From patchwork Mon Jan 5 12:19:03 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marek Szyprowski X-Patchwork-Id: 5567761 Return-Path: X-Original-To: patchwork-linux-samsung-soc@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 99D119F2ED for ; Mon, 5 Jan 2015 12:22:21 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id C47F920172 for ; Mon, 5 Jan 2015 12:22:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DBC712015A for ; Mon, 5 Jan 2015 12:22:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753969AbbAEMWA (ORCPT ); Mon, 5 Jan 2015 07:22:00 -0500 Received: from mailout1.w1.samsung.com ([210.118.77.11]:44306 "EHLO mailout1.w1.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753324AbbAEMTV (ORCPT ); Mon, 5 Jan 2015 07:19:21 -0500 Received: from eucpsbgm2.samsung.com (unknown [203.254.199.245]) by mailout1.w1.samsung.com (Oracle Communications Messaging Server 7u4-24.01(7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTP id <0NHP00JCNEF39C10@mailout1.w1.samsung.com>; Mon, 05 Jan 2015 12:23:27 +0000 (GMT) X-AuditID: cbfec7f5-b7fc86d0000066b7-8f-54aa81481a9d Received: from eusync2.samsung.com ( [203.254.199.212]) by eucpsbgm2.samsung.com (EUCPMTA) with SMTP id 69.E4.26295.8418AA45; Mon, 05 Jan 2015 12:19:20 +0000 (GMT) Received: from amdc1339.digital.local ([106.116.147.30]) by eusync2.samsung.com (Oracle Communications Messaging Server 7u4-23.01 (7.0.4.23.0) 64bit (built Aug 10 2011)) with ESMTPA id <0NHP00AYXE7XH550@eusync2.samsung.com>; Mon, 05 Jan 2015 12:19:19 +0000 (GMT) From: Marek Szyprowski To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: Marek Szyprowski , Tomasz Figa , Kyungmin Park , linux-samsung-soc@vger.kernel.org, linux-omap@vger.kernel.org, Arnd Bergmann , Olof Johansson , Russell King - ARM Linux , Kukjin Kim , lauraa@codeaurora.org, linus.walleij@linaro.org, tony@atomide.com, drake@endlessm.com, loeliger@gmail.com, Mark Rutland , nm@ti.com, khilman@linaro.org Subject: [PATCH v11 4/9] ARM: l2c: Add interface to ask hypervisor to configure L2C Date: Mon, 05 Jan 2015 13:19:03 +0100 Message-id: <1420460348-20302-5-git-send-email-m.szyprowski@samsung.com> X-Mailer: git-send-email 1.9.2 In-reply-to: <1420460348-20302-1-git-send-email-m.szyprowski@samsung.com> References: <1420460348-20302-1-git-send-email-m.szyprowski@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrGLMWRmVeSWpSXmKPExsVy+t/xK7oejatCDJYv07L4O+kYu8Wj+Y+Z LXoXXGWz+Hp4BaPF2aY37BbbO2ewW0z5s5zJYtPja6wWl3fNYbOYvaSfxWLG+X1MFrcv81qc 276FxWLtkbvsFkuvX2SyePPjLJPFqeuf2SxW7frDaLH/ipeDsMeaeWsYPVqae9g8fv+axOjx 7eskFo/Lfb1MHou+Z3nsnHWX3ePOtT1sHpuX1HtcOdHE6tG3ZRWjx/Eb25k8Pm+SC+CN4rJJ Sc3JLEst0rdL4MpY8nk1U8Fj/opNM66wNjD28XYxcnJICJhITFjTyQhhi0lcuLeerYuRi0NI YCmjxOEtD5kgnD4mia1Tr7CCVLEJGEp0ve1iA7FFBNwk/q07BNbBLDCNRWLTkfPMIAlhgVCJ GRtPA3VzcLAIqEqcXsIJEuYV8JD413aTBWKbnMT/lyuYQGxOAU+JpXv3sYPYQkA1Z26tZZ/A yLuAkWEVo2hqaXJBcVJ6rpFecWJucWleul5yfu4mRkhcfN3BuPSY1SFGAQ5GJR5ejxMrQ4RY E8uKK3MPMUpwMCuJ8L5KXxUixJuSWFmVWpQfX1Sak1p8iJGJg1OqgdHt7Yke7S49/gj9M8/u z73D3MT6u5XVtHjrUUbuhrn1/cF3r+75weRz13l5bmnxsfVrLr554Ou3/6zs/Kl12bdXLGPn qi07UC0/ZYG95bkDr7mP5Mk2NCtduLq+nzmZf2ZwQ9wBb09V0yf5kUtXJj0r+jvHZ9ubzgXL VwZ83e/4dDGLD9eGO9+VWIozEg21mIuKEwEghAkkaQIAAA== 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, 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 From: Tomasz Figa 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 Signed-off-by: Marek Szyprowski Acked-by: Tony Lindgren --- 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 891a56b35bcf..563b92fc2f41 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 f9013320c8ce..dcde6086a228 100644 --- a/arch/arm/mm/cache-l2x0.c +++ b/arch/arm/mm/cache-l2x0.c @@ -110,6 +110,11 @@ 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); @@ -910,6 +915,7 @@ 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);