arch/x86/include/asm/acpi/irqroute.asl

   1 /*
   2  * Copyright (C) 2007-2009 coresystems GmbH
   3  * Copyright (C) 2013 Google Inc.
   4  * Copyright (C) 2016 Bin Meng <bmeng.cn@gmail.com>
   5  *
   6  * Modified from coreboot src/soc/intel/baytrail/acpi/irqroute.asl
   7  *
   8  * SPDX-License-Identifier:     GPL-2.0+
   9  */
  10
  11 Name(\PICM, 0)
  12
  13 /*
  14  * The _PIC method is called by the OS to choose between interrupt
  15  * routing via the i8259 interrupt controller or the APIC.
  16  *
  17  * _PIC is called with a parameter of 0 for i8259 configuration and
  18  * with a parameter of 1 for Local APIC/IOAPIC configuration.
  19  */
  20 Method(\_PIC, 1)
  21 {
  22         /* Remember the OS' IRQ routing choice */
  23         Store(Arg0, PICM)
  24 }
  25
  26 /* PCI interrupt routing */
  27 Method(_PRT) {
  28         If (PICM) {
  29                 Return (Package() {
  30                         #undef PIC_MODE
  31                         #include "irq_helper.h"
  32                         PCI_DEV_PIRQ_ROUTES
  33                 })
  34         } Else {
  35                 Return (Package() {
  36                         #define PIC_MODE
  37                         #include "irq_helper.h"
  38                         PCI_DEV_PIRQ_ROUTES
  39                 })
  40         }
  41
  42 }
  43
  44 /* PCIe downstream ports interrupt routing */
  45 PCIE_BRIDGE_IRQ_ROUTES
  46 #undef PIC_MODE
  47 #include "irq_helper.h"
  48 PCIE_BRIDGE_IRQ_ROUTES