#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 #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