[GitHub/mt8127/android_kernel_alcatel_ttab.git] / 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  */

#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;
};

#ifdef __KERNEL__
extern struct edd edd;
#endif /* __KERNEL__ */
#endif				/*!__ASSEMBLY__ */

#endif				/* _LINUX_EDD_H */
Commit	Line	Data
1da177e4 LT	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 */
f9ba7053	35	#define EDDBUF 0xd00 /* addr of edd_info structs in boot_params */
1da177e4 LT	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 */
1da177e4 LT	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 {
ee8e7cfe RR	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];
1da177e4 LT	84	union {
1da177e4 LT	85	struct {
ee8e7cfe RR	86	__u16 base_address;
	87	__u16 reserved1;
	88	__u32 reserved2;
1da177e4 LT	89	} __attribute__ ((packed)) isa;
1da177e4 LT	90	struct {
ee8e7cfe RR	91	__u8 bus;
	92	__u8 slot;
	93	__u8 function;
	94	__u8 channel;
	95	__u32 reserved;
1da177e4 LT	96	} __attribute__ ((packed)) pci;
	97	/* pcix is same as pci */
	98	struct {
ee8e7cfe	99	__u64 reserved;
1da177e4 LT	100	} __attribute__ ((packed)) ibnd;
1da177e4 LT	101	struct {
ee8e7cfe	102	__u64 reserved;
1da177e4 LT	103	} __attribute__ ((packed)) xprs;
1da177e4 LT	104	struct {
ee8e7cfe	105	__u64 reserved;
1da177e4 LT	106	} __attribute__ ((packed)) htpt;
1da177e4 LT	107	struct {
ee8e7cfe	108	__u64 reserved;
1da177e4 LT	109	} __attribute__ ((packed)) unknown;
	110	} interface_path;
	111	union {
	112	struct {
ee8e7cfe RR	113	__u8 device;
	114	__u8 reserved1;
	115	__u16 reserved2;
	116	__u32 reserved3;
	117	__u64 reserved4;
1da177e4 LT	118	} __attribute__ ((packed)) ata;
1da177e4 LT	119	struct {
ee8e7cfe RR	120	__u8 device;
	121	__u8 lun;
	122	__u8 reserved1;
	123	__u8 reserved2;
	124	__u32 reserved3;
	125	__u64 reserved4;
1da177e4 LT	126	} __attribute__ ((packed)) atapi;
1da177e4 LT	127	struct {
ee8e7cfe RR	128	__u16 id;
	129	__u64 lun;
	130	__u16 reserved1;
	131	__u32 reserved2;
1da177e4 LT	132	} __attribute__ ((packed)) scsi;
1da177e4 LT	133	struct {
ee8e7cfe RR	134	__u64 serial_number;
ee8e7cfe RR	135	__u64 reserved;
1da177e4 LT	136	} __attribute__ ((packed)) usb;
1da177e4 LT	137	struct {
ee8e7cfe RR	138	__u64 eui;
ee8e7cfe RR	139	__u64 reserved;
1da177e4 LT	140	} __attribute__ ((packed)) i1394;
1da177e4 LT	141	struct {
ee8e7cfe RR	142	__u64 wwid;
ee8e7cfe RR	143	__u64 lun;
1da177e4 LT	144	} __attribute__ ((packed)) fibre;
1da177e4 LT	145	struct {
ee8e7cfe RR	146	__u64 identity_tag;
ee8e7cfe RR	147	__u64 reserved;
1da177e4 LT	148	} __attribute__ ((packed)) i2o;
1da177e4 LT	149	struct {
ee8e7cfe RR	150	__u32 array_number;
	151	__u32 reserved1;
	152	__u64 reserved2;
1da177e4 LT	153	} __attribute__ ((packed)) raid;
1da177e4 LT	154	struct {
ee8e7cfe RR	155	__u8 device;
	156	__u8 reserved1;
	157	__u16 reserved2;
	158	__u32 reserved3;
	159	__u64 reserved4;
1da177e4 LT	160	} __attribute__ ((packed)) sata;
1da177e4 LT	161	struct {
ee8e7cfe RR	162	__u64 reserved1;
ee8e7cfe RR	163	__u64 reserved2;
1da177e4 LT	164	} __attribute__ ((packed)) unknown;
1da177e4 LT	165	} device_path;
ee8e7cfe RR	166	__u8 reserved4;
ee8e7cfe RR	167	__u8 checksum;
1da177e4 LT	168	} __attribute__ ((packed));
	169
	170	struct edd_info {
ee8e7cfe RR	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;
1da177e4 LT	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
ee8e7cfe	187	#ifdef __KERNEL__
1da177e4	188	extern struct edd edd;
ee8e7cfe	189	#endif /* __KERNEL__ */
1da177e4 LT	190	#endif /!__ASSEMBLY__ /
	191
	192	#endif /* _LINUX_EDD_H */