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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 | #ifndef _FDC_IO_H #define _FDC_IO_H /* * Copyright (C) 1993-1995 Bas Laarhoven. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; see the file COPYING. If not, write to the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. * $Source: /home/bas/distr/ftape-2.03b/RCS/fdc-io.h,v $ $Author: bas $ * $Revision: 1.38 $ $Date: 1995/05/10 16:09:36 $ $State: Beta $ * * This file contains the low level functions * that communicate with the floppy disk controller, * for the QIC-40/80 floppy-tape driver for Linux. */ #include <linux/fdreg.h> #define FDC_SK_BIT (0x20) #define FDC_MT_BIT (0x80) #define FDC_READ (FD_READ & ~(FDC_SK_BIT | FDC_MT_BIT)) #define FDC_WRITE (FD_WRITE & ~FDC_MT_BIT) #define FDC_READ_DELETED (0x4c) #define FDC_WRITE_DELETED (0x49) #define FDC_READID (0x4a) #define FDC_SENSED (0x04) #define FDC_SENSEI (FD_SENSEI) #define FDC_RECAL (FD_RECALIBRATE) #define FDC_SEEK (FD_SEEK) #define FDC_SPECIFY (FD_SPECIFY) #define FDC_RECALIBR (FD_RECALIBRATE) #define FDC_VERSION (FD_VERSION) #define FDC_PERPEND (FD_PERPENDICULAR) #define FDC_DUMPREGS (FD_DUMPREGS) #define FDC_LOCK (FD_LOCK) #define FDC_UNLOCK (FD_UNLOCK) #define FDC_CONFIGURE (FD_CONFIGURE) #define FDC_DRIVE_SPEC (0x8e) /* i82078 has this (any others?) */ #define FDC_PARTID (0x18) /* i82078 has this */ #define FDC_SAVE (0x2e) /* i82078 has this (any others?) */ #define FDC_RESTORE (0x4e) /* i82078 has this (any others?) */ #define FDC_STATUS_MASK (STATUS_BUSY | STATUS_DMA | STATUS_DIR | STATUS_READY) #define FDC_DATA_READY (STATUS_READY) #define FDC_DATA_OUTPUT (STATUS_DIR) #define FDC_DATA_READY_MASK (STATUS_READY | STATUS_DIR) #define FDC_DATA_OUT_READY (STATUS_READY | STATUS_DIR) #define FDC_DATA_IN_READY (STATUS_READY) #define FDC_BUSY (STATUS_BUSY) #define FDC_CLK48_BIT (0x80) #define FDC_SEL3V_BIT (0x40) #define ST0_INT_MASK (ST0_INTR) #define FDC_INT_NORMAL (ST0_INTR & 0x00) #define FDC_INT_ABNORMAL (ST0_INTR & 0x40) #define FDC_INT_INVALID (ST0_INTR & 0x80) #define FDC_INT_READYCH (ST0_INTR & 0xC0) #define ST0_SEEK_END (ST0_SE) #define ST3_TRACK_0 (ST3_TZ) #define FDC_RESET_NOT (0x04) #define FDC_DMA_MODE (0x08) #define FDC_MOTOR_0 (0x10) #define FDC_MOTOR_1 (0x20) typedef struct { void (**hook) (void); /* our wedge into the isr */ enum { no_fdc, i8272, i82077, i82077AA, fc10, i82078, i82078_1 } type; /* FDC type */ unsigned char irq; /* FDC irq nr */ unsigned char dma; /* FDC dma channel nr */ unsigned short sra; /* Status register A (PS/2 only) */ unsigned short srb; /* Status register B (PS/2 only) */ unsigned short dor; /* Digital output register */ unsigned short tdr; /* Tape Drive Register (82077SL-1 & 82078 only) */ unsigned short msr; /* Main Status Register */ unsigned short dsr; /* Datarate Select Register (8207x only) */ unsigned short fifo; /* Data register / Fifo on 8207x */ unsigned short dir; /* Digital Input Register */ unsigned short ccr; /* Configuration Control Register */ unsigned short dor2; /* Alternate dor on MACH-2 controller, also used with FC-10, meaning unknown */ } fdc_config_info; typedef enum { fdc_data_rate_250 = 2, fdc_data_rate_500 = 0, fdc_data_rate_1000 = 3, fdc_data_rate_2000 = 1, /* i82078-1: remember to use Data Rate Table #2 */ } fdc_data_rate_type; typedef enum { waiting = 0, reading, writing, done, error, } buffer_state_enum; typedef volatile enum { fdc_idle = 0, fdc_reading_data = FDC_READ, fdc_seeking = FDC_SEEK, fdc_writing_data = FDC_WRITE, fdc_reading_id = FDC_READID, fdc_recalibrating = FDC_RECAL, } fdc_mode_enum; /* * fdc-io.c defined public variables */ extern fdc_mode_enum fdc_mode; extern volatile enum runner_status_enum runner_status; extern int old_vfo; extern volatile int head; extern volatile int tail; extern int fdc_setup_error; /* outdated ??? */ extern struct wait_queue *wait_intr; extern volatile unsigned int next_segment; /* next segment for read ahead */ extern int ftape_unit; /* fdc unit specified at ftape_open() */ extern int ftape_motor; /* fdc motor line state */ extern int current_cylinder; /* track nr the FDC thinks we're on */ extern volatile byte fdc_head; /* FDC head */ extern volatile byte fdc_cyl; /* FDC track */ extern volatile byte fdc_sect; /* FDC sector */ extern fdc_config_info fdc; /* FDC hardware configuration */ /* * fdc-io.c defined public functions */ extern void fdc_catch_stray_interrupts(unsigned count); extern int fdc_ready_wait(int timeout); extern int fdc_write(byte data); extern int fdc_read(byte * data); extern int fdc_command(byte * cmd_data, int cmd_len); extern int fdc_result(byte * res_data, int res_len); extern int fdc_issue_command(byte * out_data, int out_count, \ byte * in_data, int in_count); extern void fdc_isr(void); extern int fdc_interrupt_wait(int time); extern void fdt_sleep(unsigned int time); extern int fdc_specify(int head_unload_time, int seek_rate, int head_load_time, int non_dma); extern int fdc_set_seek_rate(int seek_rate); extern int fdc_seek(int track); extern int fdc_sense_drive_status(int *st3); extern void fdc_motor(int motor); extern void fdc_reset(void); extern int fdc_recalibrate(void); extern void fdc_disable(void); extern int fdc_wait_calibrate(void); extern int fdc_sense_interrupt_status(int *st0, int *current_cylinder); extern void fdc_save_drive_specs(void); extern void fdc_restore_drive_specs(void); extern void fdc_set_data_rate(int rate); extern int fdc_release_irq_and_dma(void); extern int fdc_init(void); extern int fdc_uninit(void); extern void fdc_set_write_precomp(int precomp); #endif |