^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * linux/amiga/amiflop.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 1993 Greg Harp
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Portions of this driver are based on code contributed by Brad Pepers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * revised 28.5.95 by Joerg Dorchain
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * - now no bugs(?) any more for both HD & DD
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * - added support for 40 Track 5.25" drives, 80-track hopefully behaves
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * like 3.5" dd (no way to test - are there any 5.25" drives out there
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * that work on an A4000?)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * - wrote formatting routine (maybe dirty, but works)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * june/july 1995 added ms-dos support by Joerg Dorchain
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * (portions based on messydos.device and various contributors)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * - currently only 9 and 18 sector disks
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * - fixed a bug with the internal trackbuffer when using multiple
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * disks the same time
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) * - made formatting a bit safer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) * - added command line and machine based default for "silent" df0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) * december 1995 adapted for 1.2.13pl4 by Joerg Dorchain
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) * - works but I think it's inefficient. (look in redo_fd_request)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) * But the changes were very efficient. (only three and a half lines)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) * january 1996 added special ioctl for tracking down read/write problems
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) * - usage ioctl(d, RAW_TRACK, ptr); the raw track buffer (MFM-encoded data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) * is copied to area. (area should be large enough since no checking is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) * done - 30K is currently sufficient). return the actual size of the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) * trackbuffer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) * - replaced udelays() by a timer (CIAA timer B) for the waits
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) * needed for the disk mechanic.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) * february 1996 fixed error recovery and multiple disk access
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) * - both got broken the first time I tampered with the driver :-(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) * - still not safe, but better than before
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) * revised Marts 3rd, 1996 by Jes Sorensen for use in the 1.3.28 kernel.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) * - Minor changes to accept the kdev_t.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) * - Replaced some more udelays with ms_delays. Udelay is just a loop,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) * and so the delay will be different depending on the given
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) * processor :-(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) * - The driver could use a major cleanup because of the new
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) * major/minor handling that came with kdev_t. It seems to work for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) * the time being, but I can't guarantee that it will stay like
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) * that when we start using 16 (24?) bit minors.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) * restructured jan 1997 by Joerg Dorchain
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) * - Fixed Bug accessing multiple disks
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) * - some code cleanup
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) * - added trackbuffer for each drive to speed things up
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) * - fixed some race conditions (who finds the next may send it to me ;-)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) #include <linux/fd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) #include <linux/hdreg.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) #include <linux/mutex.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) #include <linux/fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) #include <linux/blk-mq.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) #include <linux/elevator.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) #include <asm/setup.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) #include <asm/amigahw.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) #include <asm/amigaints.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) #include <asm/irq.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) #undef DEBUG /* print _LOTS_ of infos */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) #define RAW_IOCTL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) #ifdef RAW_IOCTL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) #define IOCTL_RAW_TRACK 0x5254524B /* 'RTRK' */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) * Defines
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) * CIAAPRA bits (read only)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) #define DSKRDY (0x1<<5) /* disk ready when low */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) #define DSKTRACK0 (0x1<<4) /* head at track zero when low */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) #define DSKPROT (0x1<<3) /* disk protected when low */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) #define DSKCHANGE (0x1<<2) /* low when disk removed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) * CIAAPRB bits (read/write)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) #define DSKMOTOR (0x1<<7) /* motor on when low */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) #define DSKSEL3 (0x1<<6) /* select drive 3 when low */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) #define DSKSEL2 (0x1<<5) /* select drive 2 when low */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) #define DSKSEL1 (0x1<<4) /* select drive 1 when low */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) #define DSKSEL0 (0x1<<3) /* select drive 0 when low */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) #define DSKSIDE (0x1<<2) /* side selection: 0 = upper, 1 = lower */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) #define DSKDIREC (0x1<<1) /* step direction: 0=in, 1=out (to trk 0) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) #define DSKSTEP (0x1) /* pulse low to step head 1 track */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) * DSKBYTR bits (read only)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) #define DSKBYT (1<<15) /* register contains valid byte when set */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) #define DMAON (1<<14) /* disk DMA enabled */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) #define DISKWRITE (1<<13) /* disk write bit in DSKLEN enabled */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) #define WORDEQUAL (1<<12) /* DSKSYNC register match when true */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) /* bits 7-0 are data */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) * ADKCON/ADKCONR bits
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) #ifndef SETCLR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) #define ADK_SETCLR (1<<15) /* control bit */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) #define ADK_PRECOMP1 (1<<14) /* precompensation selection */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) #define ADK_PRECOMP0 (1<<13) /* 00=none, 01=140ns, 10=280ns, 11=500ns */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) #define ADK_MFMPREC (1<<12) /* 0=GCR precomp., 1=MFM precomp. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) #define ADK_WORDSYNC (1<<10) /* enable DSKSYNC auto DMA */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) #define ADK_MSBSYNC (1<<9) /* when 1, enable sync on MSbit (for GCR) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) #define ADK_FAST (1<<8) /* bit cell: 0=2us (GCR), 1=1us (MFM) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) * DSKLEN bits
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) #define DSKLEN_DMAEN (1<<15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) #define DSKLEN_WRITE (1<<14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) * INTENA/INTREQ bits
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) #define DSKINDEX (0x1<<4) /* DSKINDEX bit */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) * Misc
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) #define MFM_SYNC 0x4489 /* standard MFM sync value */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) /* Values for FD_COMMAND */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) #define FD_RECALIBRATE 0x07 /* move to track 0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) #define FD_SEEK 0x0F /* seek track */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) #define FD_READ 0xE6 /* read with MT, MFM, SKip deleted */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) #define FD_WRITE 0xC5 /* write with MT, MFM */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) #define FD_SENSEI 0x08 /* Sense Interrupt Status */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) #define FD_SPECIFY 0x03 /* specify HUT etc */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) #define FD_FORMAT 0x4D /* format one track */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) #define FD_VERSION 0x10 /* get version code */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) #define FD_CONFIGURE 0x13 /* configure FIFO operation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) #define FD_PERPENDICULAR 0x12 /* perpendicular r/w mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) #define FD_MAX_UNITS 4 /* Max. Number of drives */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) #define FLOPPY_MAX_SECTORS 22 /* Max. Number of sectors per track */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) struct fd_data_type {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) char *name; /* description of data type */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) int sects; /* sectors per track */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) int (*read_fkt)(int); /* read whole track */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) void (*write_fkt)(int); /* write whole track */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) struct fd_drive_type {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) unsigned long code; /* code returned from drive */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) char *name; /* description of drive */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) unsigned int tracks; /* number of tracks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) unsigned int heads; /* number of heads */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) unsigned int read_size; /* raw read size for one track */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) unsigned int write_size; /* raw write size for one track */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) unsigned int sect_mult; /* sectors and gap multiplier (HD = 2) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) unsigned int precomp1; /* start track for precomp 1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) unsigned int precomp2; /* start track for precomp 2 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) unsigned int step_delay; /* time (in ms) for delay after step */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) unsigned int settle_time; /* time to settle after dir change */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) unsigned int side_time; /* time needed to change sides */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) struct amiga_floppy_struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) struct fd_drive_type *type; /* type of floppy for this unit */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) struct fd_data_type *dtype; /* type of floppy for this unit */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) int track; /* current track (-1 == unknown) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) unsigned char *trackbuf; /* current track (kmaloc()'d */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) int blocks; /* total # blocks on disk */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) int changed; /* true when not known */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) int disk; /* disk in drive (-1 == unknown) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) int motor; /* true when motor is at speed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) int busy; /* true when drive is active */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) int dirty; /* true when trackbuf is not on disk */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) int status; /* current error code for unit */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) struct gendisk *gendisk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) struct blk_mq_tag_set tag_set;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) * Error codes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) #define FD_OK 0 /* operation succeeded */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) #define FD_ERROR -1 /* general error (seek, read, write, etc) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) #define FD_NOUNIT 1 /* unit does not exist */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) #define FD_UNITBUSY 2 /* unit already active */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) #define FD_NOTACTIVE 3 /* unit is not active */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) #define FD_NOTREADY 4 /* unit is not ready (motor not on/no disk) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) #define MFM_NOSYNC 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) #define MFM_HEADER 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) #define MFM_DATA 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) #define MFM_TRACK 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) * Floppy ID values
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) #define FD_NODRIVE 0x00000000 /* response when no unit is present */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) #define FD_DD_3 0xffffffff /* double-density 3.5" (880K) drive */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) #define FD_HD_3 0x55555555 /* high-density 3.5" (1760K) drive */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) #define FD_DD_5 0xaaaaaaaa /* double-density 5.25" (440K) drive */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) static DEFINE_MUTEX(amiflop_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) static unsigned long int fd_def_df0 = FD_DD_3; /* default for df0 if it doesn't identify */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) module_param(fd_def_df0, ulong, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) * Macros
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) #define MOTOR_ON (ciab.prb &= ~DSKMOTOR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) #define MOTOR_OFF (ciab.prb |= DSKMOTOR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) #define SELECT(mask) (ciab.prb &= ~mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) #define DESELECT(mask) (ciab.prb |= mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) #define SELMASK(drive) (1 << (3 + (drive & 3)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) static struct fd_drive_type drive_types[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) /* code name tr he rdsz wrsz sm pc1 pc2 sd st st*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) /* warning: times are now in milliseconds (ms) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) { FD_DD_3, "DD 3.5", 80, 2, 14716, 13630, 1, 80,161, 3, 18, 1},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) { FD_HD_3, "HD 3.5", 80, 2, 28344, 27258, 2, 80,161, 3, 18, 1},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) { FD_DD_5, "DD 5.25", 40, 2, 14716, 13630, 1, 40, 81, 6, 30, 2},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) { FD_NODRIVE, "No Drive", 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) static int num_dr_types = ARRAY_SIZE(drive_types);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) static int amiga_read(int), dos_read(int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) static void amiga_write(int), dos_write(int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) static struct fd_data_type data_types[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) { "Amiga", 11 , amiga_read, amiga_write},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) { "MS-Dos", 9, dos_read, dos_write}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) /* current info on each unit */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) static struct amiga_floppy_struct unit[FD_MAX_UNITS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) static struct timer_list flush_track_timer[FD_MAX_UNITS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) static struct timer_list post_write_timer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) static unsigned long post_write_timer_drive;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) static struct timer_list motor_on_timer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) static struct timer_list motor_off_timer[FD_MAX_UNITS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) static int on_attempts;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) /* Synchronization of FDC access */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) /* request loop (trackbuffer) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) static volatile int fdc_busy = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) static volatile int fdc_nested;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) static DECLARE_WAIT_QUEUE_HEAD(fdc_wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) static DECLARE_COMPLETION(motor_on_completion);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) static volatile int selected = -1; /* currently selected drive */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) static int writepending;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) static int writefromint;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) static char *raw_buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) static DEFINE_SPINLOCK(amiflop_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) #define RAW_BUF_SIZE 30000 /* size of raw disk data */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) * These are global variables, as that's the easiest way to give
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) * information to interrupts. They are the data used for the current
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) * request.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) static volatile char block_flag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) static DECLARE_WAIT_QUEUE_HEAD(wait_fd_block);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) /* MS-Dos MFM Coding tables (should go quick and easy) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) static unsigned char mfmencode[16]={
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) 0x2a, 0x29, 0x24, 0x25, 0x12, 0x11, 0x14, 0x15,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) 0x4a, 0x49, 0x44, 0x45, 0x52, 0x51, 0x54, 0x55
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) static unsigned char mfmdecode[128];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) /* floppy internal millisecond timer stuff */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) static DECLARE_COMPLETION(ms_wait_completion);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) #define MS_TICKS ((amiga_eclock+50)/1000)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) * Note that MAX_ERRORS=X doesn't imply that we retry every bad read
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) * max X times - some types of errors increase the errorcount by 2 or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) * even 3, so we might actually retry only X/2 times before giving up.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) #define MAX_ERRORS 12
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) #define custom amiga_custom
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) /* Prevent "aliased" accesses. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) static int fd_ref[4] = { 0,0,0,0 };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) static int fd_device[4] = { 0, 0, 0, 0 };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) * Here come the actual hardware access and helper functions.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) * They are not reentrant and single threaded because all drives
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) * share the same hardware and the same trackbuffer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) /* Milliseconds timer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) static irqreturn_t ms_isr(int irq, void *dummy)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) complete(&ms_wait_completion);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) /* all waits are queued up
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) A more generic routine would do a schedule a la timer.device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) static void ms_delay(int ms)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) int ticks;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) static DEFINE_MUTEX(mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) if (ms > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) mutex_lock(&mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) ticks = MS_TICKS*ms-1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) ciaa.tblo=ticks%256;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) ciaa.tbhi=ticks/256;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) ciaa.crb=0x19; /*count eclock, force load, one-shoot, start */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) wait_for_completion(&ms_wait_completion);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) mutex_unlock(&mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) /* Hardware semaphore */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) /* returns true when we would get the semaphore */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) static inline int try_fdc(int drive)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) drive &= 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) return ((fdc_busy < 0) || (fdc_busy == drive));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) static void get_fdc(int drive)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) drive &= 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) #ifdef DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) printk("get_fdc: drive %d fdc_busy %d fdc_nested %d\n",drive,fdc_busy,fdc_nested);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) local_irq_save(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) wait_event(fdc_wait, try_fdc(drive));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) fdc_busy = drive;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) fdc_nested++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) local_irq_restore(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) static inline void rel_fdc(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) #ifdef DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) if (fdc_nested == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) printk("fd: unmatched rel_fdc\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) printk("rel_fdc: fdc_busy %d fdc_nested %d\n",fdc_busy,fdc_nested);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) fdc_nested--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) if (fdc_nested == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) fdc_busy = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) wake_up(&fdc_wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) static void fd_select (int drive)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) unsigned char prb = ~0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) drive&=3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) #ifdef DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) printk("selecting %d\n",drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) if (drive == selected)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) get_fdc(drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) selected = drive;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) if (unit[drive].track % 2 != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) prb &= ~DSKSIDE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) if (unit[drive].motor == 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) prb &= ~DSKMOTOR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) ciab.prb |= (SELMASK(0)|SELMASK(1)|SELMASK(2)|SELMASK(3));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) ciab.prb = prb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) prb &= ~SELMASK(drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) ciab.prb = prb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) rel_fdc();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) static void fd_deselect (int drive)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) unsigned char prb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) drive&=3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) #ifdef DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) printk("deselecting %d\n",drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) if (drive != selected) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) printk(KERN_WARNING "Deselecting drive %d while %d was selected!\n",drive,selected);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) get_fdc(drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) local_irq_save(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) selected = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) prb = ciab.prb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) prb |= (SELMASK(0)|SELMASK(1)|SELMASK(2)|SELMASK(3));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) ciab.prb = prb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) local_irq_restore (flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) rel_fdc();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) static void motor_on_callback(struct timer_list *unused)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) if (!(ciaa.pra & DSKRDY) || --on_attempts == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) complete_all(&motor_on_completion);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) motor_on_timer.expires = jiffies + HZ/10;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) add_timer(&motor_on_timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) static int fd_motor_on(int nr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) nr &= 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) del_timer(motor_off_timer + nr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) if (!unit[nr].motor) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) unit[nr].motor = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) fd_select(nr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) reinit_completion(&motor_on_completion);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) mod_timer(&motor_on_timer, jiffies + HZ/2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) on_attempts = 10;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) wait_for_completion(&motor_on_completion);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) fd_deselect(nr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) if (on_attempts == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) on_attempts = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) #if 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) printk (KERN_ERR "motor_on failed, turning motor off\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) fd_motor_off (motor_off_timer + nr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) printk (KERN_WARNING "DSKRDY not set after 1.5 seconds - assuming drive is spinning notwithstanding\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) static void fd_motor_off(struct timer_list *timer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) unsigned long drive = ((unsigned long)timer -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) (unsigned long)&motor_off_timer[0]) /
