135 lines
5.7 KiB
C
135 lines
5.7 KiB
C
#ifndef _LINUX_XD_H
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#define _LINUX_XD_H
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/*
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* This file contains the definitions for the IO ports and errors etc. for XT hard disk controllers (at least the DTC 5150X).
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*
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* Author: Pat Mackinlay, pat@it.com.au
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* Date: 29/09/92
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*
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* Revised: 01/01/93, ...
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*
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* Ref: DTC 5150X Controller Specification (thanks to Kevin Fowler, kevinf@agora.rain.com)
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* Also thanks to: Salvador Abreu, Dave Thaler, Risto Kankkunen and Wim Van Dorst.
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*/
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#include <linux/interrupt.h>
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/* XT hard disk controller registers */
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#define XD_DATA (xd_iobase + 0x00) /* data RW register */
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#define XD_RESET (xd_iobase + 0x01) /* reset WO register */
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#define XD_STATUS (xd_iobase + 0x01) /* status RO register */
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#define XD_SELECT (xd_iobase + 0x02) /* select WO register */
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#define XD_JUMPER (xd_iobase + 0x02) /* jumper RO register */
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#define XD_CONTROL (xd_iobase + 0x03) /* DMAE/INTE WO register */
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#define XD_RESERVED (xd_iobase + 0x03) /* reserved */
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/* XT hard disk controller commands (incomplete list) */
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#define CMD_TESTREADY 0x00 /* test drive ready */
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#define CMD_RECALIBRATE 0x01 /* recalibrate drive */
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#define CMD_SENSE 0x03 /* request sense */
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#define CMD_FORMATDRV 0x04 /* format drive */
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#define CMD_VERIFY 0x05 /* read verify */
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#define CMD_FORMATTRK 0x06 /* format track */
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#define CMD_FORMATBAD 0x07 /* format bad track */
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#define CMD_READ 0x08 /* read */
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#define CMD_WRITE 0x0A /* write */
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#define CMD_SEEK 0x0B /* seek */
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/* Controller specific commands */
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#define CMD_DTCSETPARAM 0x0C /* set drive parameters (DTC 5150X & CX only?) */
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#define CMD_DTCGETECC 0x0D /* get ecc error length (DTC 5150X only?) */
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#define CMD_DTCREADBUF 0x0E /* read sector buffer (DTC 5150X only?) */
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#define CMD_DTCWRITEBUF 0x0F /* write sector buffer (DTC 5150X only?) */
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#define CMD_DTCREMAPTRK 0x11 /* assign alternate track (DTC 5150X only?) */
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#define CMD_DTCGETPARAM 0xFB /* get drive parameters (DTC 5150X only?) */
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#define CMD_DTCSETSTEP 0xFC /* set step rate (DTC 5150X only?) */
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#define CMD_DTCSETGEOM 0xFE /* set geometry data (DTC 5150X only?) */
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#define CMD_DTCGETGEOM 0xFF /* get geometry data (DTC 5150X only?) */
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#define CMD_ST11GETGEOM 0xF8 /* get geometry data (Seagate ST11R/M only?) */
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#define CMD_WDSETPARAM 0x0C /* set drive parameters (WD 1004A27X only?) */
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#define CMD_XBSETPARAM 0x0C /* set drive parameters (XEBEC only?) */
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/* Bits for command status byte */
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#define CSB_ERROR 0x02 /* error */
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#define CSB_LUN 0x20 /* logical Unit Number */
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/* XT hard disk controller status bits */
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#define STAT_READY 0x01 /* controller is ready */
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#define STAT_INPUT 0x02 /* data flowing from controller to host */
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#define STAT_COMMAND 0x04 /* controller in command phase */
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#define STAT_SELECT 0x08 /* controller is selected */
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#define STAT_REQUEST 0x10 /* controller requesting data */
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#define STAT_INTERRUPT 0x20 /* controller requesting interrupt */
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/* XT hard disk controller control bits */
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#define PIO_MODE 0x00 /* control bits to set for PIO */
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#define DMA_MODE 0x03 /* control bits to set for DMA & interrupt */
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#define XD_MAXDRIVES 2 /* maximum 2 drives */
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#define XD_TIMEOUT HZ /* 1 second timeout */
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#define XD_RETRIES 4 /* maximum 4 retries */
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#undef DEBUG /* define for debugging output */
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#ifdef DEBUG
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#define DEBUG_STARTUP /* debug driver initialisation */
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#define DEBUG_OVERRIDE /* debug override geometry detection */
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#define DEBUG_READWRITE /* debug each read/write command */
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#define DEBUG_OTHER /* debug misc. interrupt/DMA stuff */
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#define DEBUG_COMMAND /* debug each controller command */
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#endif /* DEBUG */
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/* this structure defines the XT drives and their types */
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typedef struct {
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u_char heads;
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u_short cylinders;
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u_char sectors;
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u_char control;
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int unit;
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} XD_INFO;
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/* this structure defines a ROM BIOS signature */
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typedef struct {
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unsigned int offset;
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const char *string;
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void (*init_controller)(unsigned int address);
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void (*init_drive)(u_char drive);
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const char *name;
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} XD_SIGNATURE;
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#ifndef MODULE
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static int xd_manual_geo_init (char *command);
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#endif /* MODULE */
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static u_char xd_detect (u_char *controller, unsigned int *address);
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static u_char xd_initdrives (void (*init_drive)(u_char drive));
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static void do_xd_request (struct request_queue * q);
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static int xd_ioctl (struct block_device *bdev,fmode_t mode,unsigned int cmd,unsigned long arg);
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static int xd_readwrite (u_char operation,XD_INFO *disk,char *buffer,u_int block,u_int count);
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static void xd_recalibrate (u_char drive);
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static irqreturn_t xd_interrupt_handler(int irq, void *dev_id);
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static u_char xd_setup_dma (u_char opcode,u_char *buffer,u_int count);
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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);
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static void xd_watchdog (unsigned long unused);
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static inline u_char xd_waitport (u_short port,u_char flags,u_char mask,u_long timeout);
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static u_int xd_command (u_char *command,u_char mode,u_char *indata,u_char *outdata,u_char *sense,u_long timeout);
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/* card specific setup and geometry gathering code */
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static void xd_dtc_init_controller (unsigned int address);
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static void xd_dtc5150cx_init_drive (u_char drive);
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static void xd_dtc_init_drive (u_char drive);
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static void xd_wd_init_controller (unsigned int address);
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static void xd_wd_init_drive (u_char drive);
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static void xd_seagate_init_controller (unsigned int address);
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static void xd_seagate_init_drive (u_char drive);
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static void xd_omti_init_controller (unsigned int address);
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static void xd_omti_init_drive (u_char drive);
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static void xd_xebec_init_controller (unsigned int address);
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static void xd_xebec_init_drive (u_char drive);
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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);
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static void xd_override_init_drive (u_char drive);
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#endif /* _LINUX_XD_H */
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