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 5CD6FC021B6 for ; Sat, 22 Feb 2025 16:18:42 +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:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=U3P1RrTToS4ky7JjGlw89KvviaLkSQRP9NmPnXZZJRY=; b=KR9myWFESWtf8F 4j3d+YFY1//jow1jVqKwCjXj+4uoZvK6wq7E2JYaCHhDuQxzAco4yxRaaQsSUAHVeg0tYH8ZEiORY Ja3+0imONglLX9lypL7dEz4gdB5tbEHMdc2XkANG1iQfrvbOlSuouYpYLKZ+h6RZLitPmoPpuntnz D30064uSAC0wsm+9NhT6RS254P8O5R5slVjha6WnuJCSEl8olXRJoiXvsKoDdnZy1snvPrsS9aKDf hI4lrpqhrXGY+rCXfMxLLenVu/jHto7VaLoF3/I0YgsCE0wHr45uLQ7T7mY8A6Ak24IgDi1pF6RNg tJi54zAEG6DtkTBxfuww==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tlsD3-00000008LK9-2pOG; Sat, 22 Feb 2025 16:18:33 +0000 Received: from mail-pl1-x62d.google.com ([2607:f8b0:4864:20::62d]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tls3Y-00000008KHf-0hYj for linux-rockchip@lists.infradead.org; Sat, 22 Feb 2025 16:08:45 +0000 Received: by mail-pl1-x62d.google.com with SMTP id d9443c01a7336-220d28c215eso47837885ad.1 for ; Sat, 22 Feb 2025 08:08:43 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1740240523; x=1740845323; darn=lists.infradead.org; h=in-reply-to:content-transfer-encoding:content-disposition :mime-version:references:message-id:subject:cc:to:from:date:from:to :cc:subject:date:message-id:reply-to; bh=m6nKOO+ujfvI6kP5NRUFljlra8jwiaSae/QIEC4vlMk=; b=C2Qp7VIcAr8g6HG9TTQMBA7Hw6FQsMwLCy95L2QW86l6rD8YZnHByreBvdMgJfoJcd TnEjQ15HbaMCHnJLuM9JCzeL2I65rbJDGWJdv3ZTEXCCYq13MBDY0orWwg/BBhMcsy36 b39ut1XRqNXD+P60dUr6jAaWS+RjdJ/dkI2Bnn0pWBZtswW5Z0yTbm8WayfHpz5VxnI0 VL/dl77AMjiGlCLdUI5YOvmM1fnEolrmP7CKQLeMsyOT0TIJRC7+Ps7xB11xjtSNqHEx DXbCNfwXKkJFeZEhZO7Uipu4bzTnCObwKyAMvg0RGMke1CWkSS/OO00OZt3WpQzx2sYc uWUA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1740240523; x=1740845323; h=in-reply-to:content-transfer-encoding:content-disposition :mime-version:references:message-id:subject:cc:to:from:date :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=m6nKOO+ujfvI6kP5NRUFljlra8jwiaSae/QIEC4vlMk=; b=Ezd182qkKD6/nBYkbf1G9WjPG13l8zJ4DrZ7EEHUs/U12On+4eIEflcDC6EJCvO0lK Dh4vjV4viytMl9H3nTaEU//CVz5MZygpYxiUgYFdLowuI6ST1l2vV2jSL3pR5uJNRr7b R0BeSiM4Es0JDGcMpcZc4j42/30GIgpCxwuUNyg1yUcZTUXGg7vUTCt1MyYBY4JK+4Ij 9sNLs/ac36ihEjPAhdN28bgVn5MjCtAfDSDazAXBUoxAqOr0dsCzIX9IwSLTCikLK24h n1oKy7tAX8TuS3kk5gK5aGZl2U6qHN1i1bi/g6ku3KiPKGd0b7dJXXGAcWVC9tBypgmI FWtw== X-Forwarded-Encrypted: i=1; AJvYcCVOjZCnGwVlIGEqj3Km4uLKShdnGeBmvPgEEyFLINYRRGgXj9VzzTVWrf0GaxANRqrep0HpxsrAq1aQJEYKKw==@lists.infradead.org X-Gm-Message-State: AOJu0YwxlLgRsPsOPUBLAecDGcwRbriCpyyk/lhBGk2rS1I2Au1MCj30 8YnFe/mUwK52j81jedsabDLNplfpjKjmS25VeW23ZoB/14ZOpClkP4H8tFQy8g== X-Gm-Gg: ASbGncvZQSOvFjeGHOyjrL6pOBeRMLh1ECWJeDCcQ14l0SVgAZdvV7WSm+b4U0RN/DV VHdztBNVsSIbh5/ebTL038IvF/Z7Jp98V7q+VDqms3ykNsib8WojivM54eZJJVVbT79cldBA3Il G6uUKJDOteKdJ8Q/gCL3IIHX1D/ZwXM89SrDoZnSTomuzVPMoGPOBcmFOb4H56jNf7OQRQwulPR Sqpz1NmoFQBjmsfgfxXDgZCrq6wMrYfNAEMienroT2zU1aLZItcCgjo0Wv9Z+37O8tcGMyl9cx7 1S8Ox5h0V++odwUl0GRozR1dnb1by+LaDIDRUQ== X-Google-Smtp-Source: AGHT+IHN0WlvX+IkHk8JMgEJNSbtnqx/TMfpzaynwWxX8s++M0aKqed9Cxvgkv+KhaqAUxrXEQr99g== X-Received: by 2002:a17:902:e80b:b0:215:44fe:163e with SMTP id d9443c01a7336-2219ff34b52mr134423285ad.1.1740240522821; Sat, 22 Feb 2025 08:08:42 -0800 (PST) Received: from thinkpad ([120.60.135.149]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-2fceb02d7dasm3319824a91.5.2025.02.22.08.08.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 22 Feb 2025 08:08:42 -0800 (PST) Date: Sat, 22 Feb 2025 21:38:37 +0530 From: Manivannan Sadhasivam To: Niklas Cassel Cc: Lorenzo Pieralisi , Krzysztof =?utf-8?Q?Wilczy=C5=84ski?= , Rob Herring , Bjorn Helgaas , Heiko Stuebner , Damien Le Moal , Shawn Lin , linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org Subject: Re: [PATCH 2/2] PCI: dw-rockchip: hide broken ATS capability Message-ID: <20250222160837.mropn3laiyv3acaa@thinkpad> References: <20250221202646.395252-3-cassel@kernel.org> <20250221202646.395252-4-cassel@kernel.