1#ifndef _LINUX_XD_H 2#define _LINUX_XD_H 3 4/* 5 * This file contains the definitions for the IO ports and errors etc. for XT hard disk controllers (at least the DTC 5150X). 6 * 7 * Author: Pat Mackinlay, pat@it.com.au 8 * Date: 29/09/92 9 * 10 * Revised: 01/01/93, ... 11 * 12 * Ref: DTC 5150X Controller Specification (thanks to Kevin Fowler, kevinf@agora.rain.com) 13 * Also thanks to: Salvador Abreu, Dave Thaler, Risto Kankkunen and Wim Van Dorst. 14 */ 15 16#include <linux/interrupt.h> 17 18/* XT hard disk controller registers */ 19#define XD_DATA (xd_iobase + 0x00) /* data RW register */ 20#define XD_RESET (xd_iobase + 0x01) /* reset WO register */ 21#define XD_STATUS (xd_iobase + 0x01) /* status RO register */ 22#define XD_SELECT (xd_iobase + 0x02) /* select WO register */ 23#define XD_JUMPER (xd_iobase + 0x02) /* jumper RO register */ 24#define XD_CONTROL (xd_iobase + 0x03) /* DMAE/INTE WO register */ 25#define XD_RESERVED (xd_iobase + 0x03) /* reserved */ 26 27/* XT hard disk controller commands (incomplete list) */ 28#define CMD_TESTREADY 0x00 /* test drive ready */ 29#define CMD_RECALIBRATE 0x01 /* recalibrate drive */ 30#define CMD_SENSE 0x03 /* request sense */ 31#define CMD_FORMATDRV 0x04 /* format drive */ 32#define CMD_VERIFY 0x05 /* read verify */ 33#define CMD_FORMATTRK 0x06 /* format track */ 34#define CMD_FORMATBAD 0x07 /* format bad track */ 35#define CMD_READ 0x08 /* read */ 36#define CMD_WRITE 0x0A /* write */ 37#define CMD_SEEK 0x0B /* seek */ 38 39/* Controller specific commands */ 40#define CMD_DTCSETPARAM 0x0C /* set drive parameters (DTC 5150X & CX only?) */ 41#define CMD_DTCGETECC 0x0D /* get ecc error length (DTC 5150X only?) */ 42#define CMD_DTCREADBUF 0x0E /* read sector buffer (DTC 5150X only?) */ 43#define CMD_DTCWRITEBUF 0x0F /* write sector buffer (DTC 5150X only?) */ 44#define CMD_DTCREMAPTRK 0x11 /* assign alternate track (DTC 5150X only?) */ 45#define CMD_DTCGETPARAM 0xFB /* get drive parameters (DTC 5150X only?) */ 46#define CMD_DTCSETSTEP 0xFC /* set step rate (DTC 5150X only?) */ 47#define CMD_DTCSETGEOM 0xFE /* set geometry data (DTC 5150X only?) */ 48#define CMD_DTCGETGEOM 0xFF /* get geometry data (DTC 5150X only?) */ 49#define CMD_ST11GETGEOM 0xF8 /* get geometry data (Seagate ST11R/M only?) */ 50#define CMD_WDSETPARAM 0x0C /* set drive parameters (WD 1004A27X only?) */ 51#define CMD_XBSETPARAM 0x0C /* set drive parameters (XEBEC only?) */ 52 53/* Bits for command status byte */ 54#define CSB_ERROR 0x02 /* error */ 55#define CSB_LUN 0x20 /* logical Unit Number */ 56 57/* XT hard disk controller status bits */ 58#define STAT_READY 0x01 /* controller is ready */ 59#define STAT_INPUT 0x02 /* data flowing from controller to host */ 60#define STAT_COMMAND 0x04 /* controller in command phase */ 61#define STAT_SELECT 0x08 /* controller is selected */ 62#define STAT_REQUEST 0x10 /* controller requesting data */ 63#define STAT_INTERRUPT 0x20 /* controller requesting interrupt */ 64 65/* XT hard disk controller control bits */ 66#define PIO_MODE 0x00 /* control bits to set for PIO */ 67#define DMA_MODE 0x03 /* control bits to set for DMA & interrupt */ 68 69#define XD_MAXDRIVES 2 /* maximum 2 drives */ 70#define XD_TIMEOUT HZ /* 1 second timeout */ 71#define XD_RETRIES 4 /* maximum 4 retries */ 72 73#undef DEBUG /* define for debugging output */ 74 75#ifdef DEBUG 76 #define DEBUG_STARTUP /* debug driver initialisation */ 77 #define DEBUG_OVERRIDE /* debug override geometry detection */ 78 #define DEBUG_READWRITE /* debug each read/write command */ 79 #define DEBUG_OTHER /* debug misc. interrupt/DMA stuff */ 80 #define DEBUG_COMMAND /* debug each controller command */ 81#endif /* DEBUG */ 82 83/* this structure defines the XT drives and their types */ 84typedef struct { 85 u_char heads; 86 u_short cylinders; 87 u_char sectors; 88 u_char control; 89 int unit; 90} XD_INFO; 91 92/* this structure defines a ROM BIOS signature */ 93typedef struct { 94 unsigned int offset; 95 const char *string; 96 void (*init_controller)(unsigned int address); 97 void (*init_drive)(u_char drive); 98 const char *name; 99} XD_SIGNATURE; 100 101#ifndef MODULE 102static int xd_manual_geo_init (char *command); 103#endif /* MODULE */ 104static u_char xd_detect (u_char *controller, unsigned int *address); 105static u_char xd_initdrives (void (*init_drive)(u_char drive)); 106 107static void do_xd_request (request_queue_t * q); 108static int xd_ioctl (struct inode *inode,struct file *file,unsigned int cmd,unsigned long arg); 109static int xd_readwrite (u_char operation,XD_INFO *disk,char *buffer,u_int block,u_int count); 110static void xd_recalibrate (u_char drive); 111 112static irqreturn_t xd_interrupt_handler(int irq, void *dev_id); 113static u_char xd_setup_dma (u_char opcode,u_char *buffer,u_int count); 114static 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); 115static void xd_watchdog (unsigned long unused); 116static inline u_char xd_waitport (u_short port,u_char flags,u_char mask,u_long timeout); 117static u_int xd_command (u_char *command,u_char mode,u_char *indata,u_char *outdata,u_char *sense,u_long timeout); 118 119/* card specific setup and geometry gathering code */ 120static void xd_dtc_init_controller (unsigned int address); 121static void xd_dtc5150cx_init_drive (u_char drive); 122static void xd_dtc_init_drive (u_char drive); 123static void xd_wd_init_controller (unsigned int address); 124static void xd_wd_init_drive (u_char drive); 125static void xd_seagate_init_controller (unsigned int address); 126static void xd_seagate_init_drive (u_char drive); 127static void xd_omti_init_controller (unsigned int address); 128static void xd_omti_init_drive (u_char drive); 129static void xd_xebec_init_controller (unsigned int address); 130static void xd_xebec_init_drive (u_char drive); 131static void xd_setparam (u_char command,u_char drive,u_char heads,u_short cylinders,u_short rwrite,u_short wprecomp,u_char ecc); 132static void xd_override_init_drive (u_char drive); 133 134#endif /* _LINUX_XD_H */ 135