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) sizeof(motor_off_timer[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) drive&=3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) if (!try_fdc(drive)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) /* We would be blocked in an interrupt, so try again later */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) timer->expires = jiffies + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) add_timer(timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) unit[drive].motor = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) fd_select(drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) udelay (1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) fd_deselect(drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) static void floppy_off (unsigned int nr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) int drive;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) drive = nr & 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) mod_timer(motor_off_timer + drive, jiffies + 3*HZ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) static int fd_calibrate(int drive)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) unsigned char prb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) int n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) drive &= 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) get_fdc(drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) if (!fd_motor_on (drive))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) fd_select (drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) prb = ciab.prb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) prb |= DSKSIDE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) prb &= ~DSKDIREC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) ciab.prb = prb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) for (n = unit[drive].type->tracks/2; n != 0; --n) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) if (ciaa.pra & DSKTRACK0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) prb &= ~DSKSTEP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) ciab.prb = prb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) prb |= DSKSTEP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) udelay (2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) ciab.prb = prb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) ms_delay(unit[drive].type->step_delay);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) ms_delay (unit[drive].type->settle_time);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) prb |= DSKDIREC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) n = unit[drive].type->tracks + 20;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) for (;;) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) prb &= ~DSKSTEP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) ciab.prb = prb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) prb |= DSKSTEP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) udelay (2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) ciab.prb = prb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) ms_delay(unit[drive].type->step_delay + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) if ((ciaa.pra & DSKTRACK0) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) if (--n == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) printk (KERN_ERR "fd%d: calibrate failed, turning motor off\n", drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) fd_motor_off (motor_off_timer + drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) unit[drive].track = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) rel_fdc();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) unit[drive].track = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) ms_delay(unit[drive].type->settle_time);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) rel_fdc();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) fd_deselect(drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) static int fd_seek(int drive, int track)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) unsigned char prb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) int cnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) #ifdef DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) printk("seeking drive %d to track %d\n",drive,track);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) drive &= 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) get_fdc(drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) if (unit[drive].track == track) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) rel_fdc();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) if (!fd_motor_on(drive)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) rel_fdc();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) if (unit[drive].track < 0 && !fd_calibrate(drive)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) rel_fdc();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) fd_select (drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) cnt = unit[drive].track/2 - track/2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) prb = ciab.prb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) prb |= DSKSIDE | DSKDIREC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) if (track % 2 != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) prb &= ~DSKSIDE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) if (cnt < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) cnt = - cnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) prb &= ~DSKDIREC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) ciab.prb = prb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) if (track % 2 != unit[drive].track % 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) ms_delay (unit[drive].type->side_time);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) unit[drive].track = track;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) if (cnt == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) rel_fdc();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) fd_deselect(drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) do {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) prb &= ~DSKSTEP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) ciab.prb = prb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) prb |= DSKSTEP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) udelay (1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) ciab.prb = prb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) ms_delay (unit[drive].type->step_delay);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) } while (--cnt != 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) ms_delay (unit[drive].type->settle_time);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) rel_fdc();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) fd_deselect(drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) static unsigned long fd_get_drive_id(int drive)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) ulong id = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) drive&=3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) get_fdc(drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) /* set up for ID */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) MOTOR_ON;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) udelay(2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) SELECT(SELMASK(drive));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) udelay(2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) DESELECT(SELMASK(drive));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) udelay(2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) MOTOR_OFF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) udelay(2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) SELECT(SELMASK(drive));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) udelay(2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) DESELECT(SELMASK(drive));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) udelay(2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) /* loop and read disk ID */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) for (i=0; i<32; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) SELECT(SELMASK(drive));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) udelay(2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) /* read and store value of DSKRDY */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) id <<= 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) id |= (ciaa.pra & DSKRDY) ? 0 : 1; /* cia regs are low-active! */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) DESELECT(SELMASK(drive));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) rel_fdc();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) * RB: At least A500/A2000's df0: don't identify themselves.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) * As every (real) Amiga has at least a 3.5" DD drive as df0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) * we default to that if df0: doesn't identify as a certain
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) * type.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) if(drive == 0 && id == FD_NODRIVE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) id = fd_def_df0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) printk(KERN_NOTICE "fd: drive 0 didn't identify, setting default %08lx\n", (ulong)fd_def_df0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) /* return the ID value */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) return (id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) static irqreturn_t fd_block_done(int irq, void *dummy)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) if (block_flag)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) custom.dsklen = 0x4000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) if (block_flag == 2) { /* writing */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) writepending = 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) post_write_timer.expires = jiffies + 1; /* at least 2 ms */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) post_write_timer_drive = selected;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) add_timer(&post_write_timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) else { /* reading */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) block_flag = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) wake_up (&wait_fd_block);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) static void raw_read(int drive)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) drive&=3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) get_fdc(drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) wait_event(wait_fd_block, !block_flag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) fd_select(drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) /* setup adkcon bits correctly */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) custom.adkcon = ADK_MSBSYNC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) custom.adkcon = ADK_SETCLR|ADK_WORDSYNC|ADK_FAST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) custom.dsksync = MFM_SYNC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) custom.dsklen = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) custom.dskptr = (u_char *)ZTWO_PADDR((u_char *)raw_buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) custom.dsklen = unit[drive].type->read_size/sizeof(short) | DSKLEN_DMAEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) custom.dsklen = unit[drive].type->read_size/sizeof(short) | DSKLEN_DMAEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) block_flag = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) wait_event(wait_fd_block, !block_flag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) custom.dsklen = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) fd_deselect(drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) rel_fdc();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) static int raw_write(int drive)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) ushort adk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) drive&=3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) get_fdc(drive); /* corresponds to rel_fdc() in post_write() */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) if ((ciaa.pra & DSKPROT) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) rel_fdc();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) wait_event(wait_fd_block, !block_flag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) fd_select(drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) /* clear adkcon bits */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) custom.adkcon = ADK_PRECOMP1|ADK_PRECOMP0|ADK_WORDSYNC|ADK_MSBSYNC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) /* set appropriate adkcon bits */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) adk = ADK_SETCLR|ADK_FAST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) if ((ulong)unit[drive].track >= unit[drive].type->precomp2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) adk |= ADK_PRECOMP1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) else if ((ulong)unit[drive].track >= unit[drive].type->precomp1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) adk |= ADK_PRECOMP0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) custom.adkcon = adk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) custom.dsklen = DSKLEN_WRITE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) custom.dskptr = (u_char *)ZTWO_PADDR((u_char *)raw_buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) custom.dsklen = unit[drive].type->write_size/sizeof(short) | DSKLEN_DMAEN|DSKLEN_WRITE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) custom.dsklen = unit[drive].type->write_size/sizeof(short) | DSKLEN_DMAEN|DSKLEN_WRITE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) block_flag = 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) * to be called at least 2ms after the write has finished but before any
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) * other access to the hardware.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) static void post_write (unsigned long drive)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) #ifdef DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) printk("post_write for drive %ld\n",drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) drive &= 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) custom.dsklen = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) block_flag = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) writepending = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) writefromint = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) unit[drive].dirty = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) wake_up(&wait_fd_block);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) fd_deselect(drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) rel_fdc(); /* corresponds to get_fdc() in raw_write */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) static void post_write_callback(struct timer_list *timer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) post_write(post_write_timer_drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) * The following functions are to convert the block contents into raw data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) * written to disk and vice versa.