[{"id":1763781,"web_url":"http://patchwork.ozlabs.org/comment/1763781/","msgid":"<32679e9c-7ad7-a632-4842-6e8e8b820d26@caviumnetworks.com>","list_archive_url":null,"date":"2017-09-06T02:09:31","subject":"Re: [PATCH] gpio: thunderx: select IRQ_DOMAIN_HIERARCHY instead of\n\tdepends on","submitter":{"id":721,"url":"http://patchwork.ozlabs.org/api/people/721/","name":"David Daney","email":"ddaney@caviumnetworks.com"},"content":"On 09/05/2017 06:40 PM, Masahiro Yamada wrote:\n> IRQ_DOMAIN_HIERARCHY is not user-configurable, but supposed to be\n> selected by drivers that need IRQ domain hierarchy support.\n> \n> GPIO_THUNDERX is the only user of \"depends on IRQ_DOMAIN_HIERARCHY\".\n> This means, we can not enable GPIO_THUNDERX unless other drivers\n> select IRQ_DOMAIN_HIERARCHY elsewhere. This is odd. Flip the logic.\n> \n> Signed-off-by: Masahiro Yamada \n\nIRQ_DOMAIN_HIERARCHY is set as a result of ARCH_THUNDER (this SoC \nhardware), so it actually works as-is. That said, this looks like a \nreasonable improvement, and will allow the COMPILE_TEST to enable it, so...\n\nAcked-by: David Daney \n\n\n> ---\n> \n> drivers/gpio/Kconfig | 3 ++-\n> 1 file changed, 2 insertions(+), 1 deletion(-)\n> \n> diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig\n> index 3388d54..3f80f16 100644\n> --- a/drivers/gpio/Kconfig\n> +++ b/drivers/gpio/Kconfig\n> @@ -453,7 +453,8 @@ config GPIO_TS4800\n> config GPIO_THUNDERX\n> \ttristate \"Cavium ThunderX/OCTEON-TX GPIO\"\n> \tdepends on ARCH_THUNDER || (64BIT && COMPILE_TEST)\n> -\tdepends on PCI_MSI && IRQ_DOMAIN_HIERARCHY\n> +\tdepends on PCI_MSI\n> +\tselect IRQ_DOMAIN_HIERARCHY\n> \tselect IRQ_FASTEOI_HIERARCHY_HANDLERS\n> \thelp\n> \t Say yes here to support the on-chip GPIO lines on the ThunderX\n> \n\n--\nTo unsubscribe from this list: send the line \"unsubscribe linux-gpio\" in\nthe body of a message to majordomo@vger.kernel.org\nMore majordomo info at http://vger.kernel.org/majordomo-info.html","headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@bilbo.ozlabs.org","Authentication-Results":["ozlabs.org;\n\tspf=none (mailfrom) smtp.mailfrom=vger.kernel.org\n\t(client-ip=209.132.180.67; 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Wed, 6 Sep 2017 02:09:40 +0000"],"DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/relaxed;\n\td=CAVIUMNETWORKS.onmicrosoft.com; s=selector1-cavium-com;\n\th=From:Date:Subject:Message-ID:Content-Type:MIME-Version;\n\tbh=ub9opYC8dU2F1A2VgbHA7cGfq4G+KijUJqIzqE8/3eE=;\n\tb=YulfP/GkvL1p71St/lfB6aP1IWPLHkI9BnNIesLumuOcOVhc9uHSlMY/UDYmklGIH1j3XdFO9N2opltvrB1sQnfrLd+zywsNtGQwQLmFcgv9CjN4RoySizgiYrk5Im5LUAzf0PFLMGSECFrlFCGWa7uu8MgdJo1WU4t4Lrlm27s=","Subject":"Re: [PATCH] gpio: thunderx: select IRQ_DOMAIN_HIERARCHY instead of\n\tdepends on","To":"Masahiro Yamada ,\n\tlinux-gpio@vger.kernel.org","Cc":"David Daney ,\n\tLinus Walleij , linux-kernel@vger.kernel.org","References":"<1504662052-12478-1-git-send-email-yamada.masahiro@socionext.com>","From":"David Daney ","Message-ID":"<32679e9c-7ad7-a632-4842-6e8e8b820d26@caviumnetworks.com>","Date":"Tue, 5 Sep 2017 19:09:31 -0700","User-Agent":"Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101\n\tThunderbird/52.2.1","MIME-Version":"1.0","In-Reply-To":"<1504662052-12478-1-git-send-email-yamada.masahiro@socionext.com>","Content-Type":"text/plain; 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SFP:1101; SCL:1; SRVR:MWHPR07MB3503;\n\tH:ddl.caveonetworks.com; FPR:; SPF:None; PTR:InfoNoRecords;\n\tA:1; MX:1; LANG:en; ","Received-SPF":"None (protection.outlook.com: