Thinus Viljoen wrote: > Hi > > My e1000 NIC and another card (Arcnet PCI card) shares the same > interrupt. I am busy writing a RTDM driver for the Arcnet card. As I > understand it is possible to share interrupts between real-time device > drivers? > > Anyways, I changed the rt_e1000 driver's rtdm_irq_request() call to > pass the RTDM_IRQTYPE_SHARED flag, and did the same to my Arcnet > driver. The Arcnet ISR returns RTDM_IRQ_NONE when it is not its > interrupt (it seems as though the rt_e1000 also does this correctly?) > > When I insert the first of the two drivers, everything seems OK. > However, when I insert the second driver (the order doesn't seem to > matter), rtdm_irq_request() returns -EBUSY. Are there perhaps some > steps that I am missing to get shared interrupts working? > > (I am using RTnet 0.9.6 and RTAI 3.4)
Sorry, I will not be able to go into details this time. But these two pointers may help to help yourself: - check the latest changes to rt_8139too /wrt IRQ sharing - verify if rtai 3.4 already contains the latest irq sharing code (check against 3.5 or so) Jan
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