http://www.ousob.com --- Legacy Redefined OuSob - File: /wwwroot/clipx/usr/include/linux/edd.h

/* * linux/include/linux/edd.h * Copyright (C) 2002, 2003, 2004 Dell Inc. * by Matt Domsch <Matt_Domsch@dell.com> * * structures and definitions for the int 13h, ax={41,48}h * BIOS Enhanced Disk Drive Services * This is based on the T13 group document D1572 Revision 0 (August 14 2002) * available at http://www.t13.org/docs2002/d1572r0.pdf. It is * very similar to D1484 Revision 3 http://www.t13.org/docs2002/d1484r3.pdf * * In a nutshell, arch/{i386,x86_64}/boot/setup.S populates a scratch * table in the boot_params that contains a list of BIOS-enumerated * boot devices. * In arch/{i386,x86_64}/kernel/setup.c, this information is * transferred into the edd structure, and in drivers/firmware/edd.c, that * information is used to identify BIOS boot disk. The code in setup.S * is very sensitive to the size of these structures. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License v2.0 as published by * the Free Software Foundation * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * */ #ifndef _LINUX_EDD_H #define _LINUX_EDD_H #define EDDNR 0x1e9 /* addr of number of edd_info structs at EDDBUF in boot_params - treat this as 1 byte */ #define EDDBUF 0xd00 /* addr of edd_info structs in boot_params */ #define EDDMAXNR 6 /* number of edd_info structs starting at EDDBUF */ #define EDDEXTSIZE 8 /* change these if you muck with the structures */ #define EDDPARMSIZE 74 #define CHECKEXTENSIONSPRESENT 0x41 #define GETDEVICEPARAMETERS 0x48 #define LEGACYGETDEVICEPARAMETERS 0x08 #define EDDMAGIC1 0x55AA #define EDDMAGIC2 0xAA55 #define READ_SECTORS 0x02 /* int13 AH=0x02 is READ_SECTORS command */ #define EDD_MBR_SIG_OFFSET 0x1B8 /* offset of signature in the MBR */ #define EDD_MBR_SIG_BUF 0x290 /* addr in boot params */ #define EDD_MBR_SIG_MAX 16 /* max number of signatures to store */ #define EDD_MBR_SIG_NR_BUF 0x1ea /* addr of number of MBR signtaures at EDD_MBR_SIG_BUF in boot_params - treat this as 1 byte */ #define EDD_CL_EQUALS 0x3d646465 /* "edd=" */ #define EDD_CL_OFF 0x666f /* "of" for off */ #define EDD_CL_SKIP 0x6b73 /* "sk" for skipmbr */ #ifndef __ASSEMBLY__ #define EDD_EXT_FIXED_DISK_ACCESS (1 << 0) #define EDD_EXT_DEVICE_LOCKING_AND_EJECTING (1 << 1) #define EDD_EXT_ENHANCED_DISK_DRIVE_SUPPORT (1 << 2) #define EDD_EXT_64BIT_EXTENSIONS (1 << 3) #define EDD_INFO_DMA_BOUNDARY_ERROR_TRANSPARENT (1 << 0) #define EDD_INFO_GEOMETRY_VALID (1 << 1) #define EDD_INFO_REMOVABLE (1 << 2) #define EDD_INFO_WRITE_VERIFY (1 << 3) #define EDD_INFO_MEDIA_CHANGE_NOTIFICATION (1 << 4) #define EDD_INFO_LOCKABLE (1 << 5) #define EDD_INFO_NO_MEDIA_PRESENT (1 << 6) #define EDD_INFO_USE_INT13_FN50 (1 << 7) struct edd_device_params { u16 length; u16 info_flags; u32 num_default_cylinders; u32 num_default_heads; u32 sectors_per_track; u64 number_of_sectors; u16 bytes_per_sector; u32 dpte_ptr; /* 0xFFFFFFFF for our purposes */ u16 key; /* = 0xBEDD */ u8 device_path_info_length; /* = 44 */ u8 reserved2; u16 reserved3; u8 host_bus_type[4]; u8 interface_type[8]; union { struct { u16 base_address; u16 reserved1; u32 reserved2; } __attribute__ ((packed)) isa; struct { u8 bus; u8 slot; u8 function; u8 channel; u32 reserved; } __attribute__ ((packed)) pci; /* pcix is same as pci */ struct { u64 reserved; } __attribute__ ((packed)) ibnd; struct { u64 reserved; } __attribute__ ((packed)) xprs; struct { u64 reserved; } __attribute__ ((packed)) htpt; struct { u64 reserved; } __attribute__ ((packed)) unknown; } interface_path; union { struct { u8 device; u8 reserved1; u16 reserved2; u32 reserved3; u64 reserved4; } __attribute__ ((packed)) ata; struct { u8 device; u8 lun; u8 reserved1; u8 reserved2; u32 reserved3; u64 reserved4; } __attribute__ ((packed)) atapi; struct { u16 id; u64 lun; u16 reserved1; u32 reserved2; } __attribute__ ((packed)) scsi; struct { u64 serial_number; u64 reserved; } __attribute__ ((packed)) usb; struct { u64 eui; u64 reserved; } __attribute__ ((packed)) i1394; struct { u64 wwid; u64 lun; } __attribute__ ((packed)) fibre; struct { u64 identity_tag; u64 reserved; } __attribute__ ((packed)) i2o; struct { u32 array_number; u32 reserved1; u64 reserved2; } __attribute__ ((packed)) raid; struct { u8 device; u8 reserved1; u16 reserved2; u32 reserved3; u64 reserved4; } __attribute__ ((packed)) sata; struct { u64 reserved1; u64 reserved2; } __attribute__ ((packed)) unknown; } device_path; u8 reserved4; u8 checksum; } __attribute__ ((packed)); struct edd_info { u8 device; u8 version; u16 interface_support; u16 legacy_max_cylinder; u8 legacy_max_head; u8 legacy_sectors_per_track; struct edd_device_params params; } __attribute__ ((packed)); struct edd { unsigned int mbr_signature[EDD_MBR_SIG_MAX]; struct edd_info edd_info[EDDMAXNR]; unsigned char mbr_signature_nr; unsigned char edd_info_nr; }; extern struct edd edd; #endif /*!__ASSEMBLY__ */ #endif /* _LINUX_EDD_H */