exec: remove argv_len from struct linux_binprm
[linux-3.10.git] / include / linux / edd.h
1 /*
2  * linux/include/linux/edd.h
3  *  Copyright (C) 2002, 2003, 2004 Dell Inc.
4  *  by Matt Domsch <Matt_Domsch@dell.com>
5  *
6  * structures and definitions for the int 13h, ax={41,48}h
7  * BIOS Enhanced Disk Drive Services
8  * This is based on the T13 group document D1572 Revision 0 (August 14 2002)
9  * available at http://www.t13.org/docs2002/d1572r0.pdf.  It is
10  * very similar to D1484 Revision 3 http://www.t13.org/docs2002/d1484r3.pdf
11  *
12  * In a nutshell, arch/{i386,x86_64}/boot/setup.S populates a scratch
13  * table in the boot_params that contains a list of BIOS-enumerated
14  * boot devices.
15  * In arch/{i386,x86_64}/kernel/setup.c, this information is
16  * transferred into the edd structure, and in drivers/firmware/edd.c, that
17  * information is used to identify BIOS boot disk.  The code in setup.S
18  * is very sensitive to the size of these structures.
19  *
20  * This program is free software; you can redistribute it and/or modify
21  * it under the terms of the GNU General Public License v2.0 as published by
22  * the Free Software Foundation
23  *
24  * This program is distributed in the hope that it will be useful,
25  * but WITHOUT ANY WARRANTY; without even the implied warranty of
26  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
27  * GNU General Public License for more details.
28  *
29  */
30 #ifndef _LINUX_EDD_H
31 #define _LINUX_EDD_H
32
33 #define EDDNR 0x1e9             /* addr of number of edd_info structs at EDDBUF
34                                    in boot_params - treat this as 1 byte  */
35 #define EDDBUF  0xd00           /* addr of edd_info structs in boot_params */
36 #define EDDMAXNR 6              /* number of edd_info structs starting at EDDBUF  */
37 #define EDDEXTSIZE 8            /* change these if you muck with the structures */
38 #define EDDPARMSIZE 74
39 #define CHECKEXTENSIONSPRESENT 0x41
40 #define GETDEVICEPARAMETERS 0x48
41 #define LEGACYGETDEVICEPARAMETERS 0x08
42 #define EDDMAGIC1 0x55AA
43 #define EDDMAGIC2 0xAA55
44
45
46 #define READ_SECTORS 0x02         /* int13 AH=0x02 is READ_SECTORS command */
47 #define EDD_MBR_SIG_OFFSET 0x1B8  /* offset of signature in the MBR */
48 #define EDD_MBR_SIG_BUF    0x290  /* addr in boot params */
49 #define EDD_MBR_SIG_MAX 16        /* max number of signatures to store */
50 #define EDD_MBR_SIG_NR_BUF 0x1ea  /* addr of number of MBR signtaures at EDD_MBR_SIG_BUF
51                                      in boot_params - treat this as 1 byte  */
52
53 #ifndef __ASSEMBLY__
54
55 #define EDD_EXT_FIXED_DISK_ACCESS           (1 << 0)
56 #define EDD_EXT_DEVICE_LOCKING_AND_EJECTING (1 << 1)
57 #define EDD_EXT_ENHANCED_DISK_DRIVE_SUPPORT (1 << 2)
58 #define EDD_EXT_64BIT_EXTENSIONS            (1 << 3)
59
60 #define EDD_INFO_DMA_BOUNDARY_ERROR_TRANSPARENT (1 << 0)
61 #define EDD_INFO_GEOMETRY_VALID                (1 << 1)
62 #define EDD_INFO_REMOVABLE                     (1 << 2)
63 #define EDD_INFO_WRITE_VERIFY                  (1 << 3)
64 #define EDD_INFO_MEDIA_CHANGE_NOTIFICATION     (1 << 4)
65 #define EDD_INFO_LOCKABLE                      (1 << 5)
66 #define EDD_INFO_NO_MEDIA_PRESENT              (1 << 6)
67 #define EDD_INFO_USE_INT13_FN50                (1 << 7)
68
69 struct edd_device_params {
70         __u16 length;
71         __u16 info_flags;
72         __u32 num_default_cylinders;
73         __u32 num_default_heads;
74         __u32 sectors_per_track;
75         __u64 number_of_sectors;
76         __u16 bytes_per_sector;
77         __u32 dpte_ptr;         /* 0xFFFFFFFF for our purposes */
78         __u16 key;              /* = 0xBEDD */
79         __u8 device_path_info_length;   /* = 44 */
80         __u8 reserved2;
81         __u16 reserved3;
82         __u8 host_bus_type[4];
83         __u8 interface_type[8];
84         union {
85                 struct {
86                         __u16 base_address;
87                         __u16 reserved1;