cavium.com does not designate\n\tpermitted sender hosts)","SpamDiagnosticOutput":"1:99","SpamDiagnosticMetadata":"NSPM","X-OriginatorOrg":"caviumnetworks.com","X-MS-Exchange-CrossTenant-OriginalArrivalTime":"06 Sep 2017 02:09:40.4145\n\t(UTC)","X-MS-Exchange-CrossTenant-FromEntityHeader":"Hosted","X-MS-Exchange-CrossTenant-Id":"711e4ccf-2e9b-4bcf-a551-4094005b6194","X-MS-Exchange-Transport-CrossTenantHeadersStamped":"MWHPR07MB3503","Sender":"linux-gpio-owner@vger.kernel.org","Precedence":"bulk","List-ID":"","X-Mailing-List":"linux-gpio@vger.kernel.org"}},{"id":1763805,"web_url":"http://patchwork.ozlabs.org/comment/1763805/","msgid":"","list_archive_url":null,"date":"2017-09-06T04:20:11","subject":"Re: [PATCH] gpio: thunderx: select IRQ_DOMAIN_HIERARCHY instead of\n\tdepends on","submitter":{"id":65882,"url":"http://patchwork.ozlabs.org/api/people/65882/","name":"Masahiro Yamada","email":"yamada.masahiro@socionext.com"},"content":"Hi David,\n\n\n2017-09-06 11:09 GMT+09:00 David Daney :\n> On 09/05/2017 06:40 PM, Masahiro Yamada wrote:\n>>\n>> IRQ_DOMAIN_HIERARCHY is not user-configurable, but supposed to be\n>> selected by drivers that need IRQ domain hierarchy support.\n>>\n>> GPIO_THUNDERX is the only user of \"depends on IRQ_DOMAIN_HIERARCHY\".\n>> This means, we can not enable GPIO_THUNDERX unless other drivers\n>> select IRQ_DOMAIN_HIERARCHY elsewhere. This is odd. Flip the logic.\n>>\n>> Signed-off-by: Masahiro Yamada \n>\n>\n> IRQ_DOMAIN_HIERARCHY is set as a result of ARCH_THUNDER (this SoC hardware),\n> so it actually works as-is.\n\n\nRight, ARCH_THUNDER does not select it directly,\nbut does it indirectly. (this is not so clear...)\n\nARCH_THUNDER -> ARM64 -> ARM_GIC -> IRQ_DOMAIN_HIERARCHY\n\n\n\n> That said, this looks like a reasonable\n> improvement, and will allow the COMPILE_TEST to enable it, so...\n>\n> Acked-by: David Daney \n\n\nBTW, I could not understand your intention of\n(64BIT && COMPILE_TEST)\n\nWhy can COMPILE_TEST be enabled when 64BIT?","headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@bilbo.ozlabs.org","Authentication-Results":["ozlabs.org;\n\tspf=none (mailfrom) smtp.mailfrom=vger.kernel.org\n\t(client-ip=209.132.180.67; helo=vger.kernel.org;\n\tenvelope-from=linux-gpio-owner@vger.kernel.org;\n\treceiver=)","ozlabs.org;\n\tdkim=fail reason=\"signature verification failed\" (2048-bit key;\n\tunprotected) header.d=nifty.com header.i=@nifty.com\n\theader.b=\"ZKgl2K9D\"; dkim-atps=neutral"],"Received":["from vger.kernel.org (vger.kernel.org [209.132.180.67])\n\tby ozlabs.org (Postfix) with ESMTP id 3xn9PT2kwZz9s82\n\tfor ;\n\tWed, 6 Sep 2017 14:21:01 +1000 (AEST)","(majordomo@vger.kernel.org) by vger.kernel.org via listexpand\n\tid S1750819AbdIFEU7 (ORCPT );\n\tWed, 6 Sep 2017 00:20:59 -0400","from conssluserg-04.nifty.com ([210.131.2.83]:28023 \"EHLO\n\tconssluserg-04.nifty.com\" rhost-flags-OK-OK-OK-OK) by vger.kernel.org\n\twith ESMTP id S1750786AbdIFEU6 (ORCPT\n\t); Wed, 6 Sep 2017 00:20:58 -0400","from mail-yw0-f181.google.com (mail-yw0-f181.google.com\n\t[209.85.161.181]) (authenticated)\n\tby conssluserg-04.nifty.com with ESMTP id v864KqKh006522;\n\tWed, 6 Sep 2017 13:20:52 +0900","by mail-yw0-f181.google.com with SMTP id r85so3423747ywg.1;\n\tTue, 05 Sep 2017 21:20:52 -0700 (PDT)","by 10.37.164.225 with HTTP; Tue, 5 Sep 2017 21:20:11 -0700 (PDT)"],"DKIM-Filter":"OpenDKIM Filter v2.10.3 conssluserg-04.nifty.com