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Diffstat (limited to 'include/linux/xd.h')
| -rw-r--r-- | include/linux/xd.h | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/include/linux/xd.h b/include/linux/xd.h new file mode 100644 index 000000000..64ae79953 --- /dev/null +++ b/include/linux/xd.h @@ -0,0 +1,139 @@ +#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, pat@it.com.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 */ |