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From: Stefan Richter <stefanr@s5r6.in-berlin.de>
To: Grant Grundler <grundler@parisc-linux.org>
Cc: Randy Dunlap <randy.dunlap@oracle.com>, Greg KH <greg@kroah.com>,
	Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>,
	Linux Kernel list <linux-kernel@vger.kernel.org>,
	linux-pci@atrey.karlin.mff.cuni.cz, Andrew Morton <akpm@osdl.org>,
	e1000-devel@lists.sourceforge.net, linux-scsi@vger.kernel.org,
	Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Subject: Re: [PATCH 1/5] Update Documentation/pci.txt
Date: Fri, 22 Dec 2006 22:52:09 +0100	[thread overview]
Message-ID: <458C5389.70704@s5r6.in-berlin.de> (raw)
In-Reply-To: <20061222114658.01da661b.randy.dunlap@oracle.com>

> On Mon, 18 Dec 2006 00:11:33 -0700 Grant Grundler wrote:
...
>> +4.1 Stop IRQs on the device
>> +~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> +How to do this is chip/device specific. If it's not done, it opens
>> +the possibility of a "screaming interrupt" if (and only if)
>> +the IRQ is shared with another device.
>> +
>> +When the shared IRQ handler is "unhoooked", the remaining devices
                                       ^^^
-> unhooked

...
>> +11. MMIO Space and "Write Posting"
>> +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> +Converting a driver from using I/O Port space to using MMIO space
>> +often requires some additional changes. Specifically, "write posting"
>> +needs to be handled. Many drivers (e.g. tg3, acenic, sym53c8xx_2)
>> +already do. I/O Port space guarantees write transactions reach the PCI
> 
>    already do this.
> 
>> +device before the CPU can continue. Writes to MMIO space allow to CPU
                                                                   ^^
>> +continue before the transaction reaches the PCI device. HW weenies
   ^
-> allow the CPU to continue

-- 
Stefan Richter
-=====-=-==- ==-- =-==-
http://arcgraph.de/sr/

  reply	other threads:[~2006-12-22 21:53 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-11-22  8:05 Hidetoshi Seto
2006-11-22  8:54 ` Arjan van de Ven
2006-11-22 18:28 ` Grant Grundler
2006-11-24  0:38   ` Hidetoshi Seto
2006-11-24  5:12     ` Grant Grundler
2006-11-24  6:05       ` Hidetoshi Seto
2006-12-06  7:26       ` Greg KH
2006-12-07  3:55         ` Grant Grundler
2006-12-10  7:25         ` Grant Grundler
2006-12-15 17:02           ` Greg KH
2006-12-18  7:11             ` Grant Grundler
2006-12-22 19:46               ` Randy Dunlap
2006-12-22 21:52                 ` Stefan Richter [this message]
2006-12-24  6:11                 ` Grant Grundler
2006-12-24  6:07               ` [PATCH] Update Documentation/pci.txt v7 Grant Grundler
2006-12-24 19:16                 ` Randy Dunlap
2006-12-25  7:59                   ` Grant Grundler
2006-12-25  8:06                 ` Grant Grundler
2006-12-25  8:08                   ` Grant Grundler
2007-01-02 21:45                     ` Greg KH
2007-01-03  7:15                       ` Grant Grundler
2006-12-25  9:04                   ` Kenji Kaneshige
2007-01-16 22:26                   ` patch pci-rework-documentation-pci.txt.patch added to gregkh-2.6 tree gregkh
2007-01-17  9:10                     ` Jiri Slaby
2007-01-17 19:21                       ` Greg KH

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