On 29/03/2017 15:16, Mason wrote: > But I don't understand how to get my pcie pointer back in irq_ack > or irq_unmask, or the relevant msi. Can you throw me a clue? Let's see... the irq_chip call-backs receive an irq_data pointer. struct irq_data - per irq chip data passed down to chip functions struct irq_chip - hardware interrupt chip descriptor irq_data contains a void *chip_data member. Can I use chip_data to stash a struct tango_pcie pointer? /** * irq_set_chip_data - set irq chip data for an irq * @irq: Interrupt number * @data: Pointer to chip specific data * * Set the hardware irq chip data for an irq */ int irq_set_chip_data(unsigned int irq, void *data) But where would I call it? And for which irq? Otherwise, I found by trial-and-error that I can reach pcie through data->domain->parent->host_data data->domain == msi_dom msi_dom->parent == irq_dom irq_dom->host_data == pcie But data->irq and data->hwirq don't hold the MSI index :-( I suppose I have to ask for some mapping? Regards. -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