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) * (Add other formats here ;-))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) static unsigned long scan_sync(unsigned long raw, unsigned long end)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) ushort *ptr = (ushort *)raw, *endp = (ushort *)end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) while (ptr < endp && *ptr++ != 0x4489)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) if (ptr < endp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) while (*ptr == 0x4489 && ptr < endp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) ptr++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) return (ulong)ptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) static inline unsigned long checksum(unsigned long *addr, int len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) unsigned long csum = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) len /= sizeof(*addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) while (len-- > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) csum ^= *addr++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) csum = ((csum>>1) & 0x55555555) ^ (csum & 0x55555555);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) return csum;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) static unsigned long decode (unsigned long *data, unsigned long *raw,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) int len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) ulong *odd, *even;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) /* convert length from bytes to longwords */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) len >>= 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) odd = raw;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) even = odd + len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) /* prepare return pointer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) raw += len * 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) do {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) *data++ = ((*odd++ & 0x55555555) << 1) | (*even++ & 0x55555555);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) } while (--len != 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) return (ulong)raw;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) struct header {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) unsigned char magic;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) unsigned char track;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) unsigned char sect;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) unsigned char ord;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) unsigned char labels[16];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) unsigned long hdrchk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832) unsigned long datachk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) static int amiga_read(int drive)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) unsigned long raw;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) unsigned long end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) int scnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) unsigned long csum;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) struct header hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) drive&=3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) raw = (long) raw_buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) end = raw + unit[drive].type->read_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) for (scnt = 0;scnt < unit[drive].dtype->sects * unit[drive].type->sect_mult; scnt++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) if (!(raw = scan_sync(raw, end))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) printk (KERN_INFO "can't find sync for sector %d\n", scnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) return MFM_NOSYNC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) raw = decode ((ulong *)&hdr.magic, (ulong *)raw, 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) raw = decode ((ulong *)&hdr.labels, (ulong *)raw, 16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) raw = decode ((ulong *)&hdr.hdrchk, (ulong *)raw, 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) raw = decode ((ulong *)&hdr.datachk, (ulong *)raw, 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) csum = checksum((ulong *)&hdr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) (char *)&hdr.hdrchk-(char *)&hdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) #ifdef DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) printk ("(%x,%d,%d,%d) (%lx,%lx,%lx,%lx) %lx %lx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) hdr.magic, hdr.track, hdr.sect, hdr.ord,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) *(ulong *)&hdr.labels[0], *(ulong *)&hdr.labels[4],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) *(ulong *)&hdr.labels[8], *(ulong *)&hdr.labels[12],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) hdr.hdrchk, hdr.datachk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) if (hdr.hdrchk != csum) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) printk(KERN_INFO "MFM_HEADER: %08lx,%08lx\n", hdr.hdrchk, csum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) return MFM_HEADER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) /* verify track */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) if (hdr.track != unit[drive].track) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) printk(KERN_INFO "MFM_TRACK: %d, %d\n", hdr.track, unit[drive].track);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) return MFM_TRACK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) raw = decode ((ulong *)(unit[drive].trackbuf + hdr.sect*512),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) (ulong *)raw, 512);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881) csum = checksum((ulong *)(unit[drive].trackbuf + hdr.sect*512), 512);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) if (hdr.datachk != csum) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) printk(KERN_INFO "MFM_DATA: (%x:%d:%d:%d) sc=%d %lx, %lx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) hdr.magic, hdr.track, hdr.sect, hdr.ord, scnt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886) hdr.datachk, csum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) printk (KERN_INFO "data=(%lx,%lx,%lx,%lx)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) ((ulong *)(unit[drive].trackbuf+hdr.sect*512))[0],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) ((ulong *)(unit[drive].trackbuf+hdr.sect*512))[1],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890) ((ulong *)(unit[drive].trackbuf+hdr.sect*512))[2],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) ((ulong *)(unit[drive].trackbuf+hdr.sect*512))[3]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) return MFM_DATA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) static void encode(unsigned long data, unsigned long *dest)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) unsigned long data2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903) data &= 0x55555555;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) data2 = data ^ 0x55555555;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) data |= ((data2 >> 1) | 0x80000000) & (data2 << 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) if (*(dest - 1) & 0x00000001)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) data &= 0x7FFFFFFF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) *dest = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) static void encode_block(unsigned long *dest, unsigned long *src, int len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915) int cnt, to_cnt = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) unsigned long data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) /* odd bits */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919) for (cnt = 0; cnt < len / 4; cnt++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920) data = src[cnt] >> 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) encode(data, dest + to_cnt++);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) /* even bits */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) for (cnt = 0; cnt < len / 4; cnt++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) data = src[cnt];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) encode(data, dest + to_cnt++);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931) static unsigned long *putsec(int disk, unsigned long *raw, int cnt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) struct header hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) disk&=3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) *raw = (raw[-1]&1) ? 0x2AAAAAAA : 0xAAAAAAAA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938) raw++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939) *raw++ = 0x44894489;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941) hdr.magic = 0xFF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942) hdr.track = unit[disk].track;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943) hdr.sect = cnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944) hdr.ord = unit[disk].dtype->sects * unit[disk].type->sect_mult - cnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945) for (i = 0; i < 16; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946) hdr.labels[i] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) hdr.hdrchk = checksum((ulong *)&hdr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948) (char *)&hdr.hdrchk-(char *)&hdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949) hdr.datachk = checksum((ulong *)(unit[disk].trackbuf+cnt*512), 512);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951) encode_block(raw, (ulong *)&hdr.magic, 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952) raw += 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953) encode_block(raw, (ulong *)&hdr.labels, 16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954) raw += 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955) encode_block(raw, (ulong *)&hdr.hdrchk, 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956) raw += 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) encode_block(raw, (ulong *)&hdr.datachk, 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) raw += 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959) encode_block(raw, (ulong *)(unit[disk].trackbuf+cnt*512), 512);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960) raw += 256;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962) return raw;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965) static void amiga_write(int disk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967) unsigned int cnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968) unsigned long *ptr = (unsigned long *)raw_buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970) disk&=3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971) /* gap space */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972) for (cnt = 0; cnt < 415 * unit[disk].type->sect_mult; cnt++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973) *ptr++ = 0xaaaaaaaa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975) /* sectors */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976) for (cnt = 0; cnt < unit[disk].dtype->sects * unit[disk].type->sect_mult; cnt++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977) ptr = putsec (disk, ptr, cnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978) *(ushort *)ptr = (ptr[-1]&1) ? 0x2AA8 : 0xAAA8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982) struct dos_header {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983) unsigned char track, /* 0-80 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984) side, /* 0-1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985) sec, /* 0-...*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) len_desc;/* 2 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987) unsigned short crc; /* on 68000 we got an alignment problem,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988) but this compiler solves it by adding silently
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989) adding a pad byte so data won't fit
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990) and this took about 3h to discover.... */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991) unsigned char gap1[22]; /* for longword-alignedness (0x4e) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994) /* crc routines are borrowed from the messydos-handler */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996) /* excerpt from the messydos-device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997) ; The CRC is computed not only over the actual data, but including
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998) ; the SYNC mark (3 * $a1) and the 'ID/DATA - Address Mark' ($fe/$fb).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999) ; As we don't read or encode these fields into our buffers, we have to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000) ; preload the registers containing the CRC with the values they would have
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001) ; after stepping over these fields.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002) ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003) ; How CRCs "really" work:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004) ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005) ; First, you should regard a bitstring as a series of coefficients of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006) ; polynomials. We calculate with these polynomials in modulo-2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007) ; arithmetic, in which both add and subtract are done the same as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008) ; exclusive-or. Now, we modify our data (a very long polynomial) in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009) ; such a way that it becomes divisible by the CCITT-standard 16-bit
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010) ; 16 12 5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011) ; polynomial: x + x + x + 1, represented by $11021. The easiest
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1012) ; way to do this would be to multiply (using proper arithmetic) our
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1013) ; datablock with $11021. So we have:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1014) ; data * $11021 =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1015) ; data * ($10000 + $1021) =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1016) ; data * $10000 + data * $1021
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1017) ; The left part of this is simple: Just add two 0 bytes. But then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1018) ; the right part (data $1021) remains difficult and even could have
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1019) ; a carry into the left part. The solution is to use a modified
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1020) ; multiplication, which has a result that is not correct, but with
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1021) ; a difference of any multiple of $11021. We then only need to keep
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1022) ; the 16 least significant bits of the result.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1023) ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1024) ; The following algorithm does this for us:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1025) ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1026) ; unsigned char *data, c, crclo, crchi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1027) ; while (not done) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1028) ; c = *data++ + crchi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1029) ; crchi = (@ c) >> 8 + crclo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1030) ; crclo = @ c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1031) ; }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1032) ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1033) ; Remember, + is done with EOR, the @ operator is in two tables (high
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1034) ; and low byte separately), which is calculated as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1035) ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1036) ; $1021 * (c & $F0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1037) ; xor $1021 * (c & $0F)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1038) ; xor $1021 * (c >> 4) (* is regular multiplication)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1039) ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1040) ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1041) ; Anyway, the end result is the same as the remainder of the division of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1042) ; the data by $11021. I am afraid I need to study theory a bit more...
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1043)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1044)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1045) my only works was to code this from manx to C....
