| #include "qemu/osdep.h" |
| #include "hw/acpi/aml-build.h" |
| #include "hw/pci-host/gpex.h" |
| #include "hw/arm/virt.h" |
| #include "hw/pci/pci_bus.h" |
| #include "hw/pci/pci_bridge.h" |
| #include "hw/pci/pcie_host.h" |
| #include "hw/acpi/cxl.h" |
| |
| static void acpi_dsdt_add_pci_route_table(Aml *dev, uint32_t irq) |
| { |
| Aml *method, *crs; |
| int i, slot_no; |
| |
| /* Declare the PCI Routing Table. */ |
| Aml *rt_pkg = aml_varpackage(PCI_SLOT_MAX * PCI_NUM_PINS); |
| for (slot_no = 0; slot_no < PCI_SLOT_MAX; slot_no++) { |
| for (i = 0; i < PCI_NUM_PINS; i++) { |
| int gsi = (i + slot_no) % PCI_NUM_PINS; |
| Aml *pkg = aml_package(4); |
| aml_append(pkg, aml_int((slot_no << 16) | 0xFFFF)); |
| aml_append(pkg, aml_int(i)); |
| aml_append(pkg, aml_name("GSI%d", gsi)); |
| aml_append(pkg, aml_int(0)); |
| aml_append(rt_pkg, pkg); |
| } |
| } |
| aml_append(dev, aml_name_decl("_PRT", rt_pkg)); |
| |
| /* Create GSI link device */ |
| for (i = 0; i < PCI_NUM_PINS; i++) { |
| uint32_t irqs = irq + i; |
| Aml *dev_gsi = aml_device("GSI%d", i); |
| aml_append(dev_gsi, aml_name_decl("_HID", aml_string("PNP0C0F"))); |
| aml_append(dev_gsi, aml_name_decl("_UID", aml_int(i))); |
| crs = aml_resource_template(); |
| aml_append(crs, |
| aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH, |
| AML_EXCLUSIVE, &irqs, 1)); |
| aml_append(dev_gsi, aml_name_decl("_PRS", crs)); |
| crs = aml_resource_template(); |
| aml_append(crs, |
| aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH, |
| AML_EXCLUSIVE, &irqs, 1)); |
| aml_append(dev_gsi, aml_name_decl("_CRS", crs)); |
| method = aml_method("_SRS", 1, AML_NOTSERIALIZED); |
| aml_append(dev_gsi, method); |
| aml_append(dev, dev_gsi); |
| } |
| } |
| |
| static void acpi_dsdt_add_pci_osc(Aml *dev) |
| { |
| Aml *method, *UUID, *ifctx, *ifctx1, *elsectx, *buf; |
| |
| /* Declare an _OSC (OS Control Handoff) method */ |
| aml_append(dev, aml_name_decl("SUPP", aml_int(0))); |
| aml_append(dev, aml_name_decl("CTRL", aml_int(0))); |
| method = aml_method("_OSC", 4, AML_NOTSERIALIZED); |
| aml_append(method, |
| aml_create_dword_field(aml_arg(3), aml_int(0), "CDW1")); |
| |
| /* PCI Firmware Specification 3.0 |
| * 4.5.1. _OSC Interface for PCI Host Bridge Devices |
| * The _OSC interface for a PCI/PCI-X/PCI Express hierarchy is |
| * identified by the Universal Unique IDentifier (UUID) |
| * 33DB4D5B-1FF7-401C-9657-7441C03DD766 |
| */ |
| UUID = aml_touuid("33DB4D5B-1FF7-401C-9657-7441C03DD766"); |
| ifctx = aml_if(aml_equal(aml_arg(0), UUID)); |
| aml_append(ifctx, |
| aml_create_dword_field(aml_arg(3), aml_int(4), "CDW2")); |
| aml_append(ifctx, |
| aml_create_dword_field(aml_arg(3), aml_int(8), "CDW3")); |
| aml_append(ifctx, aml_store(aml_name("CDW2"), aml_name("SUPP"))); |
| aml_append(ifctx, aml_store(aml_name("CDW3"), aml_name("CTRL"))); |
| |
| /* |
| * Allow OS control for all 5 features: |
| * PCIeHotplug SHPCHotplug PME AER PCIeCapability. |
| */ |
| aml_append(ifctx, aml_and(aml_name("CTRL"), aml_int(0x1F), |
| aml_name("CTRL"))); |
| |
| ifctx1 = aml_if(aml_lnot(aml_equal(aml_arg(1), aml_int(0x1)))); |
| aml_append(ifctx1, aml_or(aml_name("CDW1"), aml_int(0x08), |
| aml_name("CDW1"))); |
| aml_append(ifctx, ifctx1); |
| |
| ifctx1 = aml_if(aml_lnot(aml_equal(aml_name("CDW3"), aml_name("CTRL")))); |
