Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934859AbaGQQl6 (ORCPT ); Thu, 17 Jul 2014 12:41:58 -0400 Received: from mailout4.w1.samsung.com ([210.118.77.14]:56771 "EHLO mailout4.w1.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932908AbaGQQjx (ORCPT ); Thu, 17 Jul 2014 12:39:53 -0400 X-AuditID: cbfec7f4-b7fac6d000006cfe-c1-53c7fc55d499 From: Tomasz Figa To: linux-samsung-soc@vger.kernel.org Cc: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Kukjin Kim , Russell King - ARM Linux , 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 v3 2/7] ARM: l2c: Add interface to ask hypervisor to configure L2C Date: Thu, 17 Jul 2014 18:38:57 +0200 Message-id: <1405615142-21426-3-git-send-email-t.figa@samsung.com> X-Mailer: git-send-email 1.9.3 In-reply-to: <1405615142-21426-1-git-send-email-t.figa@samsung.com> References: <1405615142-21426-1-git-send-email-t.figa@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFtrMLMWRmVeSWpSXmKPExsVy+t/xq7qhf44HG+w/ZG7xaP5jZoveBVfZ LLZ3zmC3mPJnOZPFpsfXWC0u75rDZjF7ST+LxYzz+5gsbl/mtTi3fQuLxdojd9ktXvetYbZY P+M1i8WqXX8YLfZf8XLg92hp7mHz+PZ1EovH5b5eJo9F37M8ds66y+5x59oeNo/NS+o9+ras YvQ4fmM7k8fnTXIBXFFcNimpOZllqUX6dglcGaevrWMsuM9T0fIwuIHxKFcXIyeHhICJxPZb v1kgbDGJC/fWs3UxcnEICSxllOh/doEFwuljkvj27Q0zSBWbgJrE54ZHbCC2iICqxOe2Bewg RcwCB5glLmx6ADZKWCBE4uzfM4wgNgtQUeOpXrBmXgEnieUds5kh1slJ9G6DGMop4Cwxd/9j sKFCQDVb2hYwTWDkXcDIsIpRNLU0uaA4KT3XUK84Mbe4NC9dLzk/dxMjJKC/7GBcfMzqEKMA B6MSD2/n52PBQqyJZcWVuYcYJTiYlUR4s+8fDxbiTUmsrEotyo8vKs1JLT7EyMTBKdXA6M/U c1sh14fhz+Zdn8O3fWJZcaKVZcHFX2F6S6YGhM3xDGK09W7u/qsWysc5cfHezAI+PZ+NCdWP z8b9mrcj9VMh/1vu8Merlh2dp7qH4+4Wh10Pu9m+7I32+n2T8bWJ6ZIHp+6wl/47/EllzxXN Ak1n7eeHJ89xjF9UZW+7q+luuHhpifjhG0osxRmJhlrMRcWJABIFMXdGAgAA Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 | 5 +++++ 2 files changed, 8 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 385c047..21a625a0 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); -- 1.9.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/