRzpwhvEXIf5hIK096qQB07g7Vl0wr5j8qe6PjwYcTEV/OY9FzVRroTYoknaDxBd7c H8l0Zg3bWwpMUscAgD0lCNlp8L0ByM+0kcjpFV75UfJNu8vKDSzU/j7x4wog5N2ptpNYNnrE2nPcU K52EJok2ZsUC8/WmLL1l9+bijB6V3d9ACDer0bSXwVVALmQXjGAxdwCbOzgoFhf99WcHEEy34Jo4D i623j1CLbiciL8l7ZB1EFl68HrLoYN+H3n5Hlu4TLsJHSrXEI3krXIjj9372UQv08pWXT4W3FpVnP 55dDtsvducHhGgQT4sXQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1n1u2I-00HA21-3p; Mon, 27 Dec 2021 17:43:50 +0000 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5] helo=mx0a-001b2d01.pphosted.com) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1n1u2F-00HA1I-6b for linux-riscv@lists.infradead.org; Mon, 27 Dec 2021 17:43:48 +0000 Received: from pps.filterd (m0098419.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.1.2/8.16.1.2) with SMTP id 1BRGfnE8012032; Mon, 27 Dec 2021 17:43:14 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=message-id : subject : from : to : cc : date : in-reply-to : references : content-type : content-transfer-encoding : mime-version; s=pp1; bh=LJPZ92dTRudeh24NKiz2/JbNNsiAVDg8RXKrt1Poe4c=; b=Cr/0cattw/JUbNhN2BtjHLJolBLUQcBfh9ORCm+egtDcMF10J9erNlBOMgbiOGdkv8S+ cxql1HSMRVxTS7yXgfepJ5nEF87XOxVCKIc3qwgS0Z+FrS3I5yhC7GTh6GHemfG5JSrw Zpsy9CvmmJHVZkhhW6UjS1Pl5Pzi++IiTSxG5xJatdaB/9vr6U5vXsrRhIFF1eCYqZgk ixWxI8H42maozvLPrML38SyynKljUqnxIOI6kll0w8qAAQQkO3wVJZ/cuH/MJN8D5XDn R1WxwH9aOXScJFAcktqZ3RnsSBjvSG8KoeUN3XpYZ+FthrbG3YL03xws49GYtGai0xF5 3w== Received: from pps.reinject (localhost [127.0.0.1]) by mx0b-001b2d01.pphosted.com with ESMTP id 3d7h7uh119-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 27 Dec 2021 17:43:14 +0000 Received: from m0098419.ppops.net (m0098419.ppops.net [127.0.0.1]) by pps.reinject (8.16.0.43/8.16.0.43) with SMTP id 1BRHPbrs026485; Mon, 27 Dec 2021 17:43:13 GMT Received: from ppma06fra.de.ibm.com (48.49.7a9f.ip4.static.sl-reverse.com [159.122.73.72]) by mx0b-001b2d01.pphosted.com with ESMTP id 3d7h7uh110-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 27 Dec 2021 17:43:13 +0000 Received: from pps.filterd (ppma06fra.de.ibm.com [127.0.0.1]) by ppma06fra.de.ibm.com (8.16.1.2/8.16.1.2) with SMTP id 1BRHgO0c027632; Mon, 27 Dec 2021 17:43:11 GMT Received: from b06avi18878370.portsmouth.uk.ibm.com (b06avi18878370.portsmouth.uk.ibm.com [9.149.26.194]) by ppma06fra.de.ibm.com with ESMTP id 3d5tjjb2qt-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 27 Dec 2021 17:43:11 +0000 Received: from d06av24.portsmouth.uk.ibm.com (d06av24.portsmouth.uk.ibm.com [9.149.105.60]) by b06avi18878370.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 1BRHh9RB47644996 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 27 Dec 2021 17:43:09 GMT Received: from d06av24.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id F047A42041; Mon, 27 Dec 2021 17:43:08 +0000 (GMT) Received: from d06av24.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id A8D6542042; Mon, 27 Dec 2021 17:43:07 +0000 (GMT) Received: from sig-9-145-11-194.uk.ibm.com (unknown [9.145.11.194]) by d06av24.portsmouth.uk.ibm.com (Postfix) with ESMTP; Mon, 27 Dec 2021 17:43:07 +0000 (GMT) Message-ID: Subject: Re: [RFC 03/32] ACPI: Kconfig: add HAS_IOPORT dependencies From: Niklas Schnelle To: "Rafael J. Wysocki" Cc: Arnd Bergmann , Bjorn Helgaas , John Garry , Nick Hu , Greentime Hu , Vincent Chen , Paul Walmsley , Palmer Dabbelt , Albert Ou , Guo Ren , Len Brown , Linux Kernel Mailing List , linux-arch , Linux PCI , linux-riscv@lists.infradead.org, linux-csky@vger.kernel.org, ACPI Devel Maling List Date: Mon, 27 Dec 2021 18:43:07 +0100 In-Reply-To: References: <20211227164317.4146918-1-schnelle@linux.ibm.com> <20211227164317.4146918-4-schnelle@linux.ibm.com> X-Mailer: Evolution 3.28.5 (3.28.5-18.el8) X-TM-AS-GCONF: 00 X-Proofpoint-GUID: 3eye2BZ5UPUn-S0QwdpBT27xFHxw80tM X-Proofpoint-ORIG-GUID: e__HM_n4SzUYF7nYZDFSUIgoIQiH_jGZ X-Proofpoint-UnRewURL: 0 URL was un-rewritten MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.790,Hydra:6.0.425,FMLib:17.11.62.513 definitions=2021-12-27_09,2021-12-24_01,2021-12-02_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 malwarescore=0 phishscore=0 spamscore=0 impostorscore=0 clxscore=1015 priorityscore=1501 adultscore=0 mlxscore=0 mlxlogscore=999 lowpriorityscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2110150000 definitions=main-2112270085 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211227_094347_396429_493DD38E X-CRM114-Status: GOOD ( 37.19 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org On Mon, 2021-12-27 at 18:15 +0100, Rafael J. Wysocki wrote: > On Mon, Dec 27, 2021 at 6:12 PM Rafael J. Wysocki wrote: > > On Mon, Dec 27, 2021 at 6:02 PM Niklas Schnelle wrote: > > > On Mon, 2021-12-27 at 17:47 +0100, Rafael J. Wysocki wrote: > > > > On Mon, Dec 27, 2021 at 5:44 PM Niklas Schnelle wrote: > > > > > In a future patch HAS_IOPORT=n will result in inb()/outb() and friends > > > > > not being declared. As ACPI always uses I/O port access > > > > > > > > The ARM64 people may not agree with this. > > > > > > Maybe my wording is bad. This is my rewording of what Arnd had in his > > > original mail: "The ACPI subsystem needs access to I/O ports, so that > > > also gets a dependency."( > > > https://lore.kernel.org/lkml/CAK8P3a0MNbx-iuzW_-=0ab6-TTZzwV-PT_6gAC1Gp5PgYyHcrA@mail.gmail.com/ > > > ). > > > > And my point is that on ARM64 the ACPI subsystem does not need to > > access IO ports. > > > > It may not even need to access them on x86, but that depends on the > > platform firmware in use. Well at least it does compile code calling outb() in drivers/acpi/ec.c:acpi_ec_write_cmd(). Not sure if there is an alternative path at runtime if there is then we might want to instead use ifdefs to always use the non I/O port path if HAS_IOPORT is undefined. > > > > If arm64 is going to set HAS_IOPORT, then fine, but is it (and this > > applies to ia64 too)? Yes x86, arm64 and ia64 that is all arches that set ACH_SUPPORTS_ACPI all select HAS_IOPORT too. See patch 02 or the summary in the cover letter which notes that only s390, nds32, um, h8300, nios2, openrisc, hexagon, csky, and xtensa do not select it. > > > > > > > we depend on HAS_IOPORT unconditionally. > > > > > > > > > > Co-developed-by: Arnd Bergmann > > > > > Signed-off-by: Arnd Bergmann > > > > > Signed-off-by: Niklas Schnelle > > > > > --- > > > > > drivers/acpi/Kconfig | 1 + > > > > > 1 file changed, 1 insertion(+) > > > > > > > > > > diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig > > > > > index cdbdf68bd98f..b57f15817ede 100644 > > > > > --- a/drivers/acpi/Kconfig > > > > > +++ b/drivers/acpi/Kconfig > > > > > @@ -9,6 +9,7 @@ config ARCH_SUPPORTS_ACPI > > > > > menuconfig ACPI > > > > > bool "ACPI (Advanced Configuration and Power Interface) Support" > > > > > depends on ARCH_SUPPORTS_ACPI > > Besides, I'm not sure why ARCH_SUPPORTS_ACPI cannot cover this new dependency. If you prefer to have the dependency there that should work too yes. > > > > > > + depends on HAS_IOPORT > > > > > select PNP > > > > > select NLS > > > > > default y if X86 > > > > > -- > > > > > 2.32.0 > > > > > _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv