From: Courtney Cavin <courtney.cavin@sonymobile.com> To: Stephen Boyd <sboyd@codeaurora.org> Cc: "linux-edac@vger.kernel.org" <linux-edac@vger.kernel.org>, "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>, "linux-arm-msm@vger.kernel.org" <linux-arm-msm@vger.kernel.org>, "linux-arm-kernel@lists.infradead.org" <linux-arm-kernel@lists.infradead.org>, Mark Rutland <mark.rutland@arm.com>, Russell King <linux@arm.linux.org.uk> Subject: Re: [PATCH v4 3/6] ARM: Add Krait L2 accessor functions Date: Wed, 8 Jan 2014 16:53:33 -0800 [thread overview] Message-ID: <20140109005332.GB23276@sonymobile.com> (raw) In-Reply-To: <1388434457-4194-4-git-send-email-sboyd@codeaurora.org> On Mon, Dec 30, 2013 at 09:14:14PM +0100, Stephen Boyd wrote: > Krait CPUs have a handful of L2 cache controller registers that > live behind a cp15 based indirection register. First you program > the indirection register (l2cpselr) to point the L2 'window' > register (l2cpdr) at what you want to read/write. Then you > read/write the 'window' register to do what you want. The > l2cpselr register is not banked per-cpu so we must lock around > accesses to it to prevent other CPUs from re-pointing l2cpdr > underneath us. > > Cc: Mark Rutland <mark.rutland@arm.com> > Cc: Russell King <linux@arm.linux.org.uk> > Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> > --- > arch/arm/common/Kconfig | 3 ++ > arch/arm/common/Makefile | 1 + > arch/arm/common/krait-l2-accessors.c | 58 +++++++++++++++++++++++++++++++ > arch/arm/include/asm/krait-l2-accessors.h | 20 +++++++++++ > 4 files changed, 82 insertions(+) > create mode 100644 arch/arm/common/krait-l2-accessors.c > create mode 100644 arch/arm/include/asm/krait-l2-accessors.h [...] > + > +extern void set_l2_indirect_reg(u32 addr, u32 val); > +extern u32 get_l2_indirect_reg(u32 addr); As these are Krait specific, please rename the functions to reflect this. -Courtney
WARNING: multiple messages have this Message-ID (diff)
From: courtney.cavin@sonymobile.com (Courtney Cavin) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH v4 3/6] ARM: Add Krait L2 accessor functions Date: Wed, 8 Jan 2014 16:53:33 -0800 [thread overview] Message-ID: <20140109005332.GB23276@sonymobile.com> (raw) In-Reply-To: <1388434457-4194-4-git-send-email-sboyd@codeaurora.org> On Mon, Dec 30, 2013 at 09:14:14PM +0100, Stephen Boyd wrote: > Krait CPUs have a handful of L2 cache controller registers that > live behind a cp15 based indirection register. First you program > the indirection register (l2cpselr) to point the L2 'window' > register (l2cpdr) at what you want to read/write. Then you > read/write the 'window' register to do what you want. The > l2cpselr register is not banked per-cpu so we must lock around > accesses to it to prevent other CPUs from re-pointing l2cpdr > underneath us. > > Cc: Mark Rutland <mark.rutland@arm.com> > Cc: Russell King <linux@arm.linux.org.uk> > Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> > --- > arch/arm/common/Kconfig | 3 ++ > arch/arm/common/Makefile | 1 + > arch/arm/common/krait-l2-accessors.c | 58 +++++++++++++++++++++++++++++++ > arch/arm/include/asm/krait-l2-accessors.h | 20 +++++++++++ > 4 files changed, 82 insertions(+) > create mode 100644 arch/arm/common/krait-l2-accessors.c > create mode 100644 arch/arm/include/asm/krait-l2-accessors.h [...] > + > +extern void set_l2_indirect_reg(u32 addr, u32 val); > +extern u32 get_l2_indirect_reg(u32 addr); As these are Krait specific, please rename the functions to reflect this. -Courtney
