static void pnpacpi_parse_allocated_irqresource(struct pnp_dev *dev,
u32 gsi, int triggering,
int polarity, int shareable)
{
int irq, flags;
int p, t;
if (!valid_IRQ(gsi)) {
pnp_add_irq_resource(dev, gsi, IORESOURCE_DISABLED);
return;
}
if (!acpi_get_override_irq(gsi, &t, &p)) {
t = t ? ACPI_LEVEL_SENSITIVE : ACPI_EDGE_SENSITIVE;
p = p ? ACPI_ACTIVE_LOW : ACPI_ACTIVE_HIGH;
if (triggering != t || polarity != p) {
dev_warn(&dev->dev, "IRQ %d override to %s, %s\n",
gsi, t ? "edge":"level", p ? "low":"high");
triggering = t;
polarity = p;
}
}
flags = irq_flags(triggering, polarity, shareable);
irq = acpi_register_gsi(&dev->dev, gsi, triggering, polarity);
if (irq >= 0)
pcibios_penalize_isa_irq(irq, 1);
else
flags |= IORESOURCE_DISABLED;
pnp_add_irq_resource(dev, irq, flags);
}
static void acpi_dev_get_irqresource(struct resource *res, u32 gsi,
u8 triggering, u8 polarity, u8 shareable,
bool legacy)
{
int irq, p, t;
if (!valid_IRQ(gsi)) {
acpi_dev_irqresource_disabled(res, gsi);
return;
}
/*
* In IO-APIC mode, use overrided attribute. Two reasons:
* 1. BIOS bug in DSDT
* 2. BIOS uses IO-APIC mode Interrupt Source Override
*
* We do this only if we are dealing with IRQ() or IRQNoFlags()
* resource (the legacy ISA resources). With modern ACPI 5 devices
* using extended IRQ descriptors we take the IRQ configuration
* from _CRS directly.
*/
if (legacy && !acpi_get_override_irq(gsi, &t, &p)) {
u8 trig = t ? ACPI_LEVEL_SENSITIVE : ACPI_EDGE_SENSITIVE;
u8 pol = p ? ACPI_ACTIVE_LOW : ACPI_ACTIVE_HIGH;
if (triggering != trig || polarity != pol) {
pr_warning("ACPI: IRQ %d override to %s, %s\n", gsi,
t ? "level" : "edge", p ? "low" : "high");
triggering = trig;
polarity = pol;
}
}
res->flags = acpi_dev_irq_flags(triggering, polarity, shareable);
irq = acpi_register_gsi(NULL, gsi, triggering, polarity);
if (irq >= 0) {
res->start = irq;
res->end = irq;
} else {
acpi_dev_irqresource_disabled(res, gsi);
}
}