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1046)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1047) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1048)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1049) static ushort dos_crc(void * data_a3, int data_d0, int data_d1, int data_d3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1050) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1051) static unsigned char CRCTable1[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1052) 0x00,0x10,0x20,0x30,0x40,0x50,0x60,0x70,0x81,0x91,0xa1,0xb1,0xc1,0xd1,0xe1,0xf1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1053) 0x12,0x02,0x32,0x22,0x52,0x42,0x72,0x62,0x93,0x83,0xb3,0xa3,0xd3,0xc3,0xf3,0xe3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1054) 0x24,0x34,0x04,0x14,0x64,0x74,0x44,0x54,0xa5,0xb5,0x85,0x95,0xe5,0xf5,0xc5,0xd5,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1055) 0x36,0x26,0x16,0x06,0x76,0x66,0x56,0x46,0xb7,0xa7,0x97,0x87,0xf7,0xe7,0xd7,0xc7,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1056) 0x48,0x58,0x68,0x78,0x08,0x18,0x28,0x38,0xc9,0xd9,0xe9,0xf9,0x89,0x99,0xa9,0xb9,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1057) 0x5a,0x4a,0x7a,0x6a,0x1a,0x0a,0x3a,0x2a,0xdb,0xcb,0xfb,0xeb,0x9b,0x8b,0xbb,0xab,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1058) 0x6c,0x7c,0x4c,0x5c,0x2c,0x3c,0x0c,0x1c,0xed,0xfd,0xcd,0xdd,0xad,0xbd,0x8d,0x9d,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1059) 0x7e,0x6e,0x5e,0x4e,0x3e,0x2e,0x1e,0x0e,0xff,0xef,0xdf,0xcf,0xbf,0xaf,0x9f,0x8f,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1060) 0x91,0x81,0xb1,0xa1,0xd1,0xc1,0xf1,0xe1,0x10,0x00,0x30,0x20,0x50,0x40,0x70,0x60,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1061) 0x83,0x93,0xa3,0xb3,0xc3,0xd3,0xe3,0xf3,0x02,0x12,0x22,0x32,0x42,0x52,0x62,0x72,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1062) 0xb5,0xa5,0x95,0x85,0xf5,0xe5,0xd5,0xc5,0x34,0x24,0x14,0x04,0x74,0x64,0x54,0x44,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1063) 0xa7,0xb7,0x87,0x97,0xe7,0xf7,0xc7,0xd7,0x26,0x36,0x06,0x16,0x66,0x76,0x46,0x56,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1064) 0xd9,0xc9,0xf9,0xe9,0x99,0x89,0xb9,0xa9,0x58,0x48,0x78,0x68,0x18,0x08,0x38,0x28,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1065) 0xcb,0xdb,0xeb,0xfb,0x8b,0x9b,0xab,0xbb,0x4a,0x5a,0x6a,0x7a,0x0a,0x1a,0x2a,0x3a,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1066) 0xfd,0xed,0xdd,0xcd,0xbd,0xad,0x9d,0x8d,0x7c,0x6c,0x5c,0x4c,0x3c,0x2c,0x1c,0x0c,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1067) 0xef,0xff,0xcf,0xdf,0xaf,0xbf,0x8f,0x9f,0x6e,0x7e,0x4e,0x5e,0x2e,0x3e,0x0e,0x1e
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1068) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1069)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1070) static unsigned char CRCTable2[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1071) 0x00,0x21,0x42,0x63,0x84,0xa5,0xc6,0xe7,0x08,0x29,0x4a,0x6b,0x8c,0xad,0xce,0xef,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1072) 0x31,0x10,0x73,0x52,0xb5,0x94,0xf7,0xd6,0x39,0x18,0x7b,0x5a,0xbd,0x9c,0xff,0xde,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1073) 0x62,0x43,0x20,0x01,0xe6,0xc7,0xa4,0x85,0x6a,0x4b,0x28,0x09,0xee,0xcf,0xac,0x8d,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1074) 0x53,0x72,0x11,0x30,0xd7,0xf6,0x95,0xb4,0x5b,0x7a,0x19,0x38,0xdf,0xfe,0x9d,0xbc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1075) 0xc4,0xe5,0x86,0xa7,0x40,0x61,0x02,0x23,0xcc,0xed,0x8e,0xaf,0x48,0x69,0x0a,0x2b,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1076) 0xf5,0xd4,0xb7,0x96,0x71,0x50,0x33,0x12,0xfd,0xdc,0xbf,0x9e,0x79,0x58,0x3b,0x1a,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1077) 0xa6,0x87,0xe4,0xc5,0x22,0x03,0x60,0x41,0xae,0x8f,0xec,0xcd,0x2a,0x0b,0x68,0x49,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1078) 0x97,0xb6,0xd5,0xf4,0x13,0x32,0x51,0x70,0x9f,0xbe,0xdd,0xfc,0x1b,0x3a,0x59,0x78,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1079) 0x88,0xa9,0xca,0xeb,0x0c,0x2d,0x4e,0x6f,0x80,0xa1,0xc2,0xe3,0x04,0x25,0x46,0x67,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1080) 0xb9,0x98,0xfb,0xda,0x3d,0x1c,0x7f,0x5e,0xb1,0x90,0xf3,0xd2,0x35,0x14,0x77,0x56,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1081) 0xea,0xcb,0xa8,0x89,0x6e,0x4f,0x2c,0x0d,0xe2,0xc3,0xa0,0x81,0x66,0x47,0x24,0x05,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1082) 0xdb,0xfa,0x99,0xb8,0x5f,0x7e,0x1d,0x3c,0xd3,0xf2,0x91,0xb0,0x57,0x76,0x15,0x34,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1083) 0x4c,0x6d,0x0e,0x2f,0xc8,0xe9,0x8a,0xab,0x44,0x65,0x06,0x27,0xc0,0xe1,0x82,0xa3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1084) 0x7d,0x5c,0x3f,0x1e,0xf9,0xd8,0xbb,0x9a,0x75,0x54,0x37,0x16,0xf1,0xd0,0xb3,0x92,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1085) 0x2e,0x0f,0x6c,0x4d,0xaa,0x8b,0xe8,0xc9,0x26,0x07,0x64,0x45,0xa2,0x83,0xe0,0xc1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1086) 0x1f,0x3e,0x5d,0x7c,0x9b,0xba,0xd9,0xf8,0x17,0x36,0x55,0x74,0x93,0xb2,0xd1,0xf0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1087) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1088)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1089) /* look at the asm-code - what looks in C a bit strange is almost as good as handmade */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1090) register int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1091) register unsigned char *CRCT1, *CRCT2, *data, c, crch, crcl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1092)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1093) CRCT1=CRCTable1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1094) CRCT2=CRCTable2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1095) data=data_a3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1096) crcl=data_d1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1097) crch=data_d0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1098) for (i=data_d3; i>=0; i--) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1099) c = (*data++) ^ crch;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1100) crch = CRCT1[c] ^ crcl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1101) crcl = CRCT2[c];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1102) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1103) return (crch<<8)|crcl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1104) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1106) static inline ushort dos_hdr_crc (struct dos_header *hdr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1107) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1108) return dos_crc(&(hdr->track), 0xb2, 0x30, 3); /* precomputed magic */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1109) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1111) static inline ushort dos_data_crc(unsigned char *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1112) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1113) return dos_crc(data, 0xe2, 0x95 ,511); /* precomputed magic */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1114) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1116) static inline unsigned char dos_decode_byte(ushort word)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1117) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1118) register ushort w2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1119) register unsigned char byte;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1120) register unsigned char *dec = mfmdecode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1122) w2=word;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1123) w2>>=8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1124) w2&=127;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1125) byte = dec[w2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1126) byte <<= 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1127) w2 = word & 127;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1128) byte |= dec[w2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1129) return byte;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1130) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1132) static unsigned long dos_decode(unsigned char *data, unsigned short *raw, int len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1133) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1134) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1135)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1136) for (i = 0; i < len; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1137) *data++=dos_decode_byte(*raw++);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1138) return ((ulong)raw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1139) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1141) #ifdef DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1142) static void dbg(unsigned long ptr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1143) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1144) printk("raw data @%08lx: %08lx, %08lx ,%08lx, %08lx\n", ptr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1145) ((ulong *)ptr)[0], ((ulong *)ptr)[1],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1146) ((ulong *)ptr)[2], ((ulong *)ptr)[3]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1147) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1148) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1149)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1150) static int dos_read(int drive)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1151) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1152) unsigned long end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1153) unsigned long raw;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1154) int scnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1155) unsigned short crc,data_crc[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1156) struct dos_header hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1157)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1158) drive&=3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1159) raw = (long) raw_buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1160) end = raw + unit[drive].type->read_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1161)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1162) for (scnt=0; scnt < unit[drive].dtype->sects * unit[drive].type->sect_mult; scnt++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1163) do { /* search for the right sync of each sec-hdr */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1164) if (!(raw = scan_sync (raw, end))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1165) printk(KERN_INFO "dos_read: no hdr sync on "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1166) "track %d, unit %d for sector %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1167) unit[drive].track,drive,scnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1168) return MFM_NOSYNC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1169) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1170) #ifdef DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1171) dbg(raw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1172) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1173) } while (*((ushort *)raw)!=0x5554); /* loop usually only once done */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1174) raw+=2; /* skip over headermark */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1175) raw = dos_decode((unsigned char *)&hdr,(ushort *) raw,8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1176) crc = dos_hdr_crc(&hdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1177)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1178) #ifdef DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1179) printk("(%3d,%d,%2d,%d) %x\n", hdr.track, hdr.side,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1180) hdr.sec, hdr.len_desc, hdr.crc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1181) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1182)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1183) if (crc != hdr.crc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1184) printk(KERN_INFO "dos_read: MFM_HEADER %04x,%04x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1185) hdr.crc, crc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1186) return MFM_HEADER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1187) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1188) if (hdr.track != unit[drive].track/unit[drive].type->heads) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1189) printk(KERN_INFO "dos_read: MFM_TRACK %d, %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1190) hdr.track,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1191) unit[drive].track/unit[drive].type->heads);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1192) return MFM_TRACK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1193) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1194)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1195) if (hdr.side != unit[drive].track%unit[drive].type->heads) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1196) printk(KERN_INFO "dos_read: MFM_SIDE %d, %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1197) hdr.side,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1198) unit[drive].track%unit[drive].type->heads);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1199) return MFM_TRACK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1200) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1201)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1202) if (hdr.len_desc != 2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1203) printk(KERN_INFO "dos_read: unknown sector len "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1204) "descriptor %d\n", hdr.len_desc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1205) return MFM_DATA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1206) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1207) #ifdef DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1208) printk("hdr accepted\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1209) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1210) if (!(raw = scan_sync (raw, end))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1211) printk(KERN_INFO "dos_read: no data sync on track "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1212) "%d, unit %d for sector%d, disk sector %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1213) unit[drive].track, drive, scnt, hdr.sec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1214) return MFM_NOSYNC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1215) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1216) #ifdef DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1217) dbg(raw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1218) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1219)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1220) if (*((ushort *)raw)!=0x5545) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1221) printk(KERN_INFO "dos_read: no data mark after "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1222) "sync (%d,%d,%d,%d) sc=%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1223) hdr.track,hdr.side,hdr.sec,hdr.len_desc,scnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1224) return MFM_NOSYNC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1225) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1226)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1227) raw+=2; /* skip data mark (included in checksum) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1228) raw = dos_decode((unsigned char *)(unit[drive].trackbuf + (hdr.sec - 1) * 512), (ushort *) raw, 512);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1229) raw = dos_decode((unsigned char *)data_crc,(ushort *) raw,4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1230) crc = dos_data_crc(unit[drive].trackbuf + (hdr.sec - 1) * 512);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1232) if (crc != data_crc[0]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1233) printk(KERN_INFO "dos_read: MFM_DATA (%d,%d,%d,%d) "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1234) "sc=%d, %x %x\n", hdr.track, hdr.side,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1235) hdr.sec, hdr.len_desc, scnt,data_crc[0], crc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1236) printk(KERN_INFO "data=(%lx,%lx,%lx,%lx,...)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1237) ((ulong *)(unit[drive].trackbuf+(hdr.sec-1)*512))[0],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1238) ((ulong *)(unit[drive].trackbuf+(hdr.sec-1)*512))[1],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1239) ((ulong *)(unit[drive].trackbuf+(hdr.sec-1)*512))[2],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1240) ((ulong *)(unit[drive].trackbuf+(hdr.sec-1)*512))[3]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1241) return MFM_DATA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1242) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1243) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1244) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1245) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1246)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1247) static inline ushort dos_encode_byte(unsigned char byte)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1248) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1249) register unsigned char *enc, b2, b1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1250) register ushort word;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1251)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1252) enc=mfmencode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1253) b1=byte;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1254) b2=b1>>4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1255) b1&=15;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1256) word=enc[b2] <<8 | enc [b1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1257) return (word|((word&(256|64)) ? 