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[/] [or1k/] [trunk/] [uclinux/] [uC-libc/] [include/] [linux/] [xd.h] - Blame information for rev 1775

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1 199 simons 
#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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/* 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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} XD_INFO;
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#define HDIO_GETGEO             0x0301  /* get drive geometry */
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#define HDIO_GET_MULTCOUNT      0x0304  /* get limit of multiblock transfer */
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#define HDIO_SET_DMA            0x0326  /* change use-dma flag */
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#define HDIO_GET_DMA            0x030b  /* get use-dma flag */
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/* this structure is returned to the HDIO_GETGEO ioctl */
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typedef struct {
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        u_char heads;
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        u_char sectors;
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        u_short cylinders;
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        u_long start;
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} XD_GEOMETRY;
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/* this structure defines a ROM BIOS signature */
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typedef struct {
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        u_long offset;
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        const char *string;
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        void (*init_controller)(u_char *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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void xd_setup (char *command,int *integers);
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#ifndef MODULE
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void xd_manual_geo_init (char *command,int *integers);
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#endif /* MODULE */
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static u_char xd_detect (u_char *controller,u_char **address);
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static u_char xd_initdrives (void (*init_drive)(u_char drive));
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static void xd_geninit (struct gendisk *);
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static int xd_open (struct inode *inode,struct file *file);
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static void do_xd_request (void);
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static int xd_ioctl (struct inode *inode,struct file *file,unsigned int cmd,unsigned long arg);
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static void xd_release (struct inode *inode,struct file *file);
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static int xd_reread_partitions (kdev_t dev);
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static int xd_readwrite (u_char operation,u_char drive,char *buffer,u_int block,u_int count);
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static void xd_recalibrate (u_char drive);
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static void xd_interrupt_handler (int irq, void *dev_id, struct pt_regs *regs);
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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_wakeup (void);
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static void xd_watchdog (void);
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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 (u_char *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 (u_char *address);
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static void xd_wd_init_drive (u_char drive);
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static void xd_seagate_init_controller (u_char *address);
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static void xd_seagate_init_drive (u_char drive);
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static void xd_omti_init_controller (u_char *address);
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static void xd_omti_init_drive (u_char drive);
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static void xd_xebec_init_controller (u_char *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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