Sam Song <samlinuxppc at yahoo.com.cn> wrote: > Hi all, > > A PCI interrupt probelm confused me when porting > 2.6.13-rc3 on a custom 8248 board. There was a > Gb ethernet RTL8110S on board with IDSEL AD25 and > IRQ3. So I made some changes as follows: > > --- linux-2.6.13-rc3/arch/ppc/platforms/pq2ads.h > +++ linux-2.6.13-rc3-sam/arch/ppc/platforms/pq2ads.h > @@ -74,11 +78,11 @@ > -#define PCI_INT_TO_SIU SIU_INT_IRQ2 > +#define PCI_INT_TO_SIU SIU_INT_IRQ3
Ummm, not the case. ADS8272 uses a CPLD PCI interrupt controller which takes up IRQ2. No need to me:-) > --- linux-2.6.13-rc3/arch/ppc/syslib/m82xx_pci.c > +++ linux-2.6.13-rc3-sam/arch/ppc/syslib/m82xx_pci.c > @@ -60,12 +60,20 @@ > * A B C D > */ > { > +#if 0 > { PIRQA, PIRQB, PIRQC, PIRQD },/* IDSEL 22 - PCI > > slot 0 */ > { PIRQD, PIRQA, PIRQB, PIRQC }, /* IDSEL 23 - > PCI > slot 1 */ > { PIRQC, PIRQD, PIRQA, PIRQB }, /* IDSEL 24 - > PCI > slot 2 */ > +#else > + {22, 22, 22, 22},/* IDSEL 22/IRQ4-PCI slot 0-USB > */ > + {23, 23, 23, 23},/* IDSEL 23/IRQ5-PCI slot 1-IDE > */ > + {24, 24, 0, 0},/* IDSEL 24 - PCI slot # - NULL > */ > + {25, 25, 25, 25},/* IDSEL 25/IRQ3-PCI slot 2- Gb > */ Set IRQ3 in the last line as 21 to assign the IRQ3 to Gb ethernet. > Gb interrupt remained unchangable in the whole test > process. I could ping target itself but not for > outside machine. So I suspect this result was due to > PCI interrupt setting but don't know where the > probelm is. Any idea? Well, I finally masked pq2ads interrupt irq init and adjusted SIUMCR IRQ3 setting correctly. Then everything went as smoothly as clockwork. Sorry to bother here:-) Sam __________________________________________________ ??????????????? http://cn.mail.yahoo.com