v864KqKh006522","DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/relaxed; d=nifty.com;\n\ts=dec2015msa; t=1504671652;\n\tbh=4INNULHCdsU/UQSkbEc/Qs2ttiuS8g1ph20GGeWYM28=;\n\th=In-Reply-To:References:From:Date:Subject:To:Cc:From;\n\tb=ZKgl2K9DNMaD+FUvC6vr72Bwtc05nqfER0BDq7cdIw2niuMZTlqISoo27FFZ4qb5J\n\tsLRs3lUEhxxSxfe7j84k7rODgpqRTtiEyNfU7e/8+nZuaSZc8fxPX0s3wpFyjOYo8h\n\t4h5yEW8bcSpfHm71B6etTDH2/ca/5+OjE7vX5DDeLiF3t8gATaQ0FkibpW3ktLxel6\n\t8Hw/Xiri6CC6xPAmM1MRXxOAv87JLy63tPT0zUneh5E5iSDhcm8RnRRh8VehWu89z7\n\tdXAXZ0wNrdqF9vxEN0Jrmf6YRmQBl/fgPv0yOwhELqZhGms44/MQRN2RGwuiasEmRq\n\tZCGD7FxRtl2Qg==","X-Nifty-SrcIP":"[209.85.161.181]","X-Gm-Message-State":"AHPjjUg+3g21prGtmaeVt4wu/RRbGrnBMLHCUkVttjPk3pIiREAdsl11\n\t1yVfX/nEqZqV7TcjwPdB0Lv9k5AsyQ==","X-Google-Smtp-Source":"ADKCNb4Xln5xENf1PjOyLW4VaBj7PIEb032leQT1PWUFYIvADxBl1CPVWgHUhmBsUw1HgXtyqnOW1E05ZHH5xI5Brfk=","X-Received":"by 10.129.132.15 with SMTP id u15mr1083093ywf.321.1504671651567; \n\tTue, 05 Sep 2017 21:20:51 -0700 (PDT)","MIME-Version":"1.0","In-Reply-To":"<32679e9c-7ad7-a632-4842-6e8e8b820d26@caviumnetworks.com>","References":"<1504662052-12478-1-git-send-email-yamada.masahiro@socionext.com>\n\t<32679e9c-7ad7-a632-4842-6e8e8b820d26@caviumnetworks.com>","From":"Masahiro Yamada ","Date":"Wed, 6 Sep 2017 13:20:11 +0900","X-Gmail-Original-Message-ID":"","Message-ID":"","Subject":"Re: [PATCH] gpio: thunderx: select IRQ_DOMAIN_HIERARCHY instead of\n\tdepends on","To":"David Daney ","Cc":"linux-gpio@vger.kernel.org, David Daney ,\n\tLinus Walleij ,\n\tLinux Kernel Mailing List ","Content-Type":"text/plain; charset=\"UTF-8\"","Sender":"linux-gpio-owner@vger.kernel.org","Precedence":"bulk","List-ID":"","X-Mailing-List":"linux-gpio@vger.kernel.org"}},{"id":1764280,"web_url":"http://patchwork.ozlabs.org/comment/1764280/","msgid":"<8cfd9a26-39d9-6c1d-3414-e0f5f3123ced@caviumnetworks.com>","list_archive_url":null,"date":"2017-09-06T17:36:06","subject":"Re: [PATCH] gpio: thunderx: select IRQ_DOMAIN_HIERARCHY instead of\n\tdepends on","submitter":{"id":721,"url":"http://patchwork.ozlabs.org/api/people/721/","name":"David Daney","email":"ddaney@caviumnetworks.com"},"content":"On 09/05/2017 09:20 PM, Masahiro Yamada wrote:\n> Hi David,\n> \n> \n> 2017-09-06 11:09 GMT+09:00 David Daney :\n>> On 09/05/2017 06:40 PM, Masahiro Yamada wrote:\n>>>\n>>> IRQ_DOMAIN_HIERARCHY is not user-configurable, but supposed to be\n>>> selected by drivers that need IRQ domain hierarchy support.\n>>>\n>>> GPIO_THUNDERX is the only user of \"depends on IRQ_DOMAIN_HIERARCHY\".\n>>> This means, we can not enable GPIO_THUNDERX unless other drivers\n>>> select IRQ_DOMAIN_HIERARCHY elsewhere. This is odd. Flip the logic.\n>>>\n>>> Signed-off-by: Masahiro Yamada \n>>\n>>\n>> IRQ_DOMAIN_HIERARCHY is set as a result of ARCH_THUNDER (this SoC hardware),\n>> so it actually works as-is.\n> \n> \n> Right, ARCH_THUNDER does not select it directly,\n> but does it indirectly. (this is not so clear...)\n> \n> ARCH_THUNDER -> ARM64 -> ARM_GIC -> IRQ_DOMAIN_HIERARCHY\n> \n> \n> \n>> That said, this looks like a reasonable\n>> improvement, and will allow the COMPILE_TEST to enable it, so...\n>>\n>> Acked-by: David Daney \n> \n> \n> BTW, I could not understand your intention of\n> (64BIT && COMPILE_TEST)\n> \n\nThe driver uses readq()/writeq(), which are not available in some 32BIT \nkernels. So to ensure that it can build without error we depend on \n64BIT as a proxy for the availability of readq()/writeq()\n\n\nDavid\n--\nTo unsubscribe from this list: send the line \"unsubscribe linux-gpio\" in\nthe body of a message to majordomo@vger.kernel.org\nMore majordomo info at