From patchwork Wed Apr 3 13:09:23 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: chenhui zhao X-Patchwork-Id: 233459 X-Patchwork-Delegate: galak@kernel.crashing.org Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from ozlabs.org (localhost [IPv6:::1]) by ozlabs.org (Postfix) with ESMTP id 8728C2C15DF for ; Thu, 4 Apr 2013 00:16:37 +1100 (EST) Received: from co1outboundpool.messaging.microsoft.com (co1ehsobe002.messaging.microsoft.com [216.32.180.185]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (Client CN "mail.global.frontbridge.com", Issuer "Microsoft Secure Server Authority" (not verified)) by ozlabs.org (Postfix) with ESMTPS id BDFEC2C0113 for ; Thu, 4 Apr 2013 00:08:50 +1100 (EST) Received: from mail177-co1-R.bigfish.com (10.243.78.231) by CO1EHSOBE026.bigfish.com (10.243.66.89) with Microsoft SMTP Server id 14.1.225.23; Wed, 3 Apr 2013 13:08:41 +0000 Received: from mail177-co1 (localhost [127.0.0.1]) by mail177-co1-R.bigfish.com (Postfix) with ESMTP id 4499F980270 for ; Wed, 3 Apr 2013 13:08:41 +0000 (UTC) X-Forefront-Antispam-Report: CIP:70.37.183.190; KIP:(null); UIP:(null); IPV:NLI; H:mail.freescale.net; RD:none; EFVD:NLI X-SpamScore: 0 X-BigFish: VS0(zzzz1f42h1fc6h1ee6h1de0h1202h1e76h1d1ah1d2ahzz8275bhz2dh2a8h668h839hd24he5bhf0ah1288h12a5h12a9h12bdh12e5h1354h137ah139eh13b6h1441h1504h1537h162dh1631h1758h1898h18e1h1946h19b5h1ad9h1b0ah1155h) Received: from mail177-co1 (localhost.localdomain [127.0.0.1]) by mail177-co1 (MessageSwitch) id 1364994519213289_9495; Wed, 3 Apr 2013 13:08:39 +0000 (UTC) Received: from CO1EHSMHS024.bigfish.com (unknown [10.243.78.251]) by mail177-co1.bigfish.com (Postfix) with ESMTP id 2BF0B900095 for ; Wed, 3 Apr 2013 13:08:39 +0000 (UTC) Received: from mail.freescale.net (70.37.183.190) by CO1EHSMHS024.bigfish.com (10.243.66.34) with Microsoft SMTP Server (TLS) id 14.1.225.23; Wed, 3 Apr 2013 13:08:38 +0000 Received: from tx30smr01.am.freescale.net (10.81.153.31) by 039-SN1MMR1-001.039d.mgd.msft.net (10.84.1.13) with Microsoft SMTP Server (TLS) id 14.2.328.11; Wed, 3 Apr 2013 13:08:37 +0000 Received: from localhost.localdomain ([10.193.20.174]) by tx30smr01.am.freescale.net (8.14.3/8.14.0) with ESMTP id r33D87lj019893; Wed, 3 Apr 2013 06:08:35 -0700 From: Zhao Chenhui To: Subject: [PATCH 15/17] powerpc/85xx: add support for e6500 L1 cache operation Date: Wed, 3 Apr 2013 21:09:23 +0800 Message-ID: <1364994565-16010-15-git-send-email-chenhui.zhao@freescale.com> X-Mailer: git-send-email 1.7.3 In-Reply-To: <1364994565-16010-1-git-send-email-chenhui.zhao@freescale.com> References: <1364994565-16010-1-git-send-email-chenhui.zhao@freescale.com> MIME-Version: 1.0 X-OriginatorOrg: freescale.com X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" From: Chen-Hui Zhao The L1 Data Cache of e6500 contains no modified data, no flush is required. Signed-off-by: Zhao Chenhui Signed-off-by: Li Yang Signed-off-by: Andy Fleming --- arch/powerpc/kernel/fsl_booke_cache.S | 11 ++++++++++- 1 files changed, 10 insertions(+), 1 deletions(-) diff --git a/arch/powerpc/kernel/fsl_booke_cache.S b/arch/powerpc/kernel/fsl_booke_cache.S index 232c47b..24a52bb 100644 --- a/arch/powerpc/kernel/fsl_booke_cache.S +++ b/arch/powerpc/kernel/fsl_booke_cache.S @@ -65,13 +65,22 @@ _GLOBAL(flush_dcache_L1) blr +#define PVR_E6500 0x8040 + /* Flush L1 d-cache, invalidate and disable d-cache and i-cache */ _GLOBAL(__flush_disable_L1) +/* L1 Data Cache of e6500 contains no modified data, no flush is required */ + mfspr r3, SPRN_PVR + rlwinm r4, r3, 16, 0xffff + lis r5, 0 + ori r5, r5, PVR_E6500@l + cmpw r4, r5 + beq 2f mflr r10 bl flush_dcache_L1 /* Flush L1 d-cache */ mtlr r10 - msync +2: msync mfspr r4, SPRN_L1CSR0 /* Invalidate and disable d-cache */ li r5, 2 rlwimi r4, r5, 0, 3