soc/intel/xeon_sp/gnr: Add soc_pci_domain_fill_ssdt

Domain device objects are created with HID/CID/UID/_OSC/_PXM

Dynamic domain SSDT generation could benefit the support of SoCs with
multiple SKUs, or the case where one set of codes supports multiple
SoCs. One possible side-effect might be the extra performance cost for
generating these tables, which should not bring big impact on high
performance server CPUs.

GNR codes run with dynamic domain SSDT generation to fit for both
GraniteRapids and SierraForest SoCs.

TEST=Build on intel/avenuecity CRB
TEST=Build on intel/beechnutcity CRB

Change-Id: I28bfdf74d8044235f79f67d832860d8b4306670c
Signed-off-by: Shuo Liu <shuo.liu@intel.com>
Signed-off-by: Jincheng Li <jincheng.li@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81374
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Lean Sheng Tan <sheng.tan@9elements.com>

4 files changed, 70 insertions, 1 deletions

diff --git a/src/soc/intel/xeon_sp/chip_gen6.c b/src/soc/intel/xeon_sp/chip_gen6.c
index 8bbfbe871b..686b3e4dcf 100644
--- a/src/soc/intel/xeon_sp/chip_gen6.c
+++ b/src/soc/intel/xeon_sp/chip_gen6.c
@@ -61,6 +61,12 @@ static void iio_pci_domain_read_resources(struct device *dev)
 			pr->Mmio64Base, pr->Mmio64Limit + 1);
 }
 
+static void iio_pci_domain_fill_ssdt(const struct device *domain)
+{
+	soc_pci_domain_fill_ssdt(domain);
+	pci_domain_fill_ssdt(domain);
+}
+
 static struct device_operations iio_pcie_domain_ops = {
 	.read_resources = iio_pci_domain_read_resources,
 	.set_resources = pci_domain_set_resources,
@@ -68,7 +74,7 @@ static struct device_operations iio_pcie_domain_ops = {
 #if CONFIG(HAVE_ACPI_TABLES)
 	.acpi_name = soc_acpi_name,
 	.write_acpi_tables = northbridge_write_acpi_tables,
-	.acpi_fill_ssdt	= pci_domain_fill_ssdt,
+	.acpi_fill_ssdt	= iio_pci_domain_fill_ssdt,
 #endif
 };
 
diff --git a/src/soc/intel/xeon_sp/gnr/acpi/uncore.asl b/src/soc/intel/xeon_sp/gnr/acpi/uncore.asl
new file mode 100644
index 0000000000..bc28d62f42
--- /dev/null
+++ b/src/soc/intel/xeon_sp/gnr/acpi/uncore.asl
@@ -0,0 +1,5 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <soc/intel/xeon_sp/acpi/iiostack.asl>
+
+/* TODO: Add other uncore specific ASL files based on needs */
diff --git a/src/soc/intel/xeon_sp/gnr/soc_acpi.c b/src/soc/intel/xeon_sp/gnr/soc_acpi.c
index 6f1df7c386..c91ed16076 100644
--- a/src/soc/intel/xeon_sp/gnr/soc_acpi.c
+++ b/src/soc/intel/xeon_sp/gnr/soc_acpi.c
@@ -1,10 +1,14 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
+#include <acpi/acpigen.h>
+#include <acpi/acpigen_pci.h>
 #include <assert.h>
 #include <intelblocks/acpi.h>
 #include <intelblocks/pcr.h>
 #include <intelblocks/itss.h>
 #include <soc/acpi.h>
+#include <soc/chip_common.h>
+#include <soc/numa.h>
 #include <soc/soc_util.h>
 #include <soc/util.h>
 #include <soc/itss.h>
@@ -39,3 +43,55 @@ void soc_power_states_generation(int core, int cores_per_package)
 {
 	generate_p_state_entries(core, cores_per_package);
 }
+
+static uint32_t get_granted_pcie_features(void)
+{
+	return PCIE_NATIVE_HOTPLUG_CONTROL | PCIE_PME_CONTROL |
+		PCIE_CAP_STRUCTURE_CONTROL | PCIE_LTR_CONTROL |
+		PCIE_AER_CONTROL;
+}
+
+static uint32_t get_granted_cxl_features(void)
+{
+	return CXL_ERROR_REPORTING_CONTROL;
+}
+
+void soc_pci_domain_fill_ssdt(const struct device *domain)
+{
+	const char *name = acpi_device_name(domain);
+	if (!name)
+		return;
+
+	acpigen_write_scope(acpi_device_scope(domain));
+	acpigen_write_device(name);
+
+	if (is_cxl_domain(domain)) {
+		acpigen_write_name("_HID");
+		acpigen_emit_eisaid("ACPI0016");
+		acpigen_write_name("_CID");
+		acpigen_write_package(2);
+		acpigen_emit_eisaid("PNP0A08");
+		acpigen_emit_eisaid("PNP0A03");
+		acpigen_pop_len();
+	} else {
+		acpigen_write_name("_HID");
+		acpigen_emit_eisaid("PNP0A08");
+		acpigen_write_name("_CID");
+		acpigen_emit_eisaid("PNP0A03");
+	}
+	acpigen_write_name("_UID");
+	acpigen_write_string(name);
+
+	acpigen_write_name("_PXM");
+	acpigen_write_integer(device_to_pd(domain));
+
+	/* _OSC */
+	acpigen_write_OSC_pci_domain_fixed_caps(domain,
+		get_granted_pcie_features(),
+		is_cxl_domain(domain),
+		get_granted_cxl_features()
+		);
+
+	acpigen_pop_len();
+	acpigen_pop_len();
+}
diff --git a/src/soc/intel/xeon_sp/include/soc/chip_common.h b/src/soc/intel/xeon_sp/include/soc/chip_common.h
index 3f4c77e15f..c5553c0f5f 100644
--- a/src/soc/intel/xeon_sp/include/soc/chip_common.h
+++ b/src/soc/intel/xeon_sp/include/soc/chip_common.h
@@ -92,4 +92,6 @@ void unlock_pam_regions(void);
 
 size_t vtd_probe_bar_size(struct device *dev);
 
+void soc_pci_domain_fill_ssdt(const struct device *domain);
+
 #endif /* _CHIP_COMMON_H_ */