1607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells/* 2607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * linux/include/linux/edd.h 3607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * Copyright (C) 2002, 2003, 2004 Dell Inc. 4607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * by Matt Domsch <Matt_Domsch@dell.com> 5607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * 6607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * structures and definitions for the int 13h, ax={41,48}h 7607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * BIOS Enhanced Disk Drive Services 8607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * This is based on the T13 group document D1572 Revision 0 (August 14 2002) 9607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * available at http://www.t13.org/docs2002/d1572r0.pdf. It is 10607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * very similar to D1484 Revision 3 http://www.t13.org/docs2002/d1484r3.pdf 11607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * 12607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * In a nutshell, arch/{i386,x86_64}/boot/setup.S populates a scratch 13607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * table in the boot_params that contains a list of BIOS-enumerated 14607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * boot devices. 15607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * In arch/{i386,x86_64}/kernel/setup.c, this information is 16607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * transferred into the edd structure, and in drivers/firmware/edd.c, that 17607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * information is used to identify BIOS boot disk. The code in setup.S 18607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * is very sensitive to the size of these structures. 19607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * 20607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * This program is free software; you can redistribute it and/or modify 21607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * it under the terms of the GNU General Public License v2.0 as published by 22607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * the Free Software Foundation 23607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * 24607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * This program is distributed in the hope that it will be useful, 25607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * but WITHOUT ANY WARRANTY; without even the implied warranty of 26607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 27607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * GNU General Public License for more details. 28607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * 29607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells */ 30607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#ifndef _UAPI_LINUX_EDD_H 31607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define _UAPI_LINUX_EDD_H 32607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells 33607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#include <linux/types.h> 34607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells 35607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define EDDNR 0x1e9 /* addr of number of edd_info structs at EDDBUF 36607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells in boot_params - treat this as 1 byte */ 37607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define EDDBUF 0xd00 /* addr of edd_info structs in boot_params */ 38607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define EDDMAXNR 6 /* number of edd_info structs starting at EDDBUF */ 39607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define EDDEXTSIZE 8 /* change these if you muck with the structures */ 40607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define EDDPARMSIZE 74 41607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define CHECKEXTENSIONSPRESENT 0x41 42607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define GETDEVICEPARAMETERS 0x48 43607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define LEGACYGETDEVICEPARAMETERS 0x08 44607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define EDDMAGIC1 0x55AA 45607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define EDDMAGIC2 0xAA55 46607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells 47607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells 48607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define READ_SECTORS 0x02 /* int13 AH=0x02 is READ_SECTORS command */ 49607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define EDD_MBR_SIG_OFFSET 0x1B8 /* offset of signature in the MBR */ 50607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define EDD_MBR_SIG_BUF 0x290 /* addr in boot params */ 51607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define EDD_MBR_SIG_MAX 16 /* max number of signatures to store */ 52607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define EDD_MBR_SIG_NR_BUF 0x1ea /* addr of number of MBR signtaures at EDD_MBR_SIG_BUF 53607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells in boot_params - treat this as 1 byte */ 54607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells 55607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#ifndef __ASSEMBLY__ 56607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells 57607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define EDD_EXT_FIXED_DISK_ACCESS (1 << 0) 58607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define EDD_EXT_DEVICE_LOCKING_AND_EJECTING (1 << 1) 59607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define EDD_EXT_ENHANCED_DISK_DRIVE_SUPPORT (1 << 2) 60607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define EDD_EXT_64BIT_EXTENSIONS (1 << 3) 61607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells 62607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define EDD_INFO_DMA_BOUNDARY_ERROR_TRANSPARENT (1 << 0) 63607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define EDD_INFO_GEOMETRY_VALID (1 << 1) 64607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define EDD_INFO_REMOVABLE (1 << 2) 65607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define EDD_INFO_WRITE_VERIFY (1 << 3) 66607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define EDD_INFO_MEDIA_CHANGE_NOTIFICATION (1 << 4) 67607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define EDD_INFO_LOCKABLE (1 << 5) 68607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define EDD_INFO_NO_MEDIA_PRESENT (1 << 6) 69607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define EDD_INFO_USE_INT13_FN50 (1 << 7) 70607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells 71607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howellsstruct edd_device_params { 72607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u16 length; 73607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u16 info_flags; 74607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u32 num_default_cylinders; 75607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u32 num_default_heads; 76607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u32 sectors_per_track; 77607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u64 number_of_sectors; 78607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u16 bytes_per_sector; 79607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u32 dpte_ptr; /* 0xFFFFFFFF for our purposes */ 80607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u16 key; /* = 0xBEDD */ 81607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u8 device_path_info_length; /* = 44 */ 82607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u8 reserved2; 83607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u16 reserved3; 84607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u8 host_bus_type[4]; 85607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u8 interface_type[8]; 86607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells union { 87607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells struct { 