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[pci] Formalise the PCI I/O API

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This commit is contained in:
Michael Brown
2008-10-12 12:50:44 +01:00
parent fd67452807
commit 8a4ccebec9
10 changed files with 220 additions and 81 deletions
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2
src/include/gpxe/pci.h
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@@ -19,7 +19,7 @@
#include <stdint.h>
#include <gpxe/device.h>
#include <gpxe/tables.h>
#include <pci_io.h>
#include <gpxe/pci_io.h>
#include "pci_ids.h"
/*

121
src/include/gpxe/pci_io.h Normal file
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@@ -0,0 +1,121 @@
#ifndef _GPXE_PCI_IO_H
#define _GPXE_PCI_IO_H
/** @file
*
* PCI I/O API
*
*/
#include <stdint.h>
#include <gpxe/api.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 all architecture-dependent I/O API headers */
#include <bits/pci_io.h>
/**
* Determine maximum PCI bus number within system
*
* @ret max_bus Maximum bus number
*/
int pci_max_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 );
#endif /* _GPXE_PCI_IO_H */