Change in coreboot[master]: [WIP/NOTFORMERGE]sb/intel/i82801ix: Automatically generate pirq ACPI

[Arthur Heymans (Code Review)]

Arthur Heymans has uploaded this change for review. ( https://review.coreboot.org/22802

Change subject: [WIP/NOTFORMERGE]sb/intel/i82801ix: Automatically generate pirq ACPI
......................................................................

[WIP/NOTFORMERGE]sb/intel/i82801ix: Automatically generate pirq ACPI

Does not work at all...

Change-Id: Iee38eaee8d443286cdcecc4f9df0b713639da669
Signed-off-by: Arthur Heymans 
---
M src/southbridge/intel/i82801ix/lpc.c
1 file changed, 45 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/02/22802/1

diff --git a/src/southbridge/intel/i82801ix/lpc.c b/src/southbridge/intel/i82801ix/lpc.c
index bc45b9d..65d6dae 100644
--- a/src/southbridge/intel/i82801ix/lpc.c
+++ b/src/southbridge/intel/i82801ix/lpc.c
@@ -562,8 +562,53 @@
 {
    device_t dev = dev_find_slot(0, PCI_DEVFN(0x1f,0));
    config_t *chip = dev->chip_info;
+	device_t irq_dev;
+	u8 int_pin;
+
+	const char *link_list[4] = {"\_SB.PCI0.LPCB.LNKA",
+				    "\_SB.PCI0.LPCB.LNKB",
+				    "\_SB.PCI0.LPCB.LNKC",
+				    "\_SB.PCI0.LPCB.LNKD"};

intel_acpi_pcie_hotplug_generator(chip->pcie_hotplug_map, 8);
+
+	acpigen_write_scope("\_SB");
+	acpigen_write_device("PCI0");
+	acpigen_write_method("_PRT", 0);
+	acpigen_write_if();
+	acpigen_emit_namestring("PICM");
+	acpigen_emit_byte(RETURN_OP);
+	acpigen_emit_byte(PACKAGE_OP);
+	for (irq_dev = all_devices; irq_dev; irq_dev = irq_dev->next) {
+		int_pin = pci_read_config8(irq_dev, PCI_INTERRUPT_PIN);
+		acpigen_write_package(4);
+		acpigen_emit_dword((((irq_dev->bus->secondary >> 11) & 0x1f) << 16) & 0xffff);
+		acpigen_emit_dword(int_pin);
+		acpigen_emit_dword(0);
+		acpigen_emit_dword(16 + (int_pin - 1));
+		acpigen_pop_len();
+	}
+	acpigen_pop_len(); /* package */
+	acpigen_pop_len(); /* return PICM */
+	acpigen_pop_len(); /* if PICM */
+	acpigen_write_else();
+	acpigen_emit_byte(RETURN_OP);
+	acpigen_emit_byte(PACKAGE_OP);
+	for (irq_dev = all_devices; irq_dev; irq_dev = irq_dev->next) {
+		int_pin = pci_read_config8(irq_dev, PCI_INTERRUPT_PIN);
+		acpigen_write_package(4);
+		acpigen_emit_dword((((irq_dev->bus->secondary >> 11) & 0x1f) << 16) & 0xffff);
+		acpigen_emit_dword(int_pin);
+		acpigen_write_string(link_list[int_pin - 1]);
+		acpigen_emit_dword(0);
+		acpigen_pop_len();
+	}
+	acpigen_pop_len(); /* package */
+	acpigen_pop_len(); /* return else PICM */
+	acpigen_pop_len(); /* else PICM*/
+	acpigen_pop_len(); /* _PRT */
+	acpigen_pop_len(); /* PCI0 */
+	acpigen_pop_len(); /* _SB */
 }

static struct pci_operations pci_ops = {