Hi folks,
When I am writing qtest cases for an interrupt controller, I
encounter some problems.
*1) Can't intercept both the irq in and irq out for the same device.*
It's a necessary feature for an interrupt controller qtest. However, as
you can see from qtest.c, when a device has intercepted irq out or irq
in, it can't intercept another.
" if (irq_intercept_dev) {
qtest_send_prefix(chr);
if (irq_intercept_dev != dev) {
qtest_send(chr, "FAIL IRQ intercept already enabled\n");
} else {
qtest_send(chr, "OK\n");
}
return; }
"
In my opinion, this code in qtest is protecting from intercepting irqs
repeatedly. But irq in and out are different directions, they should be
intercepted simultaneously. Is it right?
*2) Can't get the right IRQ num.*
If I intercept an IRQ out, I can get the num of IRQ if the IRQ
raises, . But the really IRQ I want to get is the IRQ that the
interrupt controller selected out. However I can't get this IRQ from
qtest_irq_handler.
Are there already some methods to surmount these problems? Any advice
is well appreciated. Thanks very much.
Zhiwei
