On Wed, 2008-03-05 at 17:15 +0100, Philippe De Muyter wrote: > > I asked the guy who designed the hardware, and if I understand > correctly : > > - the i/o and memory resources of the pci device are connected to the > pci bus > - the interrupts are directly connected to the MPIC > > Can I describe that in the dts file ?
Sure, you can describe pretty much any interrupt routing, provided that we know -how- (ie. where) they are connected. We also need to know the idsel of the devices. (The later we can deduce from lspci done in arch/ppc). Ben. > Philippe > > > > > Or are you doing some swizzling ? > > > > Also, I would need to know how those external IRQs are connected to > the MPIC, > > I don't have the spec of that chip here. Hrm. Somebody from > freescale can > > help him here ? > > > > It's also not clear to me what your interrupts 9 10 and 11 are since > you > > seem to only talk about PIRQA...D which is only 4 lines .. > > > > So at this stage, that's not enough information. We need to know > exactly how > > you have wired things on your board, and somebody from fsl needs to > tell > > me how the ExtIrq are routed to the MPIC on that guy. > > > > Once that's done, you seem to have grasped the interrupt map... for > any > > device or slot, you provide the mapping between idsel/pirq line on > one side, > > and mpic interrupt & sense on the other. For PCI, sense is always 1 > for an > > mpic so you mostly have to check your actual MPIC source numbers. > > > > >From your .dts, I see you've been doing some swizzling of slots > using > > interrupts 1...4 ... do that correspond to EXTIRQ 5....8 ? > > > > Ben. > > > > > > > > /* > ************************************************************************ */ > > > > --- ./arch/ppc/platforms/85xx/mpc85xx_ads_common.hbk 2008-01-24 > 22:58:37.000000000 +0000 > > > +++ ./arch/ppc/platforms/85xx/mpc85xx_ads_common.h 2008-02-20 > 16:36:07.000000000 +0000 > > > @@ -29,10 +29,17 @@ > > > extern void mpc85xx_ads_map_io(void) __init; > > > > > > /* PCI interrupt controller */ > > > +#ifdef CONFIG_MEIP_8540 > > > +#define PIRQA MPC85xx_IRQ_EXT5 > > > +#define PIRQB MPC85xx_IRQ_EXT6 > > > +#define PIRQC MPC85xx_IRQ_EXT7 > > > +#define PIRQD MPC85xx_IRQ_EXT8 > > > +#else > > > #define PIRQA MPC85xx_IRQ_EXT1 > > > #define PIRQB MPC85xx_IRQ_EXT2 > > > #define PIRQC MPC85xx_IRQ_EXT3 > > > #define PIRQD MPC85xx_IRQ_EXT4 > > > +#endif > > > > > > #define MPC85XX_PCI1_LOWER_IO 0x00000000 > > > #define MPC85XX_PCI1_UPPER_IO 0x00ffffff > _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