http://vger.kernel.org/majordomo-info.html","headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@bilbo.ozlabs.org","Authentication-Results":["ozlabs.org;\n\tspf=none (mailfrom) smtp.mailfrom=vger.kernel.org\n\t(client-ip=209.132.180.67; helo=vger.kernel.org;\n\tenvelope-from=linux-gpio-owner@vger.kernel.org;\n\treceiver=)","ozlabs.org;\n\tdkim=fail reason=\"signature verification failed\" (1024-bit key;\n\tunprotected) header.d=CAVIUMNETWORKS.onmicrosoft.com\n\theader.i=@CAVIUMNETWORKS.onmicrosoft.com header.b=\"k685knkm\"; \n\tdkim-atps=neutral","spf=none (sender IP is )\n\tsmtp.mailfrom=David.Daney@cavium.com; "],"Received":["from vger.kernel.org (vger.kernel.org [209.132.180.67])\n\tby ozlabs.org (Postfix) with ESMTP id 3xnW332KfNz9t2d\n\tfor ;\n\tThu, 7 Sep 2017 03:36:15 +1000 (AEST)","(majordomo@vger.kernel.org) by vger.kernel.org via listexpand\n\tid S1752021AbdIFRgO (ORCPT );\n\tWed, 6 Sep 2017 13:36:14 -0400","from mail-sn1nam01on0067.outbound.protection.outlook.com\n\t([104.47.32.67]:16297\n\t\"EHLO NAM01-SN1-obe.outbound.protection.outlook.com\"\n\trhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP\n\tid S1751994AbdIFRgM (ORCPT );\n\tWed, 6 Sep 2017 13:36:12 -0400","from ddl.caveonetworks.com (50.233.148.156) by\n\tBN6PR07MB3490.namprd07.prod.outlook.com (10.161.153.29) with\n\tMicrosoft SMTP Server (version=TLS1_2,\n\tcipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384_P256) id\n\t15.20.13.10; Wed, 6 Sep 2017 17:36:08 +0000"],"DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/relaxed;\n\td=CAVIUMNETWORKS.onmicrosoft.com; s=selector1-cavium-com;\n\th=From:Date:Subject:Message-ID:Content-Type:MIME-Version;\n\tbh=tcLWf8fOVcIKPlR14TLwRxVBE6r5HQHjBvgvOAxZguI=;\n\tb=k685knkm5c2LWwiCsxyeLYFSheI1ANgsNLJ6gpkie27W2W/otbjcFPzNUxCnFw6YFacjjnqVYcIprBPdK2XJ1K339TvEHp4H/p+FCmBMctShTQV34sjJeOreceHi/fZ84KKOPIhAbi8fZsDwVq0y9CRrDXz2YO5HbyYPqdFVcpA=","Subject":"Re: [PATCH] gpio: thunderx: select IRQ_DOMAIN_HIERARCHY instead of\n\tdepends on","To":"Masahiro Yamada ,\n\tDavid Daney ","Cc":"linux-gpio@vger.kernel.org, David Daney ,\n\tLinus Walleij ,\n\tLinux Kernel Mailing List ","References":"<1504662052-12478-1-git-send-email-yamada.masahiro@socionext.com>\n\t<32679e9c-7ad7-a632-4842-6e8e8b820d26@caviumnetworks.com>\n\t","From":"David Daney ","Message-ID":"<8cfd9a26-39d9-6c1d-3414-e0f5f3123ced@caviumnetworks.com>","Date":"Wed, 6 Sep 2017 10:36:06 -0700","User-Agent":"Mozilla/5.0 (X11; Linux x86_64; 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SFP:1101; SCL:1; SRVR:BN6PR07MB3490;\n\tH:ddl.caveonetworks.com; FPR:; SPF:None; PTR:InfoNoRecords;\n\tMX:1; A:1; LANG:en; ","Received-SPF":"None (protection.outlook.com: cavium.com does not designate\n\tpermitted sender hosts)","SpamDiagnosticOutput":"1:99","SpamDiagnosticMetadata":"NSPM","X-OriginatorOrg":"caviumnetworks.com","X-MS-Exchange-CrossTenant-OriginalArrivalTime":"06 Sep 2017 17:36:08.7106\n\t(UTC)","X-MS-Exchange-CrossTenant-FromEntityHeader":"Hosted","X-MS-Exchange-CrossTenant-Id":"711e4ccf-2e9b-4bcf-a551-4094005b6194","X-MS-Exchange-Transport-CrossTenantHeadersStamped":"BN6PR07MB3490","Sender":"linux-gpio-owner@vger.kernel.org","Precedence":"bulk","List-ID":"","X-Mailing-List":"linux-gpio@vger.kernel.org"}},{"id":1764447,"web_url":"http://patchwork.ozlabs.org/comment/1764447/","msgid":"","list_archive_url":null,"date":"2017-09-07T01:03:51","subject":"Re: [PATCH] gpio: thunderx: select IRQ_DOMAIN_HIERARCHY instead of\n\tdepends on","submitter":{"id":65882,"url":"http://patchwork.ozlabs.org/api/people/65882/","name":"Masahiro Yamada","email":"yamada.masahiro@socionext.com"},"content":"Hi David,\n\n\n2017-09-07 2:36 GMT+09:00 David Daney :\n> On 09/05/2017 09:20 PM, Masahiro Yamada wrote:\n>>\n>> Hi David,\n>>\n>>\n>> 2017-09-06 11:09 GMT+09:00 David Daney :\n>>>\n>>> On 09/05/2017 06:40 PM, Masahiro Yamada wrote:\n>>>>\n>>>>\n>>>> IRQ_DOMAIN_HIERARCHY is not user-configurable, but supposed to be\n>>>> selected by drivers that need IRQ domain hierarchy support.