From patchwork Thu Nov 13 13:18:09 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marek Szyprowski X-Patchwork-Id: 5296691 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 DED579F2F1 for ; Thu, 13 Nov 2014 13:18:32 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id DE6C4201FA for ; Thu, 13 Nov 2014 13:18:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C16A2201C7 for ; Thu, 13 Nov 2014 13:18:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932939AbaKMNS1 (ORCPT ); Thu, 13 Nov 2014 08:18:27 -0500 Received: from mailout4.w1.samsung.com ([210.118.77.14]:27097 "EHLO mailout4.w1.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932773AbaKMNSY (ORCPT ); Thu, 13 Nov 2014 08:18:24 -0500 Received: from eucpsbgm1.samsung.com (unknown [203.254.199.244]) by mailout4.w1.samsung.com (Oracle Communications Messaging Server 7u4-24.01(7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTP id <0NEZ00MH9BR76X40@mailout4.w1.samsung.com>; Thu, 13 Nov 2014 13:21:07 +0000 (GMT) X-AuditID: cbfec7f4-b7f6c6d00000120b-c3-5464af9d9c58 Received: from eusync1.samsung.com ( [203.254.199.211]) by eucpsbgm1.samsung.com (EUCPMTA) with SMTP id 1F.C4.04619.D9FA4645; Thu, 13 Nov 2014 13:18:21 +0000 (GMT) Received: from amdc1339.digital.local ([106.116.147.30]) by eusync1.samsung.com (Oracle Communications Messaging Server 7u4-23.01 (7.0.4.23.0) 64bit (built Aug 10 2011)) with ESMTPA id <0NEZ00I3CBMFKS20@eusync1.samsung.com>; Thu, 13 Nov 2014 13:18:21 +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, Arnd Bergmann , Olof Johansson , Russell King - ARM Linux , Kukjin Kim , lauraa@codeaurora.org, linux-omap@vger.kernel.org, linus.walleij@linaro.org, tony@atomide.com, drake@endlessm.com, loeliger@gmail.com, Mark Rutland Subject: [PATCH v8 2/7] ARM: l2c: Add interface to ask hypervisor to configure L2C Date: Thu, 13 Nov 2014 14:18:09 +0100 Message-id: <1415884694-5868-3-git-send-email-m.szyprowski@samsung.com> X-Mailer: git-send-email 1.9.2 In-reply-to: <1415884694-5868-1-git-send-email-m.szyprowski@samsung.com> References: <1415884694-5868-1-git-send-email-m.szyprowski@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrBLMWRmVeSWpSXmKPExsVy+t/xy7pz16eEGHw4pGnxd9IxdotH8x8z W/QuuMpmcbbpDbvF9s4Z7BZT/ixnstj0+BqrxeVdc9gsZi/pZ7GYcX4fk8Xty7wW57ZvYbFY e+Quu8XS6xeZLE5d/8xmsWrXH0aL/Ve8HAQ91sxbw+jR0tzD5vH71yRGj29fJ7F4XO7rZfJY 9D3LY+esu+wed67tYfPYvKTe48qJJlaPvi2rGD0+b5IL4InisklJzcksSy3St0vgypg7tZ2l 4DF/xfTtE5gbGPt4uxg5OSQETCR2fjnPBGGLSVy4t56ti5GLQ0hgKaPEi9N32SGcPiaJRWuX sINUsQkYSnS97WIDsUUE3CT+rTsE1sEs8JlZ4tKjNawgCWGBEIkVp5aAFbEIqEo0HZ8BFucV cJc4t/QxK8Q6OYn/L1eAreYU8JD4sv4PWFwIqKZ912HGCYy8CxgZVjGKppYmFxQnpeca6hUn 5haX5qXrJefnbmKEhP6XHYyLj1kdYhTgYFTi4f3AnRIixJpYVlyZe4hRgoNZSYT3zUqgEG9K YmVValF+fFFpTmrxIUYmDk6pBsZUr6q5M/1ZNZW/pvznmPaH8e7m66d/Jtz8GhR0Ynml3pXp 59xLpnVxqq6dU+5uMvUs10XHxP7Hj5b8Y+jQdpv5Sj9rWkHU5Ibp+/iC+P9uUL/y5ZLclWKH BeeM/35e9Uo5Z1+PILOEmahIt12qtcLnDTl3cxyWZm3LU2k/IxfDVKwettVI8qYSS3FGoqEW c1FxIgDd7nfxWwIAAA== 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=-7.9 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 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);