Hi Ben, thanks for all the answers,
On Wed, Mar 05, 2008 at 04:01:04PM +1100, Benjamin Herrenschmidt wrote: > > > I also attach my current (not working) dts file attempt. It is actually > > a modified mpc8540ads.dts file. > > > > I now thinks that the ide-cs (hda) discovery or not depends on the cold > > or warm reboot. > > > > Here are the patches for my config (MEIP_8540) relative to a vanilla > > linux-2.6.24. I hacked the MPC8540ADS config. The PCI4520 is the > > multi-function chip from TI (dual-socket pc-card + iee1394 ohci and two-port > > phy) > > .../... > > > +#ifdef CONFIG_MEIP_8540 > > + (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), // External 0 : nINTPFO > > + (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), // External 1 : nINTRTC > > + (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), // External 2 : nINTPLD > > + (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), // External 3 : nINTSTX > > + (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), // External 4 : nINTPHY > > +#if defined(CONFIG_PCI) > > + (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* External 5 : PCI4520 > > MFUNC 0 */ > > + (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* External 6 : PCI4520 > > MFUNC 1 */ > > + (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* External 7 : PCI4520 > > MFUNC 2 */ > > + (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* External 8 : PCI4520 > > MFUNC 3 */ > > + (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* External 9 : PCI4520 > > MFUNC 4 */ > > + (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* External 10 : > > PCI4520 MFUNC 5 */ > > + (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* External 11 : > > PCI4520 MFUNC 6 */ > > +#else > > + 0x0, /* External 6: */ > > + 0x0, /* External 7: */ > > + 0x0, /* External 8: */ > > + 0x0, /* External 9: */ > > + 0x0, /* External 10: */ > > + 0x0, /* External 11: */ > > +#endif > > +#else > > 0x0, /* External 0: */ > > #if defined(CONFIG_PCI) > > (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* External 1: PCI slot > > 0 */ > > @@ -77,6 +100,7 @@ > > 0x0, /* External 9: */ > > 0x0, /* External 10: */ > > 0x0, /* External 11: */ > > +#endif > > }; > > Ok, so based on the above, I deduce that you have 12 external interrupt > sources: > > 0...4 are those nINT* things. They correspond apparently do discrete > devices on your board. You will have to create device nodes in your .dts > for these with the appropriate interrupts property for each of these. > > The rest are ... hrm... weird. You -appear- to have 5 to 8 going to PCI, > to PIRQA...D. Do that mean that you have wired your connectors on the board > such that the interrupt does not depend on the actual slot number ? 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 ? 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
