/* SPDX-License-Identifier: GPL-2.0-only */ #include <device/device.h> #include <device/pci.h> #include <device/pci_ops.h> typedef struct { const unsigned char subclass_id; const char *subclass_name; } PCI_SUBCLASS; typedef struct { const unsigned char class_id; const PCI_SUBCLASS *subclass_list; const unsigned int subclass_entries; const char *class_name; } PCI_CLASS; static const PCI_SUBCLASS unclassified[] = { { 0x00, "Non-VGA device" }, { 0x01, "VGA compatible device" } }; static const PCI_SUBCLASS mass_storage[] = { { 0x00, "SCSI storage controller" }, { 0x01, "IDE interface" }, { 0x02, "Floppy disk controller" }, { 0x03, "IPI bus controller" }, { 0x04, "RAID bus controller" }, { 0x05, "ATA controller" }, { 0x06, "SATA controller" }, { 0x07, "Serial Attached SCSI controller" }, { 0x08, "Non-Volatile memory controller" }, { 0x09, "Universal Flash Storage controller" }, { 0x80, "Mass storage controller" } }; static const PCI_SUBCLASS network[] = { { 0x00, "Ethernet controller" }, { 0x01, "Token ring network controller" }, { 0x02, "FDDI network controller" }, { 0x03, "ATM network controller" }, { 0x04, "ISDN controller" }, { 0x05, "WorldFip controller" }, { 0x06, "PICMG controller" }, { 0x07, "InfiniBand Controller" }, { 0x08, "Host fabric controller" }, { 0x80, "Network controller" } }; static const PCI_SUBCLASS display[] = { { 0x00, "VGA compatible controller" }, { 0x01, "XGA compatible controller" }, { 0x02, "3D controller" }, { 0x80, "Display controller" } }; static const PCI_SUBCLASS multimedia[] = { { 0x00, "Multimedia video controller" }, { 0x01, "Multimedia audio controller" }, { 0x02, "Computer telephony device" }, { 0x03, "Audio device" }, { 0x80, "Multimedia controller" } }; static const PCI_SUBCLASS memory[] = { { 0x00, "RAM memory" }, { 0x01, "FLASH memory" }, { 0x80, "Memory controller" } }; static const PCI_SUBCLASS bridge[] = { { 0x00, "Host bridge" }, { 0x01, "ISA bridge" }, { 0x02, "EISA bridge" }, { 0x03, "MicroChannel bridge" }, { 0x04, "PCI bridge" }, { 0x05, "PCMCIA bridge" }, { 0x06, "NuBus bridge" }, { 0x07, "CardBus bridge" }, { 0x08, "RACEway bridge" }, { 0x09, "Semi-transparent PCI-to-PCI bridge" }, { 0x0a, "InfiniBand to PCI host bridge" }, { 0x0b, "Advanced Switching to PCI host bridge" }, { 0x80, "Bridge" } }; static const PCI_SUBCLASS communication[] = { { 0x00, "Serial controller" }, { 0x01, "Parallel controller" }, { 0x02, "Multiport serial controller" }, { 0x03, "Modem" }, { 0x04, "GPIB controller" }, { 0x05, "Smard Card controller" }, { 0x80, "Communication controller" } }; static const PCI_SUBCLASS generic[] = { { 0x00, "PIC" }, { 0x01, "DMA controller" }, { 0x02, "Timer" }, { 0x03, "RTC" }, { 0x04, "PCI Hot-plug controller" }, { 0x05, "SD Host controller" }, { 0x06, "IOMMU" }, { 0x07, "Root Complex Event Collector" }, { 0x80, "System peripheral" } }; static const PCI_SUBCLASS input_device[] = { { 0x00, "Keyboard controller" }, { 0x01, "Digitizer Pen" }, { 0x02, "Mouse controller" }, { 0x03, "Scanner controller" }, { 0x04, "Gameport controller" }, { 0x80, "Input device controller" } }; static const PCI_SUBCLASS docking_station[] = { { 0x00, "Generic Docking Station" }, { 0x80, "Docking Station" } }; static const PCI_SUBCLASS processor[] = { { 0x00, "386" }, { 0x01, "486" }, { 0x02, "Pentium" }, { 0x10, "Alpha" }, { 0x20, "Power PC" }, { 0x30, "MIPS" }, { 0x40, "Co-processor" }, { 0x80, "Processor" } }; static const PCI_SUBCLASS serial_bus[] = { { 0x00, "FireWire (IEEE 1394)" }, { 0x01, "ACCESS Bus" }, { 0x02, "SSA" }, { 0x03, "USB controller" }, { 0x04, "Fibre Channel" }, { 0x05, "SMBus" }, { 0x06, "InfiniBand" }, { 0x07, "IPMI SMIC interface" }, { 0x08, "SERCOS interface" }, { 0x09, "CANBUS" }, { 0x0a, "MIPI I3C SM Host Controller Interface" }, { 0x80, "Serial Bus Controller" } }; static const PCI_SUBCLASS wireless[] = { { 0x00, "IRDA