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 lists.gnu.org (lists.gnu.org [209.51.188.17]) (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 E0C79C02197 for ; Tue, 4 Feb 2025 07:35:40 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tfDSL-000253-Gp; Tue, 04 Feb 2025 02:34:49 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1tfDSH-000245-Lk; Tue, 04 Feb 2025 02:34:45 -0500 Received: from mail.ozlabs.org ([2404:9400:2221:ea00::3]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1tfDSE-0004lE-SC; Tue, 04 Feb 2025 02:34:44 -0500 Received: from mail.ozlabs.org (mail.ozlabs.org [IPv6:2404:9400:2221:ea00::3]) by gandalf.ozlabs.org (Postfix) with ESMTP id 4YnFVq6sXPz4wxm; Tue, 4 Feb 2025 18:34:27 +1100 (AEDT) Received: from authenticated.ozlabs.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (Client did not present a certificate) by mail.ozlabs.org (Postfix) with ESMTPSA id 4YnFVm2jmxz4wc2; Tue, 4 Feb 2025 18:34:24 +1100 (AEDT) Message-ID: Date: Tue, 4 Feb 2025 08:34:31 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v1 01/18] hw/intc/aspeed: Rename INTC to INTC0 To: Jamin Lin , Andrew Jeffery , Peter Maydell , Steven Lee , Troy Lee , Joel Stanley , "open list:ASPEED BMCs" , "open list:All patches CC here" Cc: Troy Lee , Yunlin Tang References: <20250121070424.2465942-1-jamin_lin@aspeedtech.com> <20250121070424.2465942-2-jamin_lin@aspeedtech.com> <2d9247ab-34dd-4dde-a9c0-c04c2d8a1a18@kaod.org> Content-Language: en-US, fr From: =?UTF-8?Q?C=C3=A9dric_Le_Goater?= Autocrypt: addr=clg@kaod.org; keydata= xsFNBFu8o3UBEADP+oJVJaWm5vzZa/iLgpBAuzxSmNYhURZH+guITvSySk30YWfLYGBWQgeo 8NzNXBY3cH7JX3/a0jzmhDc0U61qFxVgrPqs1PQOjp7yRSFuDAnjtRqNvWkvlnRWLFq4+U5t yzYe4SFMjFb6Oc0xkQmaK2flmiJNnnxPttYwKBPd98WfXMmjwAv7QfwW+OL3VlTPADgzkcqj 53bfZ4VblAQrq6Ctbtu7JuUGAxSIL3XqeQlAwwLTfFGrmpY7MroE7n9Rl+hy/kuIrb/TO8n0 ZxYXvvhT7OmRKvbYuc5Jze6o7op/bJHlufY+AquYQ4dPxjPPVUT/DLiUYJ3oVBWFYNbzfOrV RxEwNuRbycttMiZWxgflsQoHF06q/2l4ttS3zsV4TDZudMq0TbCH/uJFPFsbHUN91qwwaN/+ gy1j7o6aWMz+Ib3O9dK2M/j/O/Ube95mdCqN4N/uSnDlca3YDEWrV9jO1mUS/ndOkjxa34ia 70FjwiSQAsyIwqbRO3CGmiOJqDa9qNvd2TJgAaS2WCw/TlBALjVQ7AyoPEoBPj31K74Wc4GS Rm+FSch32ei61yFu6ACdZ12i5Edt+To+hkElzjt6db/UgRUeKfzlMB7PodK7o8NBD8outJGS tsL2GRX24QvvBuusJdMiLGpNz3uqyqwzC5w0Fd34E6G94806fwARAQABzSBDw6lkcmljIExl IEdvYXRlciA8Y2xnQGthb2Qub3JnPsLBeAQTAQIAIgUCW7yjdQIbAwYLCQgHAwIGFQgCCQoL BBYCAwECHgECF4AACgkQUaNDx8/77KGRSxAAuMJJMhJdj7acTcFtwof7CDSfoVX0owE2FJdd