#ifndef _LINUX_XD_H#define _LINUX_XD_H/* * This file contains the definitions for the IO ports and errors etc. for XT hard disk controllers (at least the DTC 5150X). * * Author: Pat Mackinlay, smackinla@cc.curtin.edu.au * Date: 29/09/92 * * Revised: 01/01/93, ... * * Ref: DTC 5150X Controller Specification (thanks to Kevin Fowler, kevinf@agora.rain.com) * Also thanks to: Salvador Abreu, Dave Thaler, Risto Kankkunen and Wim Van Dorst. *//* XT hard disk controller registers */#define XD_DATA		(xd_iobase + 0x00)	/* data RW register */#define XD_RESET	(xd_iobase + 0x01)	/* reset WO register */#define XD_STATUS	(xd_iobase + 0x01)	/* status RO register */#define XD_SELECT	(xd_iobase + 0x02)	/* select WO register */#define XD_JUMPER	(xd_iobase + 0x02)	/* jumper RO register */#define XD_CONTROL	(xd_iobase + 0x03)	/* DMAE/INTE WO register */#define XD_RESERVED	(xd_iobase + 0x03)	/* reserved *//* XT hard disk controller commands (incomplete list) */#define CMD_TESTREADY	0x00	/* test drive ready */#define CMD_RECALIBRATE	0x01	/* recalibrate drive */#define CMD_SENSE	0x03	/* request sense */#define CMD_FORMATDRV	0x04	/* format drive */#define CMD_VERIFY	0x05	/* read verify */#define CMD_FORMATTRK	0x06	/* format track */#define CMD_FORMATBAD	0x07	/* format bad track */#define CMD_READ	0x08	/* read */#define CMD_WRITE	0x0A	/* write */#define CMD_SEEK	0x0B	/* seek *//* Controller specific commands */#define CMD_DTCSETPARAM	0x0C	/* set drive parameters (DTC 5150X only?) */#define CMD_DTCGETECC	0x0D	/* get ecc error length (DTC 5150X only?) */#define CMD_DTCREADBUF	0x0E	/* read sector buffer (DTC 5150X only?) */#define CMD_DTCWRITEBUF 0x0F	/* write sector buffer (DTC 5150X only?) */#define CMD_DTCREMAPTRK	0x11	/* assign alternate track (DTC 5150X only?) */#define CMD_DTCGETPARAM	0xFB	/* get drive parameters (DTC 5150X only?) */#define CMD_DTCSETSTEP	0xFC	/* set step rate (DTC 5150X only?) */#define CMD_DTCSETGEOM	0xFE	/* set geometry data (DTC 5150X only?) */#define CMD_DTCGETGEOM	0xFF	/* get geometry data (DTC 5150X only?) */#define CMD_ST11GETGEOM 0xF8	/* get geometry data (Seagate ST11R/M only?) */#define CMD_WDSETPARAM	0x0C	/* set drive parameters (WD 1004A27X only?) *//* Bits for command status byte */#define CSB_ERROR	0x02	/* error */#define CSB_LUN		0x20	/* logical Unit Number *//* XT hard disk controller status bits */#define STAT_READY	0x01	/* controller is ready */#define STAT_INPUT	0x02	/* data flowing from controller to host */#define STAT_COMMAND	0x04	/* controller in command phase */#define STAT_SELECT	0x08	/* controller is selected */#define STAT_REQUEST	0x10	/* controller requesting data */#define STAT_INTERRUPT	0x20	/* controller requesting interrupt *//* XT hard disk controller control bits */#define PIO_MODE	0x00	/* control bits to set for PIO */#define DMA_MODE	0x03	/* control bits to set for DMA & interrupt */#define XD_MAXDRIVES	2	/* maximum 2 drives */#define XD_TIMEOUT	100	/* 1 second timeout */#define XD_RETRIES	4	/* maximum 4 retries */#undef DEBUG			/* define for debugging output */#ifdef DEBUG	#define DEBUG_STARTUP	/* debug driver initialisation */	#define DEBUG_OVERRIDE	/* debug override geometry detection */	#define DEBUG_READWRITE	/* debug each read/write command */	#define DEBUG_OTHER	/* debug misc. interrupt/DMA stuff */	#define DEBUG_COMMAND	/* debug each controller command */#endif /* DEBUG *//* this structure defines the XT drives and their types */typedef struct {	u_char heads;	u_short cylinders;	u_char sectors;	u_char control;} XD_INFO;#define	HDIO_GETGEO	0x0301		/* get drive geometry *//* this structure is returned to the HDIO_GETGEO ioctl */typedef struct {	u_char heads;	u_char sectors;	u_short cylinders;	u_long start;} XD_GEOMETRY;/* this structure defines a ROM BIOS signature */typedef struct {	u_long offset;	char *string;	void (*init_controller)(u_char *address);	void (*init_drive)(u_char drive);	char *name;} XD_SIGNATURE;u_long xd_init (u_long mem_start,u_long mem_end);void xd_setup (char *command,int *integers);static u_char xd_detect (u_char *controller,u_char **address);static u_char xd_initdrives (void (*init_drive)(u_char drive));static void xd_geninit (void);static int xd_open (struct inode *inode,struct file *file);static void do_xd_request (void);static int xd_ioctl (struct inode *inode,struct file *file,unsigned int cmd,unsigned long arg);static void xd_release (struct inode *inode,struct file *file);static int xd_reread_partitions (int dev);static int xd_readwrite (u_char operation,u_char drive,char *buffer,u_int block,u_int count);static void xd_recalibrate (u_char drive);static void xd_interrupt_handler (int unused);static u_char xd_setup_dma (u_char opcode,u_char *buffer,u_int count);static u_char *xd_build (u_char *cmdblk,u_char command,u_char drive,u_char head,u_short cylinder,u_char sector,u_char count,u_char control);static inline u_char xd_waitport (u_short port,u_char flags,u_char mask,u_long timeout);static u_int xd_command (u_char *command,u_char mode,u_char *indata,u_char *outdata,u_char *sense,u_long timeout);/* card specific setup and geometry gathering code */static void xd_dtc_init_controller (u_char *address);static void xd_dtc_init_drive (u_char drive);static void xd_wd_init_controller (u_char *address);static void xd_wd_init_drive (u_char drive);static void xd_seagate_init_controller (u_char *address);static void xd_seagate_init_drive (u_char drive);static void xd_omti_init_controller (u_char *address);static void xd_omti_init_drive (u_char drive);static void xd_setparam (u_char command,u_char drive,u_char heads,u_short cylinders,u_short rwrite,u_short wprecomp,u_char ecc);static void xd_override_init_drive (u_char drive);#endif /* _LINUX_XD_H */