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
pnpbios_interface_attach_device(struct pnp_bios_node * node)179 static inline int pnpbios_interface_attach_device(struct pnp_bios_node * node) { return 0; }
pnpbios_proc_init(void)180 static inline int pnpbios_proc_init (void) { return 0; }
pnpbios_proc_exit(void)181 static inline void pnpbios_proc_exit (void) { ; }
182 #endif /* CONFIG_PNPBIOS_PROC_FS */
183