1 /* 2 * pnpbios.h - contains local definitions 3 */ 4 5 /* 6 * Include file for the interface to a PnP BIOS 7 * 8 * Original BIOS code (C) 1998 Christian Schmidt (chr.schmidt@tu-bs.de) 9 * PnP handler parts (c) 1998 Tom Lees <tom@lpsg.demon.co.uk> 10 * Minor reorganizations by David Hinds <dahinds@users.sourceforge.net> 11 * 12 * This program is free software; you can redistribute it and/or modify it 13 * under the terms of the GNU General Public License as published by the 14 * Free Software Foundation; either version 2, or (at your option) any 15 * later version. 16 * 17 * This program is distributed in the hope that it will be useful, but 18 * WITHOUT ANY WARRANTY; without even the implied warranty of 19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 20 * General Public License for more details. 21 * 22 * You should have received a copy of the GNU General Public License 23 * along with this program; if not, write to the Free Software 24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 25 */ 26 27 /* 28 * Return codes 29 */ 30 #define PNP_SUCCESS 0x00 31 #define PNP_NOT_SET_STATICALLY 0x7f 32 #define PNP_UNKNOWN_FUNCTION 0x81 33 #define PNP_FUNCTION_NOT_SUPPORTED 0x82 34 #define PNP_INVALID_HANDLE 0x83 35 #define PNP_BAD_PARAMETER 0x84 36 #define PNP_SET_FAILED 0x85 37 #define PNP_EVENTS_NOT_PENDING 0x86 38 #define PNP_SYSTEM_NOT_DOCKED 0x87 39 #define PNP_NO_ISA_PNP_CARDS 0x88 40 #define PNP_UNABLE_TO_DETERMINE_DOCK_CAPABILITIES 0x89 41 #define PNP_CONFIG_CHANGE_FAILED_NO_BATTERY 0x8a 42 #define PNP_CONFIG_CHANGE_FAILED_RESOURCE_CONFLICT 0x8b 43 #define PNP_BUFFER_TOO_SMALL 0x8c 44 #define PNP_USE_ESCD_SUPPORT 0x8d 45 #define PNP_MESSAGE_NOT_SUPPORTED 0x8e 46 #define PNP_HARDWARE_ERROR 0x8f 47 48 #define ESCD_SUCCESS 0x00 49 #define ESCD_IO_ERROR_READING 0x55 50 #define ESCD_INVALID 0x56 51 #define ESCD_BUFFER_TOO_SMALL 0x59 52 #define ESCD_NVRAM_TOO_SMALL 0x5a 53 #define ESCD_FUNCTION_NOT_SUPPORTED 0x81 54 55 /* 56 * Events that can be received by "get event" 57 */ 58 #define PNPEV_ABOUT_TO_CHANGE_CONFIG 0x0001 59 #define PNPEV_DOCK_CHANGED 0x0002 60 #define PNPEV_SYSTEM_DEVICE_CHANGED 0x0003 61 #define PNPEV_CONFIG_CHANGED_FAILED 0x0004 62 #define PNPEV_UNKNOWN_SYSTEM_EVENT 0xffff 63 /* 0x8000 through 0xfffe are OEM defined */ 64 65 /* 66 * Messages that should be sent through "send message" 67 */ 68 #define PNPMSG_OK 0x00 69 #define PNPMSG_ABORT 0x01 70 #define PNPMSG_UNDOCK_DEFAULT_ACTION 0x40 71 #define PNPMSG_POWER_OFF 0x41 72 #define PNPMSG_PNP_OS_ACTIVE 0x42 73 #define PNPMSG_PNP_OS_INACTIVE 0x43 74 75 /* 76 * Plug and Play BIOS flags 77 */ 78 #define PNPBIOS_NO_DISABLE 0x0001 79 #define PNPBIOS_NO_CONFIG 0x0002 80 #define PNPBIOS_OUTPUT 0x0004 81 #define PNPBIOS_INPUT 0x0008 82 #define PNPBIOS_BOOTABLE 0x0010 83 #define PNPBIOS_DOCK 0x0020 84 #define PNPBIOS_REMOVABLE 0x0040 85 #define pnpbios_is_static(x) (((x)->flags & 0x0100) == 0x0000) 86 #define pnpbios_is_dynamic(x) ((x)->flags & 0x0080) 87 88 /* 89 * Function Parameters 90 */ 91 #define PNPMODE_STATIC 1 92 #define PNPMODE_DYNAMIC 0 93 94 /* 0x8000 