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1 | /* | |
2 | * The PCI Library -- Internal Stuff | |
3 | * | |
4 | * Copyright (c) 1997--2022 Martin Mares <mj@ucw.cz> | |
5 | * | |
6 | * Can be freely distributed and used under the terms of the GNU GPL v2+ | |
7 | * | |
8 | * SPDX-License-Identifier: GPL-2.0-or-later | |
9 | */ | |
10 | ||
11 | #ifndef _INTERNAL_H | |
12 | #define _INTERNAL_H | |
13 | ||
14 | #include "config.h" | |
15 | ||
16 | #ifdef PCI_SHARED_LIB | |
17 | #define PCI_ABI __attribute__((visibility("default"))) | |
18 | // Functions, which are bound to externally visible symbols by the versioning | |
19 | // mechanism, have to be declared as VERSIONED. Otherwise, GCC with global | |
20 | // optimizations is happy to optimize them away, leading to linker failures. | |
21 | #define VERSIONED_ABI __attribute__((used)) PCI_ABI | |
22 | #ifdef __APPLE__ | |
23 | #define STATIC_ALIAS(_decl, _for) VERSIONED_ABI _decl { return _for; } | |
24 | #define DEFINE_ALIAS(_decl, _for) | |
25 | #define SYMBOL_VERSION(_int, _ext) | |
26 | #else | |
27 | #define DEFINE_ALIAS(_decl, _for) extern _decl __attribute__((alias(#_for))) VERSIONED_ABI | |
28 | #ifdef _WIN32 | |
29 | #define STATIC_ALIAS(_decl, _for) VERSIONED_ABI _decl { return _for; } | |
30 | /* GCC does not support asm .symver directive for Windows targets, so define new external global function symbol as alias to internal symbol */ | |
31 | #define SYMBOL_VERSION(_int, _ext) asm(".globl\t" PCI_STRINGIFY(__MINGW_USYMBOL(_ext)) "\n\t" \ | |
32 | ".def\t" PCI_STRINGIFY(__MINGW_USYMBOL(_ext)) ";\t.scl\t2;\t.type\t32;\t.endef\n\t" \ | |
33 | ".set\t" PCI_STRINGIFY(__MINGW_USYMBOL(_ext)) "," PCI_STRINGIFY(__MINGW_USYMBOL(_int))) | |
34 | #else | |
35 | #define STATIC_ALIAS(_decl, _for) | |
36 | #define SYMBOL_VERSION(_int, _ext) asm(".symver " #_int "," #_ext) | |
37 | #endif | |
38 | #endif | |
39 | #else | |
40 | #define VERSIONED_ABI | |
41 | #define STATIC_ALIAS(_decl, _for) _decl { return _for; } | |
42 | #define DEFINE_ALIAS(_decl, _for) | |
43 | #define SYMBOL_VERSION(_int, _ext) | |
44 | #endif | |
45 | ||
46 | #include "pci.h" | |
47 | #include "sysdep.h" | |
48 | ||
49 | /* Old 32-bit-only versions of MinGW32 do not define __MINGW_USYMBOL macro */ | |
50 | #ifdef __MINGW32__ | |
51 | #ifndef __MINGW_USYMBOL | |
52 | #define __MINGW_USYMBOL(sym) _##sym | |
53 | #endif | |
54 | #endif | |
55 | ||
56 | #define _PCI_STRINGIFY(x) #x | |
57 | #define PCI_STRINGIFY(x) _PCI_STRINGIFY(x) | |
58 | ||
59 | struct pci_methods { | |
60 | char *name; | |
61 | char *help; | |
62 | void (*config)(struct pci_access *); | |
63 | int (*detect)(struct pci_access *); | |
64 | void (*init)(struct pci_access *); | |
65 | void (*cleanup)(struct pci_access *); | |
66 | void (*scan)(struct pci_access *); | |
67 | void (*fill_info)(struct pci_dev *, unsigned int flags); | |
68 | int (*read)(struct pci_dev *, int pos, byte *buf, int len); | |
69 | int (*write)(struct pci_dev *, int pos, byte *buf, int len); | |
70 | int (*read_vpd)(struct pci_dev *, int pos, byte *buf, int len); | |
71 | void (*init_dev)(struct pci_dev *); | |
72 | void (*cleanup_dev)(struct pci_dev *); | |
73 | }; | |
74 | ||
75 | /* generic.c */ | |
76 | void pci_generic_scan_bus(struct pci_access *, byte *busmap, int domain, int bus); | |
