On 21/02/2023 13:44, Philippe Mathieu-Daudé wrote:
Hi Mark,
The mac99 machines use the same PIC input IRQs for the Uninorth
output IRQs:
379 if (PPC_INPUT(env) != PPC_FLAGS_INPUT_970) {
380 /* Uninorth AGP bus */
381 for (i = 0; i < 4; i++) {
382 qdev_connect_gpio_out(uninorth_agp_dev, i,
383 qdev_get_gpio_in(pic_dev, 0x1b + i));
384 }
385
386 /* Uninorth internal bus */
387 for (i = 0; i < 4; i++) {
388 qdev_connect_gpio_out(uninorth_internal_dev, i,
389 qdev_get_gpio_in(pic_dev, 0x1b + i));
390 }
391 }
Did you mean to use an OR gate here?
Hi Phil,
These are separate PCI buses so I suspect they should be wired up with different
IRQs, but this wiring has been the same ever since the code was introduced. I think
it should be possible to dig the values out from a suitable device tree but it's not
something I've looked at in any detail.
ATB,
Mark.
