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 /* XT hard disk controller registers */ 17 #define XD_DATA (xd_iobase + 0x00) /* data RW register */ 18 #define XD_RESET (xd_iobase + 0x01) /* reset WO register */ 19 #define XD_STATUS (xd_iobase + 0x01) /* status RO register */ 20 #define XD_SELECT (xd_iobase + 0x02) /* select WO register */ 21 #define XD_JUMPER (xd_iobase + 0x02) /* jumper RO register */ 22 #define XD_CONTROL (xd_iobase + 0x03) /* DMAE/INTE WO register */ 23 #define XD_RESERVED (xd_iobase + 0x03) /* reserved */ 24 25 /* XT hard disk controller commands (incomplete list) */ 26 #define CMD_TESTREADY 0x00 /* test drive ready */ 27 #define CMD_RECALIBRATE 0x01 /* recalibrate drive */ 28 #define CMD_SENSE 0x03 /* request sense */ 29 #define CMD_FORMATDRV 0x04 /* format drive */ 30 #define CMD_VERIFY 0x05 /* read verify */ 31 #define CMD_FORMATTRK 0x06 /* format track */ 32 #define CMD_FORMATBAD 0x07 /* format bad track */ 33 #define CMD_READ 0x08 /* read */ 34 #define CMD_WRITE 0x0A /* write */ 35 #define CMD_SEEK 0x0B /* seek */ 36 37 /* Controller specific commands */ 38 #define CMD_DTCSETPARAM 0x0C /* set drive parameters (DTC 5150X & CX only?) */ 39 #define CMD_DTCGETECC 0x0D /* get ecc error length (DTC 5150X only?) */ 40 #define CMD_DTCREADBUF 0x0E /* read sector buffer (DTC 5150X only?) */ 41 #define CMD_DTCWRITEBUF 0x0F /* write sector buffer (DTC 5150X only?) */ 42 #define CMD_DTCREMAPTRK 0x11 /* assign alternate track (DTC 5150X only?) */ 43 #define CMD_DTCGETPARAM 0xFB /* get drive parameters (DTC 5150X only?) */ 44 #define CMD_DTCSETSTEP 0xFC /* set step rate (DTC 5150X only?) */ 45 #define CMD_DTCSETGEOM 0xFE /* set geometry data (DTC 5150X only?) */ 46 #define CMD_DTCGETGEOM 0xFF /* get geometry data (DTC 5150X only?) */ 47 #define CMD_ST11GETGEOM 0xF8 /* get geometry data (Seagate ST11R/M only?) */ 48 #define CMD_WDSETPARAM 0x0C /* set drive parameters (WD 1004A27X only?) */ 49 #define CMD_XBSETPARAM 0x0C /* set drive parameters (XEBEC only?) */ 50 51 /* Bits for command status byte */ 52 #define CSB_ERROR 0x02 /* error */ 53 #define CSB_LUN 0x20 /* logical Unit Number */ 54 55 /* XT hard disk controller status bits */ 56 #define STAT_READY 0x01 /* controller is ready */ 57 #define STAT_INPUT 0x02 /* data flowing from controller to host */ 58 #define STAT_COMMAND 0x04 /* controller in command phase */ 59 #define STAT_SELECT 0x08 /* controller is selected */ 60 #define STAT_REQUEST 0x10 /* controller requesting data */ 61 #define STAT_INTERRUPT 0x20 /* controller requesting interrupt */ 62 63 /* XT hard disk controller control bits */ 64 #define PIO_MODE 0x00 /* control bits to set for PIO */ 65 #define DMA_MODE 0x03 /* control bits to set for DMA & interrupt */ 66 67 #define XD_MAXDRIVES 2 /* maximum 2 drives */ 68 #define XD_TIMEOUT HZ /* 1 second timeout */ 69 #define XD_RETRIES 4 /* maximum 4 retries */ 70 71 #undef DEBUG /* define for debugging output */ 72 73 #ifdef DEBUG 74 #define DEBUG_STARTUP /* debug driver initialisation */ 75 #define DEBUG_OVERRIDE /* debug override geometry detection */ 76 #define DEBUG_READWRITE /* debug each read/write command */ 77 #define DEBUG_OTHER /* debug misc. interrupt/DMA stuff */ 78 #define DEBUG_COMMAND /* debug each controller command */ 79 #endif /* DEBUG */ 80 81 /* this structure defines the XT drives and their types */ 82 typedef struct { 83 u8 heads; 84 u16 cylinders; 85 u8 sectors; 86 u8 control; 87 } XD_INFO; 88 89 /* this structure is returned to the HDIO_GETGEO ioctl */ 90 typedef struct { 91 __u8 heads; 92 __u8 sectors; 93 __u8 cylinders; 94 __u32 start; 95 } XD_GEOMETRY; 96 97 /* this structure defines a ROM BIOS signature */ 98 typedef struct { 99 unsigned int offset; 100 const char *string; 101 void (*init_controller)(unsigned int address); 102 void (*init_drive)(u8 drive); 103 const char *name; 104 } XD_SIGNATURE; 105 106 #ifndef MODULE 107 static int xd_manual_geo_init (char *command); 108 #endif /* MODULE */ 109 static u8 xd_detect (u8 *controller, unsigned int *address); 110 static u8 xd_initdrives (void (*init_drive)(u8 drive)); 111 static void xd_geninit (void); 112 113 static int xd_open (struct inode *inode,struct file *file); 114 static void do_xd_request (request_queue_t * q); 115 static int xd_ioctl (struct inode *inode,struct file *file,unsigned int cmd,unsigned long arg); 116 static int xd_release (struct inode *inode,struct file *file); 117 static int xd_reread_partitions (kdev_t dev); 118 static int xd_readwrite (u8 operation,u8 drive,char *buffer,u_int block,u_int count); 119 static void xd_recalibrate (u8 drive); 120 121 static void xd_interrupt_handler (int irq, void *dev_id, struct pt_regs *regs); 122 static u8 xd_setup_dma (u8 opcode,u8 *buffer,u_int count); 123 static u8 *xd_build (u8 *cmdblk,u8 command,u8 drive,u8 head,u16 cylinder,u8 sector,u8 count,u8 control); 124 static void xd_watchdog (unsigned long unused); 125 static inline u8 xd_waitport (u16 port,u8 flags,u8 mask,unsigned long timeout); 126 static u_int xd_command (u8 *command,u8 mode,u8 *indata,u8 *outdata,u8 *sense,unsigned long timeout); 127 128 /* card specific setup and geometry gathering code */ 129 static void xd_dtc_init_controller (unsigned int address); 130 static void xd_dtc5150cx_init_drive (u8 drive); 131 static void xd_dtc_init_drive (u8 drive); 132 static void xd_wd_init_controller (unsigned int address); 133 static void xd_wd_init_drive (u8 drive); 134 static void xd_seagate_init_controller (unsigned int address); 135 static void xd_seagate_init_drive (u8 drive); 136 static void xd_omti_init_controller (unsigned int address); 137 static void xd_omti_init_drive (u8 drive); 138 static void xd_xebec_init_controller (unsigned int address); 139 static void xd_xebec_init_drive (u8 drive); 140 static void xd_setparam (u8 command,u8 drive,u8 heads,u16 cylinders,u16 rwrite,u16 wprecomp,u8 ecc); 141 static void xd_override_init_drive (u8 drive); 142 143 #endif /* _LINUX_XD_H */ 144