From: Grant Grundler <grundler@dsl2.external.hp.com>
To: "J.E.J. Bottomley" <James.Bottomley@steeleye.com>
Cc: Miles Bader <miles@gnu.org>, Greg KH <greg@kroah.com>,
Matthew Wilcox <willy@debian.org>,
"Adam J. Richter" <adam@yggdrasil.com>,
andmike@us.ibm.com, hch@lst.de, linux-kernel@vger.kernel.org,
mochel@osdl.org, parisc-linux@lists.parisc-linux.org
Subject: Re: [parisc-linux] Untested port of parisc_device to generic device interface
Date: Wed, 13 Nov 2002 13:37:09 -0700 [thread overview]
Message-ID: <20021113203709.2C61B4829@dsl2.external.hp.com> (raw)
In-Reply-To: Message from "J.E.J. Bottomley" <James.Bottomley@steeleye.com> of "Wed, 13 Nov 2002 15:21:07 EST." <200211132021.gADKL8r02349@localhost.localdomain>
"J.E.J. Bottomley" wrote:
> Actually, I think dma_mask and consistent memory are orthogonal problems.
No. consistent memory needs to be reachable by the device as well.
dma_mask constrains which memory pci_alloc_consistent() can use.
> dma_masks are used by the I/O subsystem to determine whether direct DMA to a
> memory region containing an I/O buffer is possible or whether it has to be
> bounced. Consistent memory is usually allocated for driver specific
> transfers. The I/O subsystem doesn't usually require the actual I/O buffers
> to be in consistent memory.
right.
grant
next prev parent reply other threads:[~2002-11-13 20:37 UTC|newest]
Thread overview: 116+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-11-09 4:51 [parisc-linux] Untested port of parisc_device to generic device interface Adam J. Richter
2002-11-09 5:21 ` Matthew Wilcox
2002-11-09 5:21 ` Matthew Wilcox
2002-11-09 6:03 ` Greg KH
2002-11-09 6:03 ` Greg KH
2002-11-09 15:33 ` J.E.J. Bottomley
2002-11-09 15:33 ` J.E.J. Bottomley
2002-11-09 15:33 ` J.E.J. Bottomley
2002-11-13 6:13 ` Greg KH
2002-11-13 7:46 ` Miles Bader
2002-11-13 7:52 ` Greg KH
2002-11-13 7:52 ` Greg KH
2002-11-13 8:02 ` Miles Bader
2002-11-13 8:02 ` Miles Bader
2002-11-13 8:10 ` Greg KH
2002-11-13 8:26 ` Miles Bader
2002-11-13 8:25 ` Greg KH
2002-11-13 8:25 ` Greg KH
2002-11-13 9:05 ` Miles Bader
2002-11-13 9:05 ` Miles Bader
2002-11-13 8:26 ` Miles Bader
2002-11-13 8:10 ` Greg KH
2002-11-13 20:13 ` Grant Grundler
2002-11-13 20:21 ` J.E.J. Bottomley
2002-11-13 20:21 ` J.E.J. Bottomley
2002-11-13 20:37 ` Grant Grundler [this message]
2002-11-13 20:37 ` Grant Grundler
2002-11-13 20:21 ` J.E.J. Bottomley
2002-11-13 20:13 ` Grant Grundler
2002-11-13 11:59 ` Ivan Kokshaysky
2002-11-13 11:59 ` Ivan Kokshaysky
2002-11-13 12:36 ` Marc Zyngier
2002-11-13 12:36 ` Marc Zyngier
2002-11-13 16:32 ` Bjorn Helgaas
2002-11-13 16:32 ` Bjorn Helgaas
2002-11-13 17:23 ` J.E.J. Bottomley
2002-11-13 17:23 ` J.E.J. Bottomley
2002-11-13 17:23 ` J.E.J. Bottomley
2002-11-13 20:33 ` Grant Grundler
