^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) * drivers/block/ataflop.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) * Atari Support by Bjoern Brauel, Roman Hodek
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Big cleanup Sep 11..14 1994 Roman Hodek:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * - Driver now works interrupt driven
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * - Support for two drives; should work, but I cannot test that :-(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * - Reading is done in whole tracks and buffered to speed up things
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * - Disk change detection and drive deselecting after motor-off
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * similar to TOS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * - Autodetection of disk format (DD/HD); untested yet, because I
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * don't have an HD drive :-(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * Fixes Nov 13 1994 Martin Schaller:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * - Autodetection works now
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * - Support for 5 1/4'' disks
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * - Removed drive type (unknown on atari)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) * - Do seeks with 8 Mhz
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) * Changes by Andreas Schwab:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) * - After errors in multiple read mode try again reading single sectors
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) * (Feb 1995):
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) * - Clean up error handling
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * - Set blk_size for proper size checking
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) * - Initialize track register when testing presence of floppy
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) * - Implement some ioctl's
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) * Changes by Torsten Lang:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) * - When probing the floppies we should add the FDCCMDADD_H flag since
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) * the FDC will otherwise wait forever when no disk is inserted...
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) * ++ Freddi Aschwanden (fa) 20.9.95 fixes for medusa:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) * - MFPDELAY() after each FDC access -> atari
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) * - more/other disk formats
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) * - DMA to the block buffer directly if we have a 32bit DMA
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) * - for medusa, the step rate is always 3ms
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) * - on medusa, use only cache_push()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) * Roman:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) * - Make disk format numbering independent from minors
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) * - Let user set max. supported drive type (speeds up format
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) * detection, saves buffer space)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) * Roman 10/15/95:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) * - implement some more ioctls
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) * - disk formatting
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) * Andreas 95/12/12:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) * - increase gap size at start of track for HD/ED disks
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) * Michael (MSch) 11/07/96:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) * - implemented FDSETPRM and FDDEFPRM ioctl
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) * Andreas (97/03/19):
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) * - implemented missing BLK* ioctls
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) * Things left to do:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) * - Formatting
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) * - Maybe a better strategy for disk change detection (does anyone
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) * know one?)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) #include <linux/fd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) #include <linux/blk-mq.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) #include <linux/mutex.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) #include <linux/completion.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) #include <linux/wait.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) #include <asm/atariints.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) #include <asm/atari_stdma.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) #include <asm/atari_stram.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) #define FD_MAX_UNITS 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) #undef DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) static DEFINE_MUTEX(ataflop_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) static struct request *fd_request;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) * WD1772 stuff
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) /* register codes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) #define FDCSELREG_STP (0x80) /* command/status register */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) #define FDCSELREG_TRA (0x82) /* track register */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) #define FDCSELREG_SEC (0x84) /* sector register */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) #define FDCSELREG_DTA (0x86) /* data register */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) /* register names for FDC_READ/WRITE macros */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) #define FDCREG_CMD 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) #define FDCREG_STATUS 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) #define FDCREG_TRACK 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) #define FDCREG_SECTOR 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) #define FDCREG_DATA 6
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) /* command opcodes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) #define FDCCMD_RESTORE (0x00) /* - */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) #define FDCCMD_SEEK (0x10) /* | */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) #define FDCCMD_STEP (0x20) /* | TYP 1 Commands */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) #define FDCCMD_STIN (0x40) /* | */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) #define FDCCMD_STOT (0x60) /* - */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) #define FDCCMD_RDSEC (0x80) /* - TYP 2 Commands */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) #define FDCCMD_WRSEC (0xa0) /* - " */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) #define FDCCMD_RDADR (0xc0) /* - */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) #define FDCCMD_RDTRA (0xe0) /* | TYP 3 Commands */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) #define FDCCMD_WRTRA (0xf0) /* - */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) #define FDCCMD_FORCI (0xd0) /* - TYP 4 Command */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) /* command modifier bits */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) #define FDCCMDADD_SR6 (0x00) /* step rate settings */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) #define FDCCMDADD_SR12 (0x01)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) #define FDCCMDADD_SR2 (0x02)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) #define FDCCMDADD_SR3 (0x03)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) #define FDCCMDADD_V (0x04) /* verify */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) #define FDCCMDADD_H (0x08) /* wait for spin-up */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) #define FDCCMDADD_U (0x10) /* update track register */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) #define FDCCMDADD_M (0x10) /* multiple sector access */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) #define FDCCMDADD_E (0x04) /* head settling flag */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) #define FDCCMDADD_P (0x02) /* precompensation off */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) #define FDCCMDADD_A0 (0x01) /* DAM flag */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) /* status register bits */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) #define FDCSTAT_MOTORON (0x80) /* motor on */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) #define FDCSTAT_WPROT (0x40) /* write protected (FDCCMD_WR*) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) #define FDCSTAT_SPINUP (0x20) /* motor speed stable (Type I) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) #define FDCSTAT_DELDAM (0x20) /* sector has deleted DAM (Type II+III) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) #define FDCSTAT_RECNF (0x10) /* record not found */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) #define FDCSTAT_CRC (0x08) /* CRC error */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) #define FDCSTAT_TR00 (0x04) /* Track 00 flag (Type I) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) #define FDCSTAT_LOST (0x04) /* Lost Data (Type II+III) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) #define FDCSTAT_IDX (0x02) /* Index status (Type I) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) #define FDCSTAT_DRQ (0x02) /* DRQ status (Type II+III) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) #define FDCSTAT_BUSY (0x01) /* FDC is busy */
