From: Arnd Bergmann <arnd@arndb.de>
To: "Masayuki Ohtake" <masa-korg@dsn.okisemi.com>
Cc: "Alan Cox" <alan@lxorguk.ukuu.org.uk>,
"LKML" <linux-kernel@vger.kernel.org>,
"Andrew" <andrew.chih.howe.khor@intel.com>,
"Intel OTC" <joel.clark@intel.com>,
"Wang, Qi" <qi.wang@intel.com>,
"Wang, Yong Y" <yong.y.wang@intel.com>
Subject: Re: [PATCH] Topcliff PHUB: Generate PacketHub driver
Date: Wed, 16 Jun 2010 12:50:44 +0200 [thread overview]
Message-ID: <201006161250.45175.arnd@arndb.de> (raw)
In-Reply-To: <000801cb0d32$24ca1360$66f8800a@maildom.okisemi.com>
On Wednesday 16 June 2010, Masayuki Ohtake wrote:
> > Especially if you want to be able to use tools like 'cat', 'hexdump'
> > or 'dd' on the file descriptor, you need to implement support for
> > short reads.
> I don't know how to test(short read/write access).
> Could you tell me how to do the above ?
The easiest way is using dd, where you can specify the block
size as well as input and output offsets.
e.g.
dd if=/dev/topcliffphub of=testfile bs=7
Should be able to read the contents of the rom completely
without error conditions, copying seven bytes at a time.
dd if=inputfile of=/dev/topcliffphub bs=1 seek=1024 count=16
would write 16 bytes from inputfile into the rom at position 1024.
Arnd
next prev parent reply other threads:[~2010-06-16 10:50 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-15 6:58 [PATCH] Topcliff PHUB: Generate PacketHub driver Masayuki Ohtake
2010-06-15 10:37 ` Arnd Bergmann
2010-06-15 12:14 ` Masayuki Ohtake
2010-06-16 8:58 ` Masayuki Ohtake
2010-06-16 10:50 ` Arnd Bergmann [this message]
2010-06-17 0:17 ` Masayuki Ohtake
-- strict thread matches above, loose matches on Subject: below --
2010-06-22 5:33 Masayuki Ohtak
2010-06-22 10:33 ` Masayuki Ohtak
2010-06-22 22:12 ` Andrew Morton
2010-06-23 0:31 ` Masayuki Ohtake
2010-06-22 11:30 ` Arnd Bergmann
2010-06-22 13:52 ` Yong Wang
2010-06-29 23:31 ` Andy Isaacson
2010-06-30 5:58 ` Masayuki Ohtake
2010-06-30 18:28 ` Andy Isaacson
2010-07-01 4:08 ` Masayuki Ohtake
2010-06-22 2:14 Masayuki Ohtake
2010-06-08 5:00 Masayuki Ohtak
2010-06-08 5:46 ` Masayuki Ohtake
2010-06-08 8:01 ` Alan Cox
2010-06-08 7:20 ` Yong Wang
2010-06-08 8:09 ` Masayuki Ohtake
2010-06-08 8:04 ` Alan Cox
2010-06-07 12:39 Masayuki Ohtak
2010-06-07 15:05 ` Alan Cox
2010-06-08 0:19 ` Masayuki Ohtake
2010-06-14 12:09 ` Masayuki Ohtak
2010-06-14 12:50 ` Arnd Bergmann
2010-06-14 23:56 ` Masayuki Ohtake
2010-06-15 6:25 ` Masayuki Ohtake
2010-06-15 10:42 ` Arnd Bergmann
2010-06-15 12:12 ` Masayuki Ohtake
2010-06-17 2:43 ` Masayuki Ohtak
2010-06-17 11:59 ` Arnd Bergmann
2010-06-17 23:49 ` Masayuki Ohtake
2010-06-18 8:08 ` Wang, Yong Y
2010-06-18 11:39 ` Masayuki Ohtake
2010-06-04 10:16 Masayuki Ohtake
2010-06-04 12:00 ` Alan Cox
2010-06-07 7:53 ` Masayuki Ohtake
2010-06-07 13:37 ` Arnd Bergmann
2010-06-08 0:15 ` Masayuki Ohtake
2010-06-08 8:48 ` Masayuki Ohtake
2010-06-08 9:29 ` Arnd Bergmann
2010-06-09 0:14 ` Wang, Qi
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