From patchwork Mon Jun 12 08:21:32 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mika Westerberg X-Patchwork-Id: 13275832 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 33DE7C7EE25 for ; Mon, 12 Jun 2023 08:53:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234211AbjFLIxk (ORCPT ); Mon, 12 Jun 2023 04:53:40 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52482 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233935AbjFLIxH (ORCPT ); Mon, 12 Jun 2023 04:53:07 -0400 Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1BCB8268A for ; Mon, 12 Jun 2023 01:52:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1686559945; x=1718095945; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=pkgD4LRkd2/zDwOPGpc94eNLUX1+9W2u1GBpQ+li/q0=; b=Gh3l9gzTg924M9I1XM53R21xTMIi08TsKMRXDX3z06Y+0R8LGJeGgOwY axKE0BNJFeOV3efGhsLxTjC3UCuGTNvMFhi6GNU9GdzvJOcx285g7Dvmy +GKL0u4AAMd4/1e7OjN2TthkVvtbi4wOmmAZYppVwXNgPvF52BK3WFkjm oHaOSo1aT3Bvybqrgu6R3Zb2ny36CZ9Zua9uwjyaKrpfR4MKIad3OeytE Ti+tBm6js8bhQc+3tbB8r8j6Ayp8huu9u9J9qcJLWUi/TLY/eOcAa+QpT gXlaAkaMrxUHmwq4MDBoZnv2gOnWXL+xJ+fX9jBGimoS7rRK8RWF9B7cG g==; X-IronPort-AV: E=McAfee;i="6600,9927,10738"; a="347627281" X-IronPort-AV: E=Sophos;i="6.00,236,1681196400"; d="scan'208";a="347627281" Received: from orsmga001.jf.intel.com ([10.7.209.18]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Jun 2023 01:21:42 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10738"; a="744247754" X-IronPort-AV: E=Sophos;i="6.00,236,1681196400"; d="scan'208";a="744247754" Received: from black.fi.intel.com ([10.237.72.28]) by orsmga001.jf.intel.com with ESMTP; 12 Jun 2023 01:21:40 -0700 Received: by black.fi.intel.com (Postfix, from userid 1001) id 968BA6AE; Mon, 12 Jun 2023 11:21:45 +0300 (EEST) From: Mika Westerberg To: linux-usb@vger.kernel.org Cc: Gil Fine , Yehezkel Bernat , Michael Jamet , Lukas Wunner , Andreas Noever , Mika Westerberg Subject: [PATCH v2 07/20] thunderbolt: Announce USB4 v2 connection manager support Date: Mon, 12 Jun 2023 11:21:32 +0300 Message-Id: <20230612082145.62218-8-mika.westerberg@linux.intel.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230612082145.62218-1-mika.westerberg@linux.intel.com> References: <20230612082145.62218-1-mika.westerberg@linux.intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org From: Gil Fine Program the CMUV (Connection Manager USB4 Version) field for USB4 v2 and v1 routers according to the spec. Signed-off-by: Gil Fine Signed-off-by: Mika Westerberg --- drivers/thunderbolt/switch.c | 8 ++++++-- drivers/thunderbolt/tb_regs.h | 3 +++ 2 files changed, 9 insertions(+), 2 deletions(-) diff --git a/drivers/thunderbolt/switch.c b/drivers/thunderbolt/switch.c index a0451218af2a..ebe9559c8c79 100644 --- a/drivers/thunderbolt/switch.c +++ b/drivers/thunderbolt/switch.c @@ -2430,9 +2430,13 @@ int tb_switch_configure(struct tb_switch *sw) /* * For USB4 devices, we need to program the CM version * accordingly so that it knows to expose all the - * additional capabilities. + * additional capabilities. Program it according to USB4 + * version to avoid changing existing (v1) routers behaviour. */ - sw->config.cmuv = USB4_VERSION_1_0; + if (usb4_switch_version(sw) < 2) + sw->config.cmuv = ROUTER_CS_4_CMUV_V1; + else + sw->config.cmuv = ROUTER_CS_4_CMUV_V2; sw->config.plug_events_delay = 0xa; /* Enumerate the switch */ diff --git a/drivers/thunderbolt/tb_regs.h b/drivers/thunderbolt/tb_regs.h index 69455eaf6351..c8e40ef09903 100644 --- a/drivers/thunderbolt/tb_regs.h +++ b/drivers/thunderbolt/tb_regs.h @@ -195,6 +195,9 @@ struct tb_regs_switch_header { #define ROUTER_CS_1 0x01 #define ROUTER_CS_4 0x04 +/* Used with the router cmuv field */ +#define ROUTER_CS_4_CMUV_V1 0x10 +#define ROUTER_CS_4_CMUV_V2 0x20 #define ROUTER_CS_5 0x05 #define ROUTER_CS_5_SLP BIT(0) #define ROUTER_CS_5_WOP BIT(1)