ide.h

1. 8623L平台

/*****************************************
 Copyright (c) 2003
 Sigma Designs, Inc. All Rights Reserved
 Proprietary and Confidential
 *****************************************/

/* This file is part of the MAMBO boot loader */

/*
 * ide.h
 *
 * IDE controller
 *
 * by Ho Lee 03/12/2003
 */

#ifndef __BOOTLOADER_IDE_H
#define __BOOTLOADER_IDE_H

// sector
#define SECTOR_SIZE			512
#define SECTOR_WORDS		(SECTOR_SIZE / 4)	/* number of 32bit words per sector */

#if 0

// ID structure
struct hd_driveid {
	unsigned short	config;		/* lots of obsolete bit flags */
	unsigned short	cyls;		/* Obsolete, "physical" cyls */
	unsigned short	reserved2;	/* reserved (word 2) */
	unsigned short	heads;		/* Obsolete, "physical" heads */
	unsigned short	track_bytes;	/* unformatted bytes per track */
	unsigned short	sector_bytes;	/* unformatted bytes per sector */
	unsigned short	sectors;	/* Obsolete, "physical" sectors per track */
	unsigned short	vendor0;	/* vendor unique */
	unsigned short	vendor1;	/* vendor unique */
	unsigned short	vendor2;	/* Retired vendor unique */
	unsigned char	serial_no[20];	/* 0 = not_specified */
	unsigned short	buf_type;	/* Retired */
	unsigned short	buf_size;	/* Retired, 512 byte increments
					 * 0 = not_specified
					 */
	unsigned short	ecc_bytes;	/* for r/w long cmds; 0 = not_specified */
	unsigned char	fw_rev[8];	/* 0 = not_specified */
	unsigned char	model[40];	/* 0 = not_specified */
	unsigned char	max_multsect;	/* 0=not_implemented */
	unsigned char	vendor3;	/* vendor unique */
	unsigned short	dword_io;	/* 0=not_implemented; 1=implemented */
	unsigned char	vendor4;	/* vendor unique */
	unsigned char	capability;	/* (upper byte of word 49)
					 *  3:	IORDYsup
					 *  2:	IORDYsw
					 *  1:	LBA
					 *  0:	DMA
					 */
	unsigned short	reserved50;	/* reserved (word 50) */
	unsigned char	vendor5;	/* Obsolete, vendor unique */
	unsigned char	tPIO;		/* Obsolete, 0=slow, 1=medium, 2=fast */
	unsigned char	vendor6;	/* Obsolete, vendor unique */
	unsigned char	tDMA;		/* Obsolete, 0=slow, 1=medium, 2=fast */
	unsigned short	field_valid;	/* (word 53)
					 *  2:	ultra_ok	word  88
					 *  1:	eide_ok		words 64-70
					 *  0:	cur_ok		words 54-58
					 */
	unsigned short	cur_cyls;	/* Obsolete, logical cylinders */
	unsigned short	cur_heads;	/* Obsolete, l heads */
	unsigned short	cur_sectors;	/* Obsolete, l sectors per track */
	unsigned short	cur_capacity0;	/* Obsolete, l total sectors on drive */
	unsigned short	cur_capacity1;	/* Obsolete, (2 words, misaligned int)     */
	unsigned char	multsect;	/* current multiple sector count */
	unsigned char	multsect_valid;	/* when (bit0==1) multsect is ok */
	unsigned int	lba_capacity;	/* Obsolete, total number of sectors */
	unsigned short	dma_1word;	/* Obsolete, single-word dma info */
	unsigned short	dma_mword;	/* multiple-word dma info */
	unsigned short  eide_pio_modes; /* bits 0:mode3 1:mode4 */
	unsigned short  eide_dma_min;	/* min mword dma cycle time (ns) */
	unsigned short  eide_dma_time;	/* recommended mword dma cycle time (ns) */
	unsigned short  eide_pio;       /* min cycle time (ns), no IORDY  */
	unsigned short  eide_pio_iordy; /* min cycle time (ns), with IORDY */
	unsigned short	words69_70[2];	/* reserved words 69-70
					 * future command overlap and queuing
					 */
	/* HDIO_GET_IDENTITY currently returns only words 0 through 70 */
	unsigned short	words71_74[4];	/* reserved words 71-74
					 * for IDENTIFY PACKET DEVICE command
					 */
	unsigned short  queue_depth;	/* (word 75)
					 * 15:5	reserved
					 *  4:0	Maximum queue depth -1
					 */
	unsigned short  words76_79[4];	/* reserved words 76-79 */
	unsigned short  major_rev_num;	/* (word 80) */
	unsigned short  minor_rev_num;	/* (word 81) */
	unsigned short  command_set_1;	/* (word 82) supported
					 * 15:	Obsolete
					 * 14:	NOP command
					 * 13:	READ_BUFFER
					 * 12:	WRITE_BUFFER
					 * 11:	Obsolete
					 * 10:	Host Protected Area
					 *  9:	DEVICE Reset
					 *  8:	SERVICE Interrupt
					 *  7:	Release Interrupt
					 *  6:	look-ahead
					 *  5:	write cache
					 *  4:	PACKET Command
					 *  3:	Power Management Feature Set
					 *  2:	Removable Feature Set
					 *  1:	Security Feature Set
					 *  0:	SMART Feature Set
					 */
	unsigned short  command_set_2;	/* (word 83)
					 * 15:	Shall be ZERO
					 * 14:	Shall be ONE
					 * 13:	FLUSH CACHE EXT
					 * 12:	FLUSH CACHE
