2 * The PCI Library -- Internal Stuff
4 * Copyright (c) 1997--2022 Martin Mares <mj@ucw.cz>
6 * Can be freely distributed and used under the terms of the GNU GPL v2+
8 * SPDX-License-Identifier: GPL-2.0-or-later
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
23 #define STATIC_ALIAS(_decl, _for) VERSIONED_ABI _decl { return _for; }
24 #define DEFINE_ALIAS(_decl, _for)
25 #define SYMBOL_VERSION(_int, _ext)
27 #define STATIC_ALIAS(_decl, _for)
28 #define DEFINE_ALIAS(_decl, _for) extern _decl __attribute__((alias(#_for))) VERSIONED_ABI
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)))
35 #define SYMBOL_VERSION(_int, _ext) asm(".symver " #_int "," #_ext)
40 #define STATIC_ALIAS(_decl, _for) _decl { return _for; }
41 #define DEFINE_ALIAS(_decl, _for)
42 #define SYMBOL_VERSION(_int, _ext)
48 /* Old 32-bit-only versions of MinGW32 do not define __MINGW_USYMBOL macro */
50 #ifndef __MINGW_USYMBOL
51 #define __MINGW_USYMBOL(sym) _##sym
55 #define _PCI_STRINGIFY(x) #x
56 #define PCI_STRINGIFY(x) _PCI_STRINGIFY(x)
61 void (*config)(struct pci_access *);
62 int (*detect)(struct pci_access *);
63 void (*init)(struct pci_access *);
64 void (*cleanup)(struct pci_access *);
65 void (*scan)(struct pci_access *);
66 void (*fill_info)(struct pci_dev *, unsigned int flags);
67 int (*read)(struct pci_dev *, int pos, byte *buf, int len);
68 int (*write)(struct pci_dev *, int pos, byte *buf, int len);
69 int (*read_vpd)(struct pci_dev *, int pos, byte *buf, int len);
70 void (*init_dev)(struct pci_dev *);
71 void (*cleanup_dev)(struct pci_dev *);
75 void pci_generic_scan_bus(struct pci_access *, byte *busmap, int domain, int bus);
76 void pci_generic_scan_domain(struct pci_access *, int domain);
77 void pci_generic_scan(struct pci_access *);
78 void pci_generic_fill_info(struct pci_dev *, unsigned int flags);
79 int pci_generic_block_read(struct pci_dev *, int pos, byte *buf, int len);
80 int pci_generic_block_write(struct pci_dev *, int pos, byte *buf, int len);
83 int pci_emulated_read(struct pci_dev *d, int pos, byte *buf, int len);
86 void *pci_malloc(struct pci_access *, int);
87 void pci_mfree(void *);
88 char *pci_strdup(struct pci_access *a, const char *s);
89 struct pci_access *pci_clone_access(struct pci_access *a);
90 int pci_init_internal(struct pci_access *a, int skip_method);
92 void pci_init_v30(struct pci_access *a) VERSIONED_ABI;
93 void pci_init_v35(struct pci_access *a) VERSIONED_ABI;
96 struct pci_dev *pci_alloc_dev(struct pci_access *);
97 int pci_link_dev(struct pci_access *, struct pci_dev *);
99 int pci_fill_info_v30(struct pci_dev *, int flags) VERSIONED_ABI;
100 int pci_fill_info_v31(struct pci_dev *, int flags) VERSIONED_ABI;
101 int pci_fill_info_v32(struct pci_dev *, int flags) VERSIONED_ABI;
102 int pci_fill_info_v33(struct pci_dev *, int flags) VERSIONED_ABI;
103 int pci_fill_info_v34(struct pci_dev *, int flags) VERSIONED_ABI;
104 int pci_fill_info_v35(struct pci_dev *, int flags) VERSIONED_ABI;
105 int pci_fill_info_v38(struct pci_dev *, int flags) VERSIONED_ABI;
107 static inline int want_fill(struct pci_dev *d, unsigned want_fields, unsigned int try_fields)
109 want_fields &= try_fields;
110 if ((d->known_fields & want_fields) == want_fields)
114 d->known_fields |= try_fields;
119 static inline void clear_fill(struct pci_dev *d, unsigned clear_fields)
121 d->known_fields &= ~clear_fields;
124 struct pci_property {
125 struct pci_property *next;
130 char *pci_set_property(struct pci_dev *d, u32 key, char *value);
133 struct pci_param *pci_define_param(struct pci_access *acc, char *param, char *val, char *help);
134 int pci_set_param_internal(struct pci_access *acc, char *param, char *val, int copy);
135 void pci_free_params(struct pci_access *acc);
138 void pci_scan_caps(struct pci_dev *, unsigned int want_fields);
139 void pci_free_caps(struct pci_dev *);
141 extern struct pci_methods pm_intel_conf1, pm_intel_conf2, pm_linux_proc,
142 pm_fbsd_device, pm_aix_device, pm_nbsd_libpci, pm_obsd_device,
143 pm_dump, pm_linux_sysfs, pm_darwin, pm_sylixos_device, pm_hurd,
144 pm_mmio_conf1, pm_mmio_conf1_ext, pm_ecam,
145 pm_win32_cfgmgr32, pm_win32_kldbg, pm_win32_sysdbg, pm_aos_expansion;