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From: Anil kumar <anils_r@yahoo.com>
To: linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org
Subject: bus_to_virt equivalent
Date: Mon, 7 Nov 2005 15:52:47 -0800 (PST)	[thread overview]
Message-ID: <20051107235247.67981.qmail@web32402.mail.mud.yahoo.com> (raw)

Hi,

I am trying to port bus_to_virt and virt_to_bus to the
DMA-mapping scheme.
I found a way to move virt_to_bus() as follows:
page = virt_to_page(cmd->request_buffer);
offset = (unsigned long)address & ~PAGE_MASK;
dma_addr_t addr = pci_map_page(dev, page, offset,
size,direction);

But now I want to get virtual address for dma_addr_t.

Any help is greatly appreciated.

with regards,
  Anil


		
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             reply	other threads:[~2005-11-07 23:52 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-11-07 23:52 Anil kumar [this message]
2005-11-08  1:37 ` Matthew Wilcox
2005-11-08 22:47   ` Anil kumar
2005-11-08 22:53     ` Russell King

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