\n>>>>\n>>>> GPIO_THUNDERX is the only user of \"depends on IRQ_DOMAIN_HIERARCHY\".\n>>>> This means, we can not enable GPIO_THUNDERX unless other drivers\n>>>> select IRQ_DOMAIN_HIERARCHY elsewhere. This is odd. Flip the logic.\n>>>>\n>>>> Signed-off-by: Masahiro Yamada \n>>>\n>>>\n>>>\n>>> IRQ_DOMAIN_HIERARCHY is set as a result of ARCH_THUNDER (this SoC\n>>> hardware),\n>>> so it actually works as-is.\n>>\n>>\n>>\n>> Right, ARCH_THUNDER does not select it directly,\n>> but does it indirectly. (this is not so clear...)\n>>\n>> ARCH_THUNDER -> ARM64 -> ARM_GIC -> IRQ_DOMAIN_HIERARCHY\n>>\n>>\n>>\n>>> That said, this looks like a reasonable\n>>> improvement, and will allow the COMPILE_TEST to enable it, so...\n>>>\n>>> Acked-by: David Daney \n>>\n>>\n>>\n>> BTW, I could not understand your intention of\n>> (64BIT && COMPILE_TEST)\n>>\n>\n> The driver uses readq()/writeq(), which are not available in some 32BIT\n> kernels. So to ensure that it can build without error we depend on 64BIT as\n> a proxy for the availability of readq()/writeq()\n>\n>\n\n\nIMHO, drivers code should not depend on CPU architecture too much.\n\n\nDoes the following make sense for your driver?\n\n\n- split {read,write}q into two transactions of {read,write}l\n\nor\n\n- include or\n \n (choose a suitable one for your driver)","headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@bilbo.ozlabs.org","Authentication-Results":["ozlabs.org;\n\tspf=none (mailfrom) smtp.mailfrom=vger.kernel.org\n\t(client-ip=209.132.180.67; helo=vger.kernel.org;\n\tenvelope-from=linux-gpio-owner@vger.kernel.org;\n\treceiver=)","ozlabs.org;\n\tdkim=fail reason=\"signature verification failed\" (2048-bit key;\n\tunprotected) header.d=nifty.com header.i=@nifty.com\n\theader.b=\"0L7heOzG\"; dkim-atps=neutral"],"Received":["from vger.kernel.org (vger.kernel.org [209.132.180.67])\n\tby ozlabs.org (Postfix) with ESMTP id 3xnj0c1w1qz9sCZ\n\tfor ;\n\tThu, 7 Sep 2017 11:04:48 +1000 (AEST)","(majordomo@vger.kernel.org) by vger.kernel.org via listexpand\n\tid S1751267AbdIGBEp (ORCPT );\n\tWed, 6 Sep 2017 21:04:45 -0400","from conssluserg-05.nifty.com ([210.131.2.90]:25355 \"EHLO\n\tconssluserg-05.nifty.com\" rhost-flags-OK-OK-OK-OK) by vger.kernel.org\n\twith ESMTP id S1750944AbdIGBEo (ORCPT\n\t); Wed, 6 Sep 2017 21:04:44 -0400","from mail-yw0-f170.google.com (mail-yw0-f170.google.com\n\t[209.85.161.170]) (authenticated)\n\tby conssluserg-05.nifty.com with ESMTP id v8714WP2031270;\n\tThu, 7 Sep 2017 10:04:32 +0900","by mail-yw0-f170.google.com with SMTP id q80so1749374ywg.2;\n\tWed, 06 Sep 2017 18:04:32 -0700 (PDT)","by 10.37.164.225 with HTTP; Wed, 6 Sep 2017 18:03:51 -0700 (PDT)"],"DKIM-Filter":"OpenDKIM Filter v2.10.3 conssluserg-05.nifty.com