/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * pnpbios.h - contains local definitions */ /* * Include file for the interface to a PnP BIOS * * Original BIOS code (C) 1998 Christian Schmidt (chr.schmidt@tu-bs.de) * PnP handler parts (c) 1998 Tom Lees <tom@lpsg.demon.co.uk> * Minor reorganizations by David Hinds <dahinds@users.sourceforge.net> */ /* * Return codes */ #define PNP_SUCCESS 0x00 #define PNP_NOT_SET_STATICALLY 0x7f #define PNP_UNKNOWN_FUNCTION 0x81 #define PNP_FUNCTION_NOT_SUPPORTED 0x82 #define PNP_INVALID_HANDLE 0x83 #define PNP_BAD_PARAMETER 0x84 #define PNP_SET_FAILED 0x85 #define PNP_EVENTS_NOT_PENDING 0x86 #define PNP_SYSTEM_NOT_DOCKED 0x87 #define PNP_NO_ISA_PNP_CARDS 0x88 #define PNP_UNABLE_TO_DETERMINE_DOCK_CAPABILITIES 0x89 #define PNP_CONFIG_CHANGE_FAILED_NO_BATTERY 0x8a #define PNP_CONFIG_CHANGE_FAILED_RESOURCE_CONFLICT 0x8b #define PNP_BUFFER_TOO_SMALL 0x8c #define PNP_USE_ESCD_SUPPORT 0x8d #define PNP_MESSAGE_NOT_SUPPORTED 0x8e #define PNP_HARDWARE_ERROR 0x8f #define ESCD_SUCCESS 0x00 #define ESCD_IO_ERROR_READING 0x55 #define ESCD_INVALID 0x56 #define ESCD_BUFFER_TOO_SMALL 0x59 #define ESCD_NVRAM_TOO_SMALL 0x5a #define ESCD_FUNCTION_NOT_SUPPORTED 0x81 /* * Events that can be received by "get event" */ #define PNPEV_ABOUT_TO_CHANGE_CONFIG 0x0001 #define PNPEV_DOCK_CHANGED 0x0002 #define PNPEV_SYSTEM_DEVICE_CHANGED 0x0003 #define PNPEV_CONFIG_CHANGED_FAILED 0x0004 #define PNPEV_UNKNOWN_SYSTEM_EVENT 0xffff /* 0x8000 through 0xfffe are OEM defined */ /* * Messages that should be sent through "send message" */ #define PNPMSG_OK 0x00 #define PNPMSG_ABORT 0x01 #define PNPMSG_UNDOCK_DEFAULT_ACTION 0x40 #define PNPMSG_POWER_OFF 0x41 #define PNPMSG_PNP_OS_ACTIVE 0x42 #define PNPMSG_PNP_OS_INACTIVE 0x43 /* * Plug and Play BIOS flags */ #define PNPBIOS_NO_DISABLE 0x0001 #define PNPBIOS_NO_CONFIG 0x0002 #define PNPBIOS_OUTPUT 0x0004 #define PNPBIOS_INPUT 0x0008 #define PNPBIOS_BOOTABLE 0x0010 #define PNPBIOS_DOCK 0x0020 #define PNPBIOS_REMOVABLE 0x0040 #define pnpbios_is_static(x) (((x)->flags & 0x0100) == 0x0000) #define pnpbios_is_dynamic(x) ((x)->flags & 0x0080) /* * Function Parameters */ #define PNPMODE_STATIC 1 #define PNPMODE_DYNAMIC 0 /* 0x8000 through 0xffff are OEM defined */ #pragma pack(1) struct pnp_dev_node_info { __u16 no_nodes; __u16 max_node_size; }; struct pnp_docking_station_info { __u32 location_id; __u32 serial; __u16 capabilities; }; struct pnp_isa_config_struc { __u8 revision; __u8 no_csns; __u16 isa_rd_data_port; __u16 reserved; }; struct escd_info_struc { __u16 min_escd_write_size; __u16 escd_size; __u32 nv_storage_base; }; struct pnp_bios_node { __u16 size; __u8 handle; __u32 eisa_id; __u8 type_code[3]; __u16 flags; __u8 data[]; }; #pragma pack() /* non-exported */ extern struct pnp_dev_node_info node_info; extern int pnp_bios_dev_node_info(struct pnp_dev_node_info *data); extern int pnp_bios_get_dev_node(u8 *nodenum, char config, struct pnp_bios_node *data); extern int pnp_bios_set_dev_node(u8 nodenum, char config, struct pnp_bios_node *data); extern int pnp_bios_get_stat_res(char *info); extern int pnp_bios_isapnp_config(struct pnp_isa_config_struc *data); extern int pnp_bios_escd_info(struct escd_info_struc *data); extern int pnp_bios_read_escd(char *data, u32 nvram_base); extern int pnp_bios_dock_station_info(struct pnp_docking_station_info *data); #pragma pack(1) union pnp_bios_install_struct { struct { u32 signature; /* "$PnP" */ u8 version; /* in BCD */ u8 length; /* length in bytes, currently 21h */ u16 control; /* system capabilities */ u8 checksum; /* all bytes must add up to 0 */ u32 eventflag; /* phys. address of the event flag */ u16 rmoffset; /* real mode entry point */ u16 rmcseg; u16 pm16offset; /* 16 bit protected mode entry */ u32 pm16cseg; u32 deviceID; /* EISA encoded system ID or 0 */ u16 rmdseg; /* real mode data segment */ u32 pm16dseg; /* 16 bit pm data segment base */ } fields; char chars[0x21]; /* To calculate the checksum */ }; #pragma pack() extern int pnp_bios_present(void); extern int pnpbios_dont_use_current_config; extern int pnpbios_parse_data_stream(struct pnp_dev *dev, struct pnp_bios_node * node); extern int pnpbios_read_resources_from_node(struct pnp_dev *dev, struct pnp_bios_node *node); extern int pnpbios_write_resources_to_node(struct pnp_dev *dev, struct pnp_bios_node *node); extern void pnpid32_to_pnpid(u32 id, char *str); extern void pnpbios_print_status(const char * module, u16 status); extern void pnpbios_calls_init(union pnp_bios_install_struct * header); #ifdef CONFIG_PNPBIOS_PROC_FS extern int pnpbios_interface_attach_device(struct pnp_bios_node * node); extern int pnpbios_proc_init (void); extern void pnpbios_proc_exit (void); #else static inline int pnpbios_interface_attach_device(struct pnp_bios_node * node) { return 0; } static inline int pnpbios_proc_init (void) { return 0; } static inline void pnpbios_proc_exit (void) { ; } #endif /* CONFIG_PNPBIOS_PROC_FS */