From patchwork Tue Aug 26 14:17:55 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tomasz Figa X-Patchwork-Id: 4782561 Return-Path: X-Original-To: patchwork-linux-samsung-soc@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 4C23CC0338 for ; Tue, 26 Aug 2014 14:21:45 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 2C90920127 for ; Tue, 26 Aug 2014 14:21:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id F2374201DC for ; Tue, 26 Aug 2014 14:21:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758450AbaHZOUv (ORCPT ); Tue, 26 Aug 2014 10:20:51 -0400 Received: from mailout2.w1.samsung.com ([210.118.77.12]:23792 "EHLO mailout2.w1.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758463AbaHZOSK (ORCPT ); Tue, 26 Aug 2014 10:18:10 -0400 Received: from eucpsbgm2.samsung.com (unknown [203.254.199.245]) by mailout2.w1.samsung.com (Oracle Communications Messaging Server 7u4-24.01(7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTP id <0NAX006E83UZHU70@mailout2.w1.samsung.com>; Tue, 26 Aug 2014 15:20:59 +0100 (BST) X-AuditID: cbfec7f5-b7f776d000003e54-07-53fc971e6864 Received: from eusync2.samsung.com ( [203.254.199.212]) by eucpsbgm2.samsung.com (EUCPMTA) with SMTP id D5.0C.15956.E179CF35; Tue, 26 Aug 2014 15:18:06 +0100 (BST) Received: from AMDC1227.digital.local ([106.116.147.199]) by eusync2.samsung.com (Oracle Communications Messaging Server 7u4-23.01(7.0.4.23.0) 64bit (built Aug 10 2011)) with ESMTPA id <0NAX0026P3Q361B0@eusync2.samsung.com>; Tue, 26 Aug 2014 15:18:06 +0100 (BST) From: Tomasz Figa To: linux-samsung-soc@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Russell King - ARM Linux , Kukjin Kim , lauraa@codeaurora.org, linux-omap@vger.kernel.org, linus.walleij@linaro.org, santosh.shilimkar@ti.com, tony@atomide.com, drake@endlessm.com, Marek Szyprowski , Tomasz Figa , loeliger@gmail.com, Tomasz Figa Subject: [PATCH v4 2/7] ARM: l2c: Add interface to ask hypervisor to configure L2C Date: Tue, 26 Aug 2014 16:17:55 +0200 Message-id: <1409062680-15906-3-git-send-email-t.figa@samsung.com> X-Mailer: git-send-email 2.0.4 In-reply-to: <1409062680-15906-1-git-send-email-t.figa@samsung.com> References: <1409062680-15906-1-git-send-email-t.figa@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFtrILMWRmVeSWpSXmKPExsVy+t/xK7py0/8EG6ydr2fxaP5jZoveBVfZ LLZ3zmC3mPJnOZPFpsfXWC0u75rDZjF7ST+LxYzz+5gsbl/mtTi3fQuLxdojd9ktXvetYbZY P+M1i8WqXX8YLfZf8XLg92hp7mHz+PZ1EovH5b5eJo9F37M8ds66y+5x59oeNo/NS+o9+ras YvQ4fmM7k8fnTXIBXFFcNimpOZllqUX6dglcGQd/L2UqeMlX8aF5G1MD4wKeLkYODgkBE4kd 0/O7GDmBTDGJC/fWs3UxcnEICSxllJjw9R4LhNPHJHFl/Xd2kCo2ATWJzw2P2EBsEQFVic9t C8DizAIHmCXaVwaA2MICIRL7ZxxjAVnAAlQz47ExSJhXwEniYtcFdohlchKrNu5jArE5BZwl 9nzpYwaxhYBqnuzfxz6BkXcBI8MqRtHU0uSC4qT0XCO94sTc4tK8dL3k/NxNjJBg/rqDcekx q0OMAhyMSjy8D9J+BwuxJpYVV+YeYpTgYFYS4f2R9CdYiDclsbIqtSg/vqg0J7X4ECMTB6dU A+NSl3msy09tLn/p/Pr68fWtGl8ULrLtjjvt/F5T4E4ny/uGCUf9noZ949bedmvnvfpIe5nr E92KmGfPeLfnz5GoNUaGv2cva46q41GUFA/p47uopvkhzjLz1F4Bnybryyvfii1aU/53T+7N Ot+JTh0ckxOTFueVP5VbkN1xUUDu2OMtl99IZUxWYinOSDTUYi4qTgQAX6pZ3UQCAAA= Sender: linux-samsung-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org X-Spam-Status: No, score=-6.9 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 Because certain secure hypervisor do not allow writes to individual L2C registers, but rather expect set of parameters to be passed as argument to secure monitor calls, there is a need to provide an interface for the L2C driver to ask the firmware to configure the hardware according to specified parameters. This patch adds such. Signed-off-by: Tomasz Figa --- arch/arm/include/asm/outercache.h | 3 +++ arch/arm/mm/cache-l2x0.c | 6 ++++++ 2 files changed, 9 insertions(+) diff --git a/arch/arm/include/asm/outercache.h b/arch/arm/include/asm/outercache.h index 891a56b..563b92f 100644 --- a/arch/arm/include/asm/outercache.h +++ b/arch/arm/include/asm/outercache.h @@ -23,6 +23,8 @@ #include +struct l2x0_regs; + struct outer_cache_fns { void (*inv_range)(unsigned long, unsigned long); void (*clean_range)(unsigned long, unsigned long); @@ -36,6 +38,7 @@ struct outer_cache_fns { /* This is an ARM L2C thing */ void (*write_sec)(unsigned long, unsigned); + void (*configure)(const struct l2x0_regs *); }; extern struct outer_cache_fns outer_cache; diff --git a/arch/arm/mm/cache-l2x0.c b/arch/arm/mm/cache-l2x0.c index b073563..84c6c55 100644 --- a/arch/arm/mm/cache-l2x0.c +++ b/arch/arm/mm/cache-l2x0.c @@ -109,6 +109,11 @@ static inline void l2c_unlock(void __iomem *base, unsigned num) static void l2c_configure(void __iomem *base) { + if (outer_cache.configure) { + outer_cache.configure(&l2x0_saved_regs); + return; + } + if (l2x0_data->configure) l2x0_data->configure(base); @@ -909,6 +914,7 @@ static int __init __l2c_init(const struct l2c_init_data *data, fns = data->outer_cache; fns.write_sec = outer_cache.write_sec; + fns.configure = outer_cache.configure; if (data->fixup) data->fixup(l2x0_base, cache_id, &fns);