v8714WP2031270","DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/relaxed; d=nifty.com;\n\ts=dec2015msa; t=1504746273;\n\tbh=8+T4aDJZg2UHoIQlDaMuFYKa4Eav55guqmsb3imQoZ8=;\n\th=In-Reply-To:References:From:Date:Subject:To:Cc:From;\n\tb=0L7heOzGxRTMw6i45ek3YjMnmOli64yS/G/YJi7sw0egqJbm2lNm3hU6Uu7WjspLD\n\tEB7010AvXpmqfVGRBd1mzRQWdQSYbpNBkbNIScL1b7oevhCZ9TmhFlZpXPNOOo1Ig1\n\tR5lSGzlhzjjhQkCzQLmT+SIW2xf9EJ+y90w3QSrbadg9YHH8Sl80AJZBUTDksAzE/T\n\tK7BPgkRJD3VxyNU/6Iy7Q47epalGO4c2HLvFpQrSsD3B+CqMflKfQErd7EcoXp0d7D\n\tXU697o/EtuFhter2athE34tp/7hIhlBvtFalNbfXmroDPo51FP1tvgcGTkYx5nJqpz\n\tvQVLhtMJzTNag==","X-Nifty-SrcIP":"[209.85.161.170]","X-Gm-Message-State":"AHPjjUjrbbRgpIMAX/sZsey9AdASTbir53a6oB0TkGkKNsU/Us9yQJPo\n\tUeLuvCSe2wu5gsCnLWCTNOq93q5GtA==","X-Google-Smtp-Source":"ADKCNb5rEtsZCHRV9lT0sijzMgUGLPgVJdabwQmEY76eqeerjbGh+2Vqiie9pmqBEgCd+rFaD151u2o/SVBZQ1cTdCE=","X-Received":"by 10.37.41.133 with SMTP id p127mr797460ybp.331.1504746271702; \n\tWed, 06 Sep 2017 18:04:31 -0700 (PDT)","MIME-Version":"1.0","In-Reply-To":"<8cfd9a26-39d9-6c1d-3414-e0f5f3123ced@caviumnetworks.com>","References":"<1504662052-12478-1-git-send-email-yamada.masahiro@socionext.com>\n\t<32679e9c-7ad7-a632-4842-6e8e8b820d26@caviumnetworks.com>\n\t\n\t<8cfd9a26-39d9-6c1d-3414-e0f5f3123ced@caviumnetworks.com>","From":"Masahiro Yamada ","Date":"Thu, 7 Sep 2017 10:03:51 +0900","X-Gmail-Original-Message-ID":"","Message-ID":"","Subject":"Re: [PATCH] gpio: thunderx: select IRQ_DOMAIN_HIERARCHY instead of\n\tdepends on","To":"David Daney ","Cc":"linux-gpio@vger.kernel.org, David Daney ,\n\tLinus Walleij ,\n\tLinux Kernel Mailing List ","Content-Type":"text/plain; charset=\"UTF-8\"","Sender":"linux-gpio-owner@vger.kernel.org","Precedence":"bulk","List-ID":"","X-Mailing-List":"linux-gpio@vger.kernel.org"}},{"id":1764456,"web_url":"http://patchwork.ozlabs.org/comment/1764456/","msgid":"","list_archive_url":null,"date":"2017-09-07T01:18:45","subject":"Re: [PATCH] gpio: thunderx: select IRQ_DOMAIN_HIERARCHY instead of\n\tdepends on","submitter":{"id":721,"url":"http://patchwork.ozlabs.org/api/people/721/","name":"David Daney","email":"ddaney@caviumnetworks.com"},"content":"On 09/06/2017 06:03 PM, Masahiro Yamada wrote:\n> Hi David,\n> \n> \n> 2017-09-07 2:36 GMT+09:00 David Daney :\n>> On 09/05/2017 09:20 PM, Masahiro Yamada wrote:\n>>>\n>>> Hi David,\n>>>\n>>>\n>>> 2017-09-06 11:09 GMT+09:00 David Daney :\n>>>>\n>>>> On 09/05/2017 06:40 PM, Masahiro Yamada wrote:\n>>>>>\n>>>>>\n>>>>> IRQ_DOMAIN_HIERARCHY is not user-configurable, but supposed to be\n>>>>> selected by drivers that need IRQ domain hierarchy support.\n>>>>>\n>>>>> GPIO_THUNDERX is the only user of \"depends on IRQ_DOMAIN_HIERARCHY\".\n>>>>> This means, we can not enable GPIO_THUNDERX unless other drivers\n>>>>> select IRQ_DOMAIN_HIERARCHY elsewhere. This is odd. Flip the logic.\n>>>>>\n>>>>> Signed-off-by: Masahiro Yamada \n>>>>\n>>>>\n>>>>\n>>>> IRQ_DOMAIN_HIERARCHY is set as a result of ARCH_THUNDER (this SoC\n>>>> hardware),\n>>>> so it actually works as-is.\n>>>\n>>>\n>>>\n>>> Right, ARCH_THUNDER does not select it directly,\n>>> but does it indirectly. (this is not so clear...)\n>>>\n>>> ARCH_THUNDER -> ARM64 -> ARM_GIC -> IRQ_DOMAIN_HIERARCHY\n>>>\n>>>\n>>>\n>>>> That said, this looks like a reasonable\n>>>> improvement, and will allow the COMPILE_TEST to enable it, so...\n>>>>\n>>>> Acked-by: David Daney \n>>>\n>>>\n>>>\n>>> BTW, I could not understand your intention of\n>>> (64BIT && COMPILE_TEST)\n>>>\n>>\n>> The driver uses readq()/writeq(), which are not available in some 32BIT\n>> kernels. So to ensure that it can build without error we depend on 64BIT as\n>> a proxy for the availability of readq()/writeq()\n>>\n>>\n> \n> \n> IMHO, drivers code should not depend on CPU architecture too much.\n> \n\nThe CPU and the device are in a SoC (both on the same silicon die), \nthere is no way they can be used apart from one another.\n\n\n> \n> Does the following make sense for your driver?