0: 128));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1258) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1259)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1260) static void dos_encode_block(ushort *dest, unsigned char *src, int len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1261) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1262) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1263)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1264) for (i = 0; i < len; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1265) *dest=dos_encode_byte(*src++);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1266) *dest|=((dest[-1]&1)||(*dest&0x4000))? 0: 0x8000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1267) dest++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1268) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1269) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1270)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1271) static unsigned long *ms_putsec(int drive, unsigned long *raw, int cnt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1272) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1273) static struct dos_header hdr={0,0,0,2,0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1274) {78,78,78,78,78,78,78,78,78,78,78,78,78,78,78,78,78,78,78,78,78,78}};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1275) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1276) static ushort crc[2]={0,0x4e4e};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1277)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1278) drive&=3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1279) /* id gap 1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1280) /* the MFM word before is always 9254 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1281) for(i=0;i<6;i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1282) *raw++=0xaaaaaaaa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1283) /* 3 sync + 1 headermark */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1284) *raw++=0x44894489;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1285) *raw++=0x44895554;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1286)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1287) /* fill in the variable parts of the header */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1288) hdr.track=unit[drive].track/unit[drive].type->heads;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1289) hdr.side=unit[drive].track%unit[drive].type->heads;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1290) hdr.sec=cnt+1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1291) hdr.crc=dos_hdr_crc(&hdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1292)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1293) /* header (without "magic") and id gap 2*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1294) dos_encode_block((ushort *)raw,(unsigned char *) &hdr.track,28);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1295) raw+=14;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1296)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1297) /*id gap 3 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1298) for(i=0;i<6;i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1299) *raw++=0xaaaaaaaa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1300)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1301) /* 3 syncs and 1 datamark */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1302) *raw++=0x44894489;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1303) *raw++=0x44895545;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1304)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1305) /* data */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1306) dos_encode_block((ushort *)raw,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1307) (unsigned char *)unit[drive].trackbuf+cnt*512,512);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1308) raw+=256;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1309)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1310) /*data crc + jd's special gap (long words :-/) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1311) crc[0]=dos_data_crc(unit[drive].trackbuf+cnt*512);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1312) dos_encode_block((ushort *) raw,(unsigned char *)crc,4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1313) raw+=2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1314)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1315) /* data gap */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1316) for(i=0;i<38;i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1317) *raw++=0x92549254;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1318)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1319) return raw; /* wrote 652 MFM words */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1320) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1321)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1322) static void dos_write(int disk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1323) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1324) int cnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1325) unsigned long raw = (unsigned long) raw_buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1326) unsigned long *ptr=(unsigned long *)raw;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1327)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1328) disk&=3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1329) /* really gap4 + indexgap , but we write it first and round it up */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1330) for (cnt=0;cnt<425;cnt++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1331) *ptr++=0x92549254;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1332)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1333) /* the following is just guessed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1334) if (unit[disk].type->sect_mult==2) /* check for HD-Disks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1335) for(cnt=0;cnt<473;cnt++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1336) *ptr++=0x92549254;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1337)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1338) /* now the index marks...*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1339) for (cnt=0;cnt<20;cnt++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1340) *ptr++=0x92549254;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1341) for (cnt=0;cnt<6;cnt++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1342) *ptr++=0xaaaaaaaa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1343) *ptr++=0x52245224;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1344) *ptr++=0x52245552;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1345) for (cnt=0;cnt<20;cnt++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1346) *ptr++=0x92549254;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1347)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1348) /* sectors */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1349) for(cnt = 0; cnt < unit[disk].dtype->sects * unit[disk].type->sect_mult; cnt++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1350) ptr=ms_putsec(disk,ptr,cnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1351)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1352) *(ushort *)ptr = 0xaaa8; /* MFM word before is always 0x9254 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1353) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1354)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1355) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1356) * Here comes the high level stuff (i.e. the filesystem interface)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1357) * and helper functions.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1358) * Normally this should be the only part that has to be adapted to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1359) * different kernel versions.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1360) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1361)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1362) /* FIXME: this assumes the drive is still spinning -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1363) * which is only true if we complete writing a track within three seconds
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1364) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1365) static void flush_track_callback(struct timer_list *timer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1366) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1367) unsigned long nr = ((unsigned long)timer -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1368) (unsigned long)&flush_track_timer[0]) /
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1369) sizeof(flush_track_timer[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1370)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1371) nr&=3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1372) writefromint = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1373) if (!try_fdc(nr)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1374) /* we might block in an interrupt, so try again later */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1375) flush_track_timer[nr].expires = jiffies + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1376) add_timer(flush_track_timer + nr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1377) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1378) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1379) get_fdc(nr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1380) (*unit[nr].dtype->write_fkt)(nr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1381) if (!raw_write(nr)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1382) printk (KERN_NOTICE "floppy disk write protected\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1383) writefromint = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1384) writepending = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1385) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1386) rel_fdc();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1387) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1388)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1389) static int non_int_flush_track (unsigned long nr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1390) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1391) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1392)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1393) nr&=3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1394) writefromint = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1395) del_timer(&post_write_timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1396) get_fdc(nr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1397) if (!fd_motor_on(nr)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1398) writepending = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1399) rel_fdc();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1400) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1401) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1402) local_irq_save(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1403) if (writepending != 2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1404) local_irq_restore(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1405) (*unit[nr].dtype->write_fkt)(nr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1406) if (!raw_write(nr)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1407) printk (KERN_NOTICE "floppy disk write protected "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1408) "in write!\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1409) writepending = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1410) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1411) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1412) wait_event(wait_fd_block, block_flag != 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1413) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1414) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1415) local_irq_restore(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1416) ms_delay(2); /* 2 ms post_write delay */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1417) post_write(nr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1418) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1419) rel_fdc();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1420) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1421) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1422)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1423) static int get_track(int drive, int track)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1424) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1425) int error, errcnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1426)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1427) drive&=3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1428) if (unit[drive].track == track)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1429) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1430) get_fdc(drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1431) if (!fd_motor_on(drive)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1432) rel_fdc();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1433) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1434) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1435)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1436) if (unit[drive].dirty == 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1437) del_timer (flush_track_timer + drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1438) non_int_flush_track (drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1439) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1440) errcnt = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1441) while (errcnt < MAX_ERRORS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1442) if (!fd_seek(drive, track))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1443) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1444) raw_read(drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1445) error = (*unit[drive].dtype->read_fkt)(drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1446) if (error == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1447) rel_fdc();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1448) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1449) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1450) /* Read Error Handling: recalibrate and try again */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1451) unit[drive].track = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1452) errcnt++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1453) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1454) rel_fdc();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1455) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1456) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1457)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1458) static blk_status_t amiflop_rw_cur_segment(struct amiga_floppy_struct *floppy,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1459) struct request *rq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1460) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1461) int drive = floppy - unit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1462) unsigned int cnt, block, track, sector;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1463) char *data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1464)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1465) for (cnt = 0; cnt < blk_rq_cur_sectors(rq); cnt++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1466) #ifdef DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1467) printk("fd: sector %ld + %d requested for %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1468) blk_rq_pos(rq), cnt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1469) (rq_data_dir(rq) == READ) ? "read" : "write");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1470) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1471) block = blk_rq_pos(rq) + cnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1472) track = block / (floppy->dtype->sects * floppy->type->sect_mult);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1473) sector = block % (floppy->dtype->sects * floppy->type->sect_mult);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1474) data = bio_data(rq->bio) + 512 * cnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1475) #ifdef DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1476) printk("access to track %d, sector %d, with buffer at "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1477) "0x%08lx\n", track, sector, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1478) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1479)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1480) if (get_track(drive, track) == -1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1481) return BLK_STS_IOERR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1482)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1483) if (rq_data_dir(rq) == READ) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1484) memcpy(data, floppy->trackbuf + sector * 512, 512);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1485) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1486) memcpy(floppy->trackbuf + sector * 512, data, 512);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1487)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1488) /* keep the drive spinning while writes are scheduled */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1489) if (!fd_motor_on(drive))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1490) return BLK_STS_IOERR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1491) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1492) * setup a callback to write the track buffer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1493) * after a short (1 tick) delay.