77 | void pci_generic_scan_domain(struct pci_access *, int domain); | |
78 | void pci_generic_scan(struct pci_access *); | |
79 | void pci_generic_fill_info(struct pci_dev *, unsigned int flags); | |
80 | int pci_generic_block_read(struct pci_dev *, int pos, byte *buf, int len); | |
81 | int pci_generic_block_write(struct pci_dev *, int pos, byte *buf, int len); | |
82 | ||
83 | /* emulated.c */ | |
84 | int pci_emulated_read(struct pci_dev *d, int pos, byte *buf, int len); | |
85 | ||
86 | /* init.c */ | |
87 | void *pci_malloc(struct pci_access *, int); | |
88 | void pci_mfree(void *); | |
89 | char *pci_strdup(struct pci_access *a, const char *s); | |
90 | struct pci_access *pci_clone_access(struct pci_access *a); | |
91 | int pci_init_internal(struct pci_access *a, int skip_method); | |
92 | ||
93 | void pci_init_v30(struct pci_access *a) VERSIONED_ABI; | |
94 | void pci_init_v35(struct pci_access *a) VERSIONED_ABI; | |
95 | ||
96 | /* access.c */ | |
97 | struct pci_dev *pci_alloc_dev(struct pci_access *); | |
98 | int pci_link_dev(struct pci_access *, struct pci_dev *); | |
99 | ||
100 | int pci_fill_info_v30(struct pci_dev *, int flags) VERSIONED_ABI; | |
101 | int pci_fill_info_v31(struct pci_dev *, int flags) VERSIONED_ABI; | |
102 | int pci_fill_info_v32(struct pci_dev *, int flags) VERSIONED_ABI; | |
103 | int pci_fill_info_v33(struct pci_dev *, int flags) VERSIONED_ABI; | |
104 | int pci_fill_info_v34(struct pci_dev *, int flags) VERSIONED_ABI; | |
105 | int pci_fill_info_v35(struct pci_dev *, int flags) VERSIONED_ABI; | |
106 | int pci_fill_info_v38(struct pci_dev *, int flags) VERSIONED_ABI; | |
107 | int pci_fill_info_v313(struct pci_dev *, int flags) VERSIONED_ABI; | |
108 | ||
109 | static inline int want_fill(struct pci_dev *d, unsigned want_fields, unsigned int try_fields) | |
110 | { | |
111 | want_fields &= try_fields; | |
112 | if ((d->known_fields & want_fields) == want_fields) | |
113 | return 0; | |
114 | else | |
115 | { | |
116 | d->known_fields |= try_fields; | |
117 | return 1; | |
118 | } | |
119 | } | |
120 | ||
121 | static inline void clear_fill(struct pci_dev *d, unsigned clear_fields) | |
122 | { | |
123 | d->known_fields &= ~clear_fields; | |
124 | } | |
125 | ||
126 | struct pci_property { | |
127 | struct pci_property *next; | |
128 | u32 key; | |
129 | char value[1]; | |
130 | }; | |
131 | ||
132 | char *pci_set_property(struct pci_dev *d, u32 key, char *value); | |
133 | ||
134 | /* params.c */ | |
135 | struct pci_param *pci_define_param(struct pci_access *acc, char *param, char *val, char *help); | |
136 | int pci_set_param_internal(struct pci_access *acc, char *param, char *val, int copy); | |
137 | void pci_free_params(struct pci_access *acc); | |
138 | ||
139 | /* caps.c */ | |
140 | void pci_scan_caps(struct pci_dev *, unsigned int want_fields); | |
141 | void pci_free_caps(struct pci_dev *); | |
142 | ||
143 | extern struct pci_methods pm_intel_conf1, pm_intel_conf2, pm_linux_proc, | |
144 | pm_fbsd_device, pm_aix_device, pm_nbsd_libpci, pm_obsd_device, | |
145 | pm_dump, pm_linux_sysfs, pm_darwin, pm_sylixos_device, pm_hurd, | |
146 | pm_mmio_conf1, pm_mmio_conf1_ext, pm_ecam, | |
147 | pm_win32_cfgmgr32, pm_win32_kldbg, pm_win32_sysdbg, pm_aos_expansion, | |
148 | pm_rt_thread_smart_dm; | |
149 | ||
150 | #endif |