iBook/UMA pre3

iBook/UMA pre3

[Benjamin Herrenschmidt]

I updated the patches and kernel to a new version. PCI config is fully
working now, USB works too. I'n now running MacOS under mac-on-linux (the
new version that doesn't require you to patch the kernel) on linux on the
iBook ;)

I had to hack horribly in the arch/ppc/kernel/prom.c code that parses the
"interrupt-map" property, I'll do a cleaner fix later this week.

The PCI code looks good (but I'd prefer using RTAS) and should support
bridges on the "middle" bus of uni-north (the one at f2000000 - if you
have a better idea to identify this one, tell me !). So PCI should work
on G4 and new iMac's too.

I didn't fix the ADB interrupt yet (and I'm wondering if my timer is the
cause of the large amount of BAD interrupts I'm getting all the time),
I'll look into this later too.

The kernel seems stable. Things are slow, especially with X, since the
hard disk is very slow (1.1Mb/sec). This will be better once I have
figured out how to set it to a better PIO mode, use DMA on it, and
eventually use this new Ultra/ATA feature (are there specs for this ?
Mine are still ATA-3 specs).

Have fun !

Benjamin.


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Re: iBook/UMA pre3

[Sven LUTHER]

On Mon, Oct 25, 1999 at 10:36:13PM +0200, Benjamin Herrenschmidt wrote:
> 
> I updated the patches and kernel to a new version. PCI config is fully
> working now, USB works too. I'n now running MacOS under mac-on-linux (the
> new version that doesn't require you to patch the kernel) on linux on the
> iBook ;)

Is any iof the scsi on USB controllers supported by linux ? 

Is some one working on this, is it difficult to do ?

Friendly,

Sven LUTHER

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Re: iBook/UMA pre3

[Benjamin Herrenschmidt]

Just a little mistake in my previous patch, if you intend to test on a
machine with a second PCI bridge (G4), in arch/ppc/kernel/pmac_pci.c, change

/* This one is for type 1 config accesses */
#define UNI_N_CFA1(bus, devfn, off)	\
	((((unsigned long)(bus)) << 16) \
	|(((unsigned long)(devfn)) << 8) \
	|(((unsigned long)(off)) & 0xFCUL))

to

/* This one is for type 1 config accesses */
#define UNI_N_CFA1(bus, devfn, off)	\
	((((unsigned long)(bus)) << 16) \
	|(((unsigned long)(devfn)) << 8) \
	|(((unsigned long)(off)) & 0xFCUL)) \
 | 1UL

I won't have time to post a new version until later this week.


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Re: iBook/UMA pre3

[Tom Rini]

On Tue, 26 Oct 1999, Sven LUTHER wrote:

> 
> On Mon, Oct 25, 1999 at 10:36:13PM +0200, Benjamin Herrenschmidt wrote:
> > 
> > I updated the patches and kernel to a new version. PCI config is fully
> > working now, USB works too. I'n now running MacOS under mac-on-linux (the
> > new version that doesn't require you to patch the kernel) on linux on the
> > iBook ;)
> 
> Is any iof the scsi on USB controllers supported by linux ? 
> 
> Is some one working on this, is it difficult to do ?

They supposedly work, tho I'm not sure if anyone has tried it w/ an OHCI
controller.

---
Tom Rini (TR1265)
http://gate.crashing.org/~trini/


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Re: iBook/UMA pre3

[Geert Uytterhoeven]

On Tue, 26 Oct 1999, Tom Rini wrote:
> On Tue, 26 Oct 1999, Sven LUTHER wrote:
> > On Mon, Oct 25, 1999 at 10:36:13PM +0200, Benjamin Herrenschmidt wrote:
> > > I updated the patches and kernel to a new version. PCI config is fully
> > > working now, USB works too. I'n now running MacOS under mac-on-linux (the
> > > new version that doesn't require you to patch the kernel) on linux on the
> > > iBook ;)
> > 
> > Is any iof the scsi on USB controllers supported by linux ? 
> > 
> > Is some one working on this, is it difficult to do ?
> 
> They supposedly work, tho I'm not sure if anyone has tried it w/ an OHCI
> controller.

And don't expect it to be faster than the ATA slow-PIO disk. USB (in its
current incarnation) tops at 12 Mbps.

Gr{oetje,eeting}s,
--
Geert Uytterhoeven -- Linux/{m68k~Amiga,PPC~CHRP} -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
							    -- Linus Torvalds


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