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1494) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1495) floppy->dirty = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1496) /* reset the timer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1497) mod_timer (flush_track_timer + drive, jiffies + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1498) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1499) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1500)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1501) return BLK_STS_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1502) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1503)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1504) static blk_status_t amiflop_queue_rq(struct blk_mq_hw_ctx *hctx,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1505) const struct blk_mq_queue_data *bd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1506) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1507) struct request *rq = bd->rq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1508) struct amiga_floppy_struct *floppy = rq->rq_disk->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1509) blk_status_t err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1510)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1511) if (!spin_trylock_irq(&amiflop_lock))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1512) return BLK_STS_DEV_RESOURCE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1513)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1514) blk_mq_start_request(rq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1515)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1516) do {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1517) err = amiflop_rw_cur_segment(floppy, rq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1518) } while (blk_update_request(rq, err, blk_rq_cur_bytes(rq)));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1519) blk_mq_end_request(rq, err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1520)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1521) spin_unlock_irq(&amiflop_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1522) return BLK_STS_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1523) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1524)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1525) static int fd_getgeo(struct block_device *bdev, struct hd_geometry *geo)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1526) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1527) int drive = MINOR(bdev->bd_dev) & 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1528)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1529) geo->heads = unit[drive].type->heads;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1530) geo->sectors = unit[drive].dtype->sects * unit[drive].type->sect_mult;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1531) geo->cylinders = unit[drive].type->tracks;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1532) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1533) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1534)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1535) static int fd_locked_ioctl(struct block_device *bdev, fmode_t mode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1536) unsigned int cmd, unsigned long param)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1537) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1538) struct amiga_floppy_struct *p = bdev->bd_disk->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1539) int drive = p - unit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1540) static struct floppy_struct getprm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1541) void __user *argp = (void __user *)param;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1542)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1543) switch(cmd){
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1544) case FDFMTBEG:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1545) get_fdc(drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1546) if (fd_ref[drive] > 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1547) rel_fdc();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1548) return -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1549) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1550) fsync_bdev(bdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1551) if (fd_motor_on(drive) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1552) rel_fdc();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1553) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1554) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1555) if (fd_calibrate(drive) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1556) rel_fdc();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1557) return -ENXIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1558) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1559) floppy_off(drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1560) rel_fdc();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1561) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1562) case FDFMTTRK:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1563) if (param < p->type->tracks * p->type->heads)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1564) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1565) get_fdc(drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1566) if (fd_seek(drive,param) != 0){
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1567) memset(p->trackbuf, FD_FILL_BYTE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1568) p->dtype->sects * p->type->sect_mult * 512);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1569) non_int_flush_track(drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1570) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1571) floppy_off(drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1572) rel_fdc();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1573) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1574) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1575) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1576) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1577) case FDFMTEND:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1578) floppy_off(drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1579) invalidate_bdev(bdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1580) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1581) case FDGETPRM:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1582) memset((void *)&getprm, 0, sizeof (getprm));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1583) getprm.track=p->type->tracks;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1584) getprm.head=p->type->heads;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1585) getprm.sect=p->dtype->sects * p->type->sect_mult;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1586) getprm.size=p->blocks;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1587) if (copy_to_user(argp, &getprm, sizeof(struct floppy_struct)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1588) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1589) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1590) case FDSETPRM:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1591) case FDDEFPRM:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1592) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1593) case FDFLUSH: /* unconditionally, even if not needed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1594) del_timer (flush_track_timer + drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1595) non_int_flush_track(drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1596) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1597) #ifdef RAW_IOCTL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1598) case IOCTL_RAW_TRACK:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1599) if (copy_to_user(argp, raw_buf, p->type->read_size))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1600) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1601) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1602) return p->type->read_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1603) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1604) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1605) return -ENOSYS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1606) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1607) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1608) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1609)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1610) static int fd_ioctl(struct block_device *bdev, fmode_t mode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1611) unsigned int cmd, unsigned long param)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1612) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1613) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1614)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1615) mutex_lock(&amiflop_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1616) ret = fd_locked_ioctl(bdev, mode, cmd, param);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1617) mutex_unlock(&amiflop_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1618)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1619) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1620) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1621)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1622) static void fd_probe(int dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1623) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1624) unsigned long code;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1625) int type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1626) int drive;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1627)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1628) drive = dev & 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1629) code = fd_get_drive_id(drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1630)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1631) /* get drive type */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1632) for (type = 0; type < num_dr_types; type++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1633) if (drive_types[type].code == code)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1634) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1635)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1636) if (type >= num_dr_types) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1637) printk(KERN_WARNING "fd_probe: unsupported drive type "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1638) "%08lx found\n", code);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1639) unit[drive].type = &drive_types[num_dr_types-1]; /* FD_NODRIVE */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1640) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1641) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1642)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1643) unit[drive].type = drive_types + type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1644) unit[drive].track = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1645)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1646) unit[drive].disk = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1647) unit[drive].motor = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1648) unit[drive].busy = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1649) unit[drive].status = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1650) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1651)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1652) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1653) * floppy_open check for aliasing (/dev/fd0 can be the same as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1654) * /dev/PS0 etc), and disallows simultaneous access to the same
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1655) * drive with different device numbers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1656) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1657) static int floppy_open(struct block_device *bdev, fmode_t mode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1658) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1659) int drive = MINOR(bdev->bd_dev) & 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1660) int system = (MINOR(bdev->bd_dev) & 4) >> 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1661) int old_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1662) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1663)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1664) mutex_lock(&amiflop_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1665) old_dev = fd_device[drive];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1666)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1667) if (fd_ref[drive] && old_dev != system) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1668) mutex_unlock(&amiflop_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1669) return -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1670) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1671)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1672) if (mode & (FMODE_READ|FMODE_WRITE)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1673) bdev_check_media_change(bdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1674) if (mode & FMODE_WRITE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1675) int wrprot;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1676)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1677) get_fdc(drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1678) fd_select (drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1679) wrprot = !(ciaa.pra & DSKPROT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1680) fd_deselect (drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1681) rel_fdc();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1682)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1683) if (wrprot) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1684) mutex_unlock(&amiflop_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1685) return -EROFS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1686) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1687) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1688) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1689)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1690) local_irq_save(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1691) fd_ref[drive]++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1692) fd_device[drive] = system;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1693) local_irq_restore(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1694)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1695) unit[drive].dtype=&data_types[system];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1696) unit[drive].blocks=unit[drive].type->heads*unit[drive].type->tracks*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1697) data_types[system].sects*unit[drive].type->sect_mult;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1698) set_capacity(unit[drive].gendisk, unit[drive].blocks);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1699)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1700) printk(KERN_INFO "fd%d: accessing %s-disk with %s-layout\n",drive,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1701) unit[drive].type->name, data_types[system].name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1702)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1703) mutex_unlock(&amiflop_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1704) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1705) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1706)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1707) static void floppy_release(struct gendisk *disk, fmode_t mode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1708) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1709) struct amiga_floppy_struct *p = disk->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1710) int drive = p - unit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1711)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1712) mutex_lock(&amiflop_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1713) if (unit[drive].dirty == 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1714) del_timer (flush_track_timer + drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1715) non_int_flush_track (drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1716) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1717)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1718) if (!fd_ref[drive]--) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1719) printk(KERN_CRIT "floppy_release with fd_ref == 0");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1720) fd_ref[drive] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1721) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1722) #ifdef MODULE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1723) floppy_off (drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1724) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1725) mutex_unlock(&amiflop_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1726) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1727)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1728) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1729) * check_events is never called from an interrupt, so we can relax a bit
