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Diffstat (limited to 'lib/internal.h')
| -rw-r--r-- | lib/internal.h | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/lib/internal.h b/lib/internal.h new file mode 100644 index 0000000..68e9fa0 --- /dev/null +++ b/lib/internal.h @@ -0,0 +1,148 @@ +/* + * The PCI Library -- Internal Stuff + * + * Copyright (c) 1997--2022 Martin Mares <mj@ucw.cz> + * + * Can be freely distributed and used under the terms of the GNU GPL v2+ + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#ifndef _INTERNAL_H +#define _INTERNAL_H + +#include "config.h" + +#ifdef PCI_SHARED_LIB +#define PCI_ABI __attribute__((visibility("default"))) +// Functions, which are bound to externally visible symbols by the versioning +// mechanism, have to be declared as VERSIONED. Otherwise, GCC with global +// optimizations is happy to optimize them away, leading to linker failures. +#define VERSIONED_ABI __attribute__((used)) PCI_ABI +#ifdef __APPLE__ +#define STATIC_ALIAS(_decl, _for) VERSIONED_ABI _decl { return _for; } +#define DEFINE_ALIAS(_decl, _for) +#define SYMBOL_VERSION(_int, _ext) +#else +#define DEFINE_ALIAS(_decl, _for) extern _decl __attribute__((alias(#_for))) VERSIONED_ABI +#ifdef _WIN32 +#define STATIC_ALIAS(_decl, _for) VERSIONED_ABI _decl { return _for; } +/* GCC does not support asm .symver directive for Windows targets, so define new external global function symbol as alias to internal symbol */ +#define SYMBOL_VERSION(_int, _ext) asm(".globl\t" PCI_STRINGIFY(__MINGW_USYMBOL(_ext)) "\n\t" \ + ".def\t" PCI_STRINGIFY(__MINGW_USYMBOL(_ext)) ";\t.scl\t2;\t.type\t32;\t.endef\n\t" \ + ".set\t" PCI_STRINGIFY(__MINGW_USYMBOL(_ext)) "," PCI_STRINGIFY(__MINGW_USYMBOL(_int))) +#else +#define STATIC_ALIAS(_decl, _for) +#define SYMBOL_VERSION(_int, _ext) asm(".symver " #_int "," #_ext) +#endif +#endif +#else +#define VERSIONED_ABI +#define STATIC_ALIAS(_decl, _for) _decl { return _for; } +#define DEFINE_ALIAS(_decl, _for) +#define SYMBOL_VERSION(_int, _ext) +#endif + +#include "pci.h" +#include "sysdep.h" + +/* Old 32-bit-only versions of MinGW32 do not define __MINGW_USYMBOL macro */ +#ifdef __MINGW32__ +#ifndef __MINGW_USYMBOL +#define __MINGW_USYMBOL(sym) _##sym +#endif +#endif + +#define _PCI_STRINGIFY(x) #x +#define PCI_STRINGIFY(x) _PCI_STRINGIFY(x) + +struct pci_methods { + char *name; + char *help; + void (*config)(struct pci_access *); + int (*detect)(struct pci_access *); + void (*init)(struct pci_access *); + void (*cleanup)(struct pci_access *); + void (*scan)(struct pci_access *); + void (*fill_info)(struct pci_dev *, unsigned int flags); + int (*read)(struct pci_dev *, int pos, byte *buf, int len); + int (*write)(struct pci_dev *, int pos, byte *buf, int len); + int (*read_vpd)(struct pci_dev *, int pos, byte *buf, int len); + void (*init_dev)(struct pci_dev *); + void (*cleanup_dev)(struct pci_dev *); +}; + +/* generic.c */ +void pci_generic_scan_bus(struct pci_access *, byte *busmap, int domain, int bus); +void pci_generic_scan_domain(struct pci_access *, int domain); +void pci_generic_scan(struct pci_access *); +void pci_generic_fill_info(struct pci_dev *, unsigned int flags); +int pci_generic_block_read(struct pci_dev *, int pos, byte *buf, int len); +int pci_generic_block_write(struct pci_dev *, int pos, byte *buf, int len); + +/* emulated.c */ +int pci_emulated_read(struct pci_dev *d, int pos, byte *buf, int len); + +/* init.c */ +void *pci_malloc(struct pci_access *, int); +void pci_mfree(void *); +char *pci_strdup(struct pci_access *a, const char *s); +struct pci_access *pci_clone_access(struct pci_access *a); +int pci_init_internal(struct pci_access *a, int skip_method); + +void pci_init_v30(struct pci_access *a) VERSIONED_ABI; +void pci_init_v35(struct pci_access *a) VERSIONED_ABI; + +/* access.c */ +struct pci_dev *pci_alloc_dev(struct pci_access *); +int pci_link_dev(struct pci_access *, struct pci_dev *); + +int pci_fill_info_v30(struct pci_dev *, int flags) VERSIONED_ABI; +int pci_fill_info_v31(struct pci_dev *, int flags) VERSIONED_ABI; +int pci_fill_info_v32(struct pci_dev *, int flags) VERSIONED_ABI; +int pci_fill_info_v33(struct pci_dev *, int flags) VERSIONED_ABI; +int pci_fill_info_v34(struct pci_dev *, int flags) VERSIONED_ABI; +int pci_fill_info_v35(struct pci_dev *, int flags) VERSIONED_ABI; +int pci_fill_info_v38(struct pci_dev *, int flags) VERSIONED_ABI; + +static inline int want_fill(struct pci_dev *d, unsigned want_fields, unsigned int try_fields) +{ + want_fields &= try_fields; + if ((d->known_fields & want_fields) == want_fields) + return 0; + else + { + d->known_fields |= try_fields; + return 1; + } +} + +static inline void clear_fill(struct pci_dev *d, unsigned clear_fields) +{ + d->known_fields &= ~clear_fields; +} + +struct pci_property { + struct pci_property *next; + u32 key; + char value[1]; +}; + +char *pci_set_property(struct pci_dev *d, u32 key, char *value); + +/* params.c */ +struct pci_param *pci_define_param(struct pci_access *acc, char *param, char *val, char *help); +int pci_set_param_internal(struct pci_access *acc, char *param, char *val, int copy); +void pci_free_params(struct pci_access *acc); + +/* caps.c */ +void pci_scan_caps(struct pci_dev *, unsigned int want_fields); +void pci_free_caps(struct pci_dev *); + +extern struct pci_methods pm_intel_conf1, pm_intel_conf2, pm_linux_proc, + pm_fbsd_device, pm_aix_device, pm_nbsd_libpci, pm_obsd_device, + pm_dump, pm_linux_sysfs, pm_darwin, pm_sylixos_device, pm_hurd, + pm_mmio_conf1, pm_mmio_conf1_ext, pm_ecam, + pm_win32_cfgmgr32, pm_win32_kldbg, pm_win32_sysdbg, pm_aos_expansion; + +#endif |