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20250221202646.395252-4-cassel@kernel.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250222_080844_197131_CC3B15D1 X-CRM114-Status: GOOD ( 31.43 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org T24gRnJpLCBGZWIgMjEsIDIwMjUgYXQgMDk6MjY6NDhQTSArMDEwMCwgTmlrbGFzIENhc3NlbCB3 cm90ZToKPiBXaGVuIHJ1bm5pbmcgdGhlIHJrMzU4OCBpbiBlbmRwb2ludCBtb2RlLCB3aXRoIGFu IEludGVsIGhvc3Qgd2l0aCBJT01NVQo+IGVuYWJsZWQsIHRoZSBob3N0IHNpZGUgcHJpbnRzOgo+ IERNQVI6IFZULWQgZGV0ZWN0ZWQgSW52YWxpZGF0aW9uIFRpbWUtb3V0IEVycm9yOiBTSUQgMAo+ IAo+IFdoZW4gcnVubmluZyB0aGUgcmszNTg4IGluIGVuZHBvaW50IG1vZGUsIHdpdGggYW4gQU1E IGhvc3Qgd2l0aCBJT01NVQo+IGVuYWJsZWQsIHRoZSBob3N0IHNpZGUgcHJpbnRzOgo+IGlvbW11 IGl2aGQwOiBBTUQtVmk6IEV2ZW50IGxvZ2dlZCBbSU9UTEJfSU5WX1RJTUVPVVQgZGV2aWNlPTYz OjAwLjAgYWRkcmVzcz0weDQyYjViMDFhMF0KPiAKPiBVc3VhbGx5LCB0byBoYW5kbGUgdGhlc2Ug aXNzdWVzLCB3ZSBhZGQgYSBxdWlyayBmb3IgdGhlIFBDSSB2ZW5kb3IgYW5kCj4gZGV2aWNlIElE IGluIGRyaXZlcnMvcGNpL3F1aXJrcy5jIHdpdGggcXVpcmtfbm9fYXRzKCkuIFRoYXQgaXMgYmVj YXVzZQo+IHdlIGNhbm5vdCB1c3VhbGx5IG1vZGlmeSB0aGUgY2FwYWJpbGl0aWVzIG9uIHRoZSBF UCBzaWRlLgo+IAo+IEluIHRoaXMgY2FzZSwgd2UgY2FuIG1vZGlmeSB0aGUgY2FwYWJpbHRpZXMg b24gdGhlIEVQIHNpZGUuIFRodXMsIGhpZGUgdGhlCj4gYnJva2VuIEFUUyBjYXBhYmlsaXR5IG9u IHJrMzU4OCB3aGVuIHJ1bm5pbmcgaW4gRVAgbW9kZS4gVGhhdCB3YXksCj4gd2UgZG9uJ3QgbmVl ZCBhbnkgcXVpcmsgb24gdGhlIGhvc3Qgc2lkZSwgYW5kIHdlIHNlZSBubyBlcnJvcnMgb24gdGhl IGhvc3QKPiBzaWRlLCBhbmQgd2UgY2FuIHJ1biBwY2lfZW5kcG9pbnRfdGVzdCBzdWNjZXNzZnVs bHksIHdpdGggdGhlIElPTU1VCj4gZW5hYmxlZCBvbiB0aGUgaG9zdCBzaWRlLgo+IAo+IFNpZ25l ZC1vZmYtYnk6IE5pa2xhcyBDYXNzZWwgPGNhc3NlbEBrZXJuZWwub3JnPgo+IC0tLQo+ICBkcml2 ZXJzL3BjaS9jb250cm9sbGVyL2R3Yy9wY2llLWR3LXJvY2tjaGlwLmMgfCA0NiArKysrKysrKysr KysrKysrKysrCj4gIDEgZmlsZSBjaGFuZ2VkLCA0NiBpbnNlcnRpb25zKCspCj4gCj4gZGlmZiAt