^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) /* PSG Port A Bit Nr 0 .. Side Sel .. 0 -> Side 1 1 -> Side 2 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) #define DSKSIDE (0x01)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) #define DSKDRVNONE (0x06)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) #define DSKDRV0 (0x02)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) #define DSKDRV1 (0x04)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) /* step rates */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) #define FDCSTEP_6 0x00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) #define FDCSTEP_12 0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) #define FDCSTEP_2 0x02
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) #define FDCSTEP_3 0x03
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) struct atari_format_descr {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) int track; /* to be formatted */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) int head; /* "" "" */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) int sect_offset; /* offset of first sector */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) /* Disk types: DD, HD, ED */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) static struct atari_disk_type {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) const char *name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) unsigned spt; /* sectors per track */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) unsigned blocks; /* total number of blocks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) unsigned fdc_speed; /* fdc_speed setting */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) unsigned stretch; /* track doubling ? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) } atari_disk_type[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) { "d360", 9, 720, 0, 0}, /* 0: 360kB diskette */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) { "D360", 9, 720, 0, 1}, /* 1: 360kb in 720k or 1.2MB drive */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) { "D720", 9,1440, 0, 0}, /* 2: 720kb in 720k or 1.2MB drive */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) { "D820", 10,1640, 0, 0}, /* 3: DD disk with 82 tracks/10 sectors */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) /* formats above are probed for type DD */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) #define MAX_TYPE_DD 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) { "h1200",15,2400, 3, 0}, /* 4: 1.2MB diskette */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) { "H1440",18,2880, 3, 0}, /* 5: 1.4 MB diskette (HD) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) { "H1640",20,3280, 3, 0}, /* 6: 1.64MB diskette (fat HD) 82 tr 20 sec */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) /* formats above are probed for types DD and HD */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) #define MAX_TYPE_HD 6
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) { "E2880",36,5760, 3, 0}, /* 7: 2.8 MB diskette (ED) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) { "E3280",40,6560, 3, 0}, /* 8: 3.2 MB diskette (fat ED) 82 tr 40 sec */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) /* formats above are probed for types DD, HD and ED */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) #define MAX_TYPE_ED 8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) /* types below are never autoprobed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) { "H1680",21,3360, 3, 0}, /* 9: 1.68MB diskette (fat HD) 80 tr 21 sec */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) { "h410",10,820, 0, 1}, /* 10: 410k diskette 41 tr 10 sec, stretch */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) { "h1476",18,2952, 3, 0}, /* 11: 1.48MB diskette 82 tr 18 sec */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) { "H1722",21,3444, 3, 0}, /* 12: 1.72MB diskette 82 tr 21 sec */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) { "h420",10,840, 0, 1}, /* 13: 420k diskette 42 tr 10 sec, stretch */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) { "H830",10,1660, 0, 0}, /* 14: 820k diskette 83 tr 10 sec */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) { "h1494",18,2952, 3, 0}, /* 15: 1.49MB diskette 83 tr 18 sec */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) { "H1743",21,3486, 3, 0}, /* 16: 1.74MB diskette 83 tr 21 sec */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) { "h880",11,1760, 0, 0}, /* 17: 880k diskette 80 tr 11 sec */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) { "D1040",13,2080, 0, 0}, /* 18: 1.04MB diskette 80 tr 13 sec */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) { "D1120",14,2240, 0, 0}, /* 19: 1.12MB diskette 80 tr 14 sec */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) { "h1600",20,3200, 3, 0}, /* 20: 1.60MB diskette 80 tr 20 sec */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) { "H1760",22,3520, 3, 0}, /* 21: 1.76MB diskette 80 tr 22 sec */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) { "H1920",24,3840, 3, 0}, /* 22: 1.92MB diskette 80 tr 24 sec */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) { "E3200",40,6400, 3, 0}, /* 23: 3.2MB diskette 80 tr 40 sec */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) { "E3520",44,7040, 3, 0}, /* 24: 3.52MB diskette 80 tr 44 sec */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) { "E3840",48,7680, 3, 0}, /* 25: 3.84MB diskette 80 tr 48 sec */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) { "H1840",23,3680, 3, 0}, /* 26: 1.84MB diskette 80 tr 23 sec */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) { "D800",10,1600, 0, 0}, /* 27: 800k diskette 80 tr 10 sec */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) static int StartDiskType[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) MAX_TYPE_DD,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) MAX_TYPE_HD,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) MAX_TYPE_ED
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) #define TYPE_DD 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) #define TYPE_HD 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) #define TYPE_ED 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) static int DriveType = TYPE_HD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) static DEFINE_SPINLOCK(ataflop_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) /* Array for translating minors into disk formats */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) static struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) int index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) unsigned drive_types;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) } minor2disktype[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) { 0, TYPE_DD }, /* 1: d360 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) { 4, TYPE_HD }, /* 2: h1200 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) { 1, TYPE_DD }, /* 3: D360 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) { 2, TYPE_DD }, /* 4: D720 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) { 1, TYPE_DD }, /* 5: h360 = D360 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) { 2, TYPE_DD }, /* 6: h720 = D720 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) { 5, TYPE_HD }, /* 7: H1440 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) { 7, TYPE_ED }, /* 8: E2880 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) /* some PC formats :-) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) { 8, TYPE_ED }, /* 9: E3280 <- was "CompaQ" == E2880 for PC */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) { 5, TYPE_HD }, /* 10: h1440 = H1440 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) { 9, TYPE_HD }, /* 11: H1680 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) { 10, TYPE_DD }, /* 12: h410 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) { 3, TYPE_DD }, /* 13: H820 <- == D820, 82x10 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) { 11, TYPE_HD }, /* 14: h1476 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) { 12, TYPE_HD }, /* 15: H1722 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) { 13, TYPE_DD }, /* 16: h420 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) { 14, TYPE_DD }, /* 17: H830 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) { 15, TYPE_HD }, /* 18: h1494 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) { 16, TYPE_HD }, /* 19: H1743 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) { 17, TYPE_DD }, /* 20: h880 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) { 18, TYPE_DD }, /* 21: D1040 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) { 19, TYPE_DD }, /* 22: D1120 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) { 20, TYPE_HD }, /* 23: h1600 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) { 21, TYPE_HD }, /* 24: H1760 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) { 22, TYPE_HD }, /* 25: H1920 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) { 23, TYPE_ED }, /* 26: E3200 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) { 24, TYPE_ED }, /* 27: E3520 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) { 25, TYPE_ED }, /* 28: E3840 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) { 26, TYPE_HD }, /* 29: H1840 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) { 27, TYPE_DD }, /* 30: D800 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) { 6, TYPE_HD }, /* 31: H1640 <- was H1600 == h1600 for PC */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) #define NUM_DISK_MINORS ARRAY_SIZE(minor2disktype)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) * Maximum disk size (in kilobytes). This default is used whenever the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) * current disk size is unknown.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) #define MAX_DISK_SIZE 3280