| aml_append(ifctx1, aml_or(aml_name("CDW1"), aml_int(0x10), |
| aml_name("CDW1"))); |
| aml_append(ifctx, ifctx1); |
| |
| aml_append(ifctx, aml_store(aml_name("CTRL"), aml_name("CDW3"))); |
| aml_append(ifctx, aml_return(aml_arg(3))); |
| aml_append(method, ifctx); |
| |
| elsectx = aml_else(); |
| aml_append(elsectx, aml_or(aml_name("CDW1"), aml_int(4), |
| aml_name("CDW1"))); |
| aml_append(elsectx, aml_return(aml_arg(3))); |
| aml_append(method, elsectx); |
| aml_append(dev, method); |
| |
| method = aml_method("_DSM", 4, AML_NOTSERIALIZED); |
| |
| /* PCI Firmware Specification 3.0 |
| * 4.6.1. _DSM for PCI Express Slot Information |
| * The UUID in _DSM in this context is |
| * {E5C937D0-3553-4D7A-9117-EA4D19C3434D} |
| */ |
| UUID = aml_touuid("E5C937D0-3553-4D7A-9117-EA4D19C3434D"); |
| ifctx = aml_if(aml_equal(aml_arg(0), UUID)); |
| ifctx1 = aml_if(aml_equal(aml_arg(2), aml_int(0))); |
| uint8_t byte_list[1] = {1}; |
| buf = aml_buffer(1, byte_list); |
| aml_append(ifctx1, aml_return(buf)); |
| aml_append(ifctx, ifctx1); |
| aml_append(method, ifctx); |
| |
| byte_list[0] = 0; |
| buf = aml_buffer(1, byte_list); |
| aml_append(method, aml_return(buf)); |
| aml_append(dev, method); |
| } |
| |
| void acpi_dsdt_add_gpex(Aml *scope, struct GPEXConfig *cfg) |
| { |
| int nr_pcie_buses = cfg->ecam.size / PCIE_MMCFG_SIZE_MIN; |
| Aml *method, *crs, *dev, *rbuf; |
| PCIBus *bus = cfg->bus; |
| CrsRangeSet crs_range_set; |
| CrsRangeEntry *entry; |
| int i; |
| |
| /* start to construct the tables for pxb */ |
| crs_range_set_init(&crs_range_set); |
| if (bus) { |
| QLIST_FOREACH(bus, &bus->child, sibling) { |
| uint8_t bus_num = pci_bus_num(bus); |
| uint8_t numa_node = pci_bus_numa_node(bus); |
| bool is_cxl = pci_bus_is_cxl(bus); |
| |
| if (!pci_bus_is_root(bus)) { |
| continue; |
| } |
| |
| /* |
| * 0 - (nr_pcie_buses - 1) is the bus range for the main |
| * host-bridge and it equals the MIN of the |
| * busNr defined for pxb-pcie. |
| */ |
| if (bus_num < nr_pcie_buses) { |
| nr_pcie_buses = bus_num; |
| } |
| |
| dev = aml_device("PC%.02X", bus_num); |
| if (is_cxl) { |
| struct Aml *pkg = aml_package(2); |
| aml_append(dev, aml_name_decl("_HID", aml_string("ACPI0016"))); |
| aml_append(pkg, aml_eisaid("PNP0A08")); |
| aml_append(pkg, aml_eisaid("PNP0A03")); |
| aml_append(dev, aml_name_decl("_CID", pkg)); |
| } else { |
| aml_append(dev, aml_name_decl("_HID", aml_string("PNP0A08"))); |
| aml_append(dev, aml_name_decl("_CID", aml_string("PNP0A03"))); |
| } |
| aml_append(dev, aml_name_decl("_BBN", aml_int(bus_num))); |
| aml_append(dev, aml_name_decl("_UID", aml_int(bus_num))); |
| aml_append(dev, aml_name_decl("_STR", aml_unicode("pxb Device"))); |
| aml_append(dev, aml_name_decl("_CCA", aml_int(1))); |
| if (numa_node != NUMA_NODE_UNASSIGNED) { |
| aml_append(dev, aml_name_decl("_PXM", aml_int(numa_node))); |
| } |
| |
| acpi_dsdt_add_pci_route_table(dev, cfg->irq); |
| |
| /* |
| * Resources defined for PXBs are composed of the following parts: |
| * 1. The resources the pci-brige/pcie-root-port need. |
| * 2. The resources the devices behind pxb need. |
| */ |
| crs = build_crs(PCI_HOST_BRIDGE(BUS(bus)->parent), &crs_range_set, |
| cfg->pio.base, 0, 0, 0); |
| aml_append(dev, aml_name_decl("_CRS", crs)); |
| |
| if (is_cxl) { |
