From patchwork Mon Aug 10 12:22:05 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Guillaume Tucker X-Patchwork-Id: 11707365 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 C03E2174A for ; Mon, 10 Aug 2020 12:22:45 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 9A1F520709 for ; Mon, 10 Aug 2020 12:22:45 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="uTbD/ary" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9A1F520709 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=collabora.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:Message-Id:Date:Subject:To:From: Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender :Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=9lrCMcWt5OXrXfVGBllEsqle/aeXHK6HUEJd4CmvAcY=; b=uTbD/ary6VUu8nS8rlgvt+16+o NpJiTpo9kidWrDHdKC23ROGSgjW2A7iWAb+q4h3ndooeHyFX9oxoWUnLCgrZxXhwWNkDFG6It4Wpg gwU95N8MIK2KQGdKAL8nLoPp/Ti63R0AGlewH9ytkyiI6S3yXy3iIf4NRd0IHQIvhJhmgHnV2P1Mf qdguq5ue5XfFmdrY0sqOUcBYvPK0wNv/kzU33vcFYxEIpIhUIMXZ79+kz+IWx3Amj8YC93rLGcYhE 2BrG0p/6x4jaFam6aROh7eds+V8dTUFlUq9O34xeffN0B0ceBkP6QYIOeYTl96JFkIBZ2uM6VsZk9 DZ6D9Nmw==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1k56p0-0001Ua-60; Mon, 10 Aug 2020 12:22:34 +0000 Received: from bhuna.collabora.co.uk ([2a00:1098:0:82:1000:25:2eeb:e3e3]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1k56os-0001S9-2G for linux-arm-kernel@lists.infradead.org; Mon, 10 Aug 2020 12:22:27 +0000 Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: gtucker) with ESMTPSA id 215E5293504 From: Guillaume Tucker To: Russell King , Kukjin Kim , Krzysztof Kozlowski , Rob Herring Subject: [PATCH v2 1/4] ARM: exynos: clear L310_AUX_CTRL_NS_LOCKDOWN in default l2c_aux_val Date: Mon, 10 Aug 2020 13:22:05 +0100 Message-Id: <267a81e550a0b5d479c82b5908e2a2caa4c9c874.1597061474.git.guillaume.tucker@collabora.com> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200810_082226_324276_EB449AD0 X-CRM114-Status: GOOD ( 16.54 ) X-Spam-Score: -0.0 (/) X-Spam-Report: SpamAssassin version 3.4.4 on merlin.infradead.org summary: Content analysis details: (-0.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 SPF_PASS SPF: sender matches SPF record -0.0 SPF_HELO_PASS SPF: HELO matches SPF record 0.0 UNPARSEABLE_RELAY Informational: message has unparseable relay lines X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, linux-samsung-soc@vger.kernel.org, kernel@collabora.com, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org The L310_AUX_CTRL_NS_LOCKDOWN flag is set during the L2C enable sequence. There is no need to set it in the default register value, this was done before support for it was implemented in the code. It is not set in the hardware initial value either. Clean this up by removing this flag from the default l2c_aux_val, and add it to the l2c_aux_mask to print an alert message if it was already set before the kernel initialisation. Signed-off-by: Guillaume Tucker --- Notes: v2: fix flag name L310_AUX_CTRL_NS_LOCKDOWN arch/arm/mach-exynos/exynos.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm/mach-exynos/exynos.c b/arch/arm/mach-exynos/exynos.c index 36c37444485a..a96f3353a0c1 100644 --- a/arch/arm/mach-exynos/exynos.c +++ b/arch/arm/mach-exynos/exynos.c @@ -193,8 +193,8 @@ static void __init exynos_dt_fixup(void) } DT_MACHINE_START(EXYNOS_DT, "Samsung Exynos (Flattened Device Tree)") - .l2c_aux_val = 0x3c400000, - .l2c_aux_mask = 0xc20fffff, + .l2c_aux_val = 0x38400000, + .l2c_aux_mask = 0xc60fffff, .smp = smp_ops(exynos_smp_ops), .map_io = exynos_init_io, .init_early = exynos_firmware_init, From patchwork Mon Aug 10 12:22:06 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Guillaume Tucker X-Patchwork-Id: 11707367 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 30942109A for ; Mon, 10 Aug 2020 12:23:55 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 0936B20709 for ; Mon, 10 Aug 2020 12:23:55 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="aLQBTcER" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0936B20709 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=collabora.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:Message-Id:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=In9viWFWyzkOV6+ZYtIAMeKMtWpt3nmzG8NTxydB84M=; b=aLQBTcERAnVrmkYd1oogVTQTS OS/Zx4yII3qQ/Rwo3U8H+LCvMVIwwzJTKG2isH78HDWtOu3nPVHLztL6Aqqnjrzncg9/VhY/br30x A5FTHhvJisn1RsXrtylGH5jR2gH7C7/18lIxv/gHU73fc9H+HtwDjriCtmLH+FF/rxkhZBXaMR9OG pBSS/Yh/456ikJkNv242Ey2OkZCaIObQulYRRS3fuW6Huj/esVVAhH1rgeJzreDv0f7y246WSUElA bfnRQ9jEhD1mo107w6bUZgO0m/FRidSQaWos8df3HBg3TRvaxJUWSKxwF0yHdMFCvP/SxoNZNr+4L ZXFJR8I8w==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1k56oy-0001UD-NU; Mon, 10 Aug 2020 12:22:32 +0000 Received: from bhuna.collabora.co.uk ([2a00:1098:0:82:1000:25:2eeb:e3e3]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1k56os-0001SA-1f for linux-arm-kernel@lists.infradead.org; Mon, 10 Aug 2020 12:22:27 +0000 Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: gtucker) with ESMTPSA id 72289293506 From: Guillaume Tucker To: Russell King , Kukjin Kim , Krzysztof Kozlowski , Rob Herring Subject: [PATCH v2 2/4] ARM: l2c: fix prefetch bits init in L2X0_AUX_CTRL using DT values Date: Mon, 10 Aug 2020 13:22:06 +0100 Message-Id: <76f2f3ad5e77e356e0a5b99ceee1e774a2842c25.1597061474.git.guillaume.tucker@collabora.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <267a81e550a0b5d479c82b5908e2a2caa4c9c874.1597061474.git.guillaume.tucker@collabora.com> References: <267a81e550a0b5d479c82b5908e2a2caa4c9c874.1597061474.git.guillaume.tucker@collabora.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200810_082226_259074_B63EF558 X-CRM114-Status: GOOD ( 14.53 ) X-Spam-Score: -0.0 (/) X-Spam-Report: SpamAssassin version 3.4.4 on merlin.infradead.org summary: Content analysis details: (-0.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 SPF_PASS SPF: sender matches SPF record -0.0 SPF_HELO_PASS SPF: HELO matches SPF record 0.0 UNPARSEABLE_RELAY Informational: message has unparseable relay lines X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, linux-samsung-soc@vger.kernel.org, kernel@collabora.com, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org The L310_PREFETCH_CTRL register bits 28 and 29 to enable data and instruction prefetch respectively can also be accessed via the L2X0_AUX_CTRL register. They appear to be actually wired together in hardware between the registers. Changing them in the prefetch register only will get undone when restoring the aux control register later on. For this reason, set these bits in both registers during initialisation according to the devicetree property values. Fixes: ec3bd0e68a67 ("ARM: 8391/1: l2c: add options to overwrite prefetching behavior") Signed-off-by: Guillaume Tucker --- Notes: v2: tweak commit message to show this is a fix arch/arm/mm/cache-l2x0.c | 16 ++++++++++++---- 1 file changed, 12 insertions(+), 4 deletions(-) diff --git a/arch/arm/mm/cache-l2x0.c b/arch/arm/mm/cache-l2x0.c index 12c26eb88afb..43d91bfd2360 100644 --- a/arch/arm/mm/cache-l2x0.c +++ b/arch/arm/mm/cache-l2x0.c @@ -1249,20 +1249,28 @@ static void __init l2c310_of_parse(const struct device_node *np, ret = of_property_read_u32(np, "prefetch-data", &val); if (ret == 0) { - if (val) + if (val) { prefetch |= L310_PREFETCH_CTRL_DATA_PREFETCH; - else + *aux_val |= L310_PREFETCH_CTRL_DATA_PREFETCH; + } else { prefetch &= ~L310_PREFETCH_CTRL_DATA_PREFETCH; + *aux_val &= ~L310_PREFETCH_CTRL_DATA_PREFETCH; + } + *aux_mask &= ~L310_PREFETCH_CTRL_DATA_PREFETCH; } else if (ret != -EINVAL) { pr_err("L2C-310 OF prefetch-data property value is missing\n"); } ret = of_property_read_u32(np, "prefetch-instr", &val); if (ret == 0) { - if (val) + if (val) { prefetch |= L310_PREFETCH_CTRL_INSTR_PREFETCH; - else + *aux_val |= L310_PREFETCH_CTRL_INSTR_PREFETCH; + } else { prefetch &= ~L310_PREFETCH_CTRL_INSTR_PREFETCH; + *aux_val &= ~L310_PREFETCH_CTRL_INSTR_PREFETCH; + } + *aux_mask &= ~L310_PREFETCH_CTRL_INSTR_PREFETCH; } else if (ret != -EINVAL) { pr_err("L2C-310 OF prefetch-instr property value is missing\n"); } From patchwork Mon Aug 10 12:22:07 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Guillaume Tucker X-Patchwork-Id: 11707363 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 05918739 for ; Mon, 10 Aug 2020 12:22:45 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id D32492070B for ; 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Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1k56ov-0001TZ-IH; Mon, 10 Aug 2020 12:22:30 +0000 Received: from bhuna.collabora.co.uk ([2a00:1098:0:82:1000:25:2eeb:e3e3]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1k56os-0001SB-1C for linux-arm-kernel@lists.infradead.org; Mon, 10 Aug 2020 12:22:27 +0000 Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: gtucker) with ESMTPSA id C26AD293510 From: Guillaume Tucker To: Russell King , Kukjin Kim , Krzysztof Kozlowski , Rob Herring Subject: [PATCH v2 3/4] ARM: dts: exynos: add prefetch properties for L2C-310 cache Date: Mon, 10 Aug 2020 13:22:07 +0100 Message-Id: <30cb8edca2185241471ee1318b05288900652521.1597061474.git.guillaume.tucker@collabora.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <267a81e550a0b5d479c82b5908e2a2caa4c9c874.1597061474.git.guillaume.tucker@collabora.com> References: <267a81e550a0b5d479c82b5908e2a2caa4c9c874.1597061474.git.guillaume.tucker@collabora.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200810_082226_177546_EF351A62 X-CRM114-Status: GOOD ( 13.25 ) X-Spam-Score: -0.0 (/) X-Spam-Report: SpamAssassin version 3.4.4 on merlin.infradead.org summary: Content analysis details: (-0.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 SPF_PASS SPF: sender matches SPF record -0.0 SPF_HELO_PASS SPF: HELO matches SPF record 0.0 UNPARSEABLE_RELAY Informational: message has unparseable relay lines X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, linux-samsung-soc@vger.kernel.org, kernel@collabora.com, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Add the devicetree properties to enable instruction and data prefetch on exynos4210 and exynos4412 which use the L2C-310 cache. No other Exynos chip appears to be using this L2 cache hardware. This follows the default bits being set in the l2c_aux_val