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) * MSch: User-provided type information. 'drive' points to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) * the respective entry of this array. Set by FDSETPRM ioctls.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) static struct atari_disk_type user_params[FD_MAX_UNITS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) * User-provided permanent type information. 'drive' points to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) * the respective entry of this array. Set by FDDEFPRM ioctls,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) * restored upon disk change by floppy_revalidate() if valid (as seen by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) * default_params[].blocks > 0 - a bit in unit[].flags might be used for this?)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) static struct atari_disk_type default_params[FD_MAX_UNITS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) /* current info on each unit */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) static struct atari_floppy_struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) int connected; /* !=0 : drive is connected */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) int autoprobe; /* !=0 : do autoprobe */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) struct atari_disk_type *disktype; /* current type of disk */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) int track; /* current head position or -1 if
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) unknown */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) unsigned int steprate; /* steprate setting */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) unsigned int wpstat; /* current state of WP signal (for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) disk change detection) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) int flags; /* flags */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) struct gendisk *disk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) int ref;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) int type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) struct blk_mq_tag_set tag_set;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) } unit[FD_MAX_UNITS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) #define UD unit[drive]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) #define UDT unit[drive].disktype
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) #define SUD unit[SelectedDrive]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) #define SUDT unit[SelectedDrive].disktype
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) #define FDC_READ(reg) ({ \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) /* unsigned long __flags; */ \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) unsigned short __val; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) /* local_irq_save(__flags); */ \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) dma_wd.dma_mode_status = 0x80 | (reg); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) udelay(25); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) __val = dma_wd.fdc_acces_seccount; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) MFPDELAY(); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) /* local_irq_restore(__flags); */ \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) __val & 0xff; \
^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) #define FDC_WRITE(reg,val) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) do { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) /* unsigned long __flags; */ \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) /* local_irq_save(__flags); */ \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) dma_wd.dma_mode_status = 0x80 | (reg); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) udelay(25); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) dma_wd.fdc_acces_seccount = (val); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) MFPDELAY(); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) /* local_irq_restore(__flags); */ \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) } while(0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) /* Buffering variables:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) * First, there is a DMA buffer in ST-RAM that is used for floppy DMA
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) * operations. Second, a track buffer is used to cache a whole track
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) * of the disk to save read operations. These are two separate buffers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) * because that allows write operations without clearing the track buffer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) static int MaxSectors[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) 11, 22, 44
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) static int BufferSize[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) 15*512, 30*512, 60*512
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) #define BUFFER_SIZE (BufferSize[DriveType])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) unsigned char *DMABuffer; /* buffer for writes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) static unsigned long PhysDMABuffer; /* physical address */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) static int UseTrackbuffer = -1; /* Do track buffering? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) module_param(UseTrackbuffer, int, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) unsigned char *TrackBuffer; /* buffer for reads */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) static unsigned long PhysTrackBuffer; /* physical address */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) static int BufferDrive, BufferSide, BufferTrack;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) static int read_track; /* non-zero if we are reading whole tracks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) #define SECTOR_BUFFER(sec) (TrackBuffer + ((sec)-1)*512)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) #define IS_BUFFERED(drive,side,track) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) (BufferDrive == (drive) && BufferSide == (side) && BufferTrack == (track))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) * These are global variables, as that's the easiest way to give
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) * information to interrupts. They are the data used for the current
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) * request.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) static int SelectedDrive = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) static int ReqCmd, ReqBlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) static int ReqSide, ReqTrack, ReqSector, ReqCnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) static int HeadSettleFlag = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) static unsigned char *ReqData, *ReqBuffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) static int MotorOn = 0, MotorOffTrys;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) static int IsFormatting = 0, FormatError;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) static int UserSteprate[FD_MAX_UNITS] = { -1, -1 };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) module_param_array(UserSteprate, int, NULL, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) static DECLARE_COMPLETION(format_wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) static unsigned long changed_floppies = 0xff, fake_change = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) #define CHECK_CHANGE_DELAY HZ/2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) #define FD_MOTOR_OFF_DELAY (3*HZ)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) #define FD_MOTOR_OFF_MAXTRY (10*20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) #define FLOPPY_TIMEOUT (6*HZ)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) #define RECALIBRATE_ERRORS 4 /* After this many errors the drive
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) * will be recalibrated. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) #define MAX_ERRORS 8 /* After this many errors the driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) * will give up. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) * The driver is trying to determine the correct media format
