From: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
To: Stefan Agner <stefan@agner.ch>
Cc: mark.rutland@arm.com, boris.brezillon@free-electrons.com,
aaron@tastycactus.com, pawel.moll@arm.com, marb@ixxat.de,
ijc+devicetree@hellion.org.uk, linux-kernel@vger.kernel.org,
shawn.guo@linaro.org, devicetree@vger.kernel.org,
robh+dt@kernel.org, linux-mtd@lists.infradead.org,
kernel@pengutronix.de, galak@codeaurora.org,
computersforpeace@gmail.com, dwmw2@infradead.org,
linux-arm-kernel@lists.infradead.org, bpringlemeir@nbsps.com
Subject: Re: [PATCH v4 1/6] mtd: nand: vf610_nfc: Freescale NFC for VF610, MPC5125 and others
Date: Tue, 9 Jun 2015 22:07:51 +0200 [thread overview]
Message-ID: <20150609200751.GC5720@breakpoint.cc> (raw)
In-Reply-To: <b3b09b4b8c97cbfc88fa0d5fdc5e40cd@agner.ch>
On 2015-06-03 17:05:16 [+0200], Stefan Agner wrote:
> As Boris guessed correctly, the reason I used the raw variant was due to
> performance improvements due to the barrier. However, I will use
yeah, do you have any numbers by chance?
> {read|write}l_relaxed instead, which should offer endian abstraction
> while not having the performance penalty due to extensive barriers...
well, even those
|$ git grep readl_relaxed arch/powerpc/
|arch/powerpc/include/asm/io.h:#define readl_relaxed(addr) readl(addr)
have the endian swap. So an abstraction like you provided earlier
would be nice :)
> --
> Stefan
Sebastian
WARNING: multiple messages have this Message-ID (diff)
From: sebastian@breakpoint.cc (Sebastian Andrzej Siewior)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v4 1/6] mtd: nand: vf610_nfc: Freescale NFC for VF610, MPC5125 and others
Date: Tue, 9 Jun 2015 22:07:51 +0200 [thread overview]
Message-ID: <20150609200751.GC5720@breakpoint.cc> (raw)
In-Reply-To: <b3b09b4b8c97cbfc88fa0d5fdc5e40cd@agner.ch>
On 2015-06-03 17:05:16 [+0200], Stefan Agner wrote:
> As Boris guessed correctly, the reason I used the raw variant was due to
> performance improvements due to the barrier. However, I will use
yeah, do you have any numbers by chance?
> {read|write}l_relaxed instead, which should offer endian abstraction
> while not having the performance penalty due to extensive barriers...
well, even those
|$ git grep readl_relaxed arch/powerpc/
|arch/powerpc/include/asm/io.h:#define readl_relaxed(addr) readl(addr)
have the endian swap. So an abstraction like you provided earlier
would be nice :)
> --
> Stefan
Sebastian
WARNING: multiple messages have this Message-ID (diff)
From: Sebastian Andrzej Siewior <sebastian-E0PNVn5OA6ohrxcnuTQ+TQ@public.gmane.org>
To: Stefan Agner <stefan-XLVq0VzYD2Y@public.gmane.org>
Cc: dwmw2-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org,
computersforpeace-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org,
mark.rutland-5wv7dgnIgG8@public.gmane.org,
boris.brezillon-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org,
aaron-yuhzfaV+M/Wz3Dx2OeFgIA@public.gmane.org,
marb-Z4QKGCRq86k@public.gmane.org,
pawel.moll-5wv7dgnIgG8@public.gmane.org,
ijc+devicetree-KcIKpvwj1kUDXYZnReoRVg@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
linux-mtd-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
kernel-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org,
galak-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org,
shawn.guo-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
bpringlemeir-ygJ1pmMJ17cAvxtiuMwx3w@public.gmane.org
Subject: Re: [PATCH v4 1/6] mtd: nand: vf610_nfc: Freescale NFC for VF610, MPC5125 and others
Date: Tue, 9 Jun 2015 22:07:51 +0200 [thread overview]
Message-ID: <20150609200751.GC5720@breakpoint.cc> (raw)
In-Reply-To: <b3b09b4b8c97cbfc88fa0d5fdc5e40cd-XLVq0VzYD2Y@public.gmane.org>
On 2015-06-03 17:05:16 [+0200], Stefan Agner wrote:
> As Boris guessed correctly, the reason I used the raw variant was due to
> performance improvements due to the barrier. However, I will use
yeah, do you have any numbers by chance?
