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Date: Fri, 9 Mar 2007 16:05:19 -0800
From: Andrew Sharp <andy.sharp@onstor.com>
To: "Warren Gale" <warren.gale@onstor.com>
Subject: Re: PROM load image comand
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No problemo, give me a call or I can try you at your desk.

Cheers,

a

On Fri, 9 Mar 2007 16:02:20 -0800 "Warren Gale"
<warren.gale@onstor.com> wrote:

> 
> Andy,
>   Ok, I'm looking but it does not compute. (Sorry)
> I can't find anything in the PROM code that has any mention of 
> "PMON Vectors".  Since I don't have any docs on PMON, (that I know of)
> do you have some thing that tells me a bit more on this?
> 
> Looks like there are some jump tables, is this what it's like?
> I'm willing to try anything. (At least once) 
> (I'm really just a diag guy..  single thread bit twiddling stuff)
> Thanks,
> Warren
> 
> -----Original Message-----
> From: Andy Sharp 
> Sent: Friday, March 09, 2007 3:32 PM
> To: Brian Stark
> Cc: Warren Gale
> Subject: Re: PROM load image comand
> 
> Here is header file from the kernel:
> 
> struct callvectors {
> 	int	(*open) (char*, int, int);
> 	int	(*close) (int);
> 	int	(*read) (int, void*, int);
> 	int	(*write) (int, void*, int);
> 	off_t	(*lseek) (int, off_t, int);
> 	int	(*printf) (const char*, ...);
> 	void	(*cacheflush) (void);
> 	char*	(*gets) (char*);
> 	union {
> 		int	(*smpfork) (unsigned long cp, char *sp);
> 		int	(*cpustart) (long, long, long, long);
> 	} _s;
> 	int	(*semlock) (int sem);
> 	void	(*semunlock) (int sem);
> };
> 
> 
> The printf function is the only one I really need, the others you
> could just leave as NULL.  Of course, the cpustart function would be
> good to play with.
> 
> Cheers,
> 
> a
> 
> On Fri, 9 Mar 2007 15:28:08 -0800 "Brian Stark"
> <brian.stark@onstor.com> wrote:
> 
> > Andy,
> > 
> > I think Warren understands what you're looking for with the PMON
> > call vectors since you guys have talked about it, but I don't know
> > if he's scoped the work yet.  It really depends on how soon you need
> > something.
> > 
> > 
> > Brian
> > 
> > 
> > 
> > > -----Original Message-----
> > > From: Andy Sharp 
> > > Sent: Friday, March 09, 2007 3:17 PM
> > > To: Brian Stark
> > > Cc: Warren Gale
> > > Subject: Re: PROM load image comand
> > > 
> > > On Fri, 9 Mar 2007 15:09:49 -0800 "Brian Stark"
> > > <brian.stark@onstor.com> wrote:
> > > 
> > > Ditto...
> > > 
> > > > See below...
> > > > 
> > > > 
> > > > > -----Original Message-----
> > > > > From: Andy Sharp
> > > > > Sent: Friday, March 09, 2007 2:53 PM
> > > > > To: Brian Stark
> > > > > Cc: Warren Gale
> > > > > Subject: Re: PROM load image comand
> > > > > 
> > > > > On Fri, 9 Mar 2007 14:40:23 -0800 "Brian Stark"
> > > > > <brian.stark@onstor.com> wrote:
> > > > > 
> > > > > > Crap, those damn interrupts get me every time.  The 16552
> > > > > interrupts
> > > > > > are not hooked up to anything because all of the PMC
> > > > > interrupts were
> > > > > > already taken when the 16552 was added.  Same goes for the
> > > > > Marvell GPP
> > > > > > pins that could be wired up as interrupt inputs.
> > > > > 
> > > > > So use the same int as the mpsc ports on the marvell.  
> > > > > Interrupt sharing is not a problem.  As long as they're
> > > > > "like" interrupts.
> > > > 
> > > > 
> > > > This may be feasible since the interrupts are tri-stated 
> > > when inactive 
> > > > (high).  I could wire up the 16552 interrupt directly to 
> > > the Marvell 
> > > > interrupt output that's used for the BSD mpsc port, which 
> > > looks to be 
> > > > CPU_INT0_L from the Marvell.  Then when this interrupt fires to
> > > > the PMC, you'd have to go poll the Marvell cause register and
> > > > then the 16552 port to see who generated it.  Is this cool?  If
> > > > so, 
> > > I'll look 
> > > > to see what the rework looks like.
> > > > 
> > > > Of course, this is only needed if you can't get polling to work.
> > > > Software fixes for hardware mistakes are so much fun!
> > > 
> > > I'll make you a deal: make me a PROM that gives me the 
> > > standard PMON call vectors and I'll make the polling thing 
> > > work.  Seriously.
> > > 
> > > Cheers,
> > > 
> > > a
> > > 