\n> \n> \n> - split {read,write}q into two transactions of {read,write}l\n\nNo. The registers must be accessed with 64-bit operations.\n\nWe are not going to screw around complicating the driver so that it can \nwork on hypothetical non-existent systems.\n\nIf we ever put this GPIO hardware unit in a system with a 32-bit CPU, we \nwill at that time, and only then, modify it to work with 32-bit operations.\n\n> \n> or\n> \n> - include or\n> \n> (choose a suitable one for your driver)\n> \n> \n> \n> \n\n--\nTo unsubscribe from this list: send the line \"unsubscribe linux-gpio\" in\nthe body of a message to majordomo@vger.kernel.org\nMore majordomo info at http://vger.kernel.org/majordomo-info.html","headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@bilbo.ozlabs.org","Authentication-Results":["ozlabs.org;\n\tspf=none (mailfrom) smtp.mailfrom=vger.kernel.org\n\t(client-ip=209.132.180.67; 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Thu, 7 Sep 2017 01:18:47 +0000"],"DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/relaxed;\n\td=CAVIUMNETWORKS.onmicrosoft.com; s=selector1-cavium-com;\n\th=From:Date:Subject:Message-ID:Content-Type:MIME-Version;\n\tbh=DFawmWa/lEmyUHdrHPx9QhzRyIetIa/+dUYXmEzwE98=;\n\tb=JnUY2ck9i6PGQ1qfKYAnXY1uPdFkn1p2xIVzRH6f+ZMbrH6haB0hzWfZw4VRyeloGW471QrgLyTu+BwoetrjsMvysa6Tuc7b2LOlasLHcvA91YvQsxJEmMUKdDAEjZ6g/bU0roesFQDKb43IW2BOHo5gDkjByLCyglcw/x0s560=","Subject":"Re: [PATCH] gpio: thunderx: select IRQ_DOMAIN_HIERARCHY instead of\n\tdepends on","To":"Masahiro Yamada ","Cc":"linux-gpio@vger.kernel.org, David Daney ,\n\tLinus Walleij ,\n\tLinux Kernel Mailing List ","References":"<1504662052-12478-1-git-send-email-yamada.masahiro@socionext.com>\n\t<32679e9c-7ad7-a632-4842-6e8e8b820d26@caviumnetworks.com>\n\t\n\t<8cfd9a26-39d9-6c1d-3414-e0f5f3123ced@caviumnetworks.com>\n\t","From":"David Daney ","Message-ID":"","Date":"Wed, 6 Sep 2017 18:18:45 -0700","User-Agent":"Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101\n\tThunderbird/52.2.1","MIME-Version":"1.0","In-Reply-To":"","Content-Type":"text/plain; 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SFP:1101; SCL:1; SRVR:DM5PR07MB3498;\n\tH:ddl.caveonetworks.com; FPR:; SPF:None; PTR:InfoNoRecords;\n\tA:1; MX:1; LANG:en; ","Received-SPF":"None (protection.outlook.com: cavium.com does not designate\n\tpermitted sender hosts)","SpamDiagnosticOutput":"1:99","SpamDiagnosticMetadata":"NSPM","X-OriginatorOrg":"caviumnetworks.com","X-MS-Exchange-CrossTenant-OriginalArrivalTime":"07 Sep 2017 01:18:47.4939\n\t(UTC)","X-MS-Exchange-CrossTenant-FromEntityHeader":"Hosted","X-MS-Exchange-CrossTenant-Id":"711e4ccf-2e9b-4bcf-a551-4094005b6194","X-MS-Exchange-Transport-CrossTenantHeadersStamped":"DM5PR07MB3498","Sender":"linux-gpio-owner@vger.kernel.org","Precedence":"bulk","List-ID":"","X-Mailing-List":"linux-gpio@vger.kernel.org"}},{"id":1766803,"web_url":"http://patchwork.ozlabs.org/comment/1766803/","msgid":"","list_archive_url":null,"date":"2017-09-12T09:24:08","subject":"Re: [PATCH] gpio: thunderx: select IRQ_DOMAIN_HIERARCHY instead of\n\tdepends on","submitter":{"id":7055,"url":"http://patchwork.ozlabs.org/api/people/7055/","name":"Linus Walleij","email":"linus.walleij@linaro.org"},"content":"On Wed, Sep 6, 2017 at 3:40 AM, Masahiro Yamada\n wrote:\n\n> IRQ_DOMAIN_HIERARCHY is not user-configurable, but supposed to be\n> selected by drivers that need IRQ domain hierarchy support.\n>\n> GPIO_THUNDERX is the only user of \"depends on IRQ_DOMAIN_HIERARCHY\".