From nobody Thu Dec 18 13:18:47 2025 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 09E37CDB482 for ; Wed, 18 Oct 2023 16:09:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344760AbjJRQJE (ORCPT ); Wed, 18 Oct 2023 12:09:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41160 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232596AbjJRQIu (ORCPT ); Wed, 18 Oct 2023 12:08:50 -0400 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1478D119; Wed, 18 Oct 2023 09:08:48 -0700 (PDT) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 89FCCC433C7; Wed, 18 Oct 2023 16:08:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1697645327; bh=b8oAa/jdirMMTmQZgftTornsrNPKXWrb1kk+VtNeEYE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=kNUBrScUeqDw0NCA93kWHVjaqsImrYzD2M1Cu50OMLvVf8kZ4MRs/WEP0V3OLBG5W 7q5R1ORwALM3X7BwLzBsbQ/Oq69b3sg4/XYWPvS7nA9siMpjOxZV6BJ8spuKEd8Tvt jBmXjhjWE8KSzl/4nYCLmDpv8wzCfF8qvNoeD7W5eng/SnuXXl4x7rA+U6yn6znsLd YHYN2JstE588u/vI9EjkktNgPRktDz1wWyBSdGBZH8Hg3eawuFFaqEmVR3BYEKEWkI sGJjOcvFbKV72c9GWvTkpUlrrJS57s4giIwN/vwRgDZ8bn1PE4LqeY9UIDNoUnmNvZ acC+lU20cWI/w== From: Bjorn Helgaas To: Martin Mares Cc: =?UTF-8?q?Pali=20Roh=C3=A1r?= , Gustavo Pimentel , Mateusz Nowicki , linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, Bjorn Helgaas Subject: [PATCH 3/8] lspci: Decode PCIe DevCtl2 Emergency Power Reduction Request Date: Wed, 18 Oct 2023 11:08:31 -0500 Message-Id: <20231018160836.1361510-4-helgaas@kernel.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231018160836.1361510-1-helgaas@kernel.org> References: <20231018160836.1361510-1-helgaas@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Bjorn Helgaas Decode the PCIe DevCtl2 Emergency Power Reduction Request bit. Signed-off-by: Bjorn Helgaas --- lib/header.h | 1 + ls-caps.c | 4 +++- 2 files changed, 4 insertions(+), 1 deletion(-) diff --git a/lib/header.h b/lib/header.h index 5065465c33db..c3a720f716b7 100644 --- a/lib/header.h +++ b/lib/header.h @@ -906,6 +906,7 @@ #define PCI_EXP_DEVCTL2_IDO_REQ_EN 0x0100 /* Allow IDO for requests */ #define PCI_EXP_DEVCTL2_IDO_CMP_EN 0x0200 /* Allow IDO for completions */ #define PCI_EXP_DEVCTL2_LTR 0x0400 /* LTR enabled */ +#define PCI_EXP_DEVCTL2_EPR_REQ 0x0800 /* Emergency Power Reduction Reque= st */ #define PCI_EXP_DEVCTL2_10BIT_TAG_REQ 0x1000 /* 10 Bit Tag Requester enab= led */ #define PCI_EXP_DEVCTL2_OBFF(x) (((x) >> 13) & 3) /* OBFF enabled */ #define PCI_EXP_DEVSTA2 0x2a /* Device Status */ diff --git a/ls-caps.c b/ls-caps.c index 0c7bef976144..19c59536f948 100644 --- a/ls-caps.c +++ b/ls-caps.c @@ -1173,10 +1173,12 @@ static void cap_express_dev2(struct device *d, int = where, int type) printf(" EgressBlck%c", FLAG(w, PCI_EXP_DEVCTL2_ATOMICOP_EGRESS_BL= OCK)); printf("\n"); } - printf("\t\t\t IDOReq%c IDOCompl%c LTR%c 10BitTagReq%c OBFF %s\n", + printf("\t\t\t IDOReq%c IDOCompl%c LTR%c EmergencyPowerReductionReq%c\n", FLAG(w, PCI_EXP_DEVCTL2_IDO_REQ_EN), FLAG(w, PCI_EXP_DEVCTL2_IDO_CMP_EN), FLAG(w, PCI_EXP_DEVCTL2_LTR), + FLAG(w, PCI_EXP_DEVCTL2_EPR_REQ)); + printf("\t\t\t 10BitTagReq%c OBFF %s\n", FLAG(w, PCI_EXP_DEVCTL2_10BIT_TAG_REQ), cap_express_devctl2_obff(PCI_EXP_DEVCTL2_OBFF(w))); } --=20 2.34.1