soc/amd/common/data_fabric/domain: introduce add_pci_cfg_resources

Since reporting the PCI ECAM MMCONF MMIO region and the IO ports for the
legacy PCI config space access is needed on all AMD SoCs, implement a
common add_pci_cfg_resources function that reports both and gets called
from amd_pci_domain_read_resources and don't report those in the SoC-
specific code any more. The only functional change is that on Genoa now
the IO ports used for the legacy PCI config space access get reserved.

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: Ibbcc2aea4f25b6dc68fdf7f360e5a4ce53f6d850
Reviewed-on: https://review.coreboot.org/c/coreboot/+/80270
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>

7 files changed, 8 insertions, 22 deletions

diff --git a/src/soc/amd/cezanne/root_complex.c b/src/soc/amd/cezanne/root_complex.c
index 25867408bc..876f790718 100644
--- a/src/soc/amd/cezanne/root_complex.c
+++ b/src/soc/amd/cezanne/root_complex.c
@@ -111,8 +111,6 @@ void read_soc_memmap_resources(struct device *dev, unsigned long *idx)
 	early_reserved_dram_start = e->base;
 	early_reserved_dram_end = e->base + e->size;
 
-	fixed_io_range_reserved(dev, (*idx)++, PCI_IO_CONFIG_INDEX, PCI_IO_CONFIG_PORT_COUNT);
-
 	/* 0x0 - 0x9ffff */
 	ram_range(dev, (*idx)++, 0, 0xa0000);
 
@@ -134,8 +132,6 @@ void read_soc_memmap_resources(struct device *dev, unsigned long *idx)
 	 */
 	ram_from_to(dev, (*idx)++, early_reserved_dram_end, mem_usable);
 
-	mmconf_resource(dev, (*idx)++);
-
 	/* Reserve fixed IOMMU MMIO region */
 	mmio_range(dev, (*idx)++, IOMMU_RESERVED_MMIO_BASE, IOMMU_RESERVED_MMIO_SIZE);
 
diff --git a/src/soc/amd/common/block/data_fabric/domain.c b/src/soc/amd/common/block/data_fabric/domain.c
index 65735574d1..f5d7216c04 100644
--- a/src/soc/amd/common/block/data_fabric/domain.c
+++ b/src/soc/amd/common/block/data_fabric/domain.c
@@ -191,6 +191,12 @@ static void add_data_fabric_io_regions(struct device *domain, unsigned long *idx
 	}
 }
 
+static void add_pci_cfg_resources(struct device *domain, unsigned long *idx)
+{
+	fixed_io_range_reserved(domain, (*idx)++, PCI_IO_CONFIG_INDEX, PCI_IO_CONFIG_PORT_COUNT);
+	mmconf_resource(domain, (*idx)++);
+}
+
 void amd_pci_domain_read_resources(struct device *domain)
 {
 	unsigned long idx = 0;
@@ -203,6 +209,8 @@ void amd_pci_domain_read_resources(struct device *domain)
 
 	/* Only add the SoC's DRAM memory map and fixed resources once */
 	if (domain->path.domain.domain == 0) {
+		add_pci_cfg_resources(domain, &idx);
+
 		read_soc_memmap_resources(domain, &idx);
 	}
 }
diff --git a/src/soc/amd/glinda/root_complex.c b/src/soc/amd/glinda/root_complex.c
index 37d189e64e..9d83f6fc52 100644
--- a/src/soc/amd/glinda/root_complex.c
+++ b/src/soc/amd/glinda/root_complex.c
@@ -126,8 +126,6 @@ void read_soc_memmap_resources(struct device *dev, unsigned long *idx)
 	early_reserved_dram_start = e->base;
 	early_reserved_dram_end = e->base + e->size;
 
-	fixed_io_range_reserved(dev, (*idx)++, PCI_IO_CONFIG_INDEX, PCI_IO_CONFIG_PORT_COUNT);
-
 	/* 0x0 - 0x9ffff */
 	ram_range(dev, (*idx)++, 0, 0xa0000);
 
@@ -149,8 +147,6 @@ void read_soc_memmap_resources(struct device *dev, unsigned long *idx)
 	 */
 	ram_from_to(dev, (*idx)++, early_reserved_dram_end, mem_usable);
 
