From patchwork Fri Apr 24 17:54:20 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Suman Anna X-Patchwork-Id: 6272721 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 670899F1C4 for ; Fri, 24 Apr 2015 17:57:39 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 2D668202E5 for ; Fri, 24 Apr 2015 17:57:38 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 034E22015A for ; Fri, 24 Apr 2015 17:57:37 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1YlhoQ-0004fQ-Gv; Fri, 24 Apr 2015 17:54:50 +0000 Received: from devils.ext.ti.com ([198.47.26.153]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1YlhoL-0004cq-Ck for linux-arm-kernel@lists.infradead.org; Fri, 24 Apr 2015 17:54:46 +0000 Received: from dflxv15.itg.ti.com ([128.247.5.124]) by devils.ext.ti.com (8.13.7/8.13.7) with ESMTP id t3OHsNop013896; Fri, 24 Apr 2015 12:54:23 -0500 Received: from DFLE73.ent.ti.com (dfle73.ent.ti.com [128.247.5.110]) by dflxv15.itg.ti.com (8.14.3/8.13.8) with ESMTP id t3OHsM8T010637; Fri, 24 Apr 2015 12:54:22 -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 14.3.224.2; Fri, 24 Apr 2015 12:54:21 -0500 Received: from legion.dal.design.ti.com (legion.dal.design.ti.com [128.247.22.53]) by dflp32.itg.ti.com (8.14.3/8.13.8) with ESMTP id t3OHsLoR005928; Fri, 24 Apr 2015 12:54:22 -0500 Received: from localhost (irmo.am.dhcp.ti.com [128.247.9.166]) by legion.dal.design.ti.com (8.11.7p1+Sun/8.11.7) with ESMTP id t3OHsL922623; Fri, 24 Apr 2015 12:54:21 -0500 (CDT) From: Suman Anna To: Tony Lindgren Subject: [PATCH] bus: omap_l3_noc: Fix master id address decoding for OMAP5 Date: Fri, 24 Apr 2015 12:54:20 -0500 Message-ID: <1429898060-51944-1-git-send-email-s-anna@ti.com> X-Mailer: git-send-email 2.3.5 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20150424_105445_575809_4715CEC4 X-CRM114-Status: GOOD ( 13.16 ) X-Spam-Score: -5.0 (-----) Cc: devicetree@vger.kernel.org, Nishanth Menon , linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, T_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 The L3 Error handling on OMAP5 for the most part is very similar to that of OMAP4, and had leveraged common data structures and register layout definitions so far. Upon closer inspection, there are a few minor differences causing an incorrect decoding and reporting of the master NIU upon an error: 1. The L3_TARG_STDERRLOG_MSTADDR.STDERRLOG_MSTADDR occupies 11 bits on OMAP5 as against 8 bits on OMAP4, with the master NIU connID encoded in the 6 MSBs of the STDERRLOG_MSTADDR field. 2. The CLK3 FlagMux component has 1 input source on OMAP4 and 3 input sources on OMAP5. The common DEBUGSS source is at a different input on each SoC. Fix the above issues by using a OMAP5-specific compatible property and using SoC-specific data where there are differences. Cc: Nishanth Menon Signed-off-by: Suman Anna Acked-by: Nishanth Menon --- Some validation traces by adding couple of traces and intentionally creating L3 errors from DSP & IPU by accessing invalid Timers Before Patch: OMAP4 [Correct] IPU accessing Timer4 [ 46.548095] flagmux = 1, err_reg = 0x8000 err_src = 0xf [ 46.553344] mstaddr = 0x44 mask = 0xfc masterid = 0x11 [ 46.553955] ------------[ cut here ]------------ [ 46.563171] WARNING: CPU: 0 PID: 4 at drivers/bus/omap_l3_noc.c:149 l3_interrupt_handler+0x280/0x388() [ 46.564941] 44000000.ocp:L3 Custom Error: MASTER DucatiM3 TARGET L4PER3 (Idle): Data Access in User mode during Functional access DSP accessing Timer5: [ 