> {read|write}l_relaxed instead, which should offer endian abstraction
> while not having the performance penalty due to extensive barriers...
well, even those
|$ git grep readl_relaxed arch/powerpc/
|arch/powerpc/include/asm/io.h:#define readl_relaxed(addr) readl(addr)
have the endian swap. So an abstraction like you provided earlier
would be nice :)
> --
> Stefan
Sebastian
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WARNING: multiple messages have this Message-ID (diff)
From: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
To: Stefan Agner <stefan@agner.ch>
Cc: dwmw2@infradead.org, computersforpeace@gmail.com,
mark.rutland@arm.com, boris.brezillon@free-electrons.com,
aaron@tastycactus.com, marb@ixxat.de, pawel.moll@arm.com,
ijc+devicetree@hellion.org.uk, linux-kernel@vger.kernel.org,
devicetree@vger.kernel.org, robh+dt@kernel.org,
linux-mtd@lists.infradead.org, kernel@pengutronix.de,
galak@codeaurora.org, shawn.guo@linaro.org,
linux-arm-kernel@lists.infradead.org, bpringlemeir@nbsps.com
Subject: Re: [PATCH v4 1/6] mtd: nand: vf610_nfc: Freescale NFC for VF610, MPC5125 and others
Date: Tue, 9 Jun 2015 22:07:51 +0200 [thread overview]
Message-ID: <20150609200751.GC5720@breakpoint.cc> (raw)
In-Reply-To: <b3b09b4b8c97cbfc88fa0d5fdc5e40cd@agner.ch>
On 2015-06-03 17:05:16 [+0200], Stefan Agner wrote:
> As Boris guessed correctly, the reason I used the raw variant was due to
> performance improvements due to the barrier. However, I will use
yeah, do you have any numbers by chance?
> {read|write}l_relaxed instead, which should offer endian abstraction
> while not having the performance penalty due to extensive barriers...
well, even those
|$ git grep readl_relaxed arch/powerpc/
|arch/powerpc/include/asm/io.h:#define readl_relaxed(addr) readl(addr)
have the endian swap. So an abstraction like you provided earlier
would be nice :)
> --
> Stefan
Sebastian
next prev parent reply other threads:[~2015-06-09 20:07 UTC|newest]
Thread overview: 74+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-25 16:28 [PATCH v4 0/6] mtd: nand: vf610_nfc: Freescale NFC for VF610 Stefan Agner
2015-03-25 16:28 ` Stefan Agner
2015-03-25 16:28 ` Stefan Agner
2015-03-25 16:28 ` [PATCH v4 1/6] mtd: nand: vf610_nfc: Freescale NFC for VF610, MPC5125 and others Stefan Agner
2015-03-25 16:28 ` Stefan Agner
2015-03-25 16:28 ` Stefan Agner
2015-06-02 1:32 ` Brian Norris
2015-06-02 1:32 ` Brian Norris
2015-06-02 1:32 ` Brian Norris
2015-06-02 1:32 ` Brian Norris
2015-06-02 9:01 ` Stefan Agner
2015-06-02 9:01 ` Stefan Agner
2015-06-02 9:01 ` Stefan Agner
2015-06-03 8:10 ` Sebastian Andrzej Siewior
