#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. */ #include <linux/interrupt.h> /* 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 & CX 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?) */ #define CMD_XBSETPARAM 0x0C /* set drive parameters (XEBEC 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 HZ /* 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; int unit; } XD_INFO; /* this structure defines a ROM BIOS signature */ typedef struct { unsigned int offset; const char *string; void (*init_controller)(unsigned int address); void (*init_drive)(u_char drive); const char *name; } XD_SIGNATURE; #ifndef MODULE static int xd_manual_geo_init (char *command); #endif /* MODULE */ static u_char xd_detect (u_char *controller, unsigned int *address); static u_char xd_initdrives (void (*init_drive)(u_char drive)); static void do_xd_request (struct request_queue * q); static int xd_ioctl (struct block_device *bdev,fmode_t mode,unsigned int cmd,unsigned long arg); static int xd_readwrite (u_char operation,XD_INFO *disk,char *buffer,u_int block,u_int count); static void xd_recalibrate (u_char drive); static irqreturn_t xd_interrupt_handler(int irq, void *dev_id); 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 void xd_watchdog (unsigned long unused); 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 (unsigned int address); static void xd_dtc5150cx_init_drive (u_char drive); static void xd_dtc_init_drive (u_char drive); static void xd_wd_init_controller (unsigned int address); static void xd_wd_init_drive (u_char drive); static void xd_seagate_init_controller (unsigned int address); static void xd_seagate_init_drive (u_char drive); static void xd_omti_init_controller (unsigned int address); static void xd_omti_init_drive (u_char drive); static void xd_xebec_init_controller (unsigned int address); static void xd_xebec_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 */