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/drivers/block/xd.h

https://bitbucket.org/evzijst/gittest
C Header | 135 lines | 97 code | 18 blank | 20 comment | 0 complexity | 8121db6347ee11764fa2e395e085fe68 MD5 | raw file
  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, pat@it.com.au
  8 * Date: 29/09/92
  9 *
 10 * Revised: 01/01/93, ...
 11 *
 12 * Ref: DTC 5150X Controller Specification (thanks to Kevin Fowler, kevinf@agora.rain.com)
 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 */
 84typedef 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 */
 93typedef 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
102static int xd_manual_geo_init (char *command);
103#endif /* MODULE */
104static u_char xd_detect (u_char *controller, unsigned int *address);
105static u_char xd_initdrives (void (*init_drive)(u_char drive));
106
107static void do_xd_request (request_queue_t * q);
108static int xd_ioctl (struct inode *inode,struct file *file,unsigned int cmd,unsigned long arg);
109static int xd_readwrite (u_char operation,XD_INFO *disk,char *buffer,u_int block,u_int count);
110static void xd_recalibrate (u_char drive);
111
112static irqreturn_t xd_interrupt_handler(int irq, void *dev_id,
113					struct pt_regs *regs);
114static u_char xd_setup_dma (u_char opcode,u_char *buffer,u_int count);
115static 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);
116static void xd_watchdog (unsigned long unused);
117static inline u_char xd_waitport (u_short port,u_char flags,u_char mask,u_long timeout);
118static 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 */
121static void xd_dtc_init_controller (unsigned int address);
122static void xd_dtc5150cx_init_drive (u_char drive);
123static void xd_dtc_init_drive (u_char drive);
124static void xd_wd_init_controller (unsigned int address);
125static void xd_wd_init_drive (u_char drive);
126static void xd_seagate_init_controller (unsigned int address);
127static void xd_seagate_init_drive (u_char drive);
128static void xd_omti_init_controller (unsigned int address);
129static void xd_omti_init_drive (u_char drive);
130static void xd_xebec_init_controller (unsigned int address);
131static void xd_xebec_init_drive (u_char drive);
132static void xd_setparam (u_char command,u_char drive,u_char heads,u_short cylinders,u_short rwrite,u_short wprecomp,u_char ecc);
133static void xd_override_init_drive (u_char drive);
134
135#endif /* _LINUX_XD_H */