					 * 11:	Device Configuration Overlay
					 * 10:	48-bit Address Feature Set
					 *  9:	Automatic Acoustic Management
					 *  8:	SET MAX security
					 *  7:	reserved 1407DT PARTIES
					 *  6:	SetF sub-command Power-Up
					 *  5:	Power-Up in Standby Feature Set
					 *  4:	Removable Media Notification
					 *  3:	APM Feature Set
					 *  2:	CFA Feature Set
					 *  1:	READ/WRITE DMA QUEUED
					 *  0:	Download MicroCode
					 */
	unsigned short  cfsse;		/* (word 84)
					 * cmd set-feature supported extensions
					 * 15:	Shall be ZERO
					 * 14:	Shall be ONE
					 * 13:3	reserved
					 *  2:	Media Serial Number Valid
					 *  1:	SMART selt-test supported
					 *  0:	SMART error logging
					 */
	unsigned short  cfs_enable_1;	/* (word 85)
					 * command set-feature enabled
					 * 15:	Obsolete
					 * 14:	NOP command
					 * 13:	READ_BUFFER
					 * 12:	WRITE_BUFFER
					 * 11:	Obsolete
					 * 10:	Host Protected Area
					 *  9:	DEVICE Reset
					 *  8:	SERVICE Interrupt
					 *  7:	Release Interrupt
					 *  6:	look-ahead
					 *  5:	write cache
					 *  4:	PACKET Command
					 *  3:	Power Management Feature Set
					 *  2:	Removable Feature Set
					 *  1:	Security Feature Set
					 *  0:	SMART Feature Set
					 */
	unsigned short  cfs_enable_2;	/* (word 86)
					 * command set-feature enabled
					 * 15:	Shall be ZERO
					 * 14:	Shall be ONE
					 * 13:	FLUSH CACHE EXT
					 * 12:	FLUSH CACHE
					 * 11:	Device Configuration Overlay
					 * 10:	48-bit Address Feature Set
					 *  9:	Automatic Acoustic Management
					 *  8:	SET MAX security
					 *  7:	reserved 1407DT PARTIES
					 *  6:	SetF sub-command Power-Up
					 *  5:	Power-Up in Standby Feature Set
					 *  4:	Removable Media Notification
					 *  3:	APM Feature Set
					 *  2:	CFA Feature Set
					 *  1:	READ/WRITE DMA QUEUED
					 *  0:	Download MicroCode
					 */
	unsigned short  csf_default;	/* (word 87)
					 * command set-feature default
					 * 15:	Shall be ZERO
					 * 14:	Shall be ONE
					 * 13:3	reserved
					 *  2:	Media Serial Number Valid
					 *  1:	SMART selt-test supported
					 *  0:	SMART error logging
					 */
	unsigned short  dma_ultra;	/* (word 88) */
	unsigned short	word89;		/* reserved (word 89) */
	unsigned short	word90;		/* reserved (word 90) */
	unsigned short	CurAPMvalues;	/* current APM values */
	unsigned short	word92;		/* reserved (word 92) */
	unsigned short	hw_config;	/* hardware config (word 93)
					 * 15:
					 * 14:
					 * 13:
					 * 12:
					 * 11:
					 * 10:
					 *  9:
					 *  8:
					 *  7:
					 *  6:
					 *  5:
					 *  4:
					 *  3:
					 *  2:
					 *  1:
					 *  0:
					 */
	unsigned short	acoustic;	/* (word 94)
					 * 15:8	Vendor's recommended value
					 *  7:0	current value
					 */
	unsigned short	words95_99[5];	/* reserved words 95-99 */
#if 0
	unsigned short	words100_103[4]	;/* reserved words 100-103 */
#else
	unsigned long long lba_capacity_2;/* 48-bit total number of sectors */
#endif
	unsigned short	words104_125[22];/* reserved words 104-125 */
	unsigned short	last_lun;	/* (word 126) */
	unsigned short	word127;	/* (word 127) Feature Set
					 * Removable Media Notification
					 * 15:2	reserved
					 *  1:0	00 = not supported
					 *	01 = supported
					 *	10 = reserved
					 *	11 = reserved
					 */
	unsigned short	dlf;		/* (word 128)
					 * device lock function
					 * 15:9	reserved
					 *  8	security level 1:max 0:high
					 *  7:6	reserved
					 *  5	enhanced erase
					 *  4	expire
					 *  3	frozen
					 *  2	locked
					 *  1	en/disabled
					 *  0	capability
					 */
	unsigned short  csfo;		/*  (word 129)
					 * current set features options
					 * 15:4	reserved
					 *  3:	auto reassign
					 *  2:	reverting
					 *  1:	read-look-ahead
					 *  0:	write cache
					 */
	unsigned short	words130_155[26];/* reserved vendor words 130-155 */
	unsigned short	word156;	/* reserved vendor word 156 */
	unsigned short	words157_159[3];/* reserved vendor words 157-159 */
	unsigned short	cfa_power;	/* (word 160) CFA Power Mode
					 * 15 word 160 supported
					 * 14 reserved
					 * 13
					 * 12
					 * 11:0
					 */
	unsigned short	words161_175[14];/* Reserved for CFA */
	unsigned short	words176_205[31];/* Current Media Serial Number */
	unsigned short	words206_254[48];/* reserved words 206-254 */
	unsigned short	integrity_word;	/* (word 255)
					 * 15:8 Checksum
					 *  7:0 Signature
					 */
};