controller" }, { 0x01, "Consumer IR controller" }, { 0x10, "RF controller" }, { 0x11, "Bluetooth" }, { 0x12, "Broadband" }, { 0x20, "802.1a controller" }, { 0x21, "802.1b controller" }, { 0x40, "Cellular controller/modem" }, { 0x41, "Cellular controller/modem plus Ethernet (802.11)" }, { 0x80, "Wireless controller" } }; static const PCI_SUBCLASS intellegient_controller[] = { { 0x00, "I2O" } }; static const PCI_SUBCLASS satellite_controller[] = { { 0x01, "Satellite TV controller" }, { 0x02, "Satellite audio communication controller" }, { 0x03, "Satellite voice communication controller" }, { 0x04, "Satellite data communication controller" } }; static const PCI_SUBCLASS encryption[] = { { 0x00, "Network and computing encryption device" }, { 0x10, "Entertainment encryption device" }, { 0x80, "Encryption controller" } }; static const PCI_SUBCLASS signal_processing[] = { { 0x00, "DPIO module" }, { 0x01, "Performance counters" }, { 0x10, "Communication synchronizer" }, { 0x20, "Signal processing management" }, { 0x80, "Signal processing controller" } }; static const PCI_CLASS class_list[] = { { 0x00, &unclassified[0], ARRAY_SIZE(unclassified), "Unclassified device" }, { 0x01, &mass_storage[0], ARRAY_SIZE(mass_storage), "Mass storage" }, { 0x02, &network[0], ARRAY_SIZE(network), "Network" }, { 0x03, &display[0], ARRAY_SIZE(display), "Display" }, { 0x04, &multimedia[0], ARRAY_SIZE(multimedia), "Multimedia" }, { 0x05, &memory[0], ARRAY_SIZE(memory), "Memory" }, { 0x06, &bridge[0], ARRAY_SIZE(bridge), "Bridge" }, { 0x07, &communication[0], ARRAY_SIZE(communication), "Communication" }, { 0x08, &generic[0], ARRAY_SIZE(generic), "Generic system peripheral" }, { 0x09, &input_device[0], ARRAY_SIZE(input_device), "Input device" }, { 0x0a, &docking_station[0], ARRAY_SIZE(docking_station), "Docking station" }, { 0x0b, &processor[0], ARRAY_SIZE(processor), "Processor" }, { 0x0c, &serial_bus[0], ARRAY_SIZE(serial_bus), "Serial bus" }, { 0x0d, &wireless[0], ARRAY_SIZE(wireless), "Wireless" }, { 0x0e, &intellegient_controller[0], ARRAY_SIZE(intellegient_controller), "Intelligent controller" }, { 0x0f, &satellite_controller[0], ARRAY_SIZE(satellite_controller), "Satellite communications" }, { 0x10, &encryption[0], ARRAY_SIZE(encryption), "Encryption" }, { 0x11, &signal_processing[0], ARRAY_SIZE(signal_processing), "Signal processing" }, { 0xff, NULL, 0, "Unassigned class" } }; static const unsigned int class_entries = ARRAY_SIZE(class_list); static const PCI_CLASS *get_pci_class_entry(struct device *dev) { unsigned char class; const PCI_CLASS *class_entry; const PCI_CLASS *class_list_end; /* Get the PCI device class */ class = pci_read_config8(dev, PCI_CLASS_DEVICE+1); /* Locate the class entry */ class_entry = &class_list[0]; class_list_end = &class_entry[class_entries]; while (class_list_end > class_entry) { if (class_entry->class_id == class) return class_entry; class_entry += 1; } return NULL; } const char *get_pci_class_name(struct device *dev) { const PCI_CLASS *class_entry; class_entry = get_pci_class_entry(dev); return class_entry ? class_entry->class_name : "???"; } const char *get_pci_subclass_name(struct device *dev) { const PCI_CLASS *class_entry; unsigned char subclass; const PCI_SUBCLASS *subclass_entry; const PCI_SUBCLASS *subclass_list_end; const char *subclass_name; /* Get the PCI device subclass */ subclass = pci_read_config8(dev, PCI_CLASS_DEVICE); /* Locate the subclass name */ subclass_name = "???"; class_entry = get_pci_class_entry(dev); subclass_entry = class_entry ? class_entry->subclass_list : NULL; if (subclass_entry != NULL) { subclass_list_end = &subclass_entry[class_entry->subclass_entries]; while (subclass_list_end > subclass_entry) { if (subclass_entry->subclass_id == subclass) { subclass_name = subclass_entry->subclass_name; break; } subclass_entry += 1; } } return subclass_name; }