| #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, smackinla@cc.curtin.edu.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 */ |
| #undef XD_OVERRIDE /* define to override auto-detection */ |
| |
| #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; |
| u_char *string; |
| void (*init_controller)(u_char *address); |
| void (*init_drive)(u_char drive); |
| u_char *name; |
| } XD_SIGNATURE; |
| |
| extern void resetup_one_dev (struct gendisk *dev,unsigned int drive); |
| |
| u_long xd_init(u_long mem_start,u_long mem_end); |
| 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,u_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 */ |
| #ifndef XD_OVERRIDE |
| static void xd_dtc5150x_init_controller (u_char *address); |
| static void xd_dtc5150x_init_drive (u_char drive); |
| static void xd_wd1004a27x_init_controller (u_char *address); |
| static void xd_wd1004a27x_init_drive (u_char drive); |
| static void xd_seagate11_init_controller (u_char *address); |
| static void xd_seagate11_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); |
| #endif XD_OVERRIDE |
| |
| static void xd_override_init_controller (u_char *address); |
| static void xd_override_init_drive (u_char drive); |
| |
| #endif _LINUX_XD_H |