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 4BAC9C88E4C for ; Fri, 11 Sep 2026 11:30:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=NM523NqIuF/Y63PMtMsDp4hyEbdjJ2oMDXXqGkH0PeY=; b=aWCHK7JDZ775E0prQB1KGcxqvk n4mQr3o25hE1PZ109UT4bjPmTIC3/sYvMCwSKf6F0V0wsb0RUyyDlnqcNwGYV/qTHfDouCpRvNUYC 9QhO/EggSE+QlrMAiO1k0LynhCmzW8tNJjdlAuxnlXgLktl+pNYY4F5eTRGUtbX8+svG3SxzJxLt8 GsuYoOV3zcdOXbVS2o6K1oUJrED3YRQZgzwZ5tBP+FdY6EqmyX4kqghoKMtvt4KzkBU2gYRHiuxXO nayVq8b/JftO6Uz/C0vz5597Owx1ZP6WTLmtJb/OOHguXEMLCwgk9UkRW2/BI00f6R33UNt30/2H7 7MGnwHAg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1x4zSC-0000000GW79-2Qun; Fri, 11 Sep 2026 11:30:00 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1x4zS2-0000000GVvv-1k7T for linux-arm-kernel@lists.infradead.org; Fri, 11 Sep 2026 11:29:54 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id ED1E928AC; Fri, 11 Sep 2026 04:29:45 -0700 (PDT) Received: from e142021.arm.com (unknown [10.57.6.75]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 590A63F59E; Fri, 11 Sep 2026 04:29:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=arm.com; s=foss; t=1789126189; bh=fkL8LlJoJEuOsNOgQpjEIgSES2ACtwI8J5F9ENE5/mc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=QPQLI48Tv7aVl/KMQIa5nGZKb/28bsV2o1bsBlil+2taoJkUgnD5hK2zVTJhgDj0l tJYTRlah3TzzHS57vL87g+mEPAQ+TgxPYON0yvQfaFf78OQoJ+H+LknwfIS+cNsnHd LItyNAANxoOq3xsjDQZkcO4k01clPwlx47gW5wsw= From: Andre Przywara To: Lorenzo Pieralisi , Hanjun Guo , Sudeep Holla , Catalin Marinas , Will Deacon , "Rafael J . Wysocki" , Len Brown , James Morse , Ben Horgan , Reinette Chatre , Fenghua Yu Cc: Jonathan Cameron , Srivathsa L Rao , Ganapatrao Kulkarni , Trilok Soni , Srinivas Ramana , Niyas Sait , Lee Trager , Ritwick Sharma , Gavin Shan , linux-acpi@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [RFC PATCH v10 14/14] acpi: arm64: use MPAM-Fb offset field from ACPI table Date: Fri, 11 Sep 2026 13:28:35 +0200 Message-ID: <20260911112835.714162-15-andre.przywara@arm.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260911112835.714162-1-andre.przywara@arm.com> References: <20260911112835.714162-1-andre.przywara@arm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260911_042950_512501_98739EAE X-CRM114-Status: GOOD ( 13.18 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The newly introduced mpam_fb_offset field in the MSC node ACPI table holds the difference between the system-wide MSC ID, as held in the "Identifier" field, and the ID to be used on the MPAM-Fb protocol level. Subtract that value from the MSC ID and store that in the mpam_fb_msc_id property, so that the MPAM-Fb code can correctly address the MSCs. Previously this field was marked as "must-be-zero", so there would be no change when using older tables. Signed-off-by: Andre Przywara --- drivers/acpi/arm64/mpam.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/acpi/arm64/mpam.c b/drivers/acpi/arm64/mpam.c index 8c87b4a663439..ee9be310c2184 100644 --- a/drivers/acpi/arm64/mpam.c +++ b/drivers/acpi/arm64/mpam.c @@ -257,7 +257,8 @@ static struct platform_device * __init acpi_mpam_parse_msc(struct acpi_mpam_msc_ props[next_prop++] = PROPERTY_ENTRY_U32("pcc-channel", tbl_msc->base_address); props[next_prop++] = PROPERTY_ENTRY_U32("mpam-fb-msc-id", - tbl_msc->identifier); + tbl_msc->identifier - + tbl_msc->mpam_fb_offset); } acpi_mpam_parse_irqs(pdev, tbl_msc, res, &next_res); -- 2.43.0