From ae1b2d49cf0ad09ff8f1e3904a9e7b23d6fb423b Mon Sep 17 00:00:00 2001 From: Kyösti Mälkki Date: Mon, 10 Apr 2023 16:45:39 +0300 Subject: soc/intel: Introduce ioapic_get_sci_pin() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit According to ACPI Release 6.5 systems supporting PIC (i8259) interrupt mechanism need to report IRQ vector for the SCI_INT field. In PIC mode only IRQ0..15 are allowed hardware vectors. This change should cover section 5.2.9 to not pass SCI_INT larger than IRQ15. Section 5.2.15.5 needs follow-up work. Care should be taken that ioapic_get_sci_pin() is called after platform code has potentially changed the routing from the default. It appears touched all platforms except siemens/mc_aplX currently program SCI as IRQ9. Change-Id: I723c207f1dcbba5e6fc0452fe1dbd087fad290ee Signed-off-by: Kyösti Mälkki Reviewed-on: https://review.coreboot.org/c/coreboot/+/74326 Tested-by: build bot (Jenkins) Reviewed-by: Tim Wawrzynczak Reviewed-by: Arthur Heymans --- src/include/acpi/acpi.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'src/include/acpi') diff --git a/src/include/acpi/acpi.h b/src/include/acpi/acpi.h index 58db58cdd0..2c8f2efcc4 100644 --- a/src/include/acpi/acpi.h +++ b/src/include/acpi/acpi.h @@ -1338,12 +1338,15 @@ int acpi_create_madt_ioapic(acpi_madt_ioapic_t *ioapic, u8 id, u32 addr, int acpi_create_madt_ioapic_from_hw(acpi_madt_ioapic_t *ioapic, u32 addr); int acpi_create_madt_irqoverride(acpi_madt_irqoverride_t *irqoverride, u8 bus, u8 source, u32 gsirq, u16 flags); +int acpi_create_madt_sci_override(acpi_madt_irqoverride_t *irqoverride); unsigned long acpi_create_madt_one_lapic(unsigned long current, u32 cpu, u32 apic); unsigned long acpi_create_madt_lapics_with_nmis(unsigned long current); unsigned long acpi_create_madt_lapic_nmis(unsigned long current); +u16 acpi_sci_int(void); + int acpi_create_srat_lapic(acpi_srat_lapic_t *lapic, u8 node, u8 apic); int acpi_create_srat_x2apic(acpi_srat_x2apic_t *x2apic, u32 node, u32 apic); int acpi_create_srat_mem(acpi_srat_mem_t *mem, u8 node, u32 basek, u32 sizek, -- cgit v1.2.3