[linux.git] / drivers / block / xd.h

#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, [email protected]
 * Date: 29/09/92
 *
 * Revised: 01/01/93, ...
 *
 * Ref: DTC 5150X Controller Specification (thanks to Kevin Fowler, [email protected])
 * Also thanks to: Salvador Abreu, Dave Thaler, Risto Kankkunen and Wim Van Dorst.
 */

#include <linux/interrupt.h>

/* 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 & CX 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?) */
#define CMD_XBSETPARAM	0x0C	/* set drive parameters (XEBEC 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	HZ	/* 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;
	int unit;
} XD_INFO;

/* this structure defines a ROM BIOS signature */
typedef struct {
	unsigned int offset;
	const char *string;
	void (*init_controller)(unsigned int address);
	void (*init_drive)(u_char drive);
	const char *name;
} XD_SIGNATURE;

#ifndef MODULE
static int xd_manual_geo_init (char *command);
#endif /* MODULE */
static u_char xd_detect (u_char *controller, unsigned int *address);
static u_char xd_initdrives (void (*init_drive)(u_char drive));

static void do_xd_request (request_queue_t * q);
static int xd_ioctl (struct inode *inode,struct file *file,unsigned int cmd,unsigned long arg);
static int xd_readwrite (u_char operation,XD_INFO *disk,char *buffer,u_int block,u_int count);
static void xd_recalibrate (u_char drive);