M43hNeTwPWlV5oLCj1BOQo0MVilIpSd9Qu5wqRD8KnN2Bv/rllKPqK2+i8CXymi9hsuzF56m 76wiPwbsX54jhv/VYY9Al7NBknh6iLYJiC/pgacRCHtSj/wofemSCM48s61s1OleSPSSvJE/ jYRa0jMXP98N5IEn8rEbkPua/yrm9ynHqi4dKEBCq/F7WDQ+FfUaFQb4ey47A/aSHstzpgsl TSDTJDD+Ms8y9x2X5EPKXnI3GRLaCKXVNNtrvbUd9LsKymK3WSbADaX7i0gvMFq7j51P/8yj neaUSKSkktHauJAtBNXHMghWm/xJXIVAW8xX5aEiSK7DNp5AM478rDXn9NZFUdLTAScVf7LZ VzMFKR0jAVG786b/O5vbxklsww+YXJGvCUvHuysEsz5EEzThTJ6AC5JM2iBn9/63PKiS3ptJ QAqzasT6KkZ9fKLdK3qtc6yPaSm22C5ROM3GS+yLy6iWBkJ/nEYh/L/du+TLw7YNbKejBr/J ml+V3qZLfuhDjW0GbeJVPzsENuxiNiBbyzlSnAvKlzda/sBDvxmvWhC+nMRQCf47mFr8Xx3w WtDSQavnz3zTa0XuEucpwfBuVdk4RlPzNPri6p2KTBhPEvRBdC9wNOdRBtsP9rAPjd52d73O wU0EW7yjdQEQALyDNNMw/08/fsyWEWjfqVhWpOOrX2h+z4q0lOHkjxi/FRIRLfXeZjFfNQNL SoL8j1y2rQOs1j1g+NV3K5hrZYYcMs0xhmrZKXAHjjDx7FW3sG3jcGjFW5Xk4olTrZwFsZVU cP8XZlArLmkAX3UyrrXEWPSBJCXxDIW1hzwpbV/nVbo/K9XBptT/wPd+RPiOTIIRptjypGY+ S23HYBDND3mtfTz/uY0Jytaio9GETj+fFis6TxFjjbZNUxKpwftu/4RimZ7qL+uM1rG1lLWc 9SPtFxRQ8uLvLOUFB1AqHixBcx7LIXSKZEFUCSLB2AE4wXQkJbApye48qnZ09zc929df5gU6 hjgqV9Gk1rIfHxvTsYltA1jWalySEScmr0iSYBZjw8Nbd7SxeomAxzBv2l1Fk8fPzR7M616d tb3Z3HLjyvwAwxtfGD7VnvINPbzyibbe9c6gLxYCr23c2Ry0UfFXh6UKD83d5ybqnXrEJ5n/ t1+TLGCYGzF2erVYGkQrReJe8Mld3iGVldB7JhuAU1+d88NS3aBpNF6TbGXqlXGF6Yua6n1c OY2Yb4lO/mDKgjXd3aviqlwVlodC8AwI0SdujWryzL5/AGEU2sIDQCHuv1QgzmKwhE58d475 KdVX/3Vt5I9kTXpvEpfW18TjlFkdHGESM/JxIqVsqvhAJkalABEBAAHCwV8EGAECAAkFAlu8 o3UCGwwACgkQUaNDx8/77KEhwg//WqVopd5k8hQb9VVdk6RQOCTfo6wHhEqgjbXQGlaxKHoX ywEQBi8eULbeMQf5l4+tHJWBxswQ93IHBQjKyKyNr4FXseUI5O20XVNYDJZUrhA4yn0e/Af0 IX25d94HXQ5sMTWr1qlSK6Zu79lbH3R57w9jhQm9emQEp785ui3A5U2Lqp6nWYWXz0eUZ0Ta d2zC71Gg9VazU9MXyWn749s0nXbVLcLS0yops302Gf3ZmtgfXTX/W+M25hiVRRKCH88yr6it +OMJBUndQVAA/fE9hYom6t/zqA248j0QAV/pLHH3hSirE1mv+7jpQnhMvatrwUpeXrOiEw1n HzWCqOJUZ4SY+HmGFW0YirWV2mYKoaGO2YBUwYF7O9TI3GEEgRMBIRT98fHa0NPwtlTktVIS l73LpgVscdW8yg9Gc82oe8FzU1uHjU8b10lUXOMHpqDDEV9//r4ZhkKZ9C4O+YZcTFu+mvAY 3GlqivBNkmYsHYSlFsbxc37E1HpTEaSWsGfAHQoPn9qrDJgsgcbBVc1gkUT6hnxShKPp4Pls ZVMNjvPAnr5TEBgHkk54HQRhhwcYv1T2QumQizDiU6iOrUzBThaMhZO3i927SG2DwWDVzZlt KrCMD1aMPvb3NU8FOYRhNmIFR3fcalYr+9gDuVKe8BVz4atMOoktmt0GWTOC8P4= In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2404:9400:2221:ea00::3; envelope-from=SRS0=Xvsd=U3=kaod.org=clg@ozlabs.org; helo=mail.ozlabs.org X-Spam_score_int: -40 X-Spam_score: -4.1 X-Spam_bar: ---- X-Spam_report: (-4.1 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.068, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On 2/4/25 