Messages in this thread | | | Date | Fri, 26 Jun 2015 20:04:42 +0800 | From | "majun (F)" <> | Subject | Re: [PATCH v2 2/3] IRQ/Gic-V3: Change arm-gic-its to support the Mbigen interrupt |
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在 2015/6/26 18:40, Marc Zyngier 写道: > > My opinion is that we need to be able to lookup the domain from the core > code without any of these hacks, and this is what I'm working on at the > moment. There is no way external code will be allowed to mess with the > internals of the ITS. > > For the time being, just expose the domain with a helper (you can match > it with the of_node). Do you mean add a fucntion in ITS likes below:
struct irq_domain *get_its_domain(struct device_node *node) { struct its_node *its = NULL; list_for_each_entry(its, &its_nodes, entry) { if(its->msi_chip.of_node == node) break; }
return (its)?its->domain:NULL; }
How about add a '.match ' member in its_domain_ops just like: .match = get_its_domain;
So, I can use the fucntion 'irq_find_host' in mbigne driver
>In the long run, you should be able to look it up > directly from the domain list. > I think the domain list you said is 'irq_domain_list' which defined in Irqdomain.c static LIST_HEAD(irq_domain_list);
Thanks!
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