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 C647EC433EF for ; Thu, 30 Jun 2022 13:35:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230305AbiF3Nf3 (ORCPT ); Thu, 30 Jun 2022 09:35:29 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39506 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230203AbiF3Nf2 (ORCPT ); Thu, 30 Jun 2022 09:35:28 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A15362871E for ; Thu, 30 Jun 2022 06:35:27 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 40A9FB82AC5 for ; Thu, 30 Jun 2022 13:35:26 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id AA121C34115; Thu, 30 Jun 2022 13:35:23 +0000 (UTC) Date: Thu, 30 Jun 2022 14:35:19 +0100 From: Catalin Marinas To: Sudeep Holla Cc: linux-acpi@vger.kernel.org, linux-arm-kernel@lists.infradead.org, "Rafael J . Wysocki" , Lorenzo Pieralisi , Will Deacon Subject: Re: [PATCH 3/3] arm64: Add architecture specific ACPI FFH Opregion callbacks Message-ID: References: <20220616090106.2154906-1-sudeep.holla@arm.com> <20220616090106.2154906-4-sudeep.holla@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220616090106.2154906-4-sudeep.holla@arm.com> Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org On Thu, Jun 16, 2022 at 10:01:06AM +0100, Sudeep Holla wrote: > FFH Operation Region space can be used to trigger SMC or HVC calls, > using the Arm SMC Calling Convention (SMCCC). The choice of conduit > (SMC or HVC) is based on what the kernel choose based on PSCI as with > any other users of SMCCC within the kernel. > > Function identifiers only the SMCCC SiP Service, OEM Service and FF-A > specific call range. > > Offset can be either 0(32 bit calling convention) or 1(64 bit calling > convention). The length must be set with the range applicable based > on the value of the offset. > > Cc: Catalin Marinas > Cc: Will Deacon > Signed-off-by: Sudeep Holla Acked-by: Catalin Marinas