-	mmconf_resource(dev, (*idx)++);
-
 	/* Reserve fixed IOMMU MMIO region */
 	mmio_range(dev, (*idx)++, IOMMU_RESERVED_MMIO_BASE, IOMMU_RESERVED_MMIO_SIZE);
 
diff --git a/src/soc/amd/mendocino/root_complex.c b/src/soc/amd/mendocino/root_complex.c
index 7291058e3f..556124038a 100644
--- a/src/soc/amd/mendocino/root_complex.c
+++ b/src/soc/amd/mendocino/root_complex.c
@@ -154,8 +154,6 @@ void read_soc_memmap_resources(struct device *dev, unsigned long *idx)
 	early_reserved_dram_start = e->base;
 	early_reserved_dram_end = e->base + e->size;
 
-	fixed_io_range_reserved(dev, (*idx)++, PCI_IO_CONFIG_INDEX, PCI_IO_CONFIG_PORT_COUNT);
-
 	/* 0x0 - 0x9ffff */
 	ram_range(dev, (*idx)++, 0, 0xa0000);
 
@@ -177,8 +175,6 @@ void read_soc_memmap_resources(struct device *dev, unsigned long *idx)
 	 */
 	ram_from_to(dev, (*idx)++, early_reserved_dram_end, mem_usable);
 
-	mmconf_resource(dev, (*idx)++);
-
 	/* Reserve fixed IOMMU MMIO region */
 	mmio_range(dev, (*idx)++, IOMMU_RESERVED_MMIO_BASE, IOMMU_RESERVED_MMIO_SIZE);
 
diff --git a/src/soc/amd/phoenix/root_complex.c b/src/soc/amd/phoenix/root_complex.c
index 3e61df1a01..1394b2c96b 100644
--- a/src/soc/amd/phoenix/root_complex.c
+++ b/src/soc/amd/phoenix/root_complex.c
@@ -126,8 +126,6 @@ void read_soc_memmap_resources(struct device *dev, unsigned long *idx)
 	early_reserved_dram_start = e->base;
 	early_reserved_dram_end = e->base + e->size;
 
-	fixed_io_range_reserved(dev, (*idx)++, PCI_IO_CONFIG_INDEX, PCI_IO_CONFIG_PORT_COUNT);
-
 	/* 0x0 - 0x9ffff */
 	ram_range(dev, (*idx)++, 0, 0xa0000);
 
@@ -149,8 +147,6 @@ void read_soc_memmap_resources(struct device *dev, unsigned long *idx)
 	 */
 	ram_from_to(dev, (*idx)++, early_reserved_dram_end, mem_usable);
 
-	mmconf_resource(dev, (*idx)++);
-
 	/* Reserve fixed IOMMU MMIO region */
 	mmio_range(dev, (*idx)++, IOMMU_RESERVED_MMIO_BASE, IOMMU_RESERVED_MMIO_SIZE);
 
diff --git a/src/soc/amd/picasso/root_complex.c b/src/soc/amd/picasso/root_complex.c
index ffe4f66f5b..1e702ab8e5 100644
--- a/src/soc/amd/picasso/root_complex.c
+++ b/src/soc/amd/picasso/root_complex.c
@@ -111,8 +111,6 @@ void read_soc_memmap_resources(struct device *dev, unsigned long *idx)
 	early_reserved_dram_start = e->base;
 	early_reserved_dram_end = e->base + e->size;
 
-	fixed_io_range_reserved(dev, (*idx)++, PCI_IO_CONFIG_INDEX, PCI_IO_CONFIG_PORT_COUNT);
-
 	/* 0x0 - 0x9ffff */
 	ram_range(dev, (*idx)++, 0, 0xa0000);
 
@@ -132,8 +130,6 @@ void read_soc_memmap_resources(struct device *dev, unsigned long *idx)
 	 * cbmem_top() accounts for low UMA and TSEG if they are used. */
 	ram_from_to(dev, (*idx)++, early_reserved_dram_end, mem_usable);
 
-	mmconf_resource(dev, (*idx)++);
-
 	/* Reserve fixed IOMMU MMIO region */
 	mmio_range(dev, (*idx)++, IOMMU_RESERVED_MMIO_BASE, IOMMU_RESERVED_MMIO_SIZE);
 
diff --git a/src/vendorcode/amd/opensil/genoa_poc/memmap.c b/src/vendorcode/amd/opensil/genoa_poc/memmap.c
index 1e633d9d7d..39b27ec293 100644
--- a/src/vendorcode/amd/opensil/genoa_poc/memmap.c
+++ b/src/vendorcode/amd/opensil/genoa_poc/memmap.c
@@ -114,8 +114,6 @@ void add_opensil_memmap(struct device *dev, unsigned long *idx)
 	if (mem_usable != top_mem)
 		reserved_ram_from_to(dev, (*idx)++, mem_usable, top_mem);
 
-	mmconf_resource(dev, (*idx)++);
-
 	// Check if we're done
 	if (top_of_mem <= 0x100000000)
 		return;