#endif

//
// IDE information structure
//

#define MAX_CONTROLLER		6
#define MAX_DRIVES			(MAX_CONTROLLER * 2)
#define MAX_DRIVES_MASK		((1 << MAX_DRIVES) - 1)
#define IDE_CONTROLLER(x)	((x) >> 1)
#define IDE_DRIVE(x)		((x) & 0x01)
#define MAX_PARTITIONS		16

typedef union {
	unsigned all			: 8;	/* all of the bits together */
	struct {
		unsigned head		: 4;	/* always zeros here */
		unsigned unit		: 1;	/* drive select number, 0 or 1 */
		unsigned bit5		: 1;	/* always 1 */
		unsigned lba		: 1;	/* using LBA instead of CHS */
		unsigned bit7		: 1;	/* always 1 */
	} b;
} select_t;

typedef struct {
	int type;
	int cyls;
	int heads;
	int sectors;
	int lba;
	int nsectors;
	int size;
	struct hd_driveid id;
	select_t select;
	int cap_dma, cap_udma;
} ide_info_t;

extern ide_info_t g_ideinfo[MAX_DRIVES];

// IDE type
enum { IDE_NONE, IDE_ATA, IDE_ATAPI, IDE_ALL };

// function prototype
int ide_init(void);
int ide_found(int mask);
int ide_probe(int drivemask, int verbose);

// identify
ide_info_t *ide_identify(int drive);

// other commands
int ide_set_drive_speed(int drive, int speed);

// read & write
int ide_rw_sector(int read, int dma, int drive, int cyl, int head, int sector, unsigned char *buf);
int ide_rw_block(int read, int dma, int drive, int block, unsigned char *buf, int nsector);
int ide_rw_dma_block(int read, int drive, int block, unsigned char *buf, int nsector);

// partition table
int ide_read_partition(int drive, int *sectors, int showlist);
int ide_rw_block_partition(int read, int dma, int drive, int partition, int block, unsigned char *buf, int nsector);

// image I/O
enum { IMAGE_TYPE_NONE, IMAGE_TYPE_KERNEL, IMAGE_TYPE_ROMFS };

#define IMAGE_SIGNATURE			"Sigma Designs"
#define IMAGE_ID_KERNEL			"Kernel"
#define IMAGE_ID_ROMFS			"ROMFS"

typedef union {
	unsigned char data[SECTOR_SIZE];
	struct {
		unsigned char dummy[16];
		unsigned char signature[16];
		unsigned char id[8];
		unsigned short major, minor;
		unsigned int len;
	} u;
} image_infoblock_t;

int ide_probe_image(int drive, int *ppart, void *pinfo);
int ide_check_image(int drive, int part, void *pinfo);
int ide_read_image(int type, int drive, int part, unsigned char *buf);
int ide_write_image(int type, int drive, int part, unsigned char *buf, int len);

void ide_test(int drive, int part);

#endif