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) * while Probing is set. fd_rwsec_done() clears it after a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) * successful access.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) static int Probing = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) /* This flag is set when a dummy seek is necessary to make the WP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) * status bit accessible.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) static int NeedSeek = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) #ifdef DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) #define DPRINT(a) printk a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) #define DPRINT(a)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) /***************************** Prototypes *****************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) static void fd_select_side( int side );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) static void fd_select_drive( int drive );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) static void fd_deselect( void );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) static void fd_motor_off_timer(struct timer_list *unused);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) static void check_change(struct timer_list *unused);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) static irqreturn_t floppy_irq (int irq, void *dummy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) static void fd_error( void );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) static int do_format(int drive, int type, struct atari_format_descr *desc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) static void do_fd_action( int drive );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) static void fd_calibrate( void );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) static void fd_calibrate_done( int status );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) static void fd_seek( void );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) static void fd_seek_done( int status );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) static void fd_rwsec( void );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) static void fd_readtrack_check(struct timer_list *unused);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) static void fd_rwsec_done( int status );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) static void fd_rwsec_done1(int status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) static void fd_writetrack( void );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) static void fd_writetrack_done( int status );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) static void fd_times_out(struct timer_list *unused);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) static void finish_fdc( void );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) static void finish_fdc_done( int dummy );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) static void setup_req_params( int drive );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) static int fd_locked_ioctl(struct block_device *bdev, fmode_t mode, unsigned int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) cmd, unsigned long param);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) static void fd_probe( int drive );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) static int fd_test_drive_present( int drive );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) static void config_types( void );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) static int floppy_open(struct block_device *bdev, fmode_t mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) static void floppy_release(struct gendisk *disk, fmode_t mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) /************************* End of Prototypes **************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) static DEFINE_TIMER(motor_off_timer, fd_motor_off_timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) static DEFINE_TIMER(readtrack_timer, fd_readtrack_check);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) static DEFINE_TIMER(timeout_timer, fd_times_out);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) static DEFINE_TIMER(fd_timer, check_change);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) static void fd_end_request_cur(blk_status_t err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) if (!blk_update_request(fd_request, err,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) blk_rq_cur_bytes(fd_request))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) __blk_mq_end_request(fd_request, err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) fd_request = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) static inline void start_motor_off_timer(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) mod_timer(&motor_off_timer, jiffies + FD_MOTOR_OFF_DELAY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) MotorOffTrys = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) static inline void start_check_change_timer( void )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) mod_timer(&fd_timer, jiffies + CHECK_CHANGE_DELAY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) static inline void start_timeout(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) mod_timer(&timeout_timer, jiffies + FLOPPY_TIMEOUT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) static inline void stop_timeout(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) del_timer(&timeout_timer);
^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) /* Select the side to use. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) static void fd_select_side( int side )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) /* protect against various other ints mucking around with the PSG */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) local_irq_save(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) sound_ym.rd_data_reg_sel = 14; /* Select PSG Port A */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) sound_ym.wd_data = (side == 0) ? sound_ym.rd_data_reg_sel | 0x01 :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) sound_ym.rd_data_reg_sel & 0xfe;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) local_irq_restore(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) /* Select a drive, update the FDC's track register and set the correct
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) * clock speed for this disk's type.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) static void fd_select_drive( int drive )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) unsigned char tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) if (drive == SelectedDrive)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) /* protect against various other ints mucking around with the PSG */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) local_irq_save(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) sound_ym.rd_data_reg_sel = 14; /* Select PSG Port A */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) tmp = sound_ym.rd_data_reg_sel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) sound_ym.wd_data = (tmp | DSKDRVNONE) & ~(drive == 0 ? DSKDRV0 : DSKDRV1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) atari_dont_touch_floppy_select = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) local_irq_restore(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) /* restore track register to saved value */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) FDC_WRITE( FDCREG_TRACK, UD.track );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) udelay(25);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) /* select 8/16 MHz */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) if (UDT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) if (ATARIHW_PRESENT(FDCSPEED))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) dma_wd.fdc_speed = UDT->fdc_speed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) SelectedDrive = drive;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) /* Deselect both drives. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) static void fd_deselect( void )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) /* protect against various other ints mucking around with the PSG */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) local_irq_save(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) atari_dont_touch_floppy_select = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) sound_ym.rd_data_reg_sel=14; /* Select PSG Port A */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) sound_ym.wd_data = (sound_ym.rd_data_reg_sel |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) (MACH_IS_FALCON ? 3 : 7)); /* no drives selected */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) /* On Falcon, the drive B select line is used on the printer port, so
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) * leave it alone... */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) SelectedDrive = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) local_irq_restore(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) /* This timer function deselects the drives when the FDC switched the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) * motor off. The deselection cannot happen earlier because the FDC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) * counts the index signals, which arrive only if one drive is selected.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) static void fd_motor_off_timer(struct timer_list *unused)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) unsigned char status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) if (SelectedDrive < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) /* no drive selected, needn't deselect anyone */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) if (stdma_islocked())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) goto retry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) status = FDC_READ( FDCREG_STATUS );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) if (!(status & 0x80)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) /* motor already turned off by FDC -> deselect drives */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) MotorOn = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) fd_deselect();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) /* not yet off, try again */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) retry:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) /* Test again later; if tested too often, it seems there is no disk
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) * in the drive and the FDC will leave the motor on forever (or,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) * at least until a disk is inserted). So we'll test only twice
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) * per second from then on...
