PPC beginner questions
wmaxfield at gmail.com
Tue Aug 22 02:07:04 EST 2006
OK. I'm breaking my promise. :) A couple more questions.
On 8/21/06, Grant Likely <grant.likely at secretlab.ca> wrote:
> On 8/21/06, Wade Maxfield <wmaxfield at gmail.com> wrote:
> > Hi Grant,
> > Thanks!
> > in*
> > out*
> > I'm assuming inb() outb(), inw() outw()?? I've been googling and have
> > come up short with info that makes sense. It is almost all x86 centric.
> in_8, in_be16, in_be32, out_8, out_be16, out_be32 for big-endian
> device registers
> in_8, in_le16, in_le32, out_8, out_le16, out_le32 for little endian
> device registers
-->Interesting. Do these functions do 'eieio' (Email, Internet, Electronic
Information Officer functions (southpark cartoon), err, or Enforce In-Order
Execution of Input/Output) for me, or do I have to do that? I'm still
confused as to that Old MacDonald function.
> > We will not be porting these drivers, this is a captive box internal
> > only, limited run (200 units or so), 10 to 20 year lifespan once it hits
> > field.
> > So, the virtual address I get back can be used directly. Can I cast
> > short * and long * and char *?
> heh, yes you can; but if your writing new code why not use good
> practice from the start? :)
--> Ok, you win. How about ioread8() or inb() also? Are they not coded in
PPC correctly? Or is the in_8() more modern?
> > I apologize for the basic questions, but I expect this will be a
> > question for quite some time.
> No worries; ask away!
--> is ioremap() equivalent to ioremap_nocache() on the PPC 405?
> BTW, when on the mailing list, please use "reply to all" and put your
> comments below what you're commenting on. This keeps the thread on
> the mailing list for others to see, and it makes it blatentely obvious
> what you're commenting on. (just general list-etiquette)
> Grant Likely, B.Sc. P.Eng.
> Secret Lab Technologies Ltd.
> grant.likely at secretlab.ca
> (403) 399-0195
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