soc/amd/*/root_complex: introduce and use domain_iohc_info struct

Instead of implementing the functions get_iohc_misc_smn_base and
get_iohc_fabric_id in the SoC code, move those functions to the common
AMD code, and implement get_iohc_info in the SoC code that returns a
pointer to and the size of a SoC-specific array of domain_iohc_info
structs that contains the info needed by the common code instead. This
allows to iterate over the domain_iohc_info structs which will be used
in a later patch to find the PSP MMIO base address in both ramstage and
smm.

TEST=Mandolin still boots and all non-PCI MIO resources are still
reported to the resource allocator

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: Ifce3d2b540d14ba3cba36f7cbf248fb7c63483fe
Reviewed-on: https://review.coreboot.org/c/coreboot/+/83443
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
Reviewed-by: Varshit Pandya <pandyavarshit@gmail.com>
Reviewed-by: Martin Roth <martin.roth@amd.corp-partner.google.com>

1 files changed, 10 insertions, 12 deletions

diff --git a/src/soc/amd/phoenix/root_complex.c b/src/soc/amd/phoenix/root_complex.c
index 918b7bd9bd..7fed3bdb31 100644
--- a/src/soc/amd/phoenix/root_complex.c
+++ b/src/soc/amd/phoenix/root_complex.c
@@ -105,9 +105,17 @@ struct device_operations phoenix_root_complex_operations = {
 	.acpi_fill_ssdt		= root_complex_fill_ssdt,
 };
 
-uint32_t get_iohc_misc_smn_base(struct device *domain)
+static const struct domain_iohc_info iohc_info[] = {
+	[0] = {
+		.fabric_id = IOMS0_FABRIC_ID,
+		.misc_smn_base = SMN_IOHC_MISC_BASE_13B1,
+	},
+};
+
+const struct domain_iohc_info *get_iohc_info(size_t *count)
 {
-	return SMN_IOHC_MISC_BASE_13B1;
+	*count = ARRAY_SIZE(iohc_info);
+	return iohc_info;
 }
 
 static const struct non_pci_mmio_reg non_pci_mmio[] = {
@@ -132,13 +140,3 @@ const struct non_pci_mmio_reg *get_iohc_non_pci_mmio_regs(size_t *count)
 	*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;
-	}
-}