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) mod_timer(&motor_off_timer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) jiffies + (MotorOffTrys++ < FD_MOTOR_OFF_MAXTRY ? HZ/20 : HZ/2));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) /* This function is repeatedly called to detect disk changes (as good
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) * as possible) and keep track of the current state of the write protection.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) static void check_change(struct timer_list *unused)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) static int drive = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) unsigned char old_porta;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) int stat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) if (++drive > 1 || !UD.connected)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) drive = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) /* protect against various other ints mucking around with the PSG */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) local_irq_save(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) if (!stdma_islocked()) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) sound_ym.rd_data_reg_sel = 14;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) old_porta = sound_ym.rd_data_reg_sel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) sound_ym.wd_data = (old_porta | DSKDRVNONE) &
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) ~(drive == 0 ? DSKDRV0 : DSKDRV1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) stat = !!(FDC_READ( FDCREG_STATUS ) & FDCSTAT_WPROT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) sound_ym.wd_data = old_porta;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) if (stat != UD.wpstat) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) DPRINT(( "wpstat[%d] = %d\n", drive, stat ));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) UD.wpstat = stat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) set_bit (drive, &changed_floppies);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) local_irq_restore(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) start_check_change_timer();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) /* Handling of the Head Settling Flag: This flag should be set after each
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) * seek operation, because we don't use seeks with verify.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) static inline void set_head_settle_flag(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) HeadSettleFlag = FDCCMDADD_E;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) static inline int get_head_settle_flag(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) int tmp = HeadSettleFlag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) HeadSettleFlag = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) return( tmp );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) static inline void copy_buffer(void *from, void *to)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) ulong *p1 = (ulong *)from, *p2 = (ulong *)to;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) int cnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) for (cnt = 512/4; cnt; cnt--)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) *p2++ = *p1++;
^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)
^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) /* General Interrupt Handling */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) static void (*FloppyIRQHandler)( int status ) = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) static irqreturn_t floppy_irq (int irq, void *dummy)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) unsigned char status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) void (*handler)( int );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) handler = xchg(&FloppyIRQHandler, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) if (handler) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) nop();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) status = FDC_READ( FDCREG_STATUS );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) DPRINT(("FDC irq, status = %02x handler = %08lx\n",status,(unsigned long)handler));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) handler( status );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) DPRINT(("FDC irq, no handler\n"));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) /* Error handling: If some error happened, retry some times, then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) * recalibrate, then try again, and fail after MAX_ERRORS.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) static void fd_error( void )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) if (IsFormatting) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) IsFormatting = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) FormatError = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) complete(&format_wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) if (!fd_request)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) fd_request->error_count++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) if (fd_request->error_count >= MAX_ERRORS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) printk(KERN_ERR "fd%d: too many errors.\n", SelectedDrive );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) fd_end_request_cur(BLK_STS_IOERR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) else if (fd_request->error_count == RECALIBRATE_ERRORS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) printk(KERN_WARNING "fd%d: recalibrating\n", SelectedDrive );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) if (SelectedDrive != -1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) SUD.track = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) #define SET_IRQ_HANDLER(proc) do { FloppyIRQHandler = (proc); } while(0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) /* ---------- Formatting ---------- */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) #define FILL(n,val) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) do { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) memset( p, val, n ); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) p += n; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) } while(0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) static int do_format(int drive, int type, struct atari_format_descr *desc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) struct request_queue *q = unit[drive].disk->queue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) unsigned char *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) int sect, nsect;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) blk_mq_freeze_queue(q);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) blk_mq_quiesce_queue(q);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) local_irq_save(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) stdma_lock(floppy_irq, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) atari_turnon_irq( IRQ_MFP_FDC ); /* should be already, just to be sure */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) local_irq_restore(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) if (type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) if (--type >= NUM_DISK_MINORS ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) minor2disktype[type].drive_types > DriveType) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) type = minor2disktype[type].index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) UDT = &atari_disk_type[type];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) if (!UDT || desc->track >= UDT->blocks/UDT->spt/2 || desc->head >= 2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) nsect = UDT->spt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) p = TrackBuffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) /* The track buffer is used for the raw track data, so its
