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, 6 insertions, 0 deletions

diff --git a/src/soc/amd/common/block/include/amdblocks/root_complex.h b/src/soc/amd/common/block/include/amdblocks/root_complex.h
index 9ef5d05925..bfabf973a7 100644
--- a/src/soc/amd/common/block/include/amdblocks/root_complex.h
+++ b/src/soc/amd/common/block/include/amdblocks/root_complex.h
@@ -15,6 +15,11 @@
 
 #define NON_PCI_RES_IDX_AUTO	0
 
+struct domain_iohc_info {
+	uint16_t fabric_id;
+	uint32_t misc_smn_base;
+};
+
 struct non_pci_mmio_reg {
 	uint32_t iohc_misc_offset;
 	uint64_t mask;
@@ -27,6 +32,7 @@ void read_non_pci_resources(struct device *domain, unsigned long *idx);
 void read_soc_memmap_resources(struct device *domain, unsigned long *idx);
 
 uint32_t get_iohc_misc_smn_base(struct device *domain);
+const struct domain_iohc_info *get_iohc_info(size_t *count);
 const struct non_pci_mmio_reg *get_iohc_non_pci_mmio_regs(size_t *count);
 
 signed int get_iohc_fabric_id(struct device *domain);