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1730) * here, sleep etc. Note that floppy-on tries to set current_DOR to point
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1731) * to the desired drive, but it will probably not survive the sleep if
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1732) * several floppies are used at the same time: thus the loop.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1733) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1734) static unsigned amiga_check_events(struct gendisk *disk, unsigned int clearing)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1735) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1736) struct amiga_floppy_struct *p = disk->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1737) int drive = p - unit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1738) int changed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1739) static int first_time = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1740)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1741) if (first_time)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1742) changed = first_time--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1743) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1744) get_fdc(drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1745) fd_select (drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1746) changed = !(ciaa.pra & DSKCHANGE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1747) fd_deselect (drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1748) rel_fdc();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1749) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1750)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1751) if (changed) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1752) fd_probe(drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1753) p->track = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1754) p->dirty = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1755) writepending = 0; /* if this was true before, too bad! */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1756) writefromint = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1757) return DISK_EVENT_MEDIA_CHANGE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1758) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1759) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1760) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1761)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1762) static const struct block_device_operations floppy_fops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1763) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1764) .open = floppy_open,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1765) .release = floppy_release,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1766) .ioctl = fd_ioctl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1767) .getgeo = fd_getgeo,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1768) .check_events = amiga_check_events,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1769) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1770)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1771) static const struct blk_mq_ops amiflop_mq_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1772) .queue_rq = amiflop_queue_rq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1773) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1774)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1775) static struct gendisk *fd_alloc_disk(int drive)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1776) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1777) struct gendisk *disk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1778)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1779) disk = alloc_disk(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1780) if (!disk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1781) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1782)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1783) disk->queue = blk_mq_init_sq_queue(&unit[drive].tag_set, &amiflop_mq_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1784) 2, BLK_MQ_F_SHOULD_MERGE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1785) if (IS_ERR(disk->queue)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1786) disk->queue = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1787) goto out_put_disk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1788) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1789)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1790) unit[drive].trackbuf = kmalloc(FLOPPY_MAX_SECTORS * 512, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1791) if (!unit[drive].trackbuf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1792) goto out_cleanup_queue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1793)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1794) return disk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1795)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1796) out_cleanup_queue:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1797) blk_cleanup_queue(disk->queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1798) disk->queue = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1799) blk_mq_free_tag_set(&unit[drive].tag_set);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1800) out_put_disk:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1801) put_disk(disk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1802) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1803) unit[drive].type->code = FD_NODRIVE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1804) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1805) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1806)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1807) static int __init fd_probe_drives(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1808) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1809) int drive,drives,nomem;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1810)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1811) pr_info("FD: probing units\nfound");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1812) drives=0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1813) nomem=0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1814) for(drive=0;drive<FD_MAX_UNITS;drive++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1815) struct gendisk *disk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1816) fd_probe(drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1817) if (unit[drive].type->code == FD_NODRIVE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1818) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1819)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1820) disk = fd_alloc_disk(drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1821) if (!disk) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1822) pr_cont(" no mem for fd%d", drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1823) nomem = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1824) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1825) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1826) unit[drive].gendisk = disk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1827) drives++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1828)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1829) pr_cont(" fd%d",drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1830) disk->major = FLOPPY_MAJOR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1831) disk->first_minor = drive;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1832) disk->fops = &floppy_fops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1833) disk->events = DISK_EVENT_MEDIA_CHANGE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1834) sprintf(disk->disk_name, "fd%d", drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1835) disk->private_data = &unit[drive];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1836) set_capacity(disk, 880*2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1837) add_disk(disk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1838) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1839) if ((drives > 0) || (nomem == 0)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1840) if (drives == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1841) pr_cont(" no drives");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1842) pr_cont("\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1843) return drives;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1844) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1845) pr_cont("\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1846) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1847) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1848)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1849) static struct kobject *floppy_find(dev_t dev, int *part, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1850) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1851) int drive = *part & 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1852) if (unit[drive].type->code == FD_NODRIVE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1853) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1854) *part = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1855) return get_disk_and_module(unit[drive].gendisk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1856) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1857)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1858) static int __init amiga_floppy_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1859) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1860) int i, ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1861)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1862) if (register_blkdev(FLOPPY_MAJOR,"fd"))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1863) return -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1864)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1865) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1866) raw_buf = amiga_chip_alloc(RAW_BUF_SIZE, "Floppy");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1867) if (!raw_buf) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1868) printk("fd: cannot get chip mem buffer\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1869) goto out_blkdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1870) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1871)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1872) ret = -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1873) if (request_irq(IRQ_AMIGA_DSKBLK, fd_block_done, 0, "floppy_dma", NULL)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1874) printk("fd: cannot get irq for dma\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1875) goto out_irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1876) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1877)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1878) if (request_irq(IRQ_AMIGA_CIAA_TB, ms_isr, 0, "floppy_timer", NULL)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1879) printk("fd: cannot get irq for timer\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1880) goto out_irq2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1881) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1882)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1883) ret = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1884) if (fd_probe_drives() < 1) /* No usable drives */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1885) goto out_probe;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1886)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1887) blk_register_region(MKDEV(FLOPPY_MAJOR, 0), 256, THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1888) floppy_find, NULL, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1889)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1890) /* initialize variables */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1891) timer_setup(&motor_on_timer, motor_on_callback, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1892) motor_on_timer.expires = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1893) for (i = 0; i < FD_MAX_UNITS; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1894) timer_setup(&motor_off_timer[i], fd_motor_off, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1895) motor_off_timer[i].expires = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1896) timer_setup(&flush_track_timer[i], flush_track_callback, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1897) flush_track_timer[i].expires = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1898)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1899) unit[i].track = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1900) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1901)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1902) timer_setup(&post_write_timer, post_write_callback, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1903) post_write_timer.expires = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1904)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1905) for (i = 0; i < 128; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1906) mfmdecode[i]=255;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1907) for (i = 0; i < 16; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1908) mfmdecode[mfmencode[i]]=i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1909)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1910) /* make sure that disk DMA is enabled */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1911) custom.dmacon = DMAF_SETCLR | DMAF_DISK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1912)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1913) /* init ms timer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1914) ciaa.crb = 8; /* one-shot, stop */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1915) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1916)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1917) out_probe:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1918) free_irq(IRQ_AMIGA_CIAA_TB, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1919) out_irq2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1920) free_irq(IRQ_AMIGA_DSKBLK, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1921) out_irq:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1922) amiga_chip_free(raw_buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1923) out_blkdev:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1924) unregister_blkdev(FLOPPY_MAJOR,"fd");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1925) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1926) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1927)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1928) static struct platform_driver amiga_floppy_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1929) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1930) .name = "amiga-floppy",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1931) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1932) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1933)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1934) static int __init amiga_floppy_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1935) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1936) return platform_driver_probe(&amiga_floppy_driver, amiga_floppy_probe);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1937) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1938)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1939) module_init(amiga_floppy_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1940)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1941) #ifndef MODULE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1942) static int __init amiga_floppy_setup (char *str)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1943) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1944) int n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1945) if (!MACH_IS_AMIGA)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1946) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1947) if (!get_option(&str, &n))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1948) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1949) printk (KERN_INFO "amiflop: Setting default df0 to %x\n", n);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1950) fd_def_df0 = n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1951) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1952) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1953)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1954) __setup("floppy=", amiga_floppy_setup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1955) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1956)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1957) MODULE_ALIAS("platform:amiga-floppy");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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