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) contents become invalid! */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) BufferDrive = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) /* stop deselect timer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) del_timer( &motor_off_timer );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) FILL( 60 * (nsect / 9), 0x4e );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) for( sect = 0; sect < nsect; ++sect ) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) FILL( 12, 0 );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) FILL( 3, 0xf5 );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) *p++ = 0xfe;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) *p++ = desc->track;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) *p++ = desc->head;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) *p++ = (nsect + sect - desc->sect_offset) % nsect + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) *p++ = 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) *p++ = 0xf7;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) FILL( 22, 0x4e );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) FILL( 12, 0 );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) FILL( 3, 0xf5 );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) *p++ = 0xfb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) FILL( 512, 0xe5 );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) *p++ = 0xf7;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) FILL( 40, 0x4e );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) FILL( TrackBuffer+BUFFER_SIZE-p, 0x4e );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) IsFormatting = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) FormatError = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) ReqTrack = desc->track;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) ReqSide = desc->head;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) do_fd_action( drive );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) wait_for_completion(&format_wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) ret = FormatError ? -EIO : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) blk_mq_unquiesce_queue(q);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) blk_mq_unfreeze_queue(q);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) /* do_fd_action() is the general procedure for a fd request: All
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) * required parameter settings (drive select, side select, track
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) * position) are checked and set if needed. For each of these
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) * parameters and the actual reading or writing exist two functions:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) * one that starts the setting (or skips it if possible) and one
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) * callback for the "done" interrupt. Each done func calls the next
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) * set function to propagate the request down to fd_rwsec_done().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) static void do_fd_action( int drive )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) DPRINT(("do_fd_action\n"));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) if (UseTrackbuffer && !IsFormatting) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) repeat:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) if (IS_BUFFERED( drive, ReqSide, ReqTrack )) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) if (ReqCmd == READ) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) copy_buffer( SECTOR_BUFFER(ReqSector), ReqData );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) if (++ReqCnt < blk_rq_cur_sectors(fd_request)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) /* read next sector */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) setup_req_params( drive );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) goto repeat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) /* all sectors finished */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) fd_end_request_cur(BLK_STS_OK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) /* cmd == WRITE, pay attention to track buffer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) * consistency! */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) copy_buffer( ReqData, SECTOR_BUFFER(ReqSector) );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832) }
^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)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836) if (SelectedDrive != drive)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) fd_select_drive( drive );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) if (UD.track == -1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) fd_calibrate();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) else if (UD.track != ReqTrack << UDT->stretch)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) fd_seek();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) else if (IsFormatting)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) fd_writetrack();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) fd_rwsec();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) /* Seek to track 0 if the current track is unknown */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) static void fd_calibrate( void )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) if (SUD.track >= 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) fd_calibrate_done( 0 );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) if (ATARIHW_PRESENT(FDCSPEED))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) dma_wd.fdc_speed = 0; /* always seek with 8 Mhz */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) DPRINT(("fd_calibrate\n"));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) SET_IRQ_HANDLER( fd_calibrate_done );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) /* we can't verify, since the speed may be incorrect */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) FDC_WRITE( FDCREG_CMD, FDCCMD_RESTORE | SUD.steprate );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) NeedSeek = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) MotorOn = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) start_timeout();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) /* wait for IRQ */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) }
^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) static void fd_calibrate_done( int status )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) DPRINT(("fd_calibrate_done()\n"));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) stop_timeout();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) /* set the correct speed now */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) if (ATARIHW_PRESENT(FDCSPEED))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) dma_wd.fdc_speed = SUDT->fdc_speed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881) if (status & FDCSTAT_RECNF) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) printk(KERN_ERR "fd%d: restore failed\n", SelectedDrive );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) fd_error();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886) SUD.track = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) fd_seek();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) /* Seek the drive to the requested track. The drive must have been
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893) * calibrated at some point before this.
