iPXE
pcibios.h
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1 #ifndef _IPXE_PCIBIOS_H
2 #define _IPXE_PCIBIOS_H
3 
4 #include <stdint.h>
5 
6 /** @file
7  *
8  * PCI configuration space access via PCI BIOS
9  *
10  */
11 
12 FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
13 
14 #ifdef PCIAPI_PCBIOS
15 #define PCIAPI_PREFIX_pcbios
16 #else
17 #define PCIAPI_PREFIX_pcbios __pcbios_
18 #endif
19 
20 struct pci_device;
21 
22 #define PCIBIOS_INSTALLATION_CHECK 0xb1010000
23 #define PCIBIOS_READ_CONFIG_BYTE 0xb1080000
24 #define PCIBIOS_READ_CONFIG_WORD 0xb1090000
25 #define PCIBIOS_READ_CONFIG_DWORD 0xb10a0000
26 #define PCIBIOS_WRITE_CONFIG_BYTE 0xb10b0000
27 #define PCIBIOS_WRITE_CONFIG_WORD 0xb10c0000
28 #define PCIBIOS_WRITE_CONFIG_DWORD 0xb10d0000
29 
30 extern int pcibios_read ( struct pci_device *pci, uint32_t command,
31  uint32_t *value );
32 extern int pcibios_write ( struct pci_device *pci, uint32_t command,
33  uint32_t value );
34 
35 /**
36  * Read byte from PCI configuration space via PCI BIOS
37  *
38  * @v pci PCI device
39  * @v where Location within PCI configuration space
40  * @v value Value read
41  * @ret rc Return status code
42  */
43 static inline __always_inline int
44 PCIAPI_INLINE ( pcbios, pci_read_config_byte ) ( struct pci_device *pci,
45  unsigned int where,
47  uint32_t tmp;
48  int rc;
49 
51  *value = tmp;
52  return rc;
53 }
54 
55 /**
56  * Read word from PCI configuration space via PCI BIOS
57  *
58  * @v pci PCI device
59  * @v where Location within PCI configuration space
60  * @v value Value read
61  * @ret rc Return status code
62  */
63 static inline __always_inline int
64 PCIAPI_INLINE ( pcbios, pci_read_config_word ) ( struct pci_device *pci,
65  unsigned int where,
66  uint16_t *value ) {
67  uint32_t tmp;
68  int rc;
69 
71  *value = tmp;
72  return rc;
73 }
74 
75 /**
76  * Read dword from PCI configuration space via PCI BIOS
77  *
78  * @v pci PCI device
79  * @v where Location within PCI configuration space
80  * @v value Value read
81  * @ret rc Return status code
82  */
83 static inline __always_inline int
84 PCIAPI_INLINE ( pcbios, pci_read_config_dword ) ( struct pci_device *pci,
85  unsigned int where,
86  uint32_t *value ) {
88 }
89 
90 /**
91  * Write byte to PCI configuration space via PCI BIOS
92  *
93  * @v pci PCI device
94  * @v where Location within PCI configuration space
95  * @v value Value to be written
96  * @ret rc Return status code
97  */
98 static inline __always_inline int
99 PCIAPI_INLINE ( pcbios, pci_write_config_byte ) ( struct pci_device *pci,
100  unsigned int where,
101  uint8_t value ) {
103 }
104 
105 /**
106  * Write word to PCI configuration space via PCI BIOS
107  *
108  * @v pci PCI device
109  * @v where Location within PCI configuration space
110  * @v value Value to be written
111  * @ret rc Return status code
112  */
113 static inline __always_inline int
114 PCIAPI_INLINE ( pcbios, pci_write_config_word ) ( struct pci_device *pci,
115  unsigned int where,
116  uint16_t value ) {
118 }
119 
120 /**
121  * Write dword to PCI configuration space via PCI BIOS
122  *
123  * @v pci PCI device
124  * @v where Location within PCI configuration space
125  * @v value Value to be written
126  * @ret rc Return status code
127  */
128 static inline __always_inline int
129 PCIAPI_INLINE ( pcbios, pci_write_config_dword ) ( struct pci_device *pci,
130  unsigned int where,
131  uint32_t value ) {
133 }
134 
135 #endif /* _IPXE_PCIBIOS_H */
unsigned short uint16_t
Definition: stdint.h:11
A command-line command.
Definition: command.h:9
int pci_write_config_word(struct pci_device *pci, unsigned int where, uint16_t value)
Write 16-bit word to PCI configuration space.
int rc
Definition: pcibios.h:48
#define PCIBIOS_READ_CONFIG_DWORD
Definition: pcibios.h:25
int pci_read_config_word(struct pci_device *pci, unsigned int where, uint16_t *value)
Read 16-bit word from PCI configuration space.
static __always_inline int PCIAPI_INLINE(pcbios, pci_read_config_byte)(struct pci_device *pci
Read byte from PCI configuration space via PCI BIOS.
int pci_read_config_dword(struct pci_device *pci, unsigned int where, uint32_t *value)
Read 32-bit dword from PCI configuration space.
static __always_inline int unsigned int uint8_t * value
Definition: pcibios.h:46
int pcibios_write(struct pci_device *pci, uint32_t command, uint32_t value)
Write configuration space via PCI BIOS.
Definition: pcibios.c:99
int pci_write_config_byte(struct pci_device *pci, unsigned int where, uint8_t value)
Write byte to PCI configuration space.
A PCI device.
Definition: pci.h:187
FILE_LICENCE(GPL2_OR_LATER_OR_UBDL)
#define __always_inline
Declare a function to be always inline.
Definition: compiler.h:611
uint8_t * tmp
Definition: entropy.h:156
#define PCIBIOS_WRITE_CONFIG_BYTE
Definition: pcibios.h:26
#define PCIBIOS_WRITE_CONFIG_DWORD
Definition: pcibios.h:28
unsigned char uint8_t
Definition: stdint.h:10
#define PCIBIOS_READ_CONFIG_BYTE
Definition: pcibios.h:23
unsigned int uint32_t
Definition: stdint.h:12
int pcibios_read(struct pci_device *pci, uint32_t command, uint32_t *value)
Read configuration space via PCI BIOS.
Definition: pcibios.c:71
int pci_write_config_dword(struct pci_device *pci, unsigned int where, uint32_t value)
Write 32-bit dword to PCI configuration space.
#define PCIBIOS_WRITE_CONFIG_WORD
Definition: pcibios.h:27
#define PCIBIOS_READ_CONFIG_WORD
Definition: pcibios.h:24
static __always_inline int unsigned int where
Definition: pcibios.h:45
int pci_read_config_byte(struct pci_device *pci, unsigned int where, uint8_t *value)
Read byte from PCI configuration space.