\n> This means, we can not enable GPIO_THUNDERX unless other drivers\n> select IRQ_DOMAIN_HIERARCHY elsewhere. This is odd. Flip the logic.\n>\n> Signed-off-by: Masahiro Yamada \n\nPatch applied with David's ACK.\n\nYours,\nLinus Walleij\n--\nTo unsubscribe from this list: send the line \"unsubscribe linux-gpio\" in\nthe body of a message to majordomo@vger.kernel.org\nMore majordomo info at http://vger.kernel.org/majordomo-info.html","headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@bilbo.ozlabs.org","Authentication-Results":["ozlabs.org;\n\tspf=none (mailfrom) smtp.mailfrom=vger.kernel.org\n\t(client-ip=209.132.180.67; helo=vger.kernel.org;\n\tenvelope-from=linux-gpio-owner@vger.kernel.org;\n\treceiver=)","ozlabs.org;\n\tdkim=fail reason=\"signature verification failed\" (1024-bit key;\n\tunprotected) header.d=linaro.org header.i=@linaro.org\n\theader.b=\"kHZXYeM6\"; dkim-atps=neutral"],"Received":["from vger.kernel.org (vger.kernel.org [209.132.180.67])\n\tby ozlabs.org (Postfix) with ESMTP id 3xrzrZ2ZJgz9s83\n\tfor ;\n\tTue, 12 Sep 2017 19:24:14 +1000 (AEST)","(majordomo@vger.kernel.org) by vger.kernel.org via listexpand\n\tid S1751496AbdILJYM (ORCPT );\n\tTue, 12 Sep 2017 05:24:12 -0400","from mail-io0-f170.google.com ([209.85.223.170]:37114 \"EHLO\n\tmail-io0-f170.google.com\" rhost-flags-OK-OK-OK-OK) by vger.kernel.org\n\twith ESMTP id S1751214AbdILJYJ (ORCPT\n\t); Tue, 12 Sep 2017 05:24:09 -0400","by mail-io0-f170.google.com with SMTP id j141so42922768ioj.4\n\tfor ;\n\tTue, 12 Sep 2017 02:24:09 -0700 (PDT)","by 10.79.164.78 with HTTP; Tue, 12 Sep 2017 02:24:08 -0700 (PDT)"],"DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google;\n\th=mime-version:in-reply-to:references:from:date:message-id:subject:to\n\t:cc; bh=Fc8P/9ZG4jtUoGcYBsj0G2MF8c6TQNd/Y3ApzAC6Dz4=;\n\tb=kHZXYeM6PtMHUMPfJ8RsYplwA3ie806TVipJv9XDQhCdiDQYg22GtLzU1uNcLDh3Vz\n\t+RT/eL6l6WMagQwegx7OUZ57c3rMmhj/8wKpxtA9P5kAYtHkge615tSAgh5lXQjjE6QJ\n\tL+JnODG//ZuMHiuTNE+uOVZzQgC4teJDb8ndU=","X-Google-DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/relaxed;\n\td=1e100.net; s=20161025;\n\th=x-gm-message-state:mime-version:in-reply-to:references:from:date\n\t:message-id:subject:to:cc;\n\tbh=Fc8P/9ZG4jtUoGcYBsj0G2MF8c6TQNd/Y3ApzAC6Dz4=;\n\tb=anEwMLr6hEcghmQW7dU0maylKisRBqy+hV5qTvI4o7LroupGHA42POhhZkzngyqPG4\n\tPP5jGWOBJLjIoVRhXWvMU/XEOcIWQuVY0i+jpq/x3KTunB1MvskSmqzyQxlQmofyz/Oj\n\tgFC0rhUoSJn5fOXYcg7nAxOX2xbfvgwJtzpYJkPfiBokvfVgkA6hF0wf2s1C4xiBc5y3\n\tjdNPv4CV9RTHoT+pBN3l16fYfXyJG1D+cwQFKWKWSr90IN4i08PNRSbIDjNHRujIcdVB\n\t//Oi7MWa9tdixF4h3YQGBXk9VWL86zFdEW7dfVt1tz0v9yCQK+XPAPjpfQRbZeTGGMQh\n\tFizA==","X-Gm-Message-State":"AHPjjUjd+9hl5yKt+bz1wpDuXrmQv6vLdWx9DfdeXuG561DktNv63gDe\n\tAVximAsjmtWKmSSMEUmrFulyLIQa3iYr","X-Google-Smtp-Source":"AOwi7QD9OPEotitNROI8GWCRHwuLQ651kGsN0pVHVyzZrlzgh8npEimqRms6ADBGJJld2oesiLt2mgHqYUUI3zBZ+V4=","X-Received":"by 10.107.197.198 with SMTP id v189mr527157iof.94.1505208249354; \n\tTue, 12 Sep 2017 02:24:09 -0700 (PDT)","MIME-Version":"1.0","In-Reply-To":"<1504662052-12478-1-git-send-email-yamada.masahiro@socionext.com>","References":"<1504662052-12478-1-git-send-email-yamada.masahiro@socionext.com>","From":"Linus Walleij ","Date":"Tue, 12 Sep 2017 11:24:08 +0200","Message-ID":"","Subject":"Re: [PATCH] gpio: thunderx: select IRQ_DOMAIN_HIERARCHY instead of\n\tdepends on","To":"Masahiro Yamada ","Cc":"\"linux-gpio@vger.kernel.org\" ,\n\tDavid Daney ,\n\t\"linux-kernel@vger.kernel.org\" ","Content-Type":"text/plain; charset=\"UTF-8\"","Sender":"linux-gpio-owner@vger.kernel.org","Precedence":"bulk","List-ID":"","X-Mailing-List":"linux-gpio@vger.kernel.org"}}]