From patchwork Wed Jan 26 05:24:04 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dan Williams X-Patchwork-Id: 12724607 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 7E0F8C28CF5 for ; Wed, 26 Jan 2022 05:24:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232596AbiAZFYG (ORCPT ); Wed, 26 Jan 2022 00:24:06 -0500 Received: from mga11.intel.com ([192.55.52.93]:26029 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232517AbiAZFYG (ORCPT ); Wed, 26 Jan 2022 00:24:06 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1643174646; x=1674710646; h=subject:from:to:cc:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=jikdn5aUxL1fQVhM2z1NpcZFt/8C4df5jyvo0XW+XDA=; b=Bf3Y1+FmdHwgisrDOEs55fkbkBvauK7KfXec0KBZFl/EwY6SUNiSQvqb UG9O0HwqL2LhrRAC4AZioqdiE5HuGF6RLop7+Qk+5I63hJR6AueTj/br6 B4NljwH/dfPKa5LFgDSbXNOp97NIn23nh42b99iO64tpQ4DDuRNrNDJ+R 6rz5E9uJYkXRDubXKZYjCI1JnlSf5De4FhEMrV2e+J7aNey3Z0yKFOPUX zmbdkhyA4FZCdWzAJJJ5ZJmt6Gb8xdv7PLbo5wdpIMk1W5D+xSXdSVA3M Mw2U7Isj9hk2p5WAf8Omg4k4lKBIANfwLRNGsFPo3Tu/+R+hcVFrYh8Rd w==; X-IronPort-AV: E=McAfee;i="6200,9189,10238"; a="244082433" X-IronPort-AV: E=Sophos;i="5.88,316,1635231600"; d="scan'208";a="244082433" Received: from orsmga001.jf.intel.com ([10.7.209.18]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Jan 2022 21:24:04 -0800 X-IronPort-AV: E=Sophos;i="5.88,316,1635231600"; d="scan'208";a="563305708" Received: from dwillia2-desk3.jf.intel.com (HELO dwillia2-desk3.amr.corp.intel.com) ([10.54.39.25]) by orsmga001-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Jan 2022 21:24:04 -0800 Subject: [PATCH 1/2] cxl/core/port: Fix / relax decoder target enumeration From: Dan Williams To: linux-cxl@vger.kernel.org Cc: linux-pci@vger.kernel.org, nvdimm@lists.linux.dev, ben.widawsky@intel.com Date: Tue, 25 Jan 2022 21:24:04 -0800 Message-ID: <164317464406.3438644.6609329492458460242.stgit@dwillia2-desk3.amr.corp.intel.com> In-Reply-To: <164317463887.3438644.4087819721493502301.stgit@dwillia2-desk3.amr.corp.intel.com> References: <164317463887.3438644.4087819721493502301.stgit@dwillia2-desk3.amr.corp.intel.com> User-Agent: StGit/0.18-3-g996c MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-cxl@vger.kernel.org If the decoder is not presently active the target_list may not be accurate. Perform a best effort mapping and assume that it will be fixed up when the decoder is enabled. Signed-off-by: Dan Williams Reviewed-by: Jonathan Cameron --- drivers/cxl/acpi.c | 2 +- drivers/cxl/core/port.c | 5 ++++- 2 files changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/cxl/acpi.c b/drivers/cxl/acpi.c index df6691d0a6d0..f64d98bfcb3b 100644 --- a/drivers/cxl/acpi.c +++ b/drivers/cxl/acpi.c @@ -15,7 +15,7 @@ static unsigned long cfmws_to_decoder_flags(int restrictions) { - unsigned long flags = 0; + unsigned long flags = CXL_DECODER_F_ENABLE; if (restrictions & ACPI_CEDT_CFMWS_RESTRICT_TYPE2) flags |= CXL_DECODER_F_TYPE2; diff --git a/drivers/cxl/core/port.c b/drivers/cxl/core/port.c index 224a4853a33e..e75e0d4fb894 100644 --- a/drivers/cxl/core/port.c +++ b/drivers/cxl/core/port.c @@ -1263,8 +1263,11 @@ int cxl_decoder_add_locked(struct cxl_decoder *cxld, int *target_map) port = to_cxl_port(cxld->dev.parent); if (!is_endpoint_decoder(dev)) { rc = decoder_populate_targets(cxld, port, target_map); - if (rc) + if (rc && (cxld->flags & CXL_DECODER_F_ENABLE)) { + dev_err(&port->dev, + "Failed to populate active decoder targets\n"); return rc; + } } rc = dev_set_name(dev, "decoder%d.%d", port->id, cxld->id);