2002-11-13 20:33 ` Grant Grundler
2002-11-13 20:44 ` J.E.J. Bottomley
2002-11-13 20:44 ` J.E.J. Bottomley
2002-11-13 20:44 ` J.E.J. Bottomley
2002-11-13 21:42 ` Grant Grundler
2002-11-13 21:42 ` Grant Grundler
2002-11-13 20:12 ` Grant Grundler
2002-11-13 20:12 ` Grant Grundler
2002-11-13 7:46 ` Miles Bader
2002-11-13 6:13 ` Greg KH
2002-11-09 7:58 ` Marc Zyngier
2002-11-09 7:58 ` Marc Zyngier
2002-11-09 18:04 ` Grant Grundler
2002-11-09 18:04 ` Grant Grundler
-- strict thread matches above, loose matches on Subject: below --
2002-12-18 3:01 [RFT][PATCH] generic device DMA implementation James Bottomley
2002-12-18 3:13 ` David Mosberger
2002-12-28 18:14 ` Russell King
2002-12-28 18:19 ` James Bottomley
2002-12-04 17:47 [RFC] " James Bottomley
2002-12-04 18:27 ` Jeff Garzik
2002-12-04 19:36 ` James Bottomley
2002-12-04 21:19 ` Miles Bader
2002-12-04 21:21 ` Miles Bader
2002-12-04 21:42 ` James Bottomley
2002-12-05 5:44 ` Miles Bader
2002-12-04 21:46 ` James Bottomley
2002-12-05 2:31 ` Miles Bader
2002-12-05 3:06 ` James Bottomley
2002-12-05 5:02 ` David Gibson
2002-12-05 11:15 ` Benjamin Herrenschmidt
2002-12-05 11:16 ` William Lee Irwin III
2002-12-05 15:12 ` James Bottomley
2002-12-05 0:47 ` David Gibson
2002-12-05 0:54 ` Jeff Garzik
2002-12-05 1:44 ` James Bottomley
2002-12-05 2:38 ` David Gibson
2002-12-05 3:13 ` James Bottomley
2002-12-05 5:05 ` David Gibson
2002-12-05 15:03 ` James Bottomley
2002-12-05 23:54 ` David Gibson
2002-12-05 3:17 ` Miles Bader
2002-12-05 6:06 ` David Gibson
2002-12-05 6:43 ` Miles Bader
2002-12-05 23:44 ` David Gibson
2002-12-06 2:23 ` Miles Bader
2002-12-05 3:41 ` Jeff Garzik
2002-12-05 6:04 ` David Gibson
2002-12-05 16:29 ` Jeff Garzik
2002-12-05 23:59 ` David Gibson
2002-12-05 11:08 ` Benjamin Herrenschmidt
2002-12-05 11:35 ` Russell King
2002-12-05 15:24 ` James Bottomley
2002-12-06 0:01 ` David Gibson
2002-11-10 5:20 [parisc-linux] Untested port of parisc_device to generic device interface Adam J. Richter
2002-11-10 5:20 Adam J. Richter
2002-11-10 1:50 Adam J. Richter
2002-11-10 1:50 Adam J. Richter
2002-11-10 1:50 ` Adam J. Richter
2002-11-10 0:23 Adam J. Richter
2002-11-10 0:23 Adam J. Richter
2002-11-10 2:01 ` J.E.J. Bottomley
2002-11-10 2:01 ` J.E.J. Bottomley
2002-11-10 2:01 ` J.E.J. Bottomley
2002-11-10 2:15 ` Matthew Wilcox
2002-11-10 2:15 ` Matthew Wilcox
2002-11-09 12:22 Adam J. Richter
2002-11-09 12:22 Adam J. Richter
2002-11-09 4:51 Adam J. Richter
2002-11-09 1:28 Adam J. Richter
2002-11-09 1:28 Adam J. Richter
2002-11-09 1:56 ` Grant Grundler
2002-11-09 3:46 ` Matthew Wilcox
2002-11-09 17:02 ` Grant Grundler
2002-11-09 17:50 ` Matthew Wilcox
2002-11-09 19:03 ` Grant Grundler
2002-11-09 3:37 ` Matthew Wilcox
2002-11-09 3:37 ` Matthew Wilcox
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