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