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 */ 84 typedef 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 */ 93 typedef 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 102 static int xd_manual_geo_init (char *command); 103 #endif /* MODULE */ 104 static u_char xd_detect (u_char *controller, unsigned int *address); 105 static u_char xd_initdrives (void (*init_drive)(u_char drive)); 106 107 static void do_xd_request (struct request_queue * q); 108 static int xd_ioctl (struct block_device *bdev,fmode_t mode,unsigned int cmd,unsigned long arg); 109 static int xd_readwrite (u_char operation,XD_INFO *disk,char *buffer,u_int block,u_int count); 110 static void xd_recalibrate (u_char drive); 111 112 static irqreturn_t xd_interrupt_handler(int irq, void *dev_id); 113 static u_char xd_setup_dma (u_char opcode,u_char *buffer,u_int count); 114 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); 115 static void xd_watchdog (unsigned long unused); 116 static inline u_char xd_waitport (u_short port,u_char flags,u_char mask,u_long timeout); 117 static 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 */ 120 static void xd_dtc_init_controller (unsigned int address); 121 static void xd_dtc5150cx_init_drive (u_char drive); 122 static void xd_dtc_init_drive (u_char drive); 123 static void xd_wd_init_controller (unsigned int address); 124 static void xd_wd_init_drive (u_char drive); 125 static void xd_seagate_init_controller (unsigned int address); 126 static void xd_seagate_init_drive (u_char drive); 127 static void xd_omti_init_controller (unsigned int address); 128 static void xd_omti_init_drive (u_char drive); 129 static void xd_xebec_init_controller (unsigned int address); 130 static void xd_xebec_init_drive (u_char drive); 131 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); 132 static void xd_override_init_drive (u_char drive); 133 134 #endif /* _LINUX_XD_H */ 135