static irqreturn_t xd_interrupt_handler(int irq, void *dev_id,
					struct pt_regs *regs);
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 void xd_watchdog (unsigned long unused);
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 (unsigned int address);
static void xd_dtc5150cx_init_drive (u_char drive);
static void xd_dtc_init_drive (u_char drive);
static void xd_wd_init_controller (unsigned int address);
static void xd_wd_init_drive (u_char drive);
static void xd_seagate_init_controller (unsigned int address);
static void xd_seagate_init_drive (u_char drive);
static void xd_omti_init_controller (unsigned int address);
static void xd_omti_init_drive (u_char drive);
static void xd_xebec_init_controller (unsigned int address);
static void xd_xebec_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 */
Commit	Line	Data
1da177e4 LT	1	#ifndef _LINUX_XD_H
	2	#define _LINUX_XD_H
	3
	4	/*
	5	* This file contains the definitions for the IO ports and errors etc. for XT hard disk controllers (at least the DTC 5150X).
	6	*
	7	* Author: Pat Mackinlay, [email protected]
	8	* Date: 29/09/92
	9	*
	10	* Revised: 01/01/93, ...
	11	*
	12	* Ref: DTC 5150X Controller Specification (thanks to Kevin Fowler, [email protected])
	13	* Also thanks to: Salvador Abreu, Dave Thaler, Risto Kankkunen and Wim Van Dorst.
	14	*/
	15
	16	#include <linux/interrupt.h>
	17
	18	/* XT hard disk controller registers */
	19	#define XD_DATA (xd_iobase + 0x00) /* data RW register */
	20	#define XD_RESET (xd_iobase + 0x01) /* reset WO register */
	21	#define XD_STATUS (xd_iobase + 0x01) /* status RO register */
	22	#define XD_SELECT (xd_iobase + 0x02) /* select WO register */
	23	#define XD_JUMPER (xd_iobase + 0x02) /* jumper RO register */
	24	#define XD_CONTROL (xd_iobase + 0x03) /* DMAE/INTE WO register */
	25	#define XD_RESERVED (xd_iobase + 0x03) /* reserved */
	26
	27	/* XT hard disk controller commands (incomplete list) */
	28	#define CMD_TESTREADY 0x00 /* test drive ready */
	29	#define CMD_RECALIBRATE 0x01 /* recalibrate drive */
	30	#define CMD_SENSE 0x03 /* request sense */
	31	#define CMD_FORMATDRV 0x04 /* format drive */
	32	#define CMD_VERIFY 0x05 /* read verify */
	33	#define CMD_FORMATTRK 0x06 /* format track */
	34	#define CMD_FORMATBAD 0x07 /* format bad track */
	35	#define CMD_READ 0x08 /* read */
	36	#define CMD_WRITE 0x0A /* write */
	37	#define CMD_SEEK 0x0B /* seek */
	38
	39	/* Controller specific commands */
	40	#define CMD_DTCSETPARAM 0x0C /* set drive parameters (DTC 5150X & CX only?) */
	41	#define CMD_DTCGETECC 0x0D /* get ecc error length (DTC 5150X only?) */
	42	#define CMD_DTCREADBUF 0x0E /* read sector buffer (DTC 5150X only?) */
	43	#define CMD_DTCWRITEBUF 0x0F /* write sector buffer (DTC 5150X only?) */
	44	#define CMD_DTCREMAPTRK 0x11 /* assign alternate track (DTC 5150X only?) */
	45	#define CMD_DTCGETPARAM 0xFB /* get drive parameters (DTC 5150X only?) */
	46	#define CMD_DTCSETSTEP 0xFC /* set step rate (DTC 5150X only?) */
	47	#define CMD_DTCSETGEOM 0xFE /* set geometry data (DTC 5150X only?) */
	48	#define CMD_DTCGETGEOM 0xFF /* get geometry data (DTC 5150X only?) */
	49	#define CMD_ST11GETGEOM 0xF8 /* get geometry data (Seagate ST11R/M only?) */
	50	#define CMD_WDSETPARAM 0x0C /* set drive parameters (WD 1004A27X only?) */
	51	#define CMD_XBSETPARAM 0x0C /* set drive parameters (XEBEC only?) */
	52
	53	/* Bits for command status byte */
	54	#define CSB_ERROR 0x02 /* error */
	55	#define CSB_LUN 0x20 /* logical Unit Number */
	56
	57	/* XT hard disk controller status bits */
	58	#define STAT_READY 0x01 /* controller is ready */
	59	#define STAT_INPUT 0x02 /* data flowing from controller to host */
	60	#define STAT_COMMAND 0x04 /* controller in command phase */
	61	#define STAT_SELECT 0x08 /* controller is selected */
	62	#define STAT_REQUEST 0x10 /* controller requesting data */
	63	#define STAT_INTERRUPT 0x20 /* controller requesting interrupt */
	64
65	/* XT hard disk controller control bits */
66	#define PIO_MODE 0x00 /* control bits to set for PIO */
67	#define DMA_MODE 0x03 /* control bits to set for DMA & interrupt */
68
69	#define XD_MAXDRIVES 2 /* maximum 2 drives */
70	#define XD_TIMEOUT HZ /* 1 second timeout */
71	#define XD_RETRIES 4 /* maximum 4 retries */
72
73	#undef DEBUG /* define for debugging output */
74
75	#ifdef DEBUG
76	#define DEBUG_STARTUP /* debug driver initialisation */
77	#define DEBUG_OVERRIDE /* debug override geometry detection */
78	#define DEBUG_READWRITE /* debug each read/write command */
79	#define DEBUG_OTHER /* debug misc. interrupt/DMA stuff */
80	#define DEBUG_COMMAND /* debug each controller command */
81	#endif /* DEBUG */
82
83	/* this structure defines the XT drives and their types */
84	typedef struct {
85	u_char heads;
86	u_short cylinders;
87	u_char sectors;
88	u_char control;
89	int unit;
90	} XD_INFO;
91
92	/* this structure defines a ROM BIOS signature */
93	typedef struct {
94	unsigned int offset;
95	const char *string;
96	void (*init_controller)(unsigned int address);
97	void (*init_drive)(u_char drive);
98	const char *name;
99	} XD_SIGNATURE;
100
101	#ifndef MODULE
102	static int xd_manual_geo_init (char *command);
103	#endif /* MODULE */
104	static u_char xd_detect (u_char controller, unsigned int address);
105	static u_char xd_initdrives (void (*init_drive)(u_char drive));
106
107	static void do_xd_request (request_queue_t * q);
108	static int xd_ioctl (struct inode inode,struct file file,unsigned int cmd,unsigned long arg);
109	static int xd_readwrite (u_char operation,XD_INFO disk,char buffer,u_int block,u_int count);
110	static void xd_recalibrate (u_char drive);
111
112	static irqreturn_t xd_interrupt_handler(int irq, void *dev_id,
113	struct pt_regs *regs);
114	static u_char xd_setup_dma (u_char opcode,u_char *buffer,u_int count);
115	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);
116	static void xd_watchdog (unsigned long unused);
117	static inline u_char xd_waitport (u_short port,u_char flags,u_char mask,u_long timeout);
118	static u_int xd_command (u_char command,u_char mode,u_char indata,u_char outdata,u_char sense,u_long timeout);
119
120	/* card specific setup and geometry gathering code */
121	static void xd_dtc_init_controller (unsigned int address);
122	static void xd_dtc5150cx_init_drive (u_char drive);
123	static void xd_dtc_init_drive (u_char drive);
124	static void xd_wd_init_controller (unsigned int address);
125	static void xd_wd_init_drive (u_char drive);
126	static void xd_seagate_init_controller (unsigned int address);
127	static void xd_seagate_init_drive (u_char drive);
128	static void xd_omti_init_controller (unsigned int address);
129	static void xd_omti_init_drive (u_char drive);
130	static void xd_xebec_init_controller (unsigned int address);
131	static void xd_xebec_init_drive (u_char drive);
132	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);
133	static void xd_override_init_drive (u_char drive);
134
135	#endif /* _LINUX_XD_H */