[S] Change in coreboot[master]: acpi/acpi.c: Add a method to generate IOAPIC DRAM entries from hw

[Arthur Heymans (Code Review)]

Arthur Heymans has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/70267 )

Change subject: acpi/acpi.c: Add a method to generate IOAPIC DRAM entries from hw
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acpi/acpi.c: Add a method to generate IOAPIC DRAM entries from hw

This reads back the ioapic id from hardware.

Change-Id: I214557bbe963d1086f35f96efb1cb47950099eb3
Signed-off-by: Arthur Heymans 
---
M src/acpi/acpi.c
M src/include/acpi/acpi.h
2 files changed, 22 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/67/70267/1

diff --git a/src/acpi/acpi.c b/src/acpi/acpi.c
index c567299..eb41409 100644
--- a/src/acpi/acpi.c
+++ b/src/acpi/acpi.c
@@ -898,6 +898,14 @@
    		SCOPE_IOAPIC, enumeration_id, bus, dev, fn);
 }

+unsigned long acpi_create_dmar_ds_ioapic_from_hw(unsigned long current,
+						 u32 addr, u8 bus, u8 dev, u8 fn)
+{
+	u8 enumeration_id = get_ioapic_id((void *)(uintptr_t)addr);
+	return acpi_create_dmar_ds(current,
+			SCOPE_IOAPIC, enumeration_id, bus, dev, fn);
+}
+
 unsigned long acpi_create_dmar_ds_msi_hpet(unsigned long current,
    u8 enumeration_id, u8 bus, u8 dev, u8 fn)
 {
diff --git a/src/include/acpi/acpi.h b/src/include/acpi/acpi.h
index 57dbc65..f66f054 100644
--- a/src/include/acpi/acpi.h
+++ b/src/include/acpi/acpi.h
@@ -1432,6 +1432,8 @@
 unsigned long acpi_create_dmar_ds_ioapic(unsigned long current,
    				      u8 enumeration_id,
    				      u8 bus, u8 dev, u8 fn);
+unsigned long acpi_create_dmar_ds_ioapic_from_hw(unsigned long current,
+						 u32 addr, u8 bus, u8 dev, u8 fn);
 unsigned long acpi_create_dmar_ds_msi_hpet(unsigned long current,
    					u8 enumeration_id,
    					u8 bus, u8 dev, u8 fn);