| 1 |
13 |
serginhofr |
#ifndef _LINUX_FDREG_H
|
| 2 |
|
|
#define _LINUX_FDREG_H
|
| 3 |
|
|
/*
|
| 4 |
|
|
* This file contains some defines for the floppy disk controller.
|
| 5 |
|
|
* Various sources. Mostly "IBM Microcomputers: A Programmers
|
| 6 |
|
|
* Handbook", Sanches and Canton.
|
| 7 |
|
|
*/
|
| 8 |
|
|
|
| 9 |
|
|
#ifdef FDPATCHES
|
| 10 |
|
|
#define FD_IOPORT fdc_state[fdc].address
|
| 11 |
|
|
#else
|
| 12 |
|
|
/* It would be a lot saner just to force fdc_state[fdc].address to always
|
| 13 |
|
|
be set ! FIXME */
|
| 14 |
|
|
#define FD_IOPORT 0x3f0
|
| 15 |
|
|
#endif
|
| 16 |
|
|
|
| 17 |
|
|
/* Fd controller regs. S&C, about page 340 */
|
| 18 |
|
|
#define FD_STATUS (4 + FD_IOPORT )
|
| 19 |
|
|
#define FD_DATA (5 + FD_IOPORT )
|
| 20 |
|
|
|
| 21 |
|
|
/* Digital Output Register */
|
| 22 |
|
|
#define FD_DOR (2 + FD_IOPORT )
|
| 23 |
|
|
|
| 24 |
|
|
/* Digital Input Register (read) */
|
| 25 |
|
|
#define FD_DIR (7 + FD_IOPORT )
|
| 26 |
|
|
|
| 27 |
|
|
/* Diskette Control Register (write)*/
|
| 28 |
|
|
#define FD_DCR (7 + FD_IOPORT )
|
| 29 |
|
|
|
| 30 |
|
|
/* Bits of main status register */
|
| 31 |
|
|
#define STATUS_BUSYMASK 0x0F /* drive busy mask */
|
| 32 |
|
|
#define STATUS_BUSY 0x10 /* FDC busy */
|
| 33 |
|
|
#define STATUS_DMA 0x20 /* 0- DMA mode */
|
| 34 |
|
|
#define STATUS_DIR 0x40 /* 0- cpu->fdc */
|
| 35 |
|
|
#define STATUS_READY 0x80 /* Data reg ready */
|
| 36 |
|
|
|
| 37 |
|
|
/* Bits of FD_ST0 */
|
| 38 |
|
|
#define ST0_DS 0x03 /* drive select mask */
|
| 39 |
|
|
#define ST0_HA 0x04 /* Head (Address) */
|
| 40 |
|
|
#define ST0_NR 0x08 /* Not Ready */
|
| 41 |
|
|
#define ST0_ECE 0x10 /* Equipment check error */
|
| 42 |
|
|
#define ST0_SE 0x20 /* Seek end */
|
| 43 |
|
|
#define ST0_INTR 0xC0 /* Interrupt code mask */
|
| 44 |
|
|
|
| 45 |
|
|
/* Bits of FD_ST1 */
|
| 46 |
|
|
#define ST1_MAM 0x01 /* Missing Address Mark */
|
| 47 |
|
|
#define ST1_WP 0x02 /* Write Protect */
|
| 48 |
|
|
#define ST1_ND 0x04 /* No Data - unreadable */
|
| 49 |
|
|
#define ST1_OR 0x10 /* OverRun */
|
| 50 |
|
|
#define ST1_CRC 0x20 /* CRC error in data or addr */
|
| 51 |
|
|
#define ST1_EOC 0x80 /* End Of Cylinder */
|
| 52 |
|
|
|
| 53 |
|
|
/* Bits of FD_ST2 */
|
| 54 |
|
|
#define ST2_MAM 0x01 /* Missing Address Mark (again) */
|
| 55 |
|
|
#define ST2_BC 0x02 /* Bad Cylinder */
|
| 56 |
|
|
#define ST2_SNS 0x04 /* Scan Not Satisfied */
|
| 57 |
|
|
#define ST2_SEH 0x08 /* Scan Equal Hit */
|
| 58 |
|
|
#define ST2_WC 0x10 /* Wrong Cylinder */
|
| 59 |
|
|
#define ST2_CRC 0x20 /* CRC error in data field */
|
| 60 |
|
|
#define ST2_CM 0x40 /* Control Mark = deleted */
|
| 61 |
|
|
|
| 62 |
|
|
/* Bits of FD_ST3 */
|
| 63 |
|
|
#define ST3_HA 0x04 /* Head (Address) */
|
| 64 |
|
|
#define ST3_DS 0x08 /* drive is double-sided */
|
| 65 |
|
|
#define ST3_TZ 0x10 /* Track Zero signal (1=track 0) */
|
| 66 |
|
|
#define ST3_RY 0x20 /* drive is ready */
|
| 67 |
|
|
#define ST3_WP 0x40 /* Write Protect */
|
| 68 |
|
|
#define ST3_FT 0x80 /* Drive Fault */
|
| 69 |
|
|
|
| 70 |
|
|
/* Values for FD_COMMAND */
|
| 71 |
|
|
#define FD_RECALIBRATE 0x07 /* move to track 0 */
|
| 72 |
|
|
#define FD_SEEK 0x0F /* seek track */
|
| 73 |
|
|
#define FD_READ 0xE6 /* read with MT, MFM, SKip deleted */
|
| 74 |
|
|
#define FD_WRITE 0xC5 /* write with MT, MFM */
|
| 75 |
|
|
#define FD_SENSEI 0x08 /* Sense Interrupt Status */
|
| 76 |
|
|
#define FD_SPECIFY 0x03 /* specify HUT etc */
|
| 77 |
|
|
#define FD_FORMAT 0x4D /* format one track */
