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#ifndef _IPXE_PCI_IO_H
#define _IPXE_PCI_IO_H
/** @file
*
* PCI I/O API
*
*/
FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
#include <stdint.h>
#include <ipxe/api.h>
#include <ipxe/iomap.h>
#include <config/ioapi.h>
/**
* Calculate static inline PCI I/O API function name
*
* @v _prefix Subsystem prefix
* @v _api_func API function
* @ret _subsys_func Subsystem API function
*/
#define PCIAPI_INLINE( _subsys, _api_func ) \
SINGLE_API_INLINE ( PCIAPI_PREFIX_ ## _subsys, _api_func )
/**
* Provide a PCI I/O API implementation
*
* @v _prefix Subsystem prefix
* @v _api_func API function
* @v _func Implementing function
*/
#define PROVIDE_PCIAPI( _subsys, _api_func, _func ) \
PROVIDE_SINGLE_API ( PCIAPI_PREFIX_ ## _subsys, _api_func, _func )
/**
* Provide a static inline PCI I/O API implementation
*
* @v _prefix Subsystem prefix
* @v _api_func API function
*/
#define PROVIDE_PCIAPI_INLINE( _subsys, _api_func ) \
PROVIDE_SINGLE_API_INLINE ( PCIAPI_PREFIX_ ## _subsys, _api_func )
/* Include all architecture-independent I/O API headers */
#include <ipxe/efi/efi_pci_api.h>
#include <ipxe/linux/linux_pci.h>
/* Include all architecture-dependent I/O API headers */
#include <bits/pci_io.h>
/**
* Determine number of PCI buses within system
*
* @ret num_bus Number of buses
*/
int pci_num_bus ( void );
/**
* Read byte from PCI configuration space
*
* @v pci PCI device
* @v where Location within PCI configuration space
* @v value Value read
* @ret rc Return status code
*/
int pci_read_config_byte ( struct pci_device *pci, unsigned int where,
uint8_t *value );
/**
* Read 16-bit word from PCI configuration space
*
* @v pci PCI device
* @v where Location within PCI configuration space
* @v value Value read
* @ret rc Return status code
*/
int pci_read_config_word ( struct pci_device *pci, unsigned int where,
uint16_t *value );
/**
* Read 32-bit dword from PCI configuration space
*
* @v pci PCI device
* @v where Location within PCI configuration space
* @v value Value read
* @ret rc Return status code
*/
int pci_read_config_dword ( struct pci_device *pci, unsigned int where,
uint32_t *value );
/**
* Write byte to PCI configuration space
*
* @v pci PCI device
* @v where Location within PCI configuration space
* @v value Value to be written
* @ret rc Return status code
*/
int pci_write_config_byte ( struct pci_device *pci, unsigned int where,
uint8_t value );
/**
* Write 16-bit word to PCI configuration space
*
* @v pci PCI device
* @v where Location within PCI configuration space
* @v value Value to be written
* @ret rc Return status code
*/
int pci_write_config_word ( struct pci_device *pci, unsigned int where,
uint16_t value );
/**
* Write 32-bit dword to PCI configuration space
*
* @v pci PCI device
* @v where Location within PCI configuration space
* @v value Value to be written
* @ret rc Return status code
*/
int pci_write_config_dword ( struct pci_device *pci, unsigned int where,
uint32_t value );
/**
* Map PCI bus address as an I/O address
*
* @v bus_addr PCI bus address
* @v len Length of region
* @ret io_addr I/O address, or NULL on error
*/
void * pci_ioremap ( struct pci_device *pci, unsigned long bus_addr,
size_t len );
#endif /* _IPXE_PCI_IO_H */
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