^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) static void fd_seek( void )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) if (SUD.track == ReqTrack << SUDT->stretch) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) fd_seek_done( 0 );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903) if (ATARIHW_PRESENT(FDCSPEED)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) dma_wd.fdc_speed = 0; /* always seek witch 8 Mhz */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) MFPDELAY();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) DPRINT(("fd_seek() to track %d\n",ReqTrack));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909) FDC_WRITE( FDCREG_DATA, ReqTrack << SUDT->stretch);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) udelay(25);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) SET_IRQ_HANDLER( fd_seek_done );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) FDC_WRITE( FDCREG_CMD, FDCCMD_SEEK | SUD.steprate );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914) MotorOn = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915) set_head_settle_flag();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) start_timeout();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917) /* wait for IRQ */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) static void fd_seek_done( int status )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923) DPRINT(("fd_seek_done()\n"));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) stop_timeout();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) /* set the correct speed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) if (ATARIHW_PRESENT(FDCSPEED))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) dma_wd.fdc_speed = SUDT->fdc_speed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) if (status & FDCSTAT_RECNF) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930) printk(KERN_ERR "fd%d: seek error (to track %d)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931) SelectedDrive, ReqTrack );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932) /* we don't know exactly which track we are on now! */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) SUD.track = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934) fd_error();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) SUD.track = ReqTrack << SUDT->stretch;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938) NeedSeek = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939) if (IsFormatting)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940) fd_writetrack();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942) fd_rwsec();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) /* This does the actual reading/writing after positioning the head
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948) * over the correct track.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951) static int MultReadInProgress = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954) static void fd_rwsec( void )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956) unsigned long paddr, flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) unsigned int rwflag, old_motoron;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) unsigned int track;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960) DPRINT(("fd_rwsec(), Sec=%d, Access=%c\n",ReqSector, ReqCmd == WRITE ? 'w' : 'r' ));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961) if (ReqCmd == WRITE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962) if (ATARIHW_PRESENT(EXTD_DMA)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) paddr = virt_to_phys(ReqData);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966) copy_buffer( ReqData, DMABuffer );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967) paddr = PhysDMABuffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969) dma_cache_maintenance( paddr, 512, 1 );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970) rwflag = 0x100;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973) if (read_track)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974) paddr = PhysTrackBuffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976) paddr = ATARIHW_PRESENT(EXTD_DMA) ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977) virt_to_phys(ReqData) : PhysDMABuffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978) rwflag = 0;
^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) fd_select_side( ReqSide );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983) /* Start sector of this operation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984) FDC_WRITE( FDCREG_SECTOR, read_track ? 1 : ReqSector );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985) MFPDELAY();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) /* Cheat for track if stretch != 0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987) if (SUDT->stretch) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988) track = FDC_READ( FDCREG_TRACK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989) MFPDELAY();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990) FDC_WRITE( FDCREG_TRACK, track >> SUDT->stretch);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992) udelay(25);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994) /* Setup DMA */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995) local_irq_save(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996) dma_wd.dma_lo = (unsigned char)paddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997) MFPDELAY();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998) paddr >>= 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999) dma_wd.dma_md = (unsigned char)paddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000) MFPDELAY();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001) paddr >>= 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002) if (ATARIHW_PRESENT(EXTD_DMA))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003) st_dma_ext_dmahi = (unsigned short)paddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005) dma_wd.dma_hi = (unsigned char)paddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006) MFPDELAY();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007) local_irq_restore(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009) /* Clear FIFO and switch DMA to correct mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010) dma_wd.dma_mode_status = 0x90 | rwflag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011) MFPDELAY();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1012) dma_wd.dma_mode_status = 0x90 | (rwflag ^ 0x100);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1013) MFPDELAY();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1014) dma_wd.dma_mode_status = 0x90 | rwflag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1015) MFPDELAY();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1016)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1017) /* How many sectors for DMA */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1018) dma_wd.fdc_acces_seccount = read_track ? SUDT->spt : 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1019)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1020) udelay(25);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1021)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1022) /* Start operation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1023) dma_wd.dma_mode_status = FDCSELREG_STP | rwflag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1024) udelay(25);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1025) SET_IRQ_HANDLER( fd_rwsec_done );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1026) dma_wd.fdc_acces_seccount =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1027) (get_head_settle_flag() |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1028) (rwflag ? FDCCMD_WRSEC : (FDCCMD_RDSEC | (read_track ? FDCCMDADD_M : 0))));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1029)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1030) old_motoron = MotorOn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1031) MotorOn = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1032) NeedSeek = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1033) /* wait for interrupt */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1034)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1035) if (read_track) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1036) /* If reading a whole track, wait about one disk rotation and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1037) * then check if all sectors are read. The FDC will even
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1038) * search for the first non-existent sector and need 1 sec to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1039) * recognise that it isn't present :-(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1040) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1041) MultReadInProgress = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1042) mod_timer(&readtrack_timer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1043) /* 1 rot. + 5 rot.s if motor was off */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1044) jiffies + HZ/5 + (old_motoron ? 0 : HZ));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1045) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1046) start_timeout();
^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)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1050) static void fd_readtrack_check(struct timer_list *unused)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1051) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1052) unsigned long flags, addr, addr2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1053)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1054) local_irq_save(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1055)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1056) if (!MultReadInProgress) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1057) /* This prevents a race condition that could arise if the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1058) * interrupt is triggered while the calling of this timer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1059) * callback function takes place. The IRQ function then has
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1060) * already cleared 'MultReadInProgress' when flow of control
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1061) * gets here.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1062) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1063) local_irq_restore(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1064) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1065) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1066)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1067) /* get the current DMA address */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1068) /* ++ f.a. read twice to avoid being fooled by switcher */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1069) addr = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1070) do {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1071) addr2 = addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1072) addr = dma_wd.dma_lo & 0xff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1073) MFPDELAY();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1074) addr |= (dma_wd.dma_md & 0xff) << 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1075) MFPDELAY();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1076) if (ATARIHW_PRESENT( EXTD_DMA ))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1077) addr |= (st_dma_ext_dmahi & 0xffff) << 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1078) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1079) addr |= (dma_wd.dma_hi & 0xff) << 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1080) MFPDELAY();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1081) } while(addr != addr2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1082)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1083) if (addr >= PhysTrackBuffer + SUDT->spt*512) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1084) /* already read enough data, force an FDC interrupt to stop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1085) * the read operation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1086) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1087) SET_IRQ_HANDLER( NULL );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1088) MultReadInProgress = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1089) local_irq_restore(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1090) DPRINT(("fd_readtrack_check(): done\n"));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1091) FDC_WRITE( FDCREG_CMD, FDCCMD_FORCI );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1092) udelay(25);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1093)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1094) /* No error until now -- the FDC would have interrupted
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1095) * otherwise!