next prev parent reply other threads:[~2014-01-09 0:51 UTC|newest] Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top 2013-12-30 20:14 [PATCH v4 0/6] Krait L1/L2 EDAC driver Stephen Boyd 2013-12-30 20:14 ` Stephen Boyd 2013-12-30 20:14 ` Stephen Boyd 2013-12-30 20:14 ` [PATCH v4 1/6] edac: Don't try to cancel workqueue when it's never setup Stephen Boyd 2013-12-30 20:14 ` Stephen Boyd 2014-01-07 17:19 ` Borislav Petkov 2014-01-07 17:19 ` Borislav Petkov 2014-01-07 17:19 ` Borislav Petkov 2013-12-30 20:14 ` [PATCH v4 2/6] genirq: export percpu irq functions for module usage Stephen Boyd 2013-12-30 20:14 ` Stephen Boyd 2014-01-07 23:02 ` Borislav Petkov 2014-01-07 23:02 ` Borislav Petkov 2013-12-30 20:14 ` [PATCH v4 3/6] ARM: Add Krait L2 accessor functions Stephen Boyd 2013-12-30 20:14 ` Stephen Boyd 2014-01-07 23:07 ` Borislav Petkov 2014-01-07 23:07 ` Borislav Petkov 2014-01-07 23:09 ` Stephen Boyd 2014-01-07 23:09 ` Stephen Boyd 2014-01-09 0:53 ` Courtney Cavin [this message] 2014-01-09 0:53 ` Courtney Cavin 2014-01-09 0:53 ` Courtney Cavin 2014-01-09 1:54 ` Stephen Boyd 2014-01-09 1:54 ` Stephen Boyd 2014-01-09 1:54 ` Stephen Boyd 2014-01-09 11:03 ` Borislav Petkov 2014-01-09 11:03 ` Borislav Petkov 2014-01-09 11:03 ` Borislav Petkov [not found] ` <1388434457-4194-1-git-send-email-sboyd-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org> 2013-12-30 20:14 ` [PATCH v4 4/6] devicetree: bindings: Document Krait L1/L2 EDAC Stephen Boyd 2013-12-30 20:14 ` Stephen Boyd 2013-12-30 20:14 ` Stephen Boyd 2014-01-07 10:54 ` Lorenzo Pieralisi 2014-01-07 10:54 ` Lorenzo Pieralisi 2014-01-07 10:54 ` Lorenzo Pieralisi 2014-01-07 20:12 ` Stephen Boyd 2014-01-07 20:12 ` Stephen Boyd 2014-01-07 20:12 ` Stephen Boyd 2014-01-08 10:05 ` Lorenzo Pieralisi 2014-01-08 10:05 ` Lorenzo Pieralisi 2014-01-08 10:05 ` Lorenzo Pieralisi 2014-01-09 20:52 ` Stephen Boyd 2014-01-09 20:52 ` Stephen Boyd 2014-01-09 20:52 ` Stephen Boyd 2014-01-10 10:54 ` Lorenzo Pieralisi 2014-01-10 10:54 ` Lorenzo Pieralisi 2014-01-10 10:54 ` Lorenzo Pieralisi 2013-12-30 20:14 ` [PATCH v4 5/6] edac: Add support for Krait CPU cache error detection Stephen Boyd 2013-12-30 20:14 ` Stephen Boyd 2014-01-07 23:43 ` Borislav Petkov 2014-01-07 23:43 ` Borislav Petkov 2013-12-30 20:14 ` [PATCH v4 6/6] ARM: dts: msm: Add Krait CPU/L2 nodes Stephen Boyd 2013-12-30 20:14 ` Stephen Boyd 2014-01-04 10:19 ` [PATCH v4 0/6] Krait L1/L2 EDAC driver Borislav Petkov 2014-01-04 10:19 ` Borislav Petkov [not found] ` <20140104101901.GA4439-K5JNixvcfoxupOikMc4+xw@public.gmane.org> 2014-01-06 22:09 ` Stephen Boyd 2014-01-06 22:09 ` Stephen Boyd 2014-01-06 22:09 ` Stephen Boyd
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