From patchwork Tue Dec 23 10:48:31 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marek Szyprowski X-Patchwork-Id: 5532611 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 [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 7FD119F357 for ; Tue, 23 Dec 2014 10:52:00 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id B98F62012D for ; Tue, 23 Dec 2014 10:51:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BF9CB201B9 for ; Tue, 23 Dec 2014 10:51:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755927AbaLWKsu (ORCPT ); Tue, 23 Dec 2014 05:48:50 -0500 Received: from mailout1.w1.samsung.com ([210.118.77.11]:61112 "EHLO mailout1.w1.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755914AbaLWKss (ORCPT ); Tue, 23 Dec 2014 05:48:48 -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 <0NH100I8L7K67P00@mailout1.w1.samsung.com>; Tue, 23 Dec 2014 10:52:55 +0000 (GMT) X-AuditID: cbfec7f5-b7fc86d0000066b7-7c-5499488fedcc Received: from eusync4.samsung.com ( [203.254.199.214]) by eucpsbgm2.samsung.com (EUCPMTA) with SMTP id 45.B8.26295.F8849945; Tue, 23 Dec 2014 10:48:47 +0000 (GMT) Received: from amdc1339.digital.local ([106.116.147.30]) by eusync4.samsung.com (Oracle Communications Messaging Server 7u4-24.01 (7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTPA id <0NH100J7C7D1M650@eusync4.samsung.com>; Tue, 23 Dec 2014 10:48:46 +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 v10 3/8] ARM: l2c: Add interface to ask hypervisor to configure L2C Date: Tue, 23 Dec 2014 11:48:31 +0100 Message-id: <1419331716-8972-4-git-send-email-m.szyprowski@samsung.com> X-Mailer: git-send-email 1.9.2 In-reply-to: <1419331716-8972-1-git-send-email-m.szyprowski@samsung.com> References: <1419331716-8972-1-git-send-email-m.szyprowski@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrKLMWRmVeSWpSXmKPExsVy+t/xa7r9HjNDDK5NY7H4O+kYu8Wj+Y+Z LXoXXGWz+Hp4BaPF2aY37BbbO2ewW0z5s5zJYtPja6wWl3fNYbOYvaSfxWLG+X1MFrcv81qc 276FxWLtkbvsFkuvX2SyePPjLJPFqeuf2SxW7frDaLH/ipeDsMeaeWsYPVqae9g8fv+axOjx 7eskFo/Lfb1MHou+Z3nsnHWX3ePOtT1sHpuX1HtcOdHE6tG3ZRWjx/Eb25k8Pm+SC+CN4rJJ Sc3JLEst0rdL4MqYO7WdpeAxf8X07ROYGxj7eLsYOTkkBEwk2levYYWwxSQu3FvPBmILCSxl lLi0QriLkQvI7mOSaL8+hRkkwSZgKNH1tgusSETATeLfukNsIEXMAtNYJDYdOQ9WJCwQKvH9 /Ur2LkYODhYBVYkVV0pBwrwC7hJnXzSwQCyTk/j/cgUTiM0p4CFxctFmJojF7hLbnh5kmcDI u4CRYRWjaGppckFxUnqukV5xYm5xaV66XnJ+7iZGSFR83cG49JjVIUYBDkYlHt6L32aECLEm lhVX5h5ilOBgVhLhfSk+M0SINyWxsiq1KD++qDQntfgQIxMHp1QD48E51YfmaXQ9DJ4a+vPC Xj2LhVffnNdgK9++ceYjHrXr72t8zR+wbEnY53LwmvLbErl3wsIvtrOKO3DXzSv9O1fo/sGQ grpvyetE7yb7Xj6csVbDnuGW3vR77oct7D71XOC+sJzjgt79O/OWOcY/3HiGsZPn26qyqqx7 Kz+fefW179DCkIImoVQlluKMREMt5qLiRABs+3kfaAIAAA== 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 --- 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 e5948c5adaa7..d214be207517 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);