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 3/9] ARM: l2c: Refactor the driver to use commit-like interface
Date: Mon, 5 Jan 2015 08:23:34 -0800 [thread overview]
Message-ID: <20150105162332.GC4081@atomide.com> (raw)
In-Reply-To: <1420460348-20302-4-git-send-email-m.szyprowski@samsung.com>
* Marek Szyprowski <m.szyprowski@samsung.com> [150105 04:22]:
> From: Tomasz Figa <t.figa@samsung.com>
>
> Certain implementations of secure hypervisors (namely the one found on
> Samsung Exynos-based boards) do not provide access to individual L2C
> registers. This makes the .write_sec()-based interface insufficient and
> provoking ugly hacks.
>
> This patch is first step to make the driver not rely on availability of
> writes to individual registers. This is achieved by refactoring the
> driver to use a commit-like operation scheme: all register values are
> prepared first and stored in an instance of l2x0_regs struct and then a
> single callback is responsible to flush those values to the hardware.
>
> Signed-off-by: Tomasz Figa <t.figa@samsung.com>
> [mszyprow: rebased onto 'ARM: l2c: use l2c_write_sec() for restoring
> latency and filter regs' patch]
> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
This version seems to boot just fine on am437x here:
Acked-by: Tony Lindgren <tony@atomide.com>
WARNING: multiple messages have this Message-ID (diff)
From: tony@atomide.com (Tony Lindgren)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v11 3/9] ARM: l2c: Refactor the driver to use commit-like interface
Date: Mon, 5 Jan 2015 08:23:34 -0800 [thread overview]
Message-ID: <20150105162332.GC4081@atomide.com> (raw)
In-Reply-To: <1420460348-20302-4-git-send-email-m.szyprowski@samsung.com>
* Marek Szyprowski <m.szyprowski@samsung.com> [150105 04:22]:
> From: Tomasz Figa <t.figa@samsung.com>
>
> Certain implementations of secure hypervisors (namely the one found on
> Samsung Exynos-based boards) do not provide access to individual L2C
> registers. This makes the .write_sec()-based interface insufficient and
> provoking ugly hacks.
>
> This patch is first step to make the driver not rely on availability of
> writes to individual registers. This is achieved by refactoring the
> driver to use a commit-like operation scheme: all register values are
> prepared first and stored in an instance of l2x0_regs struct and then a
> single callback is responsible to flush those values to the hardware.
>
> Signed-off-by: Tomasz Figa <t.figa@samsung.com>
> [mszyprow: rebased onto 'ARM: l2c: use l2c_write_sec() for restoring
> latency and filter regs' patch]
> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
This version seems to boot just fine on am437x here:
Acked-by: Tony Lindgren <tony@atomide.com>
next prev parent reply other threads:[~2015-01-05 16:23 UTC|newest]
Thread overview: 50+ 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
2015-01-05 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 [this message]
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
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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