88                         __u32 reserved2;
89                 } __attribute__ ((packed)) isa;
90                 struct {
91                         __u8 bus;
92                         __u8 slot;
93                         __u8 function;
94                         __u8 channel;
95                         __u32 reserved;
96                 } __attribute__ ((packed)) pci;
97                 /* pcix is same as pci */
98                 struct {
99                         __u64 reserved;
100                 } __attribute__ ((packed)) ibnd;
101                 struct {
102                         __u64 reserved;
103                 } __attribute__ ((packed)) xprs;
104                 struct {
105                         __u64 reserved;
106                 } __attribute__ ((packed)) htpt;
107                 struct {
108                         __u64 reserved;
109                 } __attribute__ ((packed)) unknown;
110         } interface_path;
111         union {
112                 struct {
113                         __u8 device;
114                         __u8 reserved1;
115                         __u16 reserved2;
116                         __u32 reserved3;
117                         __u64 reserved4;
118                 } __attribute__ ((packed)) ata;
119                 struct {
120                         __u8 device;
121                         __u8 lun;
122                         __u8 reserved1;
123                         __u8 reserved2;
124                         __u32 reserved3;
125                         __u64 reserved4;
126                 } __attribute__ ((packed)) atapi;
127                 struct {
128                         __u16 id;
129                         __u64 lun;
130                         __u16 reserved1;
131                         __u32 reserved2;
132                 } __attribute__ ((packed)) scsi;
133                 struct {
134                         __u64 serial_number;
135                         __u64 reserved;
136                 } __attribute__ ((packed)) usb;
137                 struct {
138                         __u64 eui;
139                         __u64 reserved;
140                 } __attribute__ ((packed)) i1394;
141                 struct {
142                         __u64 wwid;
143                         __u64 lun;
144                 } __attribute__ ((packed)) fibre;
145                 struct {
146                         __u64 identity_tag;
147                         __u64 reserved;
148                 } __attribute__ ((packed)) i2o;
149                 struct {
150                         __u32 array_number;
151                         __u32 reserved1;
152                         __u64 reserved2;
153                 } __attribute__ ((packed)) raid;
154                 struct {
155                         __u8 device;
156                         __u8 reserved1;
157                         __u16 reserved2;
158                         __u32 reserved3;
159                         __u64 reserved4;
160                 } __attribute__ ((packed)) sata;
161                 struct {
162                         __u64 reserved1;
163                         __u64 reserved2;
164                 } __attribute__ ((packed)) unknown;
165         } device_path;
166         __u8 reserved4;
167         __u8 checksum;
168 } __attribute__ ((packed));
169
170 struct edd_info {
171         __u8 device;
172         __u8 version;
173         __u16 interface_support;
174         __u16 legacy_max_cylinder;
175         __u8 legacy_max_head;
176         __u8 legacy_sectors_per_track;
177         struct edd_device_params params;
178 } __attribute__ ((packed));
179
180 struct edd {
181         unsigned int mbr_signature[EDD_MBR_SIG_MAX];
182         struct edd_info edd_info[EDDMAXNR];
183         unsigned char mbr_signature_nr;
184         unsigned char edd_info_nr;
185 };
186
187 #ifdef __KERNEL__
188 extern struct edd edd;
189 #endif /* __KERNEL__ */
190 #endif                          /*!__ASSEMBLY__ */
191
192 #endif                          /* _LINUX_EDD_H */