PCI

include/drivers/pci.h View source View on GitHub

Structs

pci_device

struct pci_device {
    struct device  device;
    uint8_t        bus;
    uint8_t        dev;
    uint8_t        function;
    uint16_t       vendor_id;
    uint16_t       device_id;
    uint8_t        class_code;
    uint8_t        subclass;
    uint8_t        prog_if;
    uint8_t        revision;
};

pci_driver

struct pci_driver {
    struct device_driver  driver;
    uint8_t               class_code;
    uint8_t               subclass;
    uint8_t               prog_if;
    uint16_t              vendor_id;
};

pci_msix_table_entry

struct pci_msix_table_entry {
    uint32_t  msg_addr_low;
    uint32_t  msg_addr_high;
    uint32_t  msg_data;
    uint32_t  vector_ctrl;
};

pci_msix_cap

struct pci_msix_cap {
    uint8_t   cap_id;
    uint8_t   next_ptr;
    uint16_t  msg_ctl;
    uint32_t  table_offset_bir;
    uint32_t  pba_offset_bir;
};

Unions

pci_command_reg

union pci_command_reg {
    uint16_t  value;
    struct {
        uint16_t  io_space : 1;
        uint16_t  memory_space : 1;
        uint16_t  bus_master : 1;
        uint16_t  special_cycles : 1;
        uint16_t  mem_write_inv : 1;
        uint16_t  vga_snoop : 1;
        uint16_t  parity_error : 1;
        uint16_t  reserved0 : 1;
        uint16_t  serr_enable : 1;
        uint16_t  fast_back : 1;
        uint16_t  interrupt_disable : 1;
        uint16_t  reserved1 : 5;
    };
};

Functions

pci_read_config16

uint16_t pci_read_config16(uint8_t bus, uint8_t device, uint8_t function, uint8_t offset);

pci_read_config8

uint8_t pci_read_config8(uint8_t bus, uint8_t device, uint8_t function, uint8_t offset);

pci_write_config16

void pci_write_config16(uint8_t bus, uint8_t device, uint8_t function, uint8_t offset, uint16_t value);

pci_config_address

uint32_t pci_config_address(uint8_t bus, uint8_t slot, uint8_t func, uint8_t offset);

pci_read

uint32_t pci_read(uint8_t bus, uint8_t slot, uint8_t func, uint8_t offset);

pci_read_word

uint16_t pci_read_word(uint8_t bus, uint8_t slot, uint8_t func, uint8_t offset);

pci_read_byte

uint8_t pci_read_byte(uint8_t bus, uint8_t slot, uint8_t func, uint8_t offset);

pci_write

void pci_write(uint8_t bus, uint8_t slot, uint8_t func, uint8_t offset, uint32_t value);

pci_write_word

void pci_write_word(uint8_t bus, uint8_t slot, uint8_t func, uint8_t offset, uint16_t value);

pci_write_byte

void pci_write_byte(uint8_t bus, uint8_t slot, uint8_t func, uint8_t offset, uint8_t value);

pci_class_name

const char * pci_class_name(uint8_t class_code, uint8_t subclass);

pci_scan_devices

void pci_scan_devices(struct pci_device **devices_out, uint64_t *count_out);

pci_read_bar

uint32_t pci_read_bar(uint8_t bus, uint8_t device, uint8_t function, uint8_t bar_index);

pci_enable_msix

void pci_enable_msix(uint8_t bus, uint8_t slot, uint8_t func);

pci_enable_msix_on_core

void pci_enable_msix_on_core(uint8_t bus, uint8_t slot, uint8_t func, uint8_t vector, uint8_t core);

pci_init_devices

void pci_init_devices(struct pci_device *devices, uint64_t count);

pci_find_capability

uint8_t pci_find_capability(uint8_t bus, uint8_t slot, uint8_t func, uint8_t cap_id);

pci_program_msix_entry

void pci_program_msix_entry(uint8_t bus, uint8_t slot, uint8_t func, uint32_t table_index, uint8_t vector, uint8_t apic_id);

Macros

PCI_CLASS_MASS_STORAGE

#define PCI_CLASS_MASS_STORAGE 0x01

PCI_SUBCLASS_NVM

#define PCI_SUBCLASS_NVM 0x08

PCI_PROGIF_NVME

#define PCI_PROGIF_NVME 0x02

PCI_DEV_REGISTER

#define PCI_DEV_REGISTER(n, cc, sc, pi, vi, init) \
    LINKER_SECTION_OBJECT(struct pci_driver, pci_devices) \
    pci_device_##n = {.driver.name = #n, \
                      .class_code = cc, \
                      .subclass = sc, \
                      .prog_if = pi, \
                      .vendor_id = vi, \
                      .driver.probe = init};

PCI_BAR0

#define PCI_BAR0 0x10

PCI_BAR1

#define PCI_BAR1 0x14

PCI_BAR2

#define PCI_BAR2 0x18

PCI_BAR3

#define PCI_BAR3 0x1C

PCI_BAR4

#define PCI_BAR4 0x20

PCI_BAR5

#define PCI_BAR5 0x24

PCI_CAP_PTR

#define PCI_CAP_PTR 0x34

PCI_CAP_ID_MSIX

#define PCI_CAP_ID_MSIX 0x11

PCI_CONFIG_ADDRESS

#define PCI_CONFIG_ADDRESS 0xCF8

PCI_CONFIG_DATA

#define PCI_CONFIG_DATA 0xCFC

PCI_INTERRUPT_LINE

#define PCI_INTERRUPT_LINE 0x3C

PCI_PROG_IF

#define PCI_PROG_IF 0x09

pci_log

#define pci_log(log_level, fmt, ...) \
    log(LOG_SITE(pci), LOG_HANDLE(pci), log_level, fmt, ##__VA_ARGS__)

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