linux-kernel - Re: libata & no PCI: dma_[un]map

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Message-ID: <20070605121244.277203c1@the-village.bc.nu>
Date:	Tue, 5 Jun 2007 12:12:44 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	William Lee Irwin III <wli@...omorphy.com>
Cc:	David Miller <davem@...emloft.net>, mroos@...ux.ee,
	linux-kernel@...r.kernel.org
Subject: Re: libata & no PCI: dma_[un]map_single undefined

> > The 32-bit sparc port has some but those PCMCIA controllers aren't
> > going to be supported in the foreseeable future, you have to abstract
> > out all the inb/outb etc. operations to go through the pcmcia
> > controller driver for one thing.

Thats one place iomap might actually save the day as you can hack in an
ugly "if its this page then go via pcmcia" hack into the io_read8 etc
methods and save the universe.

> I don't foresee my ever dealing with those PCMCIA controllers. If by
> some miracle I manage to get any work done on basic functionality I'll
> consider that having won.

8)
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