> Yes, that's correct. However I'm quite confident from booting other > non-Solaris OSs > under qemu-system-sparc64 that PCI native mode is being used, > particularly as it is > possible to see the related PCI sabre IRQ routing configuration > changes.
Considering that Solaris 10 is accessing CFR and ARTTIM23 I don't think there is any doubt that it is using the chip in PCI native mode. I don't think Solaris 10 even has support for legacy mode. Thanks, Jasper Lowell. On Wed, 2020-03-04 at 21:07 +0000, Mark Cave-Ayland wrote: > On 04/03/2020 03:11, jasper.low...@bt.com wrote: > > > > cmd646_update_irq() only seems to raise PCI interrupt, should it > > > also > > > have > > > an option to use INT 14 and 15 in legacy mode similar to what my > > > patch > > > does for via-ide? > > > > Looking through /qemu/hw/ide/cmd646.c it doesn't look like QEMU has > > support for legacy mode. At the very least, it looks like we > > default to > > PCI native mode: > > > > static void pci_cmd646_ide_realize(PCIDevice *dev, Error **errp) > > ... > > pci_conf[PCI_CLASS_PROG] = 0x8f; > > ... > > > > To add support for legacy mode it would require changing > > cmd646_update_irq() and maybe cmd646_set_irq() so that interrupts > > are > > conditionally raised on IRQ14 and/or IRQ15 when the ports are in > > legacy > > mode. > > Yes, that's correct. However I'm quite confident from booting other > non-Solaris OSs > under qemu-system-sparc64 that PCI native mode is being used, > particularly as it is > possible to see the related PCI sabre IRQ routing configuration > changes. > > > ATB, > > Mark.