88607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u16 base_address; 89607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u16 reserved1; 90607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u32 reserved2; 91607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells } __attribute__ ((packed)) isa; 92607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells struct { 93607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u8 bus; 94607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u8 slot; 95607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u8 function; 96607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u8 channel; 97607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u32 reserved; 98607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells } __attribute__ ((packed)) pci; 99607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells /* pcix is same as pci */ 100607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells struct { 101607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u64 reserved; 102607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells } __attribute__ ((packed)) ibnd; 103607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells struct { 104607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u64 reserved; 105607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells } __attribute__ ((packed)) xprs; 106607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells struct { 107607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u64 reserved; 108607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells } __attribute__ ((packed)) htpt; 109607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells struct { 110607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u64 reserved; 111607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells } __attribute__ ((packed)) unknown; 112607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells } interface_path; 113607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells union { 114607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells struct { 115607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u8 device; 116607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u8 reserved1; 117607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u16 reserved2; 118607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u32 reserved3; 119607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u64 reserved4; 120607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells } __attribute__ ((packed)) ata; 121607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells struct { 122607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u8 device; 123607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u8 lun; 124607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u8 reserved1; 125607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u8 reserved2; 126607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u32 reserved3; 127607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u64 reserved4; 128607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells } __attribute__ ((packed)) atapi; 129607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells struct { 130607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u16 id; 131607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u64 lun; 132607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u16 reserved1; 133607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u32 reserved2; 134607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells } __attribute__ ((packed)) scsi; 135607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells struct { 136607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u64 serial_number; 137607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u64 reserved; 138607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells } __attribute__ ((packed)) usb; 139607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells struct { 140607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u64 eui; 141607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u64 reserved; 142607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells } __attribute__ ((packed)) i1394; 143607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells struct { 144607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u64 wwid; 145607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u64 lun; 146607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells } __attribute__ ((packed)) fibre; 147607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells struct { 148607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u64 identity_tag; 149607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u64 reserved; 150607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells } __attribute__ ((packed)) i2o; 151607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells struct { 152607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u32 array_number; 153607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u32 reserved1; 154607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u64 reserved2; 155607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells } __attribute__ ((packed)) raid; 156607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells struct { 157607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u8 device; 158607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u8 reserved1; 159607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u16 reserved2; 160607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u32 reserved3; 161607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u64 reserved4; 162607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells } __attribute__ ((packed)) sata; 163607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells struct { 164607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u64 reserved1; 165607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u64 reserved2; 166607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells } __attribute__ ((packed)) unknown; 167607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells } device_path; 168607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u8 reserved4; 169607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u8 checksum; 170607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells} __attribute__ ((packed)); 171607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells 172607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howellsstruct edd_info { 173607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u8 device; 174607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u8 version; 175607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u16 interface_support; 176607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u16 legacy_max_cylinder; 177607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u8 legacy_max_head; 178607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u8 legacy_sectors_per_track; 179607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells struct edd_device_params params; 180607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells} __attribute__ ((packed)); 181607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells 182607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howellsstruct edd { 183607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells unsigned int mbr_signature[EDD_MBR_SIG_MAX]; 184607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells struct edd_info edd_info[EDDMAXNR]; 185607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells unsigned char mbr_signature_nr; 186607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells unsigned char edd_info_nr; 187607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells}; 188607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells 189607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#endif /*!__ASSEMBLY__ */ 190607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells 191607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#endif /* _UAPI_LINUX_EDD_H */ 192