LWdpdCBhL2RyaXZlcnMvcGNpL2NvbnRyb2xsZXIvZHdjL3BjaWUtZHctcm9ja2NoaXAuYyBiL2Ry aXZlcnMvcGNpL2NvbnRyb2xsZXIvZHdjL3BjaWUtZHctcm9ja2NoaXAuYwo+IGluZGV4IDgzNmVh MTBlYWZiYi4uMmJlMDA1YzFhMTYxIDEwMDY0NAo+IC0tLSBhL2RyaXZlcnMvcGNpL2NvbnRyb2xs ZXIvZHdjL3BjaWUtZHctcm9ja2NoaXAuYwo+ICsrKyBiL2RyaXZlcnMvcGNpL2NvbnRyb2xsZXIv ZHdjL3BjaWUtZHctcm9ja2NoaXAuYwo+IEBAIC0yNDIsNiArMjQyLDUxIEBAIHN0YXRpYyBjb25z dCBzdHJ1Y3QgZHdfcGNpZV9ob3N0X29wcyByb2NrY2hpcF9wY2llX2hvc3Rfb3BzID0gewo+ICAJ LmluaXQgPSByb2NrY2hpcF9wY2llX2hvc3RfaW5pdCwKPiAgfTsKPiAgCj4gKy8qCj4gKyAqIEFU UyBkb2VzIG5vdCB3b3JrIG9uIHJrMzU4OCB3aGVuIHJ1bm5pbmcgaW4gRVAgbW9kZS4KPiArICog QWZ0ZXIgYSBob3N0IGhhcyBlbmFibGVkIEFUUyBvbiB0aGUgRVAgc2lkZSwgaXQgd2lsbCBzZW5k IGFuIElPVExCCj4gKyAqIGludmFsaWRhdGlvbiByZXF1ZXN0IHRvIHRoZSBFUCBzaWRlLiBUaGUg cmszNTg4IHdpbGwgbmV2ZXIgc2VuZCBhIGNvbXBsZXRpb24KPiArICogYmFjayBhbmQgZXZlbnR1 YWxseSB0aGUgaG9zdCB3aWxsIHByaW50IGFuIElPVExCX0lOVl9USU1FT1VUIGVycm9yLCBhbmQg dGhlCj4gKyAqIEVQIHdpbGwgbm90IGJlIG9wZXJhdGlvbmFsLiBJZiB3ZSBoaWRlIHRoZSBBVFMg Y2FwLCB0aGluZ3Mgd29yayBhcyBleHBlY3RlZC4KPiArICovCj4gK3N0YXRpYyB2b2lkIHJvY2tj aGlwX3BjaWVfZXBfaGlkZV9icm9rZW5fYXRzX2NhcF9yazM1ODgoc3RydWN0IGR3X3BjaWVfZXAg KmVwKQo+ICt7Cj4gKwlzdHJ1Y3QgZHdfcGNpZSAqcGNpID0gdG9fZHdfcGNpZV9mcm9tX2VwKGVw KTsKPiArCXN0cnVjdCBkZXZpY2UgKmRldiA9IHBjaS0+ZGV2Owo+ICsJdW5zaWduZWQgaW50IHNw Y2llX2NhcF9vZmZzZXQsIG5leHRfY2FwX29mZnNldDsKPiArCXUzMiBzcGNpZV9jYXBfaGVhZGVy LCBuZXh0X2NhcF9oZWFkZXI7Cj4gKwo+ICsJLyogb25seSBoaWRlIHRoZSBBVFMgY2FwIGZvciBy azM1ODggcnVubmluZyBpbiBFUCBtb2RlICovCj4gKwlpZiAoIW9mX2RldmljZV9pc19jb21wYXRp YmxlKGRldi0+b2Zfbm9kZSwgInJvY2tjaGlwLHJrMzU4OC1wY2llLWVwIikpCj4gKwkJcmV0dXJu OwoKQ29tcGF0aWJsZSBjaGVja3MgYWx3YXlzIHRlbmQgdG8gZXh0ZW5kLiBTbyBwbGVhc2UgdXNl IGEgYm9vbGVhbiBmbGFnIHRvCmlkZW50aWZ5IHRoZSBxdWlyayBpbiAnc3RydWN0IHJvY2tjaGlw X3BjaWVfb2ZfZGF0YScgYW5kIHNldCBpdCBpbgoncm9ja2NoaXBfcGNpZV9lcF9vZl9kYXRhX3Jr MzU4OCcuIFRoaXMgd2F5LCBvdGhlciBTb0NzIGNvdWxkIGFsc28gcmV1c2UgdGhlCmZsYWcgaWYg