|
| 78 |
|
|
#define FD_VERSION 0x10 /* get version code */
|
| 79 |
|
|
#define FD_CONFIGURE 0x13 /* configure FIFO operation */
|
| 80 |
|
|
#define FD_PERPENDICULAR 0x12 /* perpendicular r/w mode */
|
| 81 |
|
|
#define FD_GETSTATUS 0x04 /* read ST3 */
|
| 82 |
|
|
#define FD_DUMPREGS 0x0E /* dump the contents of the fdc regs */
|
| 83 |
|
|
#define FD_READID 0xEA /* prints the header of a sector */
|
| 84 |
|
|
#define FD_UNLOCK 0x14 /* Fifo config unlock */
|
| 85 |
|
|
#define FD_LOCK 0x94 /* Fifo config lock */
|
| 86 |
|
|
#define FD_RSEEK_OUT 0x8f /* seek out (i.e. to lower tracks) */
|
| 87 |
|
|
#define FD_RSEEK_IN 0xcf /* seek in (i.e. to higher tracks) */
|
| 88 |
|
|
|
| 89 |
|
|
/* the following commands are new in the 82078. They are not used in the
|
| 90 |
|
|
* floppy driver, except the first three. These commands may be useful for apps
|
| 91 |
|
|
* which use the FDRAWCMD interface. For doc, get the 82078 spec sheets at
|
| 92 |
|
|
* http://www.intel.com/design/archives/periphrl/docs/29046803.htm */
|
| 93 |
|
|
|
| 94 |
|
|
#define FD_PARTID 0x18 /* part id ("extended" version cmd) */
|
| 95 |
|
|
#define FD_SAVE 0x2e /* save fdc regs for later restore */
|
| 96 |
|
|
#define FD_DRIVESPEC 0x8e /* drive specification: Access to the
|
| 97 |
|
|
* 2 Mbps data transfer rate for tape
|
| 98 |
|
|
* drives */
|
| 99 |
|
|
|
| 100 |
|
|
#define FD_RESTORE 0x4e /* later restore */
|
| 101 |
|
|
#define FD_POWERDOWN 0x27 /* configure FDC's powersave features */
|
| 102 |
|
|
#define FD_FORMAT_N_WRITE 0xef /* format and write in one go. */
|
| 103 |
|
|
#define FD_OPTION 0x33 /* ISO format (which is a clean way to
|
| 104 |
|
|
* pack more sectors on a track) */
|
| 105 |
|
|
|
| 106 |
|
|
/* DMA commands */
|
| 107 |
|
|
#define DMA_READ 0x46
|
| 108 |
|
|
#define DMA_WRITE 0x4A
|
| 109 |
|
|
|
| 110 |
|
|
/* FDC version return types */
|
| 111 |
|
|
#define FDC_NONE 0x00
|
| 112 |
|
|
#define FDC_UNKNOWN 0x10 /* DO NOT USE THIS TYPE EXCEPT IF IDENTIFICATION
|
| 113 |
|
|
FAILS EARLY */
|
| 114 |
|
|
#define FDC_8272A 0x20 /* Intel 8272a, NEC 765 */
|
| 115 |
|
|
#define FDC_765ED 0x30 /* Non-Intel 1MB-compatible FDC, can't detect */
|
| 116 |
|
|
#define FDC_82072 0x40 /* Intel 82072; 8272a + FIFO + DUMPREGS */
|
| 117 |
|
|
#define FDC_82072A 0x45 /* 82072A (on Sparcs) */
|
| 118 |
|
|
#define FDC_82077_ORIG 0x51 /* Original version of 82077AA, sans LOCK */
|
| 119 |
|
|
#define FDC_82077 0x52 /* 82077AA-1 */
|
| 120 |
|
|
#define FDC_82078_UNKN 0x5f /* Unknown 82078 variant */
|
| 121 |
|
|
#define FDC_82078 0x60 /* 44pin 82078 or 64pin 82078SL */
|
| 122 |
|
|
#define FDC_82078_1 0x61 /* 82078-1 (2Mbps fdc) */
|
| 123 |
|
|
#define FDC_S82078B 0x62 /* S82078B (first seen on Adaptec AVA-2825 VLB
|
| 124 |
|
|
* SCSI/EIDE/Floppy controller) */
|
| 125 |
|
|
#define FDC_87306 0x63 /* National Semiconductor PC 87306 */
|
| 126 |
|
|
|
| 127 |
|
|
/*
|
| 128 |
|
|
* Beware: the fdc type list is roughly sorted by increasing features.
|
| 129 |
|
|
* Presence of features is tested by comparing the FDC version id with the
|
| 130 |
|
|
* "oldest" version that has the needed feature.
|
| 131 |
|
|
* If during FDC detection, an obscure test fails late in the sequence, don't
|
| 132 |
|
|
* assign FDC_UNKNOWN. Else the FDC will be treated as a dumb 8272a, or worse.
|
| 133 |
|
|
* This is especially true if the tests are unneeded.
|
| 134 |
|
|
*/
|
| 135 |
|
|
|
| 136 |
|
|
#define FD_RESET_DELAY 20
|
| 137 |
|
|
#endif
|
