Dear Max, > Does it mean an IRQ to be edge-triggered? No, it is a level-sensitive and active-high interrupt. This is why i tried to use qemu_irq_raise() to trigger IRQ.
Thanks, Simen
Hi Max, Thanks for your patience and help. I`ve tried to do what you said, but the problem doesn`t go away. And actually i cannot add a new register to the fpga device, because the fpga device i`m emulating already exists in the real world. So i cannot change anything about hardware properties and linux driver for this device.Then I don't get its IRQ logic. Does it mean an IRQ to be edge-triggered? Its model should use qemu_irq_pulse then instead of qemu_irq_raise and its IRQ line should be connected to edge-sensing input of interrupt controller. Input that you have used is also used to sense PCI IRQ and is level-sensing.By the way, how did you finally fix your problem?I didn't have any. (:
