On Tue, 7 Jan 2025 at 17:55, Cédric Le Goater <c...@kaod.org> wrote: > > Hello, > > > I would not recommend using qemu_irq_invert() in new code. > > > > I guess in an ideal world we'd implement a QOM object > > that encapsulated the the "not gate" logic, similar to > > TYPE_OR_IRQ. (Though for TYPE_OR_IRQ we made the mistake > > of making it inherit from TYPE_DEVICE, not TYPE_SYSBUS_DEVICE, > > so it doesn't get reset properly on system reset and so > > the "what happens to the output on reset" is still not > > really correct.) > > I see how this would work with TYPE_PL181 model but I don't > understand how this could work with TYPE_SYSBUS_SDHCI since > we don't have a gpio line to invert the level. Am I missing > something ?
You have a gpio line, i.e. a qemu_irq, because you're passing it to qemu_irq_invert(), and you could instead connect it into a hypothetical TYPE_NOT_IRQ device. qemu_irq are GPIO lines, the type just has an odd name for historical reasons. -- PMM
