mirror of https://github.com/ipxe/ipxe.git
131 lines
3.1 KiB
C
131 lines
3.1 KiB
C
#ifndef _IPXE_LINUX_PCI_H
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#define _IPXE_LINUX_PCI_H
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/** @file
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*
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* iPXE PCI API for Linux
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*
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*/
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FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
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#ifdef PCIAPI_LINUX
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#define PCIAPI_PREFIX_linux
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#else
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#define PCIAPI_PREFIX_linux __linux_
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#endif
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struct pci_device;
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extern int linux_pci_read ( struct pci_device *pci, unsigned long where,
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unsigned long *value, size_t len );
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extern int linux_pci_write ( struct pci_device *pci, unsigned long where,
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unsigned long value, size_t len );
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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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static inline __always_inline int
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PCIAPI_INLINE ( linux, pci_read_config_byte ) ( struct pci_device *pci,
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unsigned int where,
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uint8_t *value ) {
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int rc;
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unsigned long tmp;
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rc = linux_pci_read ( pci, where, &tmp, sizeof ( *value ) );
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*value = tmp;
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return rc;
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}
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/**
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* Read 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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static inline __always_inline int
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PCIAPI_INLINE ( linux, pci_read_config_word ) ( struct pci_device *pci,
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unsigned int where,
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uint16_t *value ) {
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int rc;
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unsigned long tmp;
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rc = linux_pci_read ( pci, where, &tmp, sizeof ( *value ) );
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*value = tmp;
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return rc;
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}
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/**
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* Read 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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static inline __always_inline int
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PCIAPI_INLINE ( linux, pci_read_config_dword ) ( struct pci_device *pci,
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unsigned int where,
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uint32_t *value ) {
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int rc;
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unsigned long tmp;
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rc = linux_pci_read ( pci, where, &tmp, sizeof ( *value ) );
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*value = tmp;
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return rc;
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}
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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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static inline __always_inline int
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PCIAPI_INLINE ( linux, pci_write_config_byte ) ( struct pci_device *pci,
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unsigned int where,
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uint8_t value ) {
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return linux_pci_write ( pci, where, value, sizeof ( value ) );
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}
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/**
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* Write 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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static inline __always_inline int
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PCIAPI_INLINE ( linux, pci_write_config_word ) ( struct pci_device *pci,
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unsigned int where,
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uint16_t value ) {
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return linux_pci_write ( pci, where, value, sizeof ( value ) );
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}
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/**
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* Write 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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static inline __always_inline int
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PCIAPI_INLINE ( linux, pci_write_config_dword ) ( struct pci_device *pci,
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unsigned int where,
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uint32_t value ) {
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return linux_pci_write ( pci, where, value, sizeof ( value ) );
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}
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#endif /* _IPXE_LINUX_PCI_H */
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