Received: by 2002:a05:6358:d09b:b0:dc:cd0c:909e with SMTP id jc27csp15428217rwb; Mon, 28 Nov 2022 11:26:28 -0800 (PST) X-Google-Smtp-Source: AA0mqf7lA+kbQxuPnLU/gjcVlfEUF9dYE5NrTMWUNLEh4bgGKvWBlYcFFuDdkzUAsBlNSeSIaA9M X-Received: by 2002:a65:4c41:0:b0:477:1126:cc49 with SMTP id l1-20020a654c41000000b004771126cc49mr30306782pgr.367.1669663587848; Mon, 28 Nov 2022 11:26:27 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1669663587; cv=none; d=google.com; s=arc-20160816; b=rQb06rudb/89HQpcuJAmNSOBd7supLtxrmBz94ch9Fm+5idDss+UUtO4A+275nGnA3 fRKhcp4YduTNO1W8GNY/Z35yxVyUyohSFiqo0vNtj7R9doPb2g2AYrnB7TdUVEfi9oRy kesXTbex1vn3nMA/oQ5Fe1dC69D00kcMoiETlKuahB7VpFT0bDpVcz9RpnCtr5NNvjZD E+trqfKKxNsuzjQojpC8LWg6gyaHpktPuSiaQuwE47FwIfPT2lSWWSRmQIDPYf4zd8M5 SG6S+FovUfSyczNFjSUWbRqjkMLG9rczjbmSs0/F9h6122KwG3pRvA7Le29zm+ow2Uat CfmQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :message-id:date:references:in-reply-to:subject:cc:to:dkim-signature :dkim-signature:from; bh=ta/RP6h3ZaWg5mNsQCu1kt13zKaS/JYROoUqA2qAiTU=; b=a5+iThYskJNL6JWO7zmzOZ4qjjz7oX0I9YHIBubTxc6MgwnwnbR5JqNQdVVrD7OW7w aF5VHHbnn50h5jFYBTCvVTdAL8idUqlZ1YZUPdn0KCs6vx14RqYtB5R9LYB/lzHgqvIM v1sRf2nuAThhL0Vy5fY4OeuYD3YkGHFdgDIWPY4GhvDNQPNjySmK+OiLee73vBvLuemO BAzoyuBlxuLcOk3r8MQXJPviGp3Iyh7KzNurJ5/ahGOpBAW2uOW+UJOMl+fC0f4qWhf4 wZLbeHnggW5OgQ9fv+eMz5FT55FxciaMf2BUefQp4Zw3HWUNdrZfIbY2Yhqi2oS8QRK3 1uUw== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linutronix.de header.s=2020 header.b=Vl9C2Jah; dkim=neutral (no key) header.i=@linutronix.de header.b="9n/njDfL"; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=linutronix.de Return-Path: Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id h69-20020a636c48000000b0043941e5532dsi12678209pgc.391.2022.11.28.11.26.17; Mon, 28 Nov 2022 11:26:27 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@linutronix.de header.s=2020 header.b=Vl9C2Jah; dkim=neutral (no key) header.i=@linutronix.de header.b="9n/njDfL"; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=linutronix.de Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233242AbiK1TOu (ORCPT + 84 others); Mon, 28 Nov 2022 14:14:50 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43004 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231638AbiK1TOs (ORCPT ); Mon, 28 Nov 2022 14:14:48 -0500 