/usr/powerpc64-linux-gnu/include/linux/fdreg.h is in linux-libc-dev-ppc64-cross 4.15.0-18.19cross1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
#ifndef _LINUX_FDREG_H
#define _LINUX_FDREG_H
/*
* This file contains some defines for the floppy disk controller.
* Various sources. Mostly "IBM Microcomputers: A Programmers
* Handbook", Sanches and Canton.
*/
#ifdef FDPATCHES
#define FD_IOPORT fdc_state[fdc].address
#else
/* It would be a lot saner just to force fdc_state[fdc].address to always
be set ! FIXME */
#define FD_IOPORT 0x3f0
#endif
/* Fd controller regs. S&C, about page 340 */
#define FD_STATUS (4 + FD_IOPORT )
#define FD_DATA (5 + FD_IOPORT )
/* Digital Output Register */
#define FD_DOR (2 + FD_IOPORT )
/* Digital Input Register (read) */
#define FD_DIR (7 + FD_IOPORT )
/* Diskette Control Register (write)*/
#define FD_DCR (7 + FD_IOPORT )
/* Bits of main status register */
#define STATUS_BUSYMASK 0x0F /* drive busy mask */
#define STATUS_BUSY 0x10 /* FDC busy */
#define STATUS_DMA 0x20 /* 0- DMA mode */
#define STATUS_DIR 0x40 /* 0- cpu->fdc */
#define STATUS_READY 0x80 /* Data reg ready */
/* Bits of FD_ST0 */
#define ST0_DS 0x03 /* drive select mask */
#define ST0_HA 0x04 /* Head (Address) */
#define ST0_NR 0x08 /* Not Ready */
#define ST0_ECE 0x10 /* Equipment check error */
#define ST0_SE 0x20 /* Seek end */
#define ST0_INTR 0xC0 /* Interrupt code mask */
/* Bits of FD_ST1 */
#define ST1_MAM 0x01 /* Missing Address Mark */
#define ST1_WP 0x02 /* Write Protect */
#define ST1_ND 0x04 /* No Data - unreadable */
#define ST1_OR 0x10 /* OverRun */
#define ST1_CRC 0x20 /* CRC error in data or addr */
#define ST1_EOC 0x80 /* End Of Cylinder */
/* Bits of FD_ST2 */
#define ST2_MAM 0x01 /* Missing Address Mark (again) */
#define ST2_BC 0x02 /* Bad Cylinder */
#define ST2_SNS 0x04 /* Scan Not Satisfied */
#define ST2_SEH 0x08 /* Scan Equal Hit */
#define ST2_WC 0x10 /* Wrong Cylinder */
#define ST2_CRC 0x20 /* CRC error in data field */
#define ST2_CM 0x40 /* Control Mark = deleted */
/* Bits of FD_ST3 */
#define ST3_HA 0x04 /* Head (Address) */
#define ST3_DS 0x08 /* drive is double-sided */
#define ST3_TZ 0x10 /* Track Zero signal (1=track 0) */
#define ST3_RY 0x20 /* drive is ready */
#define ST3_WP 0x40 /* Write Protect */
#define ST3_FT 0x80 /* Drive Fault */
/* Values for FD_COMMAND */
#define FD_RECALIBRATE 0x07 /* move to track 0 */
#define FD_SEEK 0x0F /* seek track */
#define FD_READ 0xE6 /* read with MT, MFM, SKip deleted */
#define FD_WRITE 0xC5 /* write with MT, MFM */
#define FD_SENSEI 0x08 /* Sense Interrupt Status */
#define FD_SPECIFY 0x03 /* specify HUT etc */
#define FD_FORMAT 0x4D /* format one track */
#define FD_VERSION 0x10 /* get version code */
#define FD_CONFIGURE 0x13 /* configure FIFO operation */
#define FD_PERPENDICULAR 0x12 /* perpendicular r/w mode */
#define FD_GETSTATUS 0x04 /* read ST3 */
#define FD_DUMPREGS 0x0E /* dump the contents of the fdc regs */
#define FD_READID 0xEA /* prints the header of a sector */
#define FD_UNLOCK 0x14 /* Fifo config unlock */
#define FD_LOCK 0x94 /* Fifo config lock */
#define FD_RSEEK_OUT 0x8f /* seek out (i.e. to lower tracks) */
#define FD_RSEEK_IN 0xcf /* seek in (i.e. to higher tracks) */
/* the following commands are new in the 82078. They are not used in the
* floppy driver, except the first three. These commands may be useful for apps
* which use the FDRAWCMD interface. For doc, get the 82078 spec sheets at
* http://www.intel.com/design/archives/periphrl/docs/29046803.htm */
#define FD_PARTID 0x18 /* part id ("extended" version cmd) */
#define FD_SAVE 0x2e /* save fdc regs for later restore */
#define FD_DRIVESPEC 0x8e /* drive specification: Access to the
* 2 Mbps data transfer rate for tape
* drives */
#define FD_RESTORE 0x4e /* later restore */
#define FD_POWERDOWN 0x27 /* configure FDC's powersave features */
#define FD_FORMAT_N_WRITE 0xef /* format and write in one go. */
#define FD_OPTION 0x33 /* ISO format (which is a clean way to
* pack more sectors on a track) */
/* DMA commands */
#define DMA_READ 0x46
#define DMA_WRITE 0x4A
/* FDC version return types */
#define FDC_NONE 0x00
#define FDC_UNKNOWN 0x10 /* DO NOT USE THIS TYPE EXCEPT IF IDENTIFICATION
FAILS EARLY */
#define FDC_8272A 0x20 /* Intel 8272a, NEC 765 */
#define FDC_765ED 0x30 /* Non-Intel 1MB-compatible FDC, can't detect */
#define FDC_82072 0x40 /* Intel 82072; 8272a + FIFO + DUMPREGS */
#define FDC_82072A 0x45 /* 82072A (on Sparcs) */
#define FDC_82077_ORIG 0x51 /* Original version of 82077AA, sans LOCK */
#define FDC_82077 0x52 /* 82077AA-1 */
#define FDC_82078_UNKN 0x5f /* Unknown 82078 variant */
#define FDC_82078 0x60 /* 44pin 82078 or 64pin 82078SL */
#define FDC_82078_1 0x61 /* 82078-1 (2Mbps fdc) */
#define FDC_S82078B 0x62 /* S82078B (first seen on Adaptec AVA-2825 VLB
* SCSI/EIDE/Floppy controller) */
#define FDC_87306 0x63 /* National Semiconductor PC 87306 */
/*
* Beware: the fdc type list is roughly sorted by increasing features.
* Presence of features is tested by comparing the FDC version id with the
* "oldest" version that has the needed feature.
* If during FDC detection, an obscure test fails late in the sequence, don't
* assign FDC_UNKNOWN. Else the FDC will be treated as a dumb 8272a, or worse.
* This is especially true if the tests are unneeded.
*/
#define FD_RESET_DELAY 20
#endif
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