through 0xffff are OEM defined */ 95 96 #pragma pack(1) 97 struct pnp_dev_node_info { 98 __u16 no_nodes; 99 __u16 max_node_size; 100 }; 101 struct pnp_docking_station_info { 102 __u32 location_id; 103 __u32 serial; 104 __u16 capabilities; 105 }; 106 struct pnp_isa_config_struc { 107 __u8 revision; 108 __u8 no_csns; 109 __u16 isa_rd_data_port; 110 __u16 reserved; 111 }; 112 struct escd_info_struc { 113 __u16 min_escd_write_size; 114 __u16 escd_size; 115 __u32 nv_storage_base; 116 }; 117 struct pnp_bios_node { 118 __u16 size; 119 __u8 handle; 120 __u32 eisa_id; 121 __u8 type_code[3]; 122 __u16 flags; 123 __u8 data[0]; 124 }; 125 #pragma pack() 126 127 /* non-exported */ 128 extern struct pnp_dev_node_info node_info; 129 130 extern int pnp_bios_dev_node_info(struct pnp_dev_node_info *data); 131 extern int pnp_bios_get_dev_node(u8 *nodenum, char config, 132 struct pnp_bios_node *data); 133 extern int pnp_bios_set_dev_node(u8 nodenum, char config, 134 struct pnp_bios_node *data); 135 extern int pnp_bios_get_stat_res(char *info); 136 extern int pnp_bios_isapnp_config(struct pnp_isa_config_struc *data); 137 extern int pnp_bios_escd_info(struct escd_info_struc *data); 138 extern int pnp_bios_read_escd(char *data, u32 nvram_base); 139 extern int pnp_bios_dock_station_info(struct pnp_docking_station_info *data); 140 141 #pragma pack(1) 142 union pnp_bios_install_struct { 143 struct { 144 u32 signature; /* "$PnP" */ 145 u8 version; /* in BCD */ 146 u8 length; /* length in bytes, currently 21h */ 147 u16 control; /* system capabilities */ 148 u8 checksum; /* all bytes must add up to 0 */ 149 150 u32 eventflag; /* phys. address of the event flag */ 151 u16 rmoffset; /* real mode entry point */ 152 u16 rmcseg; 153 u16 pm16offset; /* 16 bit protected mode entry */ 154 u32 pm16cseg; 155 u32 deviceID; /* EISA encoded system ID or 0 */ 156 u16 rmdseg; /* real mode data segment */ 157 u32 pm16dseg; /* 16 bit pm data segment base */ 158 } fields; 159 char chars[0x21]; /* To calculate the checksum */ 160 }; 161 #pragma pack() 162 163 extern int pnp_bios_present(void); 164 extern int pnpbios_dont_use_current_config; 165 166 extern int pnpbios_parse_data_stream(struct pnp_dev *dev, struct pnp_bios_node * node); 167 extern int pnpbios_read_resources_from_node(struct pnp_dev *dev, struct pnp_bios_node *node); 168 extern int pnpbios_write_resources_to_node(struct pnp_dev *dev, struct pnp_bios_node *node); 169 extern void pnpid32_to_pnpid(u32 id, char *str); 170 171 extern void pnpbios_print_status(const char * module, u16 status); 172 extern void pnpbios_calls_init(union pnp_bios_install_struct * header); 173 174 #ifdef CONFIG_PNPBIOS_PROC_FS 175 extern int pnpbios_interface_attach_device(struct pnp_bios_node * node); 176 extern int pnpbios_proc_init (void); 177 extern void pnpbios_proc_exit (void); 178 #else 179 static inline int pnpbios_interface_attach_device(struct pnp_bios_node * node) { return 0; } 180 static inline int pnpbios_proc_init (void) { return 0; } 181 static inline void pnpbios_proc_exit (void) { ; } 182 #endif /* CONFIG_PNPBIOS_PROC_FS */ 183