| build_cxl_osc_method(dev); |
| } else { |
| acpi_dsdt_add_pci_osc(dev); |
| } |
| |
| aml_append(scope, dev); |
| } |
| } |
| |
| /* tables for the main */ |
| dev = aml_device("%s", "PCI0"); |
| aml_append(dev, aml_name_decl("_HID", aml_string("PNP0A08"))); |
| aml_append(dev, aml_name_decl("_CID", aml_string("PNP0A03"))); |
| aml_append(dev, aml_name_decl("_SEG", aml_int(0))); |
| aml_append(dev, aml_name_decl("_BBN", aml_int(0))); |
| aml_append(dev, aml_name_decl("_UID", aml_int(0))); |
| aml_append(dev, aml_name_decl("_STR", aml_unicode("PCIe 0 Device"))); |
| aml_append(dev, aml_name_decl("_CCA", aml_int(1))); |
| |
| acpi_dsdt_add_pci_route_table(dev, cfg->irq); |
| |
| method = aml_method("_CBA", 0, AML_NOTSERIALIZED); |
| aml_append(method, aml_return(aml_int(cfg->ecam.base))); |
| aml_append(dev, method); |
| |
| /* |
| * At this point crs_range_set has all the ranges used by pci |
| * busses *other* than PCI0. These ranges will be excluded from |
| * the PCI0._CRS. |
| */ |
| rbuf = aml_resource_template(); |
| aml_append(rbuf, |
| aml_word_bus_number(AML_MIN_FIXED, AML_MAX_FIXED, AML_POS_DECODE, |
| 0x0000, 0x0000, nr_pcie_buses - 1, 0x0000, |
| nr_pcie_buses)); |
| if (cfg->mmio32.size) { |
| crs_replace_with_free_ranges(crs_range_set.mem_ranges, |
| cfg->mmio32.base, |
| cfg->mmio32.base + cfg->mmio32.size - 1); |
| for (i = 0; i < crs_range_set.mem_ranges->len; i++) { |
| entry = g_ptr_array_index(crs_range_set.mem_ranges, i); |
| aml_append(rbuf, |
| aml_dword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED, |
| AML_NON_CACHEABLE, AML_READ_WRITE, 0x0000, |
| entry->base, entry->limit, |
| 0x0000, entry->limit - entry->base + 1)); |
| } |
| } |
| if (cfg->pio.size) { |
| crs_replace_with_free_ranges(crs_range_set.io_ranges, |
| 0x0000, |
| cfg->pio.size - 1); |
| for (i = 0; i < crs_range_set.io_ranges->len; i++) { |
| entry = g_ptr_array_index(crs_range_set.io_ranges, i); |
| aml_append(rbuf, |
| aml_dword_io(AML_MIN_FIXED, AML_MAX_FIXED, AML_POS_DECODE, |
| AML_ENTIRE_RANGE, 0x0000, entry->base, |
| entry->limit, cfg->pio.base, |
| entry->limit - entry->base + 1)); |
| } |
| } |
| if (cfg->mmio64.size) { |
| crs_replace_with_free_ranges(crs_range_set.mem_64bit_ranges, |
| cfg->mmio64.base, |
| cfg->mmio64.base + cfg->mmio64.size - 1); |
| for (i = 0; i < crs_range_set.mem_64bit_ranges->len; i++) { |
| entry = g_ptr_array_index(crs_range_set.mem_64bit_ranges, i); |
| aml_append(rbuf, |
| aml_qword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED, |
| AML_NON_CACHEABLE, AML_READ_WRITE, 0x0000, |
| entry->base, |
| entry->limit, 0x0000, |
| entry->limit - entry->base + 1)); |
| } |
| } |
| aml_append(dev, aml_name_decl("_CRS", rbuf)); |
| |
| acpi_dsdt_add_pci_osc(dev); |
| |
| Aml *dev_res0 = aml_device("%s", "RES0"); |
| aml_append(dev_res0, aml_name_decl("_HID", aml_string("PNP0C02"))); |
| crs = aml_resource_template(); |
| aml_append(crs, |
| aml_qword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED, |
| AML_NON_CACHEABLE, AML_READ_WRITE, 0x0000, |
| cfg->ecam.base, |
| cfg->ecam.base + cfg->ecam.size - 1, |
| 0x0000, |
| cfg->ecam.size)); |
| aml_append(dev_res0, aml_name_decl("_CRS", crs)); |
| aml_append(dev, dev_res0); |
| aml_append(scope, dev); |
| |
| crs_range_set_free(&crs_range_set); |
| } |
