From patchwork Wed Feb 6 13:17:19 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mika Westerberg X-Patchwork-Id: 1037515 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=linux.intel.com Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 43vhtd5YH6z9sML for ; Thu, 7 Feb 2019 00:22:01 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730957AbfBFNVu (ORCPT ); Wed, 6 Feb 2019 08:21:50 -0500 Received: from mga03.intel.com ([134.134.136.65]:26750 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730244AbfBFNRr (ORCPT ); Wed, 6 Feb 2019 08:17:47 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga001.jf.intel.com ([10.7.209.18]) by orsmga103.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 06 Feb 2019 05:17:45 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.58,340,1544515200"; d="scan'208";a="136336022" Received: from black.fi.intel.com ([10.237.72.28]) by orsmga001.jf.intel.com with ESMTP; 06 Feb 2019 05:17:42 -0800 Received: by black.fi.intel.com (Postfix, from userid 1001) id DE0984ED; Wed, 6 Feb 2019 15:17:38 +0200 (EET) From: Mika Westerberg To: linux-kernel@vger.kernel.org Cc: Michael Jamet , Yehezkel Bernat , Andreas Noever , Lukas Wunner , "David S . Miller" , Mika Westerberg , Andy Shevchenko , netdev@vger.kernel.org Subject: [PATCH v2 09/28] thunderbolt: Cache adapter specific capability offset into struct port Date: Wed, 6 Feb 2019 16:17:19 +0300 Message-Id: <20190206131738.43696-10-mika.westerberg@linux.intel.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190206131738.43696-1-mika.westerberg@linux.intel.com> References: <20190206131738.43696-1-mika.westerberg@linux.intel.com> MIME-Version: 1.0 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org The adapter specific capability either is there or not if the port does not hold an adapter. Instead of always finding it on-demand we read the offset just once when the port is initialized. While there we update the struct port documentation to follow kernel-doc format. Signed-off-by: Mika Westerberg --- drivers/thunderbolt/switch.c | 4 ++++ drivers/thunderbolt/tb.c | 8 ++++---- drivers/thunderbolt/tb.h | 2 ++ drivers/thunderbolt/tunnel_pci.c | 9 +++------ 4 files changed, 13 insertions(+), 10 deletions(-) diff --git a/drivers/thunderbolt/switch.c b/drivers/thunderbolt/switch.c index 1eee2502b5ba..ec3c274ff278 100644 --- a/drivers/thunderbolt/switch.c +++ b/drivers/thunderbolt/switch.c @@ -593,6 +593,10 @@ static int tb_init_port(struct tb_port *port) port->cap_phy = cap; else tb_port_WARN(port, "non switch port without a PHY\n"); + } else if (port->port != 0) { + cap = tb_port_find_cap(port, TB_PORT_CAP_ADAP); + if (cap > 0) + port->cap_adap = cap; } tb_dump_port(port->sw->tb, &port->config); diff --git a/drivers/thunderbolt/tb.c b/drivers/thunderbolt/tb.c index 30e02c716f6c..7fd88b41d082 100644 --- a/drivers/thunderbolt/tb.c +++ b/drivers/thunderbolt/tb.c @@ -151,8 +151,8 @@ static struct tb_port *tb_find_unused_down_port(struct tb_switch *sw) continue; if (sw->ports[i].config.type != TB_TYPE_PCIE_DOWN) continue; - cap = tb_port_find_cap(&sw->ports[i], TB_PORT_CAP_ADAP); - if (cap < 0) + cap = sw->ports[i].cap_adap; + if (!cap) continue; res = tb_port_read(&sw->ports[i], &data, TB_CFG_PORT, cap, 1); if (res < 0) @@ -197,8 +197,8 @@ static void tb_activate_pcie_devices(struct tb *tb) } /* check whether port is already activated */ - cap = tb_port_find_cap(up_port, TB_PORT_CAP_ADAP); - if (cap < 0) + cap = up_port->cap_adap; + if (!cap) continue; if (tb_port_read(up_port, &data, TB_CFG_PORT, cap, 1)) continue; diff --git a/drivers/thunderbolt/tb.h b/drivers/thunderbolt/tb.h index 3160169389cc..bab451ab31ff 100644 --- a/drivers/thunderbolt/tb.h +++ b/drivers/thunderbolt/tb.h @@ -124,6 +124,7 @@ struct tb_switch { * @remote: Remote port (%NULL if not connected) * @xdomain: Remote host (%NULL if not connected) * @cap_phy: Offset, zero if not found + * @cap_adap: Offset of the adapter specific capability (%0 if not present) * @port: Port number on switch * @disabled: Disabled by eeprom * @dual_link_port: If the switch is connected using two ports, points @@ -136,6 +137,7 @@ struct tb_port { struct tb_port *remote; struct tb_xdomain *xdomain; int cap_phy; + int cap_adap; u8 port; bool disabled; struct tb_port *dual_link_port; diff --git a/drivers/thunderbolt/tunnel_pci.c b/drivers/thunderbolt/tunnel_pci.c index 0637537ea53f..2de4edccbd6d 100644 --- a/drivers/thunderbolt/tunnel_pci.c +++ b/drivers/thunderbolt/tunnel_pci.c @@ -148,12 +148,9 @@ bool tb_pci_is_invalid(struct tb_pci_tunnel *tunnel) static int tb_pci_port_active(struct tb_port *port, bool active) { u32 word = active ? 0x80000000 : 0x0; - int cap = tb_port_find_cap(port, TB_PORT_CAP_ADAP); - if (cap < 0) { - tb_port_warn(port, "TB_PORT_CAP_ADAP not found: %d\n", cap); - return cap; - } - return tb_port_write(port, &word, TB_CFG_PORT, cap, 1); + if (!port->cap_adap) + return -ENXIO; + return tb_port_write(port, &word, TB_CFG_PORT, port->cap_adap, 1); } /**