device: Add support for multiple PCI segment groups
Add initial support for multiple PCI segment groups. Instead of
modifying secondary in the bus struct introduce a new segment_group
struct element and keep existing common code.
Since all platforms currently only use 1 segment this is not a
functional change. On platforms that support more than 1 segment the
segment has to be set when creating the PCI domain.
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: Ied3313c41896362dd989ee2ab1b1bcdced840aa8
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79927
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Martin Roth <martin.roth@amd.corp-partner.google.com>
diff --git a/src/soc/amd/common/block/acpi/ivrs.c b/src/soc/amd/common/block/acpi/ivrs.c
index 140968c..605c4f5 100644
--- a/src/soc/amd/common/block/acpi/ivrs.c
+++ b/src/soc/amd/common/block/acpi/ivrs.c
@@ -218,7 +218,7 @@
ivhd_40->capability_offset = pci_find_capability(iommu_dev, IOMMU_CAP_ID);
ivhd_40->iommu_base_low = ivhd->iommu_base_low;
ivhd_40->iommu_base_high = ivhd->iommu_base_high;
- ivhd_40->pci_segment_group = 0x0000;
+ ivhd_40->pci_segment_group = nb_dev->bus->segment_group;
ivhd_40->iommu_info = ivhd->iommu_info;
/* For type 40h bits 31:28 and 12:0 are reserved */
ivhd_40->iommu_attributes = ivhd->iommu_feature_info & 0xfffe000;
@@ -275,7 +275,7 @@
ivhd_11->capability_offset = pci_find_capability(iommu_dev, IOMMU_CAP_ID);
ivhd_11->iommu_base_low = ivhd->iommu_base_low;
ivhd_11->iommu_base_high = ivhd->iommu_base_high;
- ivhd_11->pci_segment_group = 0x0000;
+ ivhd_11->pci_segment_group = nb_dev->bus->segment_group;
ivhd_11->iommu_info = ivhd->iommu_info;
ivhd11_attr_ptr = (ivhd11_iommu_attr_t *)&ivhd->iommu_feature_info;
ivhd_11->iommu_attributes.perf_counters = ivhd11_attr_ptr->perf_counters;
@@ -365,7 +365,7 @@
ivhd->flags |= ((mmio_x18_value & MMIO_CTRL_HT_TUN_EN) ?
IVHD_FLAG_HT_TUN_EN : 0);
- ivhd->pci_segment_group = 0x0000;
+ ivhd->pci_segment_group = nb_dev->bus->segment_group;
ivhd->iommu_info = pci_read_config16(iommu_dev,
ivhd->capability_offset + 0x10) & 0x1F;