soc/intel/skylake: Move acpi_sci_irq() to acpi.c
Change-Id: I8bc170bd715e13d46fcedc0f796e2a99786791c0
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/52462
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>
Reviewed-by: Frans Hendriks <fhendriks@eltan.com>
diff --git a/src/soc/intel/skylake/acpi.c b/src/soc/intel/skylake/acpi.c
index 3434aac..51fea18 100644
--- a/src/soc/intel/skylake/acpi.c
+++ b/src/soc/intel/skylake/acpi.c
@@ -475,6 +475,34 @@
return current;
}
+int acpi_sci_irq(void)
+{
+ int scis = pci_read_config32(PCH_DEV_PMC, ACTL) & SCI_IRQ_SEL;
+ int sci_irq = 9;
+
+ /* Determine how SCI is routed. */
+ switch (scis) {
+ case SCIS_IRQ9:
+ case SCIS_IRQ10:
+ case SCIS_IRQ11:
+ sci_irq = scis - SCIS_IRQ9 + 9;
+ break;
+ case SCIS_IRQ20:
+ case SCIS_IRQ21:
+ case SCIS_IRQ22:
+ case SCIS_IRQ23:
+ sci_irq = scis - SCIS_IRQ20 + 20;
+ break;
+ default:
+ printk(BIOS_DEBUG, "Invalid SCI route! Defaulting to IRQ9.\n");
+ sci_irq = 9;
+ break;
+ }
+
+ printk(BIOS_DEBUG, "SCI is IRQ%d\n", sci_irq);
+ return sci_irq;
+}
+
unsigned long acpi_madt_irq_overrides(unsigned long current)
{
int sci = acpi_sci_irq();