Re: HP Jornada 6xx IRQ issues (Continued)

[Kristoffer E. <kri...@gm...>]

On Thu, 16 Aug 2007 12:05:50 +0900
"Magnus Damm" <mag...@gm...> wrote:

> On 8/16/07, Kristoffer Ericson <kri...@gm...> wrote:
> > Found it, jlime-current.git IRQ.H sets all my offchip_nr_irq's, must have added that when the IRQ stuff got reworked. I believe we could just set it to 256 or something, since Paul have defined the nr irq limit at that.
> 
> The base value for these interrupts should be set to something, that's
> for sure! I wonder if 256 is such a good choice though, mainly because
> NR_IRQS is set to 256 in include/asm-sh/irq.h. This constant seems to
> be the maximum number of interrupts supported by the kernel, and it is
> for instance used by irq_desc[] include/linux/irq.h. So I would go
> with a number below 256, exactly which depends on the number of
> interrupt sources you plan on installing - but make sure all
> interrupts fit in below NR_IRQS.
Understandable.

> 
> It looks like sh770x processor is using interrupt 0-63 (maximum vector
> is in vectors[] seems to be 0x9e0), so from the cpu point of view you
> are free to use interrupt 64-255 for your board-specific or companion
> chip interrupts. We also probably need to squeeze in the 16 pint
> interrupts there later on.
I've set 64 but is still experiencing IRQ aquiring errors:

hp6x0_apm: IRQ 32 request failed
HD64461 configured at 0xb0000000 on irq 36(mapped into 70 to 85)
HD64461: enabling PCMCIA devices
io scheduler noop registered
io scheduler deadline registered
io scheduler cfq registered (default)
Console: switching to colour frame buffer device 80x30
fb0: Hitachi HD64461 frame buffer device
SuperH SCI(F) driver initialized
sh-sci: ttySC0 at MMIO 0xfffffe80 (irq = 25) is a sci
sh-sci: ttySC1 at MMIO 0xa4000150 (irq = 59) is a scif
console [ttySC1] enabled
sh-sci sh-sci: Attempting to register port 3 when only 2 are available.
sh-sci sh-sci: Consider bumping CONFIG_SERIAL_SH_SCI_NR_UARTS!
loop: module loaded
SCSI Media Changer driver v0.25
pata_platform: probe of pata_platform failed with error -38
HD64461 PCMCIA bridge.
HD64461 Initializing Socket 0, IRQ 85
Unable to handle kernel NULL pointer dereference at virtual address 00000004
pc = 8d145d0c
*pde = 00000000

As you can see, some stuff gets setup correctly. Im basicly wondering if I'm doing it correctly. 
For instance HD64461, should be setup with IRQ 36 = IRQ 4 (in setup.c). How does it translate the 36 -> IRQ4?
If the IRQ list in setup-770x.c is ment to be a IRQ list, IRQ4 isn't at 36 position. Same goes for the apm driver which should use 32, but 32 is no longer mapped to the correct INTC.



> 
> / magnus


-- 
Kristoffer Ericson <Kri...@Gm...>