From patchwork Mon Apr 14 16:25:13 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nishanth Menon X-Patchwork-Id: 3984241 Return-Path: X-Original-To: patchwork-linux-omap@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 32A849F2BA for ; Mon, 14 Apr 2014 16:50:38 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 4AAA7201DC for ; Mon, 14 Apr 2014 16:50:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6403D2018E for ; Mon, 14 Apr 2014 16:50:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754877AbaDNQt4 (ORCPT ); Mon, 14 Apr 2014 12:49:56 -0400 Received: from bear.ext.ti.com ([192.94.94.41]:35199 "EHLO bear.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754764AbaDNQZx (ORCPT ); Mon, 14 Apr 2014 12:25:53 -0400 Received: from dlelxv90.itg.ti.com ([172.17.2.17]) by bear.ext.ti.com (8.13.7/8.13.7) with ESMTP id s3EGPRBq023622; Mon, 14 Apr 2014 11:25:27 -0500 Received: from DFLE73.ent.ti.com (dfle73.ent.ti.com [128.247.5.110]) by dlelxv90.itg.ti.com (8.14.3/8.13.8) with ESMTP id s3EGPRRE002144; Mon, 14 Apr 2014 11:25:27 -0500 Received: from dflp32.itg.ti.com (10.64.6.15) by DFLE73.ent.ti.com (128.247.5.110) with Microsoft SMTP Server id 14.3.174.1; Mon, 14 Apr 2014 11:25:27 -0500 Received: from localhost (ileax41-snat.itg.ti.com [10.172.224.153]) by dflp32.itg.ti.com (8.14.3/8.13.8) with ESMTP id s3EGPRZZ021615; Mon, 14 Apr 2014 11:25:27 -0500 From: Nishanth Menon To: Tony Lindgren , Santosh Shilimkar , Sricharan R CC: Sekhar Nori , Rajendra Nayak , Nishanth Menon , Peter Ujfalusi , , , , Subject: [PATCH 02/15] bus: omap_l3_noc: switch over to relaxed variants of readl/writel Date: Mon, 14 Apr 2014 11:25:13 -0500 Message-ID: <1397492726-17203-4-git-send-email-nm@ti.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1397492726-17203-1-git-send-email-nm@ti.com> References: <1397492726-17203-1-git-send-email-nm@ti.com> MIME-Version: 1.0 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Spam-Status: No, score=-7.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Currently we use __raw_readl and writel in this driver, however, there is no strict sequencing needs for this driver, hence we should be good with the relaxed variants. While at it, simplify address computation using variables for register. Signed-off-by: Nishanth Menon --- drivers/bus/omap_l3_noc.c | 26 ++++++++++++++------------ 1 file changed, 14 insertions(+), 12 deletions(-) diff --git a/drivers/bus/omap_l3_noc.c b/drivers/bus/omap_l3_noc.c index 1eb6d85..0d346e6 100644 --- a/drivers/bus/omap_l3_noc.c +++ b/drivers/bus/omap_l3_noc.c @@ -55,6 +55,7 @@ static irqreturn_t l3_interrupt_handler(int irq, void *_l3) int err_src = 0; u32 std_err_main, err_reg, clear, masterid; void __iomem *base, *l3_targ_base; + void __iomem *l3_targ_stderr, *l3_targ_slvofslsb, *l3_targ_mstaddr; char *target_name, *master_name = "UN IDENTIFIED"; /* Get the Type of interrupt */ @@ -66,8 +67,8 @@ static irqreturn_t l3_interrupt_handler(int irq, void *_l3) * to determine the source */ base = l3->l3_base[i]; - err_reg = __raw_readl(base + l3_flagmux[i] + - + L3_FLAGMUX_REGERR0 + (inttype << 3)); + err_reg = readl_relaxed(base + l3_flagmux[i] + + L3_FLAGMUX_REGERR0 + (inttype << 3)); /* Get the corresponding error and analyse */ if (err_reg) { @@ -76,10 +77,14 @@ static irqreturn_t l3_interrupt_handler(int irq, void *_l3) /* Read the stderrlog_main_source from clk domain */ l3_targ_base = base + *(l3_targ[i] + err_src); - std_err_main = __raw_readl(l3_targ_base + - L3_TARG_STDERRLOG_MAIN); - masterid = __raw_readl(l3_targ_base + - L3_TARG_STDERRLOG_MSTADDR); + l3_targ_stderr = l3_targ_base + L3_TARG_STDERRLOG_MAIN; + l3_targ_slvofslsb = l3_targ_base + + L3_TARG_STDERRLOG_SLVOFSLSB; + l3_targ_mstaddr = l3_targ_base + + L3_TARG_STDERRLOG_MSTADDR; + + std_err_main = readl_relaxed(l3_targ_stderr); + masterid = readl_relaxed(l3_targ_mstaddr); switch (std_err_main & CUSTOM_ERROR) { case STANDARD_ERROR: @@ -87,12 +92,10 @@ static irqreturn_t l3_interrupt_handler(int irq, void *_l3) l3_targ_inst_name[i][err_src]; WARN(true, "L3 standard error: TARGET:%s at address 0x%x\n", target_name, - __raw_readl(l3_targ_base + - L3_TARG_STDERRLOG_SLVOFSLSB)); + readl_relaxed(l3_targ_slvofslsb)); /* clear the std error log*/ clear = std_err_main | CLEAR_STDERR_LOG; - writel(clear, l3_targ_base + - L3_TARG_STDERRLOG_MAIN); + writel_relaxed(clear, l3_targ_stderr); break; case CUSTOM_ERROR: @@ -107,8 +110,7 @@ static irqreturn_t l3_interrupt_handler(int irq, void *_l3) master_name, target_name); /* clear the std error log*/ clear = std_err_main | CLEAR_STDERR_LOG; - writel(clear, l3_targ_base + - L3_TARG_STDERRLOG_MAIN); + writel_relaxed(clear, l3_targ_stderr); break; default: