PCI

include/drivers/pci.h

struct pci_device

Member Type	Member Name
uint8_t	bus
uint8_t	device
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

struct pci_driver

Member Type	Member Name
char	*name
uint8_t	class_code
uint8_t	subclass
uint8_t	prog_if
uint16_t	vendor_id
void	(*initialize)(uint8_t, uint8_t, uint8_t, struct pci_device *)

struct pci_msix_table_entry

Member Type	Member Name
uint32_t	msg_addr_low
uint32_t	msg_addr_high
uint32_t	msg_data
uint32_t	vector_ctrl

struct pci_msix_cap

Member Type	Member Name
uint8_t	cap_id
uint8_t	next_ptr
uint16_t	msg_ctl
uint32_t	table_offset_bir
uint32_t	pba_offset_bir

• static inline uint16_t pci_read_config16(uint8_t bus,uint8_t device,uint8_t function,uint8_t offset)
• static inline uint8_t pci_read_config8(uint8_t bus,uint8_t device,uint8_t function,uint8_t offset)
• static inline void pci_write_config16(uint8_t bus,uint8_t device,uint8_t function,uint8_t offset,uint16_t value)
• static inline uint32_t pci_config_address(uint8_t bus,uint8_t slot,uint8_t func,uint8_t offset)
• static inline uint32_t pci_read(uint8_t bus,uint8_t slot,uint8_t func,uint8_t offset)
• static inline uint16_t pci_read_word(uint8_t bus,uint8_t slot,uint8_t func,uint8_t offset)
• static inline uint8_t pci_read_byte(uint8_t bus,uint8_t slot,uint8_t func,uint8_t offset)
• static inline void pci_write(uint8_t bus,uint8_t slot,uint8_t func,uint8_t offset,uint32_t value)
• static inline void pci_write_word(uint8_t bus,uint8_t slot,uint8_t func,uint8_t offset,uint16_t value)
• static inline void pci_write_byte(uint8_t bus,uint8_t slot,uint8_t func,uint8_t offset,uint8_t value)
• const char * pci_class_name(uint8_t class_code,uint8_t subclass)
• void pci_scan_devices(struct pci_device **devices_out,uint64_t *count_out)
• uint32_t pci_read_bar(uint8_t bus,uint8_t device,uint8_t function,uint8_t bar_index)
• void pci_enable_msix(uint8_t bus,uint8_t slot,uint8_t func)
• void pci_enable_msix_on_core(uint8_t bus,uint8_t slot,uint8_t func,uint8_t vector,uint8_t core)
• void pci_init_devices(struct pci_device *devices,uint64_t count)
• uint8_t pci_find_capability(uint8_t bus,uint8_t slot,uint8_t func,uint8_t cap_id)
• 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)

Defines

• PCI_CLASS_MASS_STORAGE: 0x01
• PCI_SUBCLASS_NVM: 0x08
• PCI_PROGIF_NVME: 0x02
• PCI_BAR0: 0x10
• PCI_BAR1: 0x14
• PCI_BAR2: 0x18
• PCI_BAR3: 0x1C
• PCI_BAR4: 0x20
• PCI_BAR5: 0x24
• PCI_CAP_PTR: 0x34
• PCI_CAP_ID_MSIX: 0x11
• PCI_CONFIG_ADDRESS: 0xCF8
• PCI_CONFIG_DATA: 0xCFC
• PCI_INTERRUPT_LINE: 0x3C
• PCI_PROG_IF: 0x09

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