src/mainboard/aopen/dxplplusu/acpi_tables.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <acpi/acpi.h>
   4 #include <device/pci_def.h>
   5
   6 unsigned long acpi_fill_madt(unsigned long current)
   7 {
   8         struct device *bdev, *dev = NULL;
   9         struct resource *res = NULL;
  10
  11         current = acpi_create_madt_lapics_with_nmis(current);
  12
  13         /* Southbridge IOAPIC */
  14         current += acpi_create_madt_ioapic_from_hw((acpi_madt_ioapic_t *)current, 0xfec00000);
  15
  16         bdev = pcidev_on_root(2, 0);
  17         /* P64H2 Bus B IOAPIC */
  18         if (bdev)
  19                 dev = pcidev_path_behind(bdev->link_list, PCI_DEVFN(28, 0));
  20         if (dev) {
  21                 res = find_resource(dev, PCI_BASE_ADDRESS_0);
  22                 current += acpi_create_madt_ioapic_from_hw((acpi_madt_ioapic_t *)current, res->base);
  23         }
  24
  25         /* P64H2 Bus A IOAPIC */
  26         if (bdev)
  27                 dev = pcidev_path_behind(bdev->link_list, PCI_DEVFN(30, 0));
  28         if (dev) {
  29                 res = find_resource(dev, PCI_BASE_ADDRESS_0);
  30                 current += acpi_create_madt_ioapic_from_hw((acpi_madt_ioapic_t *)current, res->base);
  31         }
  32
  33         /* Map ISA IRQ 0 to IRQ 2 */
  34         current += acpi_create_madt_irqoverride((acpi_madt_irqoverride_t *)current, 1, 0, 2, 0);
  35
  36         /* IRQ9 differs from ISA standard - ours is active high, level-triggered */
  37         current += acpi_create_madt_irqoverride((acpi_madt_irqoverride_t *)current, 0, 9, 9, 0xD);
  38
  39         return current;
  40 }