From: Tony Lindgren <tony@atomide.com> To: Marek Szyprowski <m.szyprowski@samsung.com> Cc: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Tomasz Figa <tomasz.figa@gmail.com>, Kyungmin Park <kyungmin.park@samsung.com>, linux-samsung-soc@vger.kernel.org, linux-omap@vger.kernel.org, Arnd Bergmann <arnd@arndb.de>, Olof Johansson <olof@lixom.net>, Russell King - ARM Linux <linux@arm.linux.org.uk>, Kukjin Kim <kgene.kim@samsung.com>, lauraa@codeaurora.org, linus.walleij@linaro.org, drake@endlessm.com, loeliger@gmail.com, Mark Rutland <mark.rutland@arm.com>, nm@ti.com, khilman@linaro.org Subject: Re: [PATCH v11 4/9] ARM: l2c: Add interface to ask hypervisor to configure L2C Date: Mon, 5 Jan 2015 08:24:38 -0800 [thread overview] Message-ID: <20150105162438.GD4081@atomide.com> (raw) In-Reply-To: <1420460348-20302-5-git-send-email-m.szyprowski@samsung.com> * Marek Szyprowski <m.szyprowski@samsung.com> [150105 04:22]: > From: Tomasz Figa <t.figa@samsung.com> > > 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 <t.figa@samsung.com> > Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Tony Lindgren <tony@atomide.com> > --- > 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 <linux/types.h> > > +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); > > -- > 1.9.2 >
WARNING: multiple messages have this Message-ID (diff)
From: tony@atomide.com (Tony Lindgren) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH v11 4/9] ARM: l2c: Add interface to ask hypervisor to configure L2C Date: Mon, 5 Jan 2015 08:24:38 -0800 [thread overview] Message-ID: <20150105162438.GD4081@atomide.com> (raw) In-Reply-To: <1420460348-20302-5-git-send-email-m.szyprowski@samsung.com> * Marek Szyprowski <m.szyprowski@samsung.com> [150105 04:22]: > From: Tomasz Figa <t.figa@samsung.com> > > 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 <t.figa@samsung.com> > Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Tony Lindgren <tony@atomide.com> > --- > 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 <linux/types.h> > > +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); > > -- > 1.9.2 >
next prev parent reply other threads:[~2015-01-05 16:28 UTC|newest] Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top 2015-01-05 12:18 [PATCH v11 0/9] Enable L2 cache support on Exynos4210/4x12 SoCs Marek Szyprowski 2015-01-05 12:18 ` Marek Szyprowski 2015-01-05 12:19 ` [PATCH v11 1/9] ARM: OMAP2+: use common l2cache initialization code Marek Szyprowski 2015-01-05 12:19 ` Marek Szyprowski 2015-01-05 16:21 ` Tony Lindgren 2015-01-05 16:21 ` Tony Lindgren 2015-01-05 20:25 ` Arnd Bergmann 2015-01-05 20:25 ` Arnd Bergmann 2015-01-07 14:37 ` Tomasz Figa 2015-01-07 14:37 ` Tomasz Figa 2015-01-07 14:37 ` Tomasz Figa 2015-01-05 12:19 ` [PATCH v11 2/9] ARM: l2c: use l2c_write_sec() for restoring latency and filter regs Marek Szyprowski 2015-01-05 12:19 ` Marek Szyprowski 2015-01-05 16:22 ` Tony Lindgren 2015-01-05 16:22 ` Tony Lindgren 2015-01-05 17:20 ` Nishanth Menon 2015-01-05 17:20 ` Nishanth Menon 2015-01-05 17:20 ` Nishanth Menon 2015-01-07 10:47 ` Marek Szyprowski 2015-01-07 10:47 ` Marek Szyprowski 2015-01-05 12:19 ` [PATCH v11 3/9] ARM: l2c: Refactor the driver to use commit-like interface Marek Szyprowski 2015-01-05 12:19 ` Marek Szyprowski 2015-01-05 16:23 ` Tony Lindgren 2015-01-05 16:23 ` Tony Lindgren 2015-01-05 17:22 ` Nishanth Menon 2015-01-05 17:22 ` Nishanth Menon 2015-01-05 17:22 ` Nishanth Menon 2015-01-07 11:28 ` Marek Szyprowski 2015-01-07 11:28 ` Marek Szyprowski 2015-01-05 12:19 ` [PATCH v11 4/9] ARM: l2c: Add interface to ask hypervisor to configure L2C Marek Szyprowski 2015-01-05 12:19 ` Marek Szyprowski 2015-01-05 12:19 ` Marek Szyprowski 2015-01-05 16:24 ` Tony Lindgren [this message] 2015-01-05 16:24 ` Tony Lindgren 2015-01-05 12:19 ` [PATCH v11 5/9] ARM: l2c: Get outer cache .write_sec callback from mach_desc only if not NULL Marek Szyprowski 2015-01-05 12:19 ` Marek Szyprowski 2015-01-05 16:25 ` Tony Lindgren 2015-01-05 16:25 ` Tony Lindgren 2015-01-05 12:19 ` [PATCH v11 6/9] ARM: l2c: Add support for overriding prefetch settings Marek Szyprowski 2015-01-05 12:19 ` Marek Szyprowski 2015-01-05 16:25 ` Tony Lindgren 2015-01-05 16:25 ` Tony Lindgren 2015-01-05 12:19 ` [PATCH v11 7/9] ARM: EXYNOS: Add .write_sec outer cache callback for L2C-310 Marek Szyprowski 2015-01-05 12:19 ` Marek Szyprowski 2015-01-05 12:19 ` [PATCH v11 8/9] ARM: EXYNOS: Add support for non-secure L2X0 resume Marek Szyprowski 2015-01-05 12:19 ` Marek Szyprowski 2015-01-05 12:19 ` [PATCH v11 9/9] ARM: dts: exynos4: Add nodes for L2 cache controller Marek Szyprowski 2015-01-05 12:19 ` Marek Szyprowski 2015-01-05 17:00 ` [PATCH v11 0/9] Enable L2 cache support on Exynos4210/4x12 SoCs Nishanth Menon 2015-01-05 17:00 ` Nishanth Menon 2015-01-05 17:00 ` Nishanth Menon
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