Aamir Bohra has uploaded this change for review.

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soc/intel/common/block/acpi: [WIP]Add provision to inject PCI PIRQ ACPI mapping

This implementation adds provision to inject PCI IRQ ACPI mapping
into DSDT acpi table.

Change-Id: I60ae7cbcfe53c4cb21e88997b06ec8af4b59b844
Signed-off-by: Aamir Bohra <aamir.bohra@intel.com>
---
M src/soc/intel/common/block/acpi/acpi.c
1 file changed, 40 insertions(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/58/34658/1

diff --git a/src/soc/intel/common/block/acpi/acpi.c b/src/soc/intel/common/block/acpi/acpi.c
index 3a34c79..b7b5d57 100644
--- a/src/soc/intel/common/block/acpi/acpi.c
+++ b/src/soc/intel/common/block/acpi/acpi.c
@@ -25,6 +25,7 @@
 #include <cpu/x86/msr.h>
 #include <cpu/x86/smm.h>
 #include <intelblocks/acpi.h>
+#include <intelblocks/irq.h>
 #include <intelblocks/msr.h>
 #include <intelblocks/pmclib.h>
 #include <intelblocks/uart.h>
@@ -228,7 +229,37 @@
 {
 }
 
-void southbridge_inject_dsdt(struct device *device)
+#if CONFIG(SOC_INTEL_COMMON_ITSS_INTERRUPT_OVERRIDE)
+
+static void generate_pci_pirq_entries(void)
+{
+		uint8_t num_entries;
+		struct dev_irq *irqlist;
+
+		irqlist  = (struct dev_irq *)soc_get_irq_config(&num_entries);
+		if (!num_entries)
+			return;
+		acpigen_write_scope("\\_SB.PCI0");
+		acpigen_write_name("PICP");
+		acpigen_write_package(num_entries);
+
+		for (int i = 0; i < num_entries; i++) {
+			acpigen_write_package(4);
+			acpigen_write_dword((irqlist->slot << 16) | 0xffff);
+			acpigen_write_byte(irqlist->int_pin - 1);
+			acpigen_write_zero();
+			acpigen_write_byte(irqlist->int_line);
+			acpigen_pop_len();
+			irqlist++;
+		}
+
+		acpigen_pop_len();
+		acpigen_pop_len();
+
+}
+#endif
+
+static void generate_gnvs_entry(void)
 {
 	struct global_nvs_t *gnvs;
 
@@ -249,6 +280,14 @@
 		acpigen_write_name_dword("NVSA", (uintptr_t) gnvs);
 		acpigen_pop_len();
 	}
+
+}
+void southbridge_inject_dsdt(struct device *device)
+{
+	generate_gnvs_entry();
+#if CONFIG(SOC_INTEL_COMMON_ITSS_INTERRUPT_OVERRIDE)
+	generate_pci_pirq_entries();
+#endif
 }
 
 static int calculate_power(int tdp, int p1_ratio, int ratio)

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