1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
2 | /* |
3 | * pnpbios.h - contains local definitions |
4 | */ |
5 | |
6 | /* |
7 | * Include file for the interface to a PnP BIOS |
8 | * |
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 codes |
16 | */ |
17 | #define PNP_SUCCESS 0x00 |
18 | #define PNP_NOT_SET_STATICALLY 0x7f |
19 | #define PNP_UNKNOWN_FUNCTION 0x81 |
20 | #define PNP_FUNCTION_NOT_SUPPORTED 0x82 |
21 | #define PNP_INVALID_HANDLE 0x83 |
22 | #define PNP_BAD_PARAMETER 0x84 |
23 | #define PNP_SET_FAILED 0x85 |
24 | #define PNP_EVENTS_NOT_PENDING 0x86 |
25 | #define PNP_SYSTEM_NOT_DOCKED 0x87 |
26 | #define PNP_NO_ISA_PNP_CARDS 0x88 |
27 | #define PNP_UNABLE_TO_DETERMINE_DOCK_CAPABILITIES 0x89 |
28 | #define PNP_CONFIG_CHANGE_FAILED_NO_BATTERY 0x8a |
29 | #define PNP_CONFIG_CHANGE_FAILED_RESOURCE_CONFLICT 0x8b |
30 | #define PNP_BUFFER_TOO_SMALL 0x8c |
31 | #define PNP_USE_ESCD_SUPPORT 0x8d |
32 | #define PNP_MESSAGE_NOT_SUPPORTED 0x8e |
33 | #define PNP_HARDWARE_ERROR 0x8f |
34 | |
35 | #define ESCD_SUCCESS 0x00 |
36 | #define ESCD_IO_ERROR_READING 0x55 |
37 | #define ESCD_INVALID 0x56 |
38 | #define ESCD_BUFFER_TOO_SMALL 0x59 |
39 | #define ESCD_NVRAM_TOO_SMALL 0x5a |
40 | #define ESCD_FUNCTION_NOT_SUPPORTED 0x81 |
41 | |
42 | /* |
43 | * Events that can be received by "get event" |
44 | */ |
45 | #define PNPEV_ABOUT_TO_CHANGE_CONFIG 0x0001 |
46 | #define PNPEV_DOCK_CHANGED 0x0002 |
47 | #define PNPEV_SYSTEM_DEVICE_CHANGED 0x0003 |
48 | #define PNPEV_CONFIG_CHANGED_FAILED 0x0004 |
49 | #define PNPEV_UNKNOWN_SYSTEM_EVENT 0xffff |
50 | /* 0x8000 through 0xfffe are OEM defined */ |
51 | |
52 | /* |
53 | * Messages that should be sent through "send message" |
54 | */ |
55 | #define PNPMSG_OK 0x00 |
56 | #define PNPMSG_ABORT 0x01 |
57 | #define PNPMSG_UNDOCK_DEFAULT_ACTION 0x40 |
58 | #define PNPMSG_POWER_OFF 0x41 |
59 | #define PNPMSG_PNP_OS_ACTIVE 0x42 |
60 | #define PNPMSG_PNP_OS_INACTIVE 0x43 |
61 | |
62 | /* |
63 | * Plug and Play BIOS flags |
64 | */ |
65 | #define PNPBIOS_NO_DISABLE 0x0001 |
66 | #define PNPBIOS_NO_CONFIG 0x0002 |
67 | #define PNPBIOS_OUTPUT 0x0004 |
68 | #define PNPBIOS_INPUT 0x0008 |
69 | #define PNPBIOS_BOOTABLE 0x0010 |
70 | #define PNPBIOS_DOCK 0x0020 |
71 | #define PNPBIOS_REMOVABLE 0x0040 |
72 | #define pnpbios_is_static(x) (((x)->flags & 0x0100) == 0x0000) |
73 | #define pnpbios_is_dynamic(x) ((x)->flags & 0x0080) |
74 | |
75 | /* |
76 | * Function Parameters |
77 | */ |
78 | #define PNPMODE_STATIC 1 |
79 | #define PNPMODE_DYNAMIC 0 |
80 | |
81 | /* 0x8000 through 0xffff are OEM defined */ |
82 | |
83 | #pragma pack(1) |
84 | struct pnp_dev_node_info { |
85 | __u16 no_nodes; |
86 | __u16 max_node_size; |
87 | }; |
88 | struct pnp_docking_station_info { |
89 | __u32 location_id; |
90 | __u32 serial; |
91 | __u16 capabilities; |
92 | }; |
93 | struct pnp_isa_config_struc { |
94 | __u8 revision; |
95 | __u8 no_csns; |
96 | __u16 isa_rd_data_port; |
97 | __u16 reserved; |
98 | }; |
99 | struct escd_info_struc { |
100 | __u16 min_escd_write_size; |
101 | __u16 escd_size; |
102 | __u32 nv_storage_base; |
103 | }; |
104 | struct 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 */ |
115 | extern struct pnp_dev_node_info node_info; |
116 | |
117 | extern int pnp_bios_dev_node_info(struct pnp_dev_node_info *data); |
118 | extern int pnp_bios_get_dev_node(u8 *nodenum, char config, |
119 | struct pnp_bios_node *data); |
120 | extern int pnp_bios_set_dev_node(u8 nodenum, char config, |
121 | struct pnp_bios_node *data); |
122 | extern int pnp_bios_get_stat_res(char *info); |
123 | extern int pnp_bios_isapnp_config(struct pnp_isa_config_struc *data); |
124 | extern int pnp_bios_escd_info(struct escd_info_struc *data); |
125 | extern int pnp_bios_read_escd(char *data, u32 nvram_base); |
126 | extern int pnp_bios_dock_station_info(struct pnp_docking_station_info *data); |
127 | |
128 | #pragma pack(1) |
129 | union 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 | |
150 | extern int pnp_bios_present(void); |
151 | extern int pnpbios_dont_use_current_config; |
152 | |
153 | extern int pnpbios_parse_data_stream(struct pnp_dev *dev, struct pnp_bios_node * node); |
154 | extern int pnpbios_read_resources_from_node(struct pnp_dev *dev, struct pnp_bios_node *node); |
155 | extern int pnpbios_write_resources_to_node(struct pnp_dev *dev, struct pnp_bios_node *node); |
156 | |
157 | extern void pnpbios_print_status(const char * module, u16 status); |
158 | extern void pnpbios_calls_init(union pnp_bios_install_struct * ); |
159 | |
160 | #ifdef CONFIG_PNPBIOS_PROC_FS |
161 | extern int pnpbios_interface_attach_device(struct pnp_bios_node * node); |
162 | extern int pnpbios_proc_init (void); |
163 | extern void pnpbios_proc_exit (void); |
164 | #else |
165 | static inline int pnpbios_interface_attach_device(struct pnp_bios_node * node) { return 0; } |
166 | static inline int pnpbios_proc_init (void) { return 0; } |
167 | static inline void pnpbios_proc_exit (void) { ; } |
168 | #endif /* CONFIG_PNPBIOS_PROC_FS */ |
169 | |