114.018524] flagmux = 0, err_reg = 0x4 err_src = 0x2 [ 114.023498] mstaddr = 0x20 mask = 0xfc masterid = 0x8 [ 114.028564] ------------[ cut here ]------------ [ 114.033233] WARNING: CPU: 0 PID: 0 at drivers/bus/omap_l3_noc.c:149 l3_interrupt_handler+0x280/0x388() [ 114.042572] 44000000.ocp:L3 Custom Error: MASTER DSP TARGET ABE (Idle): Data Access in Supervisor mode during Functional access OMAP5 [Incorrect] IPU accessing Timer4: [ 29.579306] flagmux = 1, err_reg = 0x8000 err_src = 0xf [ 29.584550] mstaddr = 0x220 mask = 0xfc masterid = 0x8 [ 29.589705] ------------[ cut here ]------------ [ 29.594345] WARNING: CPU: 0 PID: 61 at drivers/bus/omap_l3_noc.c:149 l3_interrupt_handler+0x280/0x388() [ 29.603774] 44000000.ocp:L3 Custom Error: MASTER DSP TARGET L4PER3 (Idle): Data Access in User mode during Functional access DSP accessing Timer5: [ 21.347105] flagmux = 0, err_reg = 0x4 err_src = 0x2 [ 21.352091] mstaddr = 0x100 mask = 0xfc masterid = 0x0 [ 21.357250] ------------[ cut here ]------------ [ 21.361896] WARNING: CPU: 0 PID: 0 at drivers/bus/omap_l3_noc.c:149 l3_interrupt_handler+0x280/0x388() [ 21.371242] 44000000.ocp:L3 Custom Error: MASTER MPU TARGET ABE (Idle): Data Access in Supervisor mode during Functional access After Patch: OMAP4 same as above OMAP5 [Corrected] IPU accessing Timer4 [ 67.896693] flagmux = 1, err_reg = 0x8000 err_src = 0xf [ 67.901940] mstaddr = 0x220 mask = 0x7e0 masterid = 0x11 [ 67.907275] ------------[ cut here ]------------ [ 67.911924] WARNING: CPU: 0 PID: 61 at drivers/bus/omap_l3_noc.c:149 l3_interrupt_handler+0x280/0x388() [ 67.921357] 44000000.ocp:L3 Custom Error: MASTER DucatiM3 TARGET L4PER3 (Idle): Data Access in User mode during Functional access DSP accessing Timer5 [ 24.452565] flagmux = 0, err_reg = 0x4 err_src = 0x2 [ 24.457552] mstaddr = 0x100 mask = 0x7e0 masterid = 0x8 [ 24.462798] ------------[ cut here ]------------ [ 24.467449] WARNING: CPU: 0 PID: 0 at drivers/bus/omap_l3_noc.c:149 l3_interrupt_handler+0x280/0x388() [ 24.476795] 44000000.ocp:L3 Custom Error: MASTER DSP TARGET ABE (Idle): Data Access in Supervisor mode during Functional access .../devicetree/bindings/arm/omap/l3-noc.txt | 1 + arch/arm/boot/dts/omap5.dtsi | 2 +- drivers/bus/omap_l3_noc.c | 5 ++- drivers/bus/omap_l3_noc.h | 52 ++++++++++++++++------ 4 files changed, 44 insertions(+), 16 deletions(-) diff --git a/Documentation/devicetree/bindings/arm/omap/l3-noc.txt b/Documentation/devicetree/bindings/arm/omap/l3-noc.txt index 974624ea68f6..161448da959d 100644 --- a/Documentation/devicetree/bindings/arm/omap/l3-noc.txt +++ b/Documentation/devicetree/bindings/arm/omap/l3-noc.txt @@ -6,6 +6,7 @@ provided by Arteris. Required properties: - compatible : Should be "ti,omap3-l3-smx" for OMAP3 family Should be "ti,omap4-l3-noc" for OMAP4 family + Should be "ti,omap5-l3-noc" for OMAP5 family Should be "ti,dra7-l3-noc" for DRA7 family Should be "ti,am4372-l3-noc" for AM43 family - reg: Contains L3 register address range for each noc domain. diff --git a/arch/arm/boot/dts/omap5.dtsi b/arch/arm/boot/dts/omap5.dtsi index efe5f737f39b..7d24ae0306b5 100644 --- a/arch/arm/boot/dts/omap5.dtsi +++ b/arch/arm/boot/dts/omap5.dtsi @@ -128,7 +128,7 @@ * hierarchy. */ ocp { - compatible = "ti,omap4-l3-noc", "simple-bus"; + compatible = "ti,omap5-l3-noc", "simple-bus"; #address-cells = <1>; #size-cells = <1>; ranges; diff --git a/drivers/bus/omap_l3_noc.c b/drivers/bus/omap_l3_noc.c index 11f7982cbdb3..ebee57d715d2 100644 --- a/drivers/bus/omap_l3_noc.c +++ b/drivers/bus/omap_l3_noc.c @@ -1,7 +1,7 @@ /* * OMAP L3 Interconnect error handling driver * - * Copyright (C) 2011-2014 Texas Instruments Incorporated - http://www.ti.com/ + * Copyright (C) 2011-2015 Texas Instruments Incorporated - http://www.ti.com/ * Santosh Shilimkar * Sricharan * @@ -233,7 +233,8 @@ static irqreturn_t l3_interrupt_handler(int irq, void *_l3) } static const struct of_device_id l3_noc_match[] = { - {.compatible = "ti,omap4-l3-noc", .data = &omap_l3_data}, + {.compatible = "ti,omap4-l3-noc", .data = &omap4_l3_data}, + {.compatible = "ti,omap5-l3-noc", .data = &omap5_l3_data}, {.compatible = "ti,dra7-l3-noc", .data = &dra_l3_data}, {.compatible = "ti,am4372-l3-noc", .data = &am4372_l3_data}, {}, diff --git a/drivers/bus/omap_l3_noc.h b/drivers/bus/omap_l3_noc.h index 95254585db86..3ba40db7380b 100644 --- a/drivers/bus/omap_l3_noc.h +++ b/drivers/bus/omap_l3_noc.h @@ -1,7 +1,7 @@ /* * OMAP L3 Interconnect error handling driver header * - * Copyright (C) 2011-2014 Texas Instruments Incorporated - http://www.ti.com/ + * Copyright (C) 2011-2015 Texas Instruments Incorporated - http://www.ti.com/ * Santosh Shilimkar * sricharan * @@ -175,16 +175,14 @@ static struct l3_flagmux_data omap_l3_flagmux_clk2 = { }; -static struct l3_target_data omap_l3_target_data_clk3[] = { - {0x0100, "EMUSS",}, - {0x0300, "DEBUG SOURCE",}, - {0x0, "HOST CLK3",}, +static struct l3_target_data omap4_l3_target_data_clk3[] = { + {0x0100, "DEBUGSS",}, }; -static struct l3_flagmux_data omap_l3_flagmux_clk3 = { +static struct l3_flagmux_data omap4_l3_flagmux_clk3 = { .offset = 0x0200, - .l3_targ = omap_l3_target_data_clk3, - .num_targ_data = ARRAY_SIZE(omap_l3_target_data_clk3), + .l3_targ = omap4_l3_target_data_clk3, + .num_targ_data = ARRAY_SIZE(omap4_l3_target_data_clk3), }; static struct l3_masters_data omap_l3_masters[] = { @@ -215,21 +213,49 @@ static struct l3_masters_data omap_l3_masters[] = { { 0x32, "USBHOSTFS"} }; -static struct l3_flagmux_data *omap_l3_flagmux[] = { +static struct l3_flagmux_data *omap4_l3_flagmux[] = { &omap_l3_flagmux_clk1, &omap_l3_flagmux_clk2, - &omap_l3_flagmux_clk3, + &omap4_l3_flagmux_clk3, }; -static const struct omap_l3 omap_l3_data = { - .l3_flagmux = omap_l3_flagmux, - .num_modules = ARRAY_SIZE(omap_l3_flagmux), +static const struct omap_l3 omap4_l3_data = { + .l3_flagmux = omap4_l3_flagmux, + .num_modules = ARRAY_SIZE(omap4_l3_flagmux), .l3_masters = omap_l3_masters, .num_masters = ARRAY_SIZE(omap_l3_masters), /* The 6 MSBs of register field used to distinguish initiator */ .mst_addr_mask = 0xFC, }; +/* OMAP5 data */ +static struct l3_target_data omap5_l3_target_data_clk3[] = { + {0x0100, "L3INSTR",}, + {0x0300, "DEBUGSS",}, + {0x0, "HOSTCLK3",}, +}; + +static struct l3_flagmux_data omap5_l3_flagmux_clk3 = { + .offset = 0x0200, + .l3_targ = omap5_l3_target_data_clk3, + .num_targ_data = ARRAY_SIZE(omap5_l3_target_data_clk3), +}; + +static struct l3_flagmux_data *omap5_l3_flagmux[] = { + &omap_l3_flagmux_clk1, + &omap_l3_flagmux_clk2, + &omap5_l3_flagmux_clk3, +}; + +static const struct omap_l3 omap5_l3_data = { + .l3_flagmux = omap5_l3_flagmux, + .num_modules = ARRAY_SIZE(omap5_l3_flagmux), + .l3_masters = omap_l3_masters, + .num_masters = ARRAY_SIZE(omap_l3_masters), + /* The 6 MSBs of register field used to distinguish initiator */ + .mst_addr_mask = 0x7E0, +}; + /* DRA7 data */ static struct l3_target_data dra_l3_target_data_clk1[] = { {0x2a00, "AES1",},