Re: SCSI driver questions ..

[Ulf Carlsson <ulfc@thepuffingroup.com>]

On Fri, May 14, 1999 at 04:47:23PM +0200, Ulf Carlsson wrote:
> > dma_init_read and dma_init_write are passed a __u32 vaddress, this is
> > resolving on my system for the first write to  00fe3000, however if I read
> > from this address I get a 
> > 
> > Unable to handle kernel paging request at virtual address 00fe3000
> 
> 0x00fe3000 is a physical address, you may pass that address to the hardware,
> but you may not use it in the kernel. If you want to access it from the kernel
> you will have to add 0xa0000000. That's easily done by using the KSEG1 macro,
> thus in your particular case KSEG1(0x00fe3000).

Uhm, excuse me for replying to myself, but that should be KSEG1ADDR(0x00fe3000)
of course.

- Ulf