haraldwolff/qemu-patch-raspberry4
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uhci: fix irq routing

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The multifunction ich9 ehci controller with uhci companions uses a
different interrupt pin for each function.  The three uhci devices
get pins A, B and C, whereas ehci uses pin D.  This way the guest
can assign different IRQ lines to each controller.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Gerd Hoffmann 2012-05-25 12:53:47 +02:00
parent 5852d3bfe1
commit 973002c114
1 changed files with 19 additions and 2 deletions
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21
hw/usb/hcd-uhci.c
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@ -138,6 +138,7 @@ struct UHCIState {
/* Interrupts that should be raised at the end of the current frame. */
uint32_t pending_int_mask;
int irq_pin;
/* Active packets */
QTAILQ_HEAD(, UHCIQueue) queues;
@ -340,7 +341,7 @@ static void uhci_update_irq(UHCIState *s)
} else {
level = 0;
}
qemu_set_irq(s->dev.irq[3], level);
qemu_set_irq(s->dev.irq[s->irq_pin], level);
}
static void uhci_reset(void *opaque)
@ -1184,15 +1185,31 @@ static USBBusOps uhci_bus_ops = {
static int usb_uhci_common_initfn(PCIDevice *dev)
{
PCIDeviceClass *pc = PCI_DEVICE_GET_CLASS(dev);
UHCIState *s = DO_UPCAST(UHCIState, dev, dev);
uint8_t *pci_conf = s->dev.config;
int i;
pci_conf[PCI_CLASS_PROG] = 0x00;
/* TODO: reset value should be 0. */
pci_conf[PCI_INTERRUPT_PIN] = 4; /* interrupt pin D */
pci_conf[USB_SBRN] = USB_RELEASE_1; // release number
switch (pc->device_id) {
case PCI_DEVICE_ID_INTEL_82801I_UHCI1:
s->irq_pin = 0; /* A */
break;
case PCI_DEVICE_ID_INTEL_82801I_UHCI2:
s->irq_pin = 1; /* B */
break;
case PCI_DEVICE_ID_INTEL_82801I_UHCI3:
s->irq_pin = 2; /* C */
break;
default:
s->irq_pin = 3; /* D */
break;
}
pci_config_set_interrupt_pin(pci_conf, s->irq_pin + 1);
if (s->masterbus) {
USBPort *ports[NB_PORTS];
for(i = 0; i < NB_PORTS; i++) {