cmVxdWlyZWQuCgo+ICsKPiArCXNwY2llX2NhcF9vZmZzZXQgPSBkd19wY2llX2ZpbmRfZXh0X2Nh cGFiaWxpdHkocGNpLCBQQ0lfRVhUX0NBUF9JRF9TRUNQQ0kpOwo+ICsJaWYgKCFzcGNpZV9jYXBf b2Zmc2V0KQo+ICsJCXJldHVybjsKPiArCj4gKwlzcGNpZV9jYXBfaGVhZGVyID0gZHdfcGNpZV9y ZWFkbF9kYmkocGNpLCBzcGNpZV9jYXBfb2Zmc2V0KTsKPiArCW5leHRfY2FwX29mZnNldCA9IFBD SV9FWFRfQ0FQX05FWFQoc3BjaWVfY2FwX2hlYWRlcik7Cj4gKwo+ICsJbmV4dF9jYXBfaGVhZGVy ID0gZHdfcGNpZV9yZWFkbF9kYmkocGNpLCBuZXh0X2NhcF9vZmZzZXQpOwo+ICsJaWYgKFBDSV9F WFRfQ0FQX0lEKG5leHRfY2FwX2hlYWRlcikgIT0gUENJX0VYVF9DQVBfSURfQVRTKQo+ICsJCXJl dHVybjsKPiArCj4gKwkvKiBjbGVhciBuZXh0IHB0ciAqLwo+ICsJc3BjaWVfY2FwX2hlYWRlciAm PSB+R0VOTUFTSygzMSwgMjApOwo+ICsKPiArCS8qIHNldCBuZXh0IHB0ciB0byBuZXh0IHB0ciBv ZiBBVFNfQ0FQICovCj4gKwlzcGNpZV9jYXBfaGVhZGVyIHw9IG5leHRfY2FwX2hlYWRlciAmIEdF Tk1BU0soMzEsIDIwKTsKPiArCj4gKwlkd19wY2llX2RiaV9yb193cl9lbihwY2kpOwo+ICsJZHdf cGNpZV93cml0ZWxfZGJpKHBjaSwgc3BjaWVfY2FwX29mZnNldCwgc3BjaWVfY2FwX2hlYWRlcik7 Cj4gKwlkd19wY2llX2RiaV9yb193cl9kaXMocGNpKTsKClRoaXMgY29kZSBpcyBtb3N0bHkgZ2Vu ZXJpYy4gU28gcGxlYXNlIG1vdmUgaXQgdG8gcGNpZS1kZXNpZ253YXJlLWVwLmMuIFRoZQpmdW5j dGlvbiBzaG91bGQganVzdCBhY2NlcHQgdHdvIENBUCBJRHMgKHByZXYgYW5kIHRhcmdldCkgYW5k IGhpZGUgdGhlIHRhcmdldApjYXBhYmlsaXR5LiBMaWtlLAoKCWR3X3BjaWVfaGlkZV9leHRfY2Fw YWJpbGl0eShwY2ksIFBDSV9FWFRfQ0FQX0lEX1NFQ1BDSSwKCQkJCSAgICBQQ0lfRVhUX0NBUF9J RF9BVFMpOwoKSXRzIHRvbyBiYWQgdGhhdCB3ZSBjYW5ub3QgdHJhdmVyc2UgYmFjayBmcm9tIHRo ZSB0YXJnZXQgY2FwYWJpbGl0eS4gV2UgY291bGQKb3BlbiBjb2RlIGR3X3BjaWVfZXBfZmluZF9l eHRfY2FwYWJpbGl0eSgpIHRvIGtlZXAgdHJhY2sgb2YgdGhlIHByZXZfY2FwX29mZnNldAp0aG91 Z2guCgotIE1hbmkKCi0tIArgrq7grqPgrr/grrXgrqPgr43grqPgrqngr40g4K6a4K6k4K6+4K6a 4K6/4K614K6u4K+NCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fXwpMaW51eC1yb2NrY2hpcCBtYWlsaW5nIGxpc3QKTGludXgtcm9ja2NoaXBAbGlzdHMuaW5m cmFkZWFkLm9yZwpodHRwOi8vbGlzdHMuaW5mcmFkZWFkLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2xp bnV4LXJvY2tjaGlwCg==