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8C7301B9E0; Mon, 28 Nov 2022 11:14:47 -0800 (PST) From: Thomas Gleixner DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1669662885; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=ta/RP6h3ZaWg5mNsQCu1kt13zKaS/JYROoUqA2qAiTU=; b=Vl9C2JahBuLSdvMRNKyUTr91l5opM88ITEm9IkubxFvDIGqjetPyVT+aGQ+Ve6qKEuuNWq 76Iyb/3zQgfZ12CO6YLqtQwVwMF56qgD9nKb5om3PJ6mFt6y5IXzK7vLRtpBUWV4nAdS8h lhTCdCzwZLwwup85O9oFoeWZkhYMCdv6IJbd5KEySHkl/5TIOxwq6rOtfx6gTZGja32jIk WSqCZz7CwA/+aiM2XkzQ0oNQUS2jF+EFsmNBhIMkK1L8W+cDv/X13XHn/oBKF0WbE5XSX/ I3wx0ZHyYmu3JXzMsFi9YlkalmrFa0Ao+NFhrlJi7u344Aq/rOAbRPqkZHJm/w== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1669662885; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=ta/RP6h3ZaWg5mNsQCu1kt13zKaS/JYROoUqA2qAiTU=; b=9n/njDfLUHnCyW6DyCkGsB/rBwd5AOWoeBbGHeJyK8QgA8UUnHfWnWoCYSkNxAO/TQFKoj 6BlWMn/Eu0RzbqCA== To: Frank Li , lpieralisi@kernel.org Cc: Frank.Li@nxp.com, aisheng.dong@nxp.com, bhelgaas@google.com, devicetree@vger.kernel.org, festevam@gmail.com, imx@lists.linux.dev, jdmason@kudzu.us, kernel@pengutronix.de, kishon@ti.com, krzysztof.kozlowski+dt@linaro.org, kw@linux.com, linux-arm-kernel@lists.infradead.org, linux-imx@nxp.com, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, lorenzo.pieralisi@arm.com, lznuaa@gmail.com, manivannan.sadhasivam@linaro.org, maz@kernel.org, ntb@lists.linux.dev, peng.fan@nxp.com, robh+dt@kernel.org, s.hauer@pengutronix.de, shawnguo@kernel.org Subject: Re: [PATCH v13 2/2] PCI: endpoint: pci-epf-vntb: using platform MSI as doorbell In-Reply-To: <20221124055036.1630573-3-Frank.Li@nxp.com> References: <20221124055036.1630573-1-Frank.Li@nxp.com> <20221124055036.1630573-3-Frank.Li@nxp.com> Date: Mon, 28 Nov 2022 20:14:44 +0100 Message-ID: <87wn7evql7.ffs@tglx> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: base64 X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED,SPF_HELO_NONE, SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org T24gVGh1LCBOb3YgMjQgMjAyMiBhdCAwMDo1MCwgRnJhbmsgTGkgd3JvdGU6DQo+IOKUjOKUgOKU gOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUkCAgIOKUjOKUgOKUgOKUgOKUgOKUgOKU gOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKU gOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUkCAgIOKUjOKUgOKUgOKUgOKUgOKUgOKU gOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUkA0KPiDilIIgICAgICAgICAgICDilIIg ICDilIIgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgIOKUgiAgIOKUgiAgICAgICAg ICAgICAgICDilIINCj4g4pSCICAgICAgICAgICAg4pSCICAg4pSCIFBDSSBFbmRwb2ludCAgICAg ICAgICAgICAgICAgICAgICDilIIgICDilIIgUENJIEhvc3QgICAgICAg4pSCDQo+IOKUgiAgICAg ICAgICAgIOKUgiAgIOKUgiAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAg4pSCICAg 4pSCICAgICAgICAgICAgICAgIOKUgg0KPiDilIIgICAgICAgICAgICDilILil4TilIDilIDilKQg MS5wbGF0Zm9ybV9tc2lfZG9tYWluX2FsbG9jX2lycXMoKeKUgiAgIOKUgiAgICAgICAgICAgICAg ICDilIINCj4g4pSCICAgICAgICAgICAg4pSCICAg4pSCICAgICAgICAgICAgICAgICAgICAgICAg ICAgICAgICAgICDilIIgICDilIIgICAgICAgICAgICAgICAg4pSCDQo+IOKUgiBNU0kgICAgICAg IOKUnOKUgOKUgOKWuuKUgiAyLndyaXRlX21zaV9tc2coKSAgICAgICAgICAgICAgICAg4pSc4pSA 4pSA4pa64pSc4pSAQkFSPG4+ICAgICAgICAg4pSCDQo+IOKUgiBDb250cm9sbGVyIOKUgiAgIOKU giAgIHVwZGF0ZSBkb29yYmVsbCByZWdpc3RlciBhZGRyZXNz4pSCICAg4pSCICAgICAgICAgICAg ICAgIOKUgg0KPiDilIIgICAgICAgICAgICDilIIgICDilIIgICBmb3IgQkFSICAgICAgICAgICAg ICAgICAgICAgICAgIOKUgiAgIOKUgiAgICAgICAgICAgICAgICDilIINCj4g4pSCICAgICAgICAg ICAg4pSCICAg4pSCICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICDilIIgICDilIIg My4gV3JpdGUgQkFSPG4+4pSCDQo+IOKUgiAgICAgICAgICAgIOKUguKXhOKUgOKUgOKUvOKUgOKU gOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKU gOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUvOKUgOKUgOKUgOKU pCAgICAgICAgICAgICAgICDilIINCj4g4pSCICAgICAgICAgICAg4pSCICAg4pSCICAgICAgICAg ICAgICAgICAgICAgICAgICAgICAgICAgICDilIIgICDilIIgICAgICAgICAgICAgICAg4pSCDQo+ IOKUgiAgICAgICAgICAgIOKUnOKUgOKUgOKWuuKUgiA0LklycSBIYW5kbGUgICAgICAgICAgICAg ICAgICAgICAg4pSCICAg4pSCICAgICAgICAgICAgICAgIOKUgg0KPiDilIIgICAgICAgICAgICDi lIIgICDilIIgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgIOKUgiAgIOKUgiAgICAg ICAgICAgICAgICDilIINCj4g4pSCICAgICAgICAgICAg4pSCICAg4pSCICAgICAgICAgICAgICAg ICAgICAgICAgICAgICAgICAgICDilIIgICDilIIgICAgICAgICAgICAgICAg4pSCDQo+IOKUlOKU gOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUmCAgIOKUlOKUgOKUgOKUgOKUgOKU gOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKU gOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUmCAgIOKUlOKUgOKUgOKUgOKUgOKU gOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUgOKUmA0KPg0KPiBVc2luZyBwbGF0Zm9y bSBNU0kgaW50ZXJydXB0IGNvbnRyb2xsZXIgYXMgZW5kcG9pbnQoRVApJ3MgZG9vcmJlbGwuDQoN CkNhbiB5b3UgcGxlYXNlIGV4cGxhaW4gd2hhdCB0aGUgTVNJIGNvbnRyb2xsZXIgaXMgaW4gdGhp cyBwaWN0dXJlPyBNU0kNCmNvbnRyb2xsZXIgaXMgbm90IGEgdGVybSB3aGljaCBpcyBjb21tb24g aW4gdGhlIGludGVycnVwdCBoYW5kbGluZw0KbGFuZHNjYXBlIGRlc3BpdGUgdGhlIGZhY3QgdGhh dCBpdCdzIHByZXR0eSB3aWRlIHNwcmVhZCBpbiBkZXZpY2UgdHJlZQ0KYmluZGluZ3MgcHJlc3Vt YWJseSB0aHJvdWdoIGludGVuc2l2ZSBjb3B5ICYgcGFzdGEgY2FyZ28gY3VsdC4NCg0KPiBCYXNp YyB3b3JraW5nIGZvbGxvdyBhcw0KPiAxLiBFUCBmdW5jdGlvbiBkcml2ZXIgY2FsbCBwbGF0Zm9y bV9tc2lfZG9tYWluX2FsbG9jX2lycXMoKSBhbGxvYyBhDQo+IE1TSSBpcnEgZnJvbSBNU0kgY29u dHJvbGxlciB3aXRoIGNhbGwgYmFjayBmdW5jdGlvbiB3cml0ZV9tc2lfbXNnKCk7DQo+IDIuIHdy aXRlX21zZ19tc2cgd2lsbCBjb25maWcgQkFSIGFuZCBtYXAgdG8gYWRkcmVzcyBkZWZpbmVkIGlu IG1zaV9tc2c7DQo+IDMuIEhvc3Qgc2lkZSB0cmlnZ2VyIGFuIElSUSBhdCBFbmRwb2ludCBieSB3 cml0ZSB0byBCQVIgcmVnaW9uLg0KDQpZb3UncmUgZXhwbGFpbmluZyB3aGF0IHRoZSBjb2RlIGRv ZXMsIGJ1dCBmYWlsIHRvIGV4cGxhaW4gdGhlIHVuZGVybHlpbmcNCm1lY2hhbmlzbXMuDQoNClBs YXRmb3JtIE1TSSBpcyBkZWZpbml0ZWx5IHRoZSB3cm9uZyBtZWNoYW5pc20gaGVyZS4gV2h5Pw0K DQpUaGlzIGlzIGFib3V0IGEgUENJZSBlbmRwb2ludCwgd2hpY2ggaXMgdXN1YWxseSBoYW5kbGVk IGJ5IGEgUENJL01TSQ0KaW50ZXJydXB0IGRvbWFpbi4gT2J2aW91c2x5IHRoaXMgdXNhZ2UgZG9l cyBub3QgZml0IGludG8gdGhlIHdheSBob3cgdGhlDQoiZ2xvYmFsIiBQQ0kvTVNJIGRvbWFpbnMg d29yay4NCg0KVGhlcmUgaXMgdXBjb21pbmcgd29yayBhbmQgYXQgbGVhc3QgdGhlIGdlbmVyaWMg cGFydHMgc2hvdWxkIHNob3cgdXAgaW4NCjYuMiB3aGljaCBhZGRyZXNzZXMgZXhhY3RseSB0aGUg cHJvYmxlbSB5b3UgYXJlIHRyeWluZyB0byBzb2x2ZToNCg0KICAgaHR0cHM6Ly9sb3JlLmtlcm5l bC5vcmcvYWxsLzIwMjIxMTI0MjI1MzMxLjQ2NDQ4MDQ0M0BsaW51dHJvbml4LmRlDQogICBodHRw czovL2xvcmUua2VybmVsLm9yZy9hbGwvMjAyMjExMjQyMzA1MDUuMDczNDE4Njc3QGxpbnV0cm9u aXguZGUNCg0KcGx1cyB0aGUgcHJvdmUgdGhhdCB0aGUgcGxhdGZvcm0gTVNJIG1lc3MgY2FuIGJl IHJlcGxhY2VkIGJ5IHRoaXM6DQoNCiAgIGh0dHBzOi8vbG9yZS5rZXJuZWwub3JnL2FsbC8yMDIy MTEyMTEzNTY1My4yMDg2MTEyMzNAbGludXRyb25peC5kZQ0KDQpOVEIgaW4gaXQncyBjdXJyZW50 IGZvcm0gc2hvdWxkIG5ldmVyIGhhdmUgaGFwcGVuZWQsIGJ1dCB0aGF0J3Mgd2F0ZXINCmRvd24g dGhlIGJyaWRnZS4NCg0KV2hhdCB5b3UgcmVhbGx5IHdhbnQgaXM6DQoNCiAgMSkgQ29udmVydCB5 b3VyIHBsYXRmb3JtIHRvIHRoZSBuZXcgTVNJIHBhcmVudCBtb2RlbA0KDQogIDIpIFV0aWxpemUg UENJL0lNUyB3aGljaCBpcyBnaXZpbmcgeW91IGV4YWN0bHkgd2hhdCB5b3UgbmVlZCB3aXRoDQog ICAgIHByb3BlciBQQ0kgc2VtYW50aWNzDQoNClRoYW5rcywNCg0KICAgICAgICB0Z2x4DQo=