169 lines · c
1/* SPDX-License-Identifier: GPL-2.0-or-later */2/*3 * pnpbios.h - contains local definitions4 */5 6/*7 * Include file for the interface to a PnP BIOS8 *9 * Original BIOS code (C) 1998 Christian Schmidt (chr.schmidt@tu-bs.de)10 * PnP handler parts (c) 1998 Tom Lees <tom@lpsg.demon.co.uk>11 * Minor reorganizations by David Hinds <dahinds@users.sourceforge.net>12 */13 14/*15 * Return codes16 */17#define PNP_SUCCESS 0x0018#define PNP_NOT_SET_STATICALLY 0x7f19#define PNP_UNKNOWN_FUNCTION 0x8120#define PNP_FUNCTION_NOT_SUPPORTED 0x8221#define PNP_INVALID_HANDLE 0x8322#define PNP_BAD_PARAMETER 0x8423#define PNP_SET_FAILED 0x8524#define PNP_EVENTS_NOT_PENDING 0x8625#define PNP_SYSTEM_NOT_DOCKED 0x8726#define PNP_NO_ISA_PNP_CARDS 0x8827#define PNP_UNABLE_TO_DETERMINE_DOCK_CAPABILITIES 0x8928#define PNP_CONFIG_CHANGE_FAILED_NO_BATTERY 0x8a29#define PNP_CONFIG_CHANGE_FAILED_RESOURCE_CONFLICT 0x8b30#define PNP_BUFFER_TOO_SMALL 0x8c31#define PNP_USE_ESCD_SUPPORT 0x8d32#define PNP_MESSAGE_NOT_SUPPORTED 0x8e33#define PNP_HARDWARE_ERROR 0x8f34 35#define ESCD_SUCCESS 0x0036#define ESCD_IO_ERROR_READING 0x5537#define ESCD_INVALID 0x5638#define ESCD_BUFFER_TOO_SMALL 0x5939#define ESCD_NVRAM_TOO_SMALL 0x5a40#define ESCD_FUNCTION_NOT_SUPPORTED 0x8141 42/*43 * Events that can be received by "get event"44 */45#define PNPEV_ABOUT_TO_CHANGE_CONFIG 0x000146#define PNPEV_DOCK_CHANGED 0x000247#define PNPEV_SYSTEM_DEVICE_CHANGED 0x000348#define PNPEV_CONFIG_CHANGED_FAILED 0x000449#define PNPEV_UNKNOWN_SYSTEM_EVENT 0xffff50/* 0x8000 through 0xfffe are OEM defined */51 52/*53 * Messages that should be sent through "send message"54 */55#define PNPMSG_OK 0x0056#define PNPMSG_ABORT 0x0157#define PNPMSG_UNDOCK_DEFAULT_ACTION 0x4058#define PNPMSG_POWER_OFF 0x4159#define PNPMSG_PNP_OS_ACTIVE 0x4260#define PNPMSG_PNP_OS_INACTIVE 0x4361 62/*63 * Plug and Play BIOS flags64 */65#define PNPBIOS_NO_DISABLE 0x000166#define PNPBIOS_NO_CONFIG 0x000267#define PNPBIOS_OUTPUT 0x000468#define PNPBIOS_INPUT 0x000869#define PNPBIOS_BOOTABLE 0x001070#define PNPBIOS_DOCK 0x002071#define PNPBIOS_REMOVABLE 0x004072#define pnpbios_is_static(x) (((x)->flags & 0x0100) == 0x0000)73#define pnpbios_is_dynamic(x) ((x)->flags & 0x0080)74 75/*76 * Function Parameters77 */78#define PNPMODE_STATIC 179#define PNPMODE_DYNAMIC 080 81/* 0x8000 through 0xffff are OEM defined */82 83#pragma pack(1)84struct pnp_dev_node_info {85 __u16 no_nodes;86 __u16 max_node_size;87};88struct pnp_docking_station_info {89 __u32 location_id;90 __u32 serial;91 __u16 capabilities;92};93struct pnp_isa_config_struc {94 __u8 revision;95 __u8 no_csns;96 __u16 isa_rd_data_port;97 __u16 reserved;98};99struct escd_info_struc {100 __u16 min_escd_write_size;101 __u16 escd_size;102 __u32 nv_storage_base;103};104struct pnp_bios_node {105 __u16 size;106 __u8 handle;107 __u32 eisa_id;108 __u8 type_code[3];109 __u16 flags;110 __u8 data[];111};112#pragma pack()113 114/* non-exported */115extern struct pnp_dev_node_info node_info;116 117extern int pnp_bios_dev_node_info(struct pnp_dev_node_info *data);118extern int pnp_bios_get_dev_node(u8 *nodenum, char config,119 struct pnp_bios_node *data);120extern int pnp_bios_set_dev_node(u8 nodenum, char config,121 struct pnp_bios_node *data);122extern int pnp_bios_get_stat_res(char *info);123extern int pnp_bios_isapnp_config(struct pnp_isa_config_struc *data);124extern int pnp_bios_escd_info(struct escd_info_struc *data);125extern int pnp_bios_read_escd(char *data, u32 nvram_base);126extern int pnp_bios_dock_station_info(struct pnp_docking_station_info *data);127 128#pragma pack(1)129union pnp_bios_install_struct {130 struct {131 u32 signature; /* "$PnP" */132 u8 version; /* in BCD */133 u8 length; /* length in bytes, currently 21h */134 u16 control; /* system capabilities */135 u8 checksum; /* all bytes must add up to 0 */136 137 u32 eventflag; /* phys. address of the event flag */138 u16 rmoffset; /* real mode entry point */139 u16 rmcseg;140 u16 pm16offset; /* 16 bit protected mode entry */141 u32 pm16cseg;142 u32 deviceID; /* EISA encoded system ID or 0 */143 u16 rmdseg; /* real mode data segment */144 u32 pm16dseg; /* 16 bit pm data segment base */145 } fields;146 char chars[0x21]; /* To calculate the checksum */147};148#pragma pack()149 150extern int pnp_bios_present(void);151extern int pnpbios_dont_use_current_config;152 153extern int pnpbios_parse_data_stream(struct pnp_dev *dev, struct pnp_bios_node * node);154extern int pnpbios_read_resources_from_node(struct pnp_dev *dev, struct pnp_bios_node *node);155extern int pnpbios_write_resources_to_node(struct pnp_dev *dev, struct pnp_bios_node *node);156 157extern void pnpbios_print_status(const char * module, u16 status);158extern void pnpbios_calls_init(union pnp_bios_install_struct * header);159 160#ifdef CONFIG_PNPBIOS_PROC_FS161extern int pnpbios_interface_attach_device(struct pnp_bios_node * node);162extern int pnpbios_proc_init (void);163extern void pnpbios_proc_exit (void);164#else165static inline int pnpbios_interface_attach_device(struct pnp_bios_node * node) { return 0; }166static inline int pnpbios_proc_init (void) { return 0; }167static inline void pnpbios_proc_exit (void) { ; }168#endif /* CONFIG_PNPBIOS_PROC_FS */169