2015-06-03 8:10 ` Sebastian Andrzej Siewior
2015-06-03 8:10 ` Sebastian Andrzej Siewior
2015-06-03 9:45 ` Stefan Agner
2015-06-03 9:45 ` Stefan Agner
2015-06-03 9:45 ` Stefan Agner
2015-06-03 12:03 ` Sebastian Andrzej Siewior
2015-06-03 12:03 ` Sebastian Andrzej Siewior
2015-06-03 12:03 ` Sebastian Andrzej Siewior
2015-06-03 12:03 ` Sebastian Andrzej Siewior
2015-06-03 15:09 ` Stefan Agner
2015-06-03 15:09 ` Stefan Agner
2015-06-03 15:09 ` Stefan Agner
2015-06-03 15:09 ` Stefan Agner
2015-06-09 20:05 ` Sebastian Andrzej Siewior
2015-06-09 20:05 ` Sebastian Andrzej Siewior
2015-06-09 20:05 ` Sebastian Andrzej Siewior
2015-06-09 20:05 ` Sebastian Andrzej Siewior
2015-06-03 13:08 ` Sebastian Andrzej Siewior
2015-06-03 13:08 ` Sebastian Andrzej Siewior
2015-06-03 13:08 ` Sebastian Andrzej Siewior
2015-06-03 13:08 ` Sebastian Andrzej Siewior
2015-06-03 15:05 ` Stefan Agner
2015-06-03 15:05 ` Stefan Agner
2015-06-03 15:05 ` Stefan Agner
2015-06-03 15:05 ` Stefan Agner
2015-06-09 20:07 ` Sebastian Andrzej Siewior [this message]
2015-06-09 20:07 ` Sebastian Andrzej Siewior
2015-06-09 20:07 ` Sebastian Andrzej Siewior
2015-06-09 20:07 ` Sebastian Andrzej Siewior
2015-06-09 20:31 ` Stefan Agner
2015-06-09 20:31 ` Stefan Agner
2015-06-09 20:31 ` Stefan Agner
2015-06-09 20:31 ` Stefan Agner
2015-06-12 19:44 ` Sebastian Andrzej Siewior
2015-06-12 19:44 ` Sebastian Andrzej Siewior
2015-06-12 19:44 ` Sebastian Andrzej Siewior
2015-06-17 13:02 ` Stefan Agner
2015-06-17 13:02 ` Stefan Agner
2015-06-17 13:02 ` Stefan Agner
2015-06-18 18:27 ` Sebastian Andrzej Siewior
2015-06-18 18:27 ` Sebastian Andrzej Siewior
2015-06-18 18:27 ` Sebastian Andrzej Siewior
2015-06-18 18:27 ` Sebastian Andrzej Siewior
2015-03-25 16:28 ` [PATCH v4 2/6] mtd: nand: vf610_nfc: add hardware BCH-ECC support Stefan Agner
2015-03-25 16:28 ` Stefan Agner
2015-03-25 16:28 ` Stefan Agner
2015-03-25 16:28 ` [PATCH v4 3/6] mtd: nand: vf610_nfc: add device tree bindings Stefan Agner
2015-03-25 16:28 ` Stefan Agner
2015-03-25 16:28 ` Stefan Agner
2015-03-25 16:28 ` Stefan Agner
2015-03-25 16:28 ` [PATCH v4 4/6] ARM: vf610: enable NAND Flash Controller Stefan Agner
2015-03-25 16:28 ` Stefan Agner
2015-03-25 16:28 ` Stefan Agner
2015-03-25 16:28 ` Stefan Agner
2015-03-25 16:28 ` [PATCH v4 5/6] ARM: dts: vf610: add NAND flash controller peripherial Stefan Agner
2015-03-25 16:28 ` Stefan Agner
2015-03-25 16:28 ` Stefan Agner
2015-03-25 16:28 ` [PATCH v4 6/6] ARM: dts: vf-colibri: enable NAND flash controller Stefan Agner
2015-03-25 16:28 ` Stefan Agner
2015-03-25 16:28 ` Stefan Agner
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