Re: [Qemu-devel] [PATCH 0/3] hw: set irq without selecting INTx pin

[Michael S. Tsirkin]

On Mon, Sep 30, 2013 at 11:02:06AM +0200, Paolo Bonzini wrote:
> Il 30/09/2013 10:58, Michael S. Tsirkin ha scritto:
> >>> > > As a next step, can we make pci_set_irq non-inline and make
> >>> > > it call pci_irq_handler directly, and get rid of the irq field?
> >> > What irq field? 
> >     /* IRQ objects for the INTA-INTD pins.  */
> >     qemu_irq *irq;
> > 
> 
> That's still used by devices that use common code for PCI and sysbus
> versions (e.g. USB OHCI and EHCI).
> 
> Paolo

Well this work wouldn't be complete without
addressing them anyway.

These devices would have to create their own
irq in pci-specific code, along the lines of:

- s->irq = dev->irq[3];
+ s->irq = qemu_allocate_irqs(pci_set_irq, dev, 1);


If there's more than one device like this, we should add

/* Return an irq that calls pci_set_irq internally */
qemu_irq *pci_allocate_irq(PCIDevice *);

-- 
MST