mirror of
https://github.com/0Nera/BMOSP.git
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142 lines
5.1 KiB
C
142 lines
5.1 KiB
C
#include <system.h>
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typedef struct {
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char *name;
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uint16_t id;
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} vendor_t;
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static vendor_t **vendor_list;
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static uint64_t num_vendors;
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static char *find_vendor(uint16_t id) {
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for (uint64_t i = 0; i < num_vendors; i++) {
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if (vendor_list[i]->id == id) { return vendor_list[i]->name; }
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}
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return "Нет в базе";
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}
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static inline uint16_t pci_read_word(uint16_t bus, uint16_t slot, uint16_t func, uint16_t offset) {
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uint64_t address;
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uint64_t lbus = (uint64_t)bus;
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uint64_t lslot = (uint64_t)slot;
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uint64_t lfunc = (uint64_t)func;
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uint16_t tmp = 0;
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address = (uint64_t)((lbus << 16) | (lslot << 11) | (lfunc << 8) | (offset & 0xFC) | ((uint32_t)0x80000000));
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outl(0xCF8, address);
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tmp = (uint16_t)((inl(0xCFC) >> ((offset & 2) * 8)) & 0xFFFF);
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return (tmp);
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}
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static inline uint16_t get_vendor_id(uint16_t bus, uint16_t slot, uint16_t function) {
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uint32_t r0 = pci_read_word(bus, slot, function, 0);
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return r0;
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}
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static inline uint16_t get_device_id(uint16_t bus, uint16_t slot, uint16_t function) {
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uint32_t r0 = pci_read_word(bus, slot, function, 2);
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return r0;
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}
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static inline uint16_t get_class_id(uint16_t bus, uint16_t slot, uint16_t function) {
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uint32_t r0 = pci_read_word(bus, slot, function, 0xA);
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return (r0 & ~0x00FF) >> 8;
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}
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static inline uint16_t get_sub_class_id(uint16_t bus, uint16_t slot, uint16_t function) {
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uint32_t r0 = pci_read_word(bus, slot, function, 0xA);
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return (r0 & ~0xFF00);
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}
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static char *get_class_name(uint16_t number) {
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switch (number) {
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case 0x0: return "Неклассифицирован";
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case 0x1: return "Контроллер устройства хранения";
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case 0x2: return "Контроллер сети";
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case 0x3: return "Контроллер дисплея";
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case 0x4: return "Мультимедийный контроллер";
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case 0x5: return "Контроллер памяти";
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case 0x6: return "Мост";
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case 0x7: return "Простой коммуникационный контроллер";
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case 0x8: return "Периферийное устройство базовой системы";
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case 0x9: return "Устройство ввода";
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case 0xA: return "Док-станция";
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case 0xB: return "Процессор";
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case 0xC: return "Контроллер последовательной шины";
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case 0xD: return "Беспроводной контроллер";
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case 0xE: return "Интеллектуальный контроллер ввода/вывода";
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case 0xF: return "Контроллер спутниковой связи";
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case 0x10: return "Контроллер шифрования/дешифрования";
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case 0x11: return "Контроллер сбора данных и обработки сигналов";
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default: return "Неизвестный";
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}
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}
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static inline void scan( ) {
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uint64_t devices = 0;
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for (uint32_t bus = 0; bus < 256; bus++) {
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for (uint32_t slot = 0; slot < 32; slot++) {
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for (uint32_t function = 0; function < 8; function++) {
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uint16_t vendor = get_vendor_id(bus, slot, function);
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if (vendor == 0xFFFF) { continue; }
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uint16_t device_id = get_device_id(bus, slot, function);
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uint16_t class_id = get_class_id(bus, slot, function);
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uint16_t status = pci_read_word(bus, slot, function, 0x6);
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/*
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uint32_t mem_addr_0 = pci_read_word(bus, slot, function, 0x1C);
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uint32_t mem_addr_1 = pci_read_word(bus, slot, function, 0x24);
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uint32_t mem_lim_0 = pci_read_word(bus, slot, function, 0x20);
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uint32_t mem_lim_1 = pci_read_word(bus, slot, function, 0x28);
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uint32_t io_addr_0 = pci_read_word(bus, slot, function, 0x2C);
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uint32_t io_addr_1 = pci_read_word(bus, slot, function, 0x34);
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uint32_t io_lim_0 = pci_read_word(bus, slot, function, 0x30);
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uint32_t io_lim_1 = pci_read_word(bus, slot, function, 0x38);
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*/
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char *name = find_vendor(vendor);
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fb_printf("[%4u] %4x [%s], устройство: %x, %u.%u.%u | ", devices, vendor, name, device_id, bus, slot,
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function);
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fb_printf("%s", get_class_name(class_id));
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/*
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fb_printf(" | %8x : %8x", mem_addr_0, mem_lim_0);
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fb_printf(" | %8x : %8x", mem_addr_1, mem_lim_1);
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fb_printf(" | %8x : %8x", io_addr_0, io_lim_0);
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fb_printf(" | %8x : %8x", io_addr_1, io_lim_1);
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*/
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fb_printf(" | %4x\n", status);
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devices++;
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}
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}
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}
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}
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module_info_t __attribute__((section(".minit"))) init(env_t *env) {
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init_env(env);
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module_info_t *pci_data = get_module("[PCI][ADAPTER]");
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num_vendors = pci_data->data_size - 1;
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if (pci_data == NULL) {
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fb_printf("Адаптер PCI данных не найден!\n");
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num_vendors = 0;
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} else {
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fb_printf("Записей в базе PCI: %u\n", pci_data->data_size);
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vendor_list = (vendor_t **)pci_data->data;
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}
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scan( );
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return (module_info_t){ .name = (char *)"[PCI]",
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.message = (char *)"PCI драйвер",
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.type = 0,
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.data_size = 0,
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.data = (void *)0,
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.err_code = 0,
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.module_id = 0,
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.irq = 0,
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.irq_handler = 0,
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.get_func = 0 };
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} |