soc/amd/*/root_complex: introduce get_iohc_fabric_id
Implement get_iohc_fabric_id for each SoC that translates the coreboot
domain number to the fabric ID of the corresponding PCI root. This
allows the primary domain to have the number 0 even though the
destination data fabric ID will be non-zero. Keeping the primary domain
number 0 allows to use config_of_soc() which can be resolved at link
time and not need to dynamically find the SoC device to get the config.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I6538a777619eed974b449fc70d3fe3084ba447dd
Reviewed-on: https://review.coreboot.org/c/coreboot/+/77168
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martin.roth@amd.corp-partner.google.com>
diff --git a/src/soc/amd/picasso/root_complex.c b/src/soc/amd/picasso/root_complex.c
index b74a132..f347dd0 100644
--- a/src/soc/amd/picasso/root_complex.c
+++ b/src/soc/amd/picasso/root_complex.c
@@ -213,3 +213,13 @@
*count = ARRAY_SIZE(non_pci_mmio);
return non_pci_mmio;
}
+
+signed int get_iohc_fabric_id(struct device *domain)
+{
+ switch (domain->path.domain.domain) {
+ case 0:
+ return IOMS0_FABRIC_ID;
+ default:
+ return -1;
+ }
+}