From patchwork Wed Dec 9 00:24:18 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ben Widawsky X-Patchwork-Id: 340408 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B50DFC19437 for ; Wed, 9 Dec 2020 00:27:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 90F31239E5 for ; Wed, 9 Dec 2020 00:27:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731976AbgLIA0Z (ORCPT ); Tue, 8 Dec 2020 19:26:25 -0500 Received: from mga09.intel.com ([134.134.136.24]:16961 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731969AbgLIA0V (ORCPT ); Tue, 8 Dec 2020 19:26:21 -0500 IronPort-SDR: gAi/abx/k+gpBaztUF9VINZiQ/ZiePBof4Zbyxj75zj4QQWV4KsYjoZLov12XtTbHMG2G2MJsw JmFSW9DMRfmQ== X-IronPort-AV: E=McAfee;i="6000,8403,9829"; a="174142101" X-IronPort-AV: E=Sophos;i="5.78,404,1599548400"; d="scan'208";a="174142101" Received: from orsmga001.jf.intel.com ([10.7.209.18]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Dec 2020 16:24:31 -0800 IronPort-SDR: FutnC4UFEceEPiJyz7rzmsBr40hsiAP7b6MFuEIFDe62pQcwgXZkE7iQCkhdrYRPE9/3aYIkj4 4PHmVC5p31cA== X-IronPort-AV: E=Sophos;i="5.78,404,1599548400"; d="scan'208";a="407838534" Received: from mlubyani-mobl2.amr.corp.intel.com (HELO bwidawsk-mobl5.local) ([10.252.137.9]) by orsmga001-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Dec 2020 16:24:30 -0800 From: Ben Widawsky To: linux-cxl@vger.kernel.org Cc: Ben Widawsky , linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, linux-acpi@vger.kernel.org, Ira Weiny , Dan Williams , Vishal Verma , "Kelley, Sean V" , Rafael Wysocki , Bjorn Helgaas , Jonathan Cameron , Jon Masters , Chris Browy , Randy Dunlap , Christoph Hellwig Subject: [RFC PATCH 14/14] WIP/cxl/mem: Add get firmware for testing Date: Tue, 8 Dec 2020 16:24:18 -0800 Message-Id: <20201209002418.1976362-15-ben.widawsky@intel.com> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201209002418.1976362-1-ben.widawsky@intel.com> References: <20201209002418.1976362-1-ben.widawsky@intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org This also serves as an example how to add a new command Signed-off-by: Ben Widawsky --- drivers/cxl/mem.c | 22 ++++++++++++++++++++++ include/uapi/linux/cxl_mem.h | 3 ++- 2 files changed, 24 insertions(+), 1 deletion(-) diff --git a/drivers/cxl/mem.c b/drivers/cxl/mem.c index 6b2f8d3776b5..76aa1e6e4117 100644 --- a/drivers/cxl/mem.c +++ b/drivers/cxl/mem.c @@ -116,6 +116,7 @@ struct cxl_mem_command { static struct cxl_mem_command mem_commands[] = { CXL_CMD(INVALID, NONE, 0, 0, "Reserved", false, 0), CXL_CMD(RAW, TAINT, ~0, ~0, "Raw", true, 0), + CXL_CMD(GET_FW_INFO, NONE, 0, 0x50, "Get FW Info", false, 0x0200), }; static int cxl_mem_wait_for_doorbell(struct cxl_mem *cxlm) @@ -827,6 +828,23 @@ static int cxl_mem_add_memdev(struct cxl_mem *cxlm) return cxl_register(dev); } +static int cxl_mem_enable_commands(struct cxl_mem *cxlm) +{ + struct cxl_mem_command *c; + + /* + * For now we pretend Get FW info is supported. + * + * FIXME: Invoke GET LOG to get the Command Effect Logs (CEL). + */ + c = cxl_mem_find_command(0x200); + if (!c) + return -ENOENT; + + c->enable = true; + return 0; +} + /** * cxl_mem_identify() - Send the IDENTIFY command to the device. * @cxlm: The device to identify. @@ -936,6 +954,10 @@ static int cxl_mem_probe(struct pci_dev *pdev, const struct pci_device_id *id) if (rc) return rc; + rc = cxl_mem_enable_commands(cxlm); + if (rc) + return rc; + rc = cxl_mem_identify(cxlm); if (rc) return rc; diff --git a/include/uapi/linux/cxl_mem.h b/include/uapi/linux/cxl_mem.h index f2fbb0dcda06..3ac39acf8fa7 100644 --- a/include/uapi/linux/cxl_mem.h +++ b/include/uapi/linux/cxl_mem.h @@ -50,7 +50,8 @@ struct cxl_command_info { __u32 id; #define CXL_MEM_COMMAND_ID_INVALID 0 #define CXL_MEM_COMMAND_ID_RAW 1 -#define CXL_MEM_COMMAND_ID_MAX (CXL_MEM_COMMAND_ID_RAW + 1) +#define CXL_MEM_COMMAND_ID_GET_FW_INFO 2 +#define CXL_MEM_COMMAND_ID_MAX (CXL_MEM_COMMAND_ID_GET_FW_INFO + 1) __u32 flags; #define CXL_MEM_COMMAND_FLAG_NONE 0