register for the Exynos platform, which can now be cleared as a result. Signed-off-by: Guillaume Tucker --- Notes: v2: split patch to include devicetree changes only arch/arm/boot/dts/exynos4210.dtsi | 2 ++ arch/arm/boot/dts/exynos4412.dtsi | 2 ++ 2 files changed, 4 insertions(+) diff --git a/arch/arm/boot/dts/exynos4210.dtsi b/arch/arm/boot/dts/exynos4210.dtsi index b4466232f0c1..7e0d253b26ef 100644 --- a/arch/arm/boot/dts/exynos4210.dtsi +++ b/arch/arm/boot/dts/exynos4210.dtsi @@ -102,6 +102,8 @@ reg = <0x10502000 0x1000>; cache-unified; cache-level = <2>; + prefetch-data = <1>; + prefetch-instr = <1>; arm,tag-latency = <2 2 1>; arm,data-latency = <2 2 1>; }; diff --git a/arch/arm/boot/dts/exynos4412.dtsi b/arch/arm/boot/dts/exynos4412.dtsi index 48868947373e..37efa247bf4d 100644 --- a/arch/arm/boot/dts/exynos4412.dtsi +++ b/arch/arm/boot/dts/exynos4412.dtsi @@ -218,6 +218,8 @@ reg = <0x10502000 0x1000>; cache-unified; cache-level = <2>; + prefetch-data = <1>; + prefetch-instr = <1>; arm,tag-latency = <2 2 1>; arm,data-latency = <3 2 1>; arm,double-linefill = <1>; 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Mon, 10 Aug 2020 12:22:35 +0000 Received: from bhuna.collabora.co.uk ([2a00:1098:0:82:1000:25:2eeb:e3e3]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1k56os-0001SD-2j for linux-arm-kernel@lists.infradead.org; Mon, 10 Aug 2020 12:22:28 +0000 Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: gtucker) with ESMTPSA id 19CC2293517 From: Guillaume Tucker To: Russell King , Kukjin Kim , Krzysztof Kozlowski , Rob Herring Subject: [PATCH v2 4/4] ARM: exynos: clear prefetch bits in default l2c_aux_val Date: Mon, 10 Aug 2020 13:22:08 +0100 Message-Id: X-Mailer: git-send-email 2.20.1 In-Reply-To: <267a81e550a0b5d479c82b5908e2a2caa4c9c874.1597061474.git.guillaume.tucker@collabora.com> References: <267a81e550a0b5d479c82b5908e2a2caa4c9c874.1597061474.git.guillaume.tucker@collabora.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200810_082226_324154_020D3760 X-CRM114-Status: GOOD ( 13.77 ) X-Spam-Score: -0.0 (/) X-Spam-Report: SpamAssassin version 3.4.4 on merlin.infradead.org summary: Content analysis details: (-0.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 SPF_PASS SPF: sender matches SPF record -0.0 SPF_HELO_PASS SPF: HELO matches SPF record 0.0 UNPARSEABLE_RELAY Informational: message has unparseable relay lines X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, linux-samsung-soc@vger.kernel.org, kernel@collabora.com, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Clear the L310_AUX_CTRL_DATA_PREFETCH and L310_AUX_CTRL_INSTR_PREFETCH bits in the l2c_aux_val defaults for Exynos since they can now be set using the standard l2c2x0 devicetree bindings. Signed-off-by: Guillaume Tucker --- Notes: v2: split patch to only clear exynos platform register bits arch/arm/mach-exynos/exynos.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm/mach-exynos/exynos.c b/arch/arm/mach-exynos/exynos.c index a96f3353a0c1..0e906cc3a48e 100644 --- a/arch/arm/mach-exynos/exynos.c +++ b/arch/arm/mach-exynos/exynos.c @@ -193,8 +193,8 @@ static void __init exynos_dt_fixup(void) } DT_MACHINE_START(EXYNOS_DT, "Samsung Exynos (Flattened Device Tree)") - .l2c_aux_val = 0x38400000, - .l2c_aux_mask = 0xc60fffff, + .l2c_aux_val = 0x08400000, + .l2c_aux_mask = 0xf60fffff, .smp = smp_ops(exynos_smp_ops), .map_io = exynos_init_io, .init_early = exynos_firmware_init,