07:50, Jamin Lin wrote: > Hi Cedric, Andrew > >> From: Andrew Jeffery >> Sent: Thursday, January 30, 2025 11:22 AM >> To: Cédric Le Goater ; Jamin Lin ; >> Peter Maydell ; Steven Lee >> ; Troy Lee ; Joel Stanley >> ; open list:ASPEED BMCs ; open >> list:All patches CC here >> Cc: Troy Lee ; Yunlin Tang >> >> Subject: Re: [PATCH v1 01/18] hw/intc/aspeed: Rename INTC to INTC0 >> >> On Wed, 2025-01-29 at 18:03 +0100, Cédric Le Goater wrote: >>> On 1/21/25 08:04, Jamin Lin wrote: >>>> The design of the INTC has significant changes in the AST2700 A1. >>>> In the >>>> AST2700 A0, there was one INTC controller, whereas in the AST2700 >>>> A1, there were two INTC controllers: INTC0 (CPU DIE) and INTC1 (I/O >>>> DIE). >>>> >>>> The previous INTC model only supported the AST2700 A0 and was >>>> implemented for the INTC0 (CPU DIE). To support the future INTC1 >>>> (I/O DIE) model, rename INTC to INTC0. >>> >>> >>> Why not introduce definitions with _INTC_IO_ and leave alone the >>> current instead ? Do we expect to have more than 2 INTC controllers ? >>> >> >> There was similar discussion on the devicetree bindings for the SCU a >> while back: >> >> https://lore.kernel.org/all/94efc2d4ff280a112b869124fc9d7e35ac031596.cam >> el@codeconstruct.com.au/ >> >> Ryan didn't like deviating from their internal documentation :( >> >> Andrew > > > Thanks for your suggestion. > > Last year, Troy and I implemented the SCU(CPU Die) and SCU_IO(IO Die) models to support the AST2700. > https://github.com/qemu/qemu/blob/master/hw/misc/aspeed_scu.c#L1073 > https://github.com/qemu/qemu/blob/master/hw/misc/aspeed_scu.c#L1080 > > I am fine with keeping the INTC(CPU Die) naming and creating a new INTC_IO(IO Die) model to support the AST2700 A1. Good. I think this will reduce the changes and clarify the models. > I have a question regarding the INTC_IO model implementation: > Can I define separate "intc_io_class_init" and "intcio_class_realize" functions for INTC_IO, similar to the SCU/SCU_IO models? Looks OK to me. > If yes, I think the patch “2 Support different memory region ops” can be omitted. > Additionally, I suggest that both INTC and INTC_IO have their own MMIO callback functions, as their register addresses are different. Do you mean the register offset in the MMIO aperture ? We try to avoid duplication unless the code becomes too complex. Please send a v2, splitting your series in 3 as requested in the other email. Thanks, C.