| Message ID | 20200313082444.2439-8-mark.cave-ayland@ilande.co.uk (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | via-ide: fixes and improvements | expand |
diff --git a/hw/ide/via.c b/hw/ide/via.c index 3c4d474e48..8de4945cc1 100644 --- a/hw/ide/via.c +++ b/hw/ide/via.c @@ -113,10 +113,7 @@ static void via_ide_set_irq(void *opaque, int n, int level) } level = (d->config[0x70] & 0x80) || (d->config[0x78] & 0x80); - n = pci_get_byte(d->config + PCI_INTERRUPT_LINE); - if (n) { - qemu_set_irq(isa_get_irq(NULL, n), level); - } + qemu_set_irq(isa_get_irq(NULL, 14 + n), level); } static void via_ide_reset(DeviceState *dev)
The existing code uses fixed PCI IRQ routing on IRQ 14 rather than legacy IRQ 14/15 routing as documented in the datasheet. With the changes in this patchset guest OSs now correctly detect and configure the VIA controller in legacy IRQ routing mode, allowing the incorrect fixed PCI IRQ routing to be removed. Note that this fixed legacy IRQ 14/15 routing is identical to similar behaviour in the early PIIX IDE controllers. Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> --- hw/ide/via.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-)