1 /* SPDX-License-Identifier: GPL-2.0-only */
2
3 #include <acpi/acpigen_pci.h>
4 #include <amdblocks/ioapic.h>
5 #include <amdblocks/data_fabric.h>
6 #include <amdblocks/memmap.h>
7 #include <amdblocks/root_complex.h>
8 #include <amdblocks/smn.h>
9 #include <arch/ioapic.h>
10 #include <console/console.h>
11 #include <device/device.h>
12 #include <types.h>
13
14 #include <vendorcode/amd/opensil/genoa_poc/opensil.h>
15
16 #define IOHC_IOAPIC_BASE_ADDR_LO 0x2f0
17
read_soc_memmap_resources(struct device * domain,unsigned long * idx)18 void read_soc_memmap_resources(struct device *domain, unsigned long *idx)
19 {
20 read_lower_soc_memmap_resources(domain, idx);
21
22 add_opensil_memmap(domain, idx);
23 }
24
genoa_domain_set_resources(struct device * domain)25 static void genoa_domain_set_resources(struct device *domain)
26 {
27 if (domain->downstream->bridge_ctrl & PCI_BRIDGE_CTL_VGA) {
28 printk(BIOS_DEBUG, "Setting VGA decoding for domain 0x%x\n",
29 domain->path.domain.domain);
30 const union df_vga_en vga_en = {
31 .ve = 1,
32 .dst_fabric_id = get_iohc_fabric_id(domain),
33 };
34 data_fabric_broadcast_write32(DF_VGA_EN, vga_en.raw);
35 }
36
37 pci_domain_set_resources(domain);
38
39 /* Enable IOAPIC memory decoding */
40 struct resource *res = probe_resource(domain, IOMMU_IOAPIC_IDX);
41 if (res) {
42 const uint32_t iohc_misc_base = get_iohc_misc_smn_base(domain);
43 uint32_t ioapic_base = smn_read32(iohc_misc_base | IOHC_IOAPIC_BASE_ADDR_LO);
44 ioapic_base |= (1 << 0);
45 smn_write32(iohc_misc_base | IOHC_IOAPIC_BASE_ADDR_LO, ioapic_base);
46 }
47 }
48
genoa_domain_acpi_name(const struct device * domain)49 static const char *genoa_domain_acpi_name(const struct device *domain)
50 {
51 const char *domain_acpi_names[4] = {
52 "S0B0",
53 "S0B1",
54 "S0B2",
55 "S0B3",
56 };
57
58 if (domain->path.domain.domain < ARRAY_SIZE(domain_acpi_names))
59 return domain_acpi_names[domain->path.domain.domain];
60
61 return NULL;
62 }
63
64 struct device_operations genoa_pci_domain_ops = {
65 .read_resources = amd_pci_domain_read_resources,
66 .set_resources = genoa_domain_set_resources,
67 .scan_bus = amd_pci_domain_scan_bus,
68 .init = amd_pci_domain_init,
69 .acpi_name = genoa_domain_acpi_name,
70 .acpi_fill_ssdt = pci_domain_fill_ssdt,
71 };
72