From patchwork Wed Aug 19 11:58:53 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mika Westerberg X-Patchwork-Id: 11723735 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 47F5914E3 for ; Wed, 19 Aug 2020 12:00:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 38C3A2075E for ; Wed, 19 Aug 2020 12:00:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728494AbgHSL7b (ORCPT ); Wed, 19 Aug 2020 07:59:31 -0400 Received: from mga11.intel.com ([192.55.52.93]:23197 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728453AbgHSL7R (ORCPT ); Wed, 19 Aug 2020 07:59:17 -0400 IronPort-SDR: jkgx8MdRyBTdVo8Y2ycmSS9Y4UbPJ34a1ao272IYd1BELj3dJStEv+h8sDpYd62VbK5L0BTqQe LkEU9aRZ785w== X-IronPort-AV: E=McAfee;i="6000,8403,9717"; a="152708174" X-IronPort-AV: E=Sophos;i="5.76,331,1592895600"; d="scan'208";a="152708174" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Aug 2020 04:59:14 -0700 IronPort-SDR: Nttxb4+YcF2yr3xWeLrmOtQkjZYMskIXL2yWeXYUHPXmATj3QmhtGB82UaaTpBcau3TsW3Cn1a z8kRFV3xNz4Q== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.76,331,1592895600"; d="scan'208";a="400804657" Received: from black.fi.intel.com ([10.237.72.28]) by fmsmga001.fm.intel.com with ESMTP; 19 Aug 2020 04:59:11 -0700 Received: by black.fi.intel.com (Postfix, from userid 1001) id 960A43DF; Wed, 19 Aug 2020 14:59:06 +0300 (EEST) From: Mika Westerberg To: linux-usb@vger.kernel.org Cc: Michael Jamet , Yehezkel Bernat , Mika Westerberg , Andreas Noever , Rajmohan Mani , Dana Alkattan , Lukas Wunner , "Rafael J . Wysocki" , Bjorn Helgaas , Len Brown , Greg Kroah-Hartman , linux-acpi@vger.kernel.org, linux-pci@vger.kernel.org Subject: [PATCH 07/19] thunderbolt: Send reset only to first generation routers Date: Wed, 19 Aug 2020 14:58:53 +0300 Message-Id: <20200819115905.59834-8-mika.westerberg@linux.intel.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200819115905.59834-1-mika.westerberg@linux.intel.com> References: <20200819115905.59834-1-mika.westerberg@linux.intel.com> MIME-Version: 1.0 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org First generation routers may need the reset command upon resume but it is not supported by newer generations. Signed-off-by: Mika Westerberg --- drivers/thunderbolt/switch.c | 21 +++++++++++---------- drivers/thunderbolt/tb.c | 2 +- drivers/thunderbolt/tb.h | 2 +- 3 files changed, 13 insertions(+), 12 deletions(-) diff --git a/drivers/thunderbolt/switch.c b/drivers/thunderbolt/switch.c index 72756c8ceead..fb30ea1dfc31 100644 --- a/drivers/thunderbolt/switch.c +++ b/drivers/thunderbolt/switch.c @@ -1234,23 +1234,24 @@ static void tb_dump_switch(const struct tb *tb, const struct tb_switch *sw) /** * reset_switch() - reconfigure route, enable and send TB_CFG_PKG_RESET + * @sw: Switch to reset * * Return: Returns 0 on success or an error code on failure. */ -int tb_switch_reset(struct tb *tb, u64 route) +int tb_switch_reset(struct tb_switch *sw) { struct tb_cfg_result res; - struct tb_regs_switch_header header = { - header.route_hi = route >> 32, - header.route_lo = route, - header.enabled = true, - }; - tb_dbg(tb, "resetting switch at %llx\n", route); - res.err = tb_cfg_write(tb->ctl, ((u32 *) &header) + 2, route, - 0, 2, 2, 2); + + if (sw->generation > 1) + return 0; + + tb_sw_dbg(sw, "resetting switch\n"); + + res.err = tb_sw_write(sw, ((u32 *) &sw->config) + 2, + TB_CFG_SWITCH, 2, 2); if (res.err) return res.err; - res = tb_cfg_reset(tb->ctl, route, TB_CFG_DEFAULT_TIMEOUT); + res = tb_cfg_reset(sw->tb->ctl, tb_route(sw), TB_CFG_DEFAULT_TIMEOUT); if (res.err > 0) return -EIO; return res.err; diff --git a/drivers/thunderbolt/tb.c b/drivers/thunderbolt/tb.c index 98f268a818a0..a6da2d0567ae 100644 --- a/drivers/thunderbolt/tb.c +++ b/drivers/thunderbolt/tb.c @@ -1258,7 +1258,7 @@ static int tb_resume_noirq(struct tb *tb) tb_dbg(tb, "resuming...\n"); /* remove any pci devices the firmware might have setup */ - tb_switch_reset(tb, 0); + tb_switch_reset(tb->root_switch); tb_switch_resume(tb->root_switch); tb_free_invalid_tunnels(tb); diff --git a/drivers/thunderbolt/tb.h b/drivers/thunderbolt/tb.h index df08f6d7aaa0..69e78bbed53a 100644 --- a/drivers/thunderbolt/tb.h +++ b/drivers/thunderbolt/tb.h @@ -634,7 +634,7 @@ int tb_switch_add(struct tb_switch *sw); void tb_switch_remove(struct tb_switch *sw); void tb_switch_suspend(struct tb_switch *sw); int tb_switch_resume(struct tb_switch *sw); -int tb_switch_reset(struct tb *tb, u64 route); +int tb_switch_reset(struct tb_switch *sw); void tb_sw_set_unplugged(struct tb_switch *sw); struct tb_port *tb_switch_find_port(struct tb_switch *sw, enum tb_port_type type);