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1096) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1097) fd_rwsec_done1(0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1098) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1099) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1100) /* not yet finished, wait another tenth rotation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1101) local_irq_restore(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1102) DPRINT(("fd_readtrack_check(): not yet finished\n"));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1103) mod_timer(&readtrack_timer, jiffies + HZ/5/10);
^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)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1108) static void fd_rwsec_done( int status )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1109) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1110) DPRINT(("fd_rwsec_done()\n"));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1112) if (read_track) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1113) del_timer(&readtrack_timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1114) if (!MultReadInProgress)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1115) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1116) MultReadInProgress = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1117) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1118) fd_rwsec_done1(status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1119) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1121) static void fd_rwsec_done1(int status)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1122) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1123) unsigned int track;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1125) stop_timeout();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1127) /* Correct the track if stretch != 0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1128) if (SUDT->stretch) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1129) track = FDC_READ( FDCREG_TRACK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1130) MFPDELAY();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1131) FDC_WRITE( FDCREG_TRACK, track << SUDT->stretch);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1132) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1134) if (!UseTrackbuffer) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1135) dma_wd.dma_mode_status = 0x90;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1136) MFPDELAY();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1137) if (!(dma_wd.dma_mode_status & 0x01)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1138) printk(KERN_ERR "fd%d: DMA error\n", SelectedDrive );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1139) goto err_end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1140) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1141) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1142) MFPDELAY();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1143)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1144) if (ReqCmd == WRITE && (status & FDCSTAT_WPROT)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1145) printk(KERN_NOTICE "fd%d: is write protected\n", SelectedDrive );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1146) goto err_end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1147) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1148) if ((status & FDCSTAT_RECNF) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1149) /* RECNF is no error after a multiple read when the FDC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1150) searched for a non-existent sector! */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1151) !(read_track && FDC_READ(FDCREG_SECTOR) > SUDT->spt)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1152) if (Probing) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1153) if (SUDT > atari_disk_type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1154) if (SUDT[-1].blocks > ReqBlock) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1155) /* try another disk type */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1156) SUDT--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1157) set_capacity(unit[SelectedDrive].disk,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1158) SUDT->blocks);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1159) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1160) Probing = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1161) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1162) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1163) if (SUD.flags & FTD_MSG)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1164) printk(KERN_INFO "fd%d: Auto-detected floppy type %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1165) SelectedDrive, SUDT->name );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1166) Probing=0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1167) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1168) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1169) /* record not found, but not probing. Maybe stretch wrong ? Restart probing */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1170) if (SUD.autoprobe) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1171) SUDT = atari_disk_type + StartDiskType[DriveType];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1172) set_capacity(unit[SelectedDrive].disk,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1173) SUDT->blocks);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1174) Probing = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1175) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1176) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1177) if (Probing) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1178) if (ATARIHW_PRESENT(FDCSPEED)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1179) dma_wd.fdc_speed = SUDT->fdc_speed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1180) MFPDELAY();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1181) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1182) setup_req_params( SelectedDrive );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1183) BufferDrive = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1184) do_fd_action( SelectedDrive );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1185) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1186) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1187)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1188) printk(KERN_ERR "fd%d: sector %d not found (side %d, track %d)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1189) SelectedDrive, FDC_READ (FDCREG_SECTOR), ReqSide, ReqTrack );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1190) goto err_end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1191) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1192) if (status & FDCSTAT_CRC) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1193) printk(KERN_ERR "fd%d: CRC error (side %d, track %d, sector %d)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1194) SelectedDrive, ReqSide, ReqTrack, FDC_READ (FDCREG_SECTOR) );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1195) goto err_end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1196) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1197) if (status & FDCSTAT_LOST) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1198) printk(KERN_ERR "fd%d: lost data (side %d, track %d, sector %d)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1199) SelectedDrive, ReqSide, ReqTrack, FDC_READ (FDCREG_SECTOR) );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1200) goto err_end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1201) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1202)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1203) Probing = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1204)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1205) if (ReqCmd == READ) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1206) if (!read_track) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1207) void *addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1208) addr = ATARIHW_PRESENT( EXTD_DMA ) ? ReqData : DMABuffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1209) dma_cache_maintenance( virt_to_phys(addr), 512, 0 );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1210) if (!ATARIHW_PRESENT( EXTD_DMA ))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1211) copy_buffer (addr, ReqData);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1212) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1213) dma_cache_maintenance( PhysTrackBuffer, MaxSectors[DriveType] * 512, 0 );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1214) BufferDrive = SelectedDrive;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1215) BufferSide = ReqSide;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1216) BufferTrack = ReqTrack;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1217) copy_buffer (SECTOR_BUFFER (ReqSector), ReqData);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1218) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1219) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1220)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1221) if (++ReqCnt < blk_rq_cur_sectors(fd_request)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1222) /* read next sector */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1223) setup_req_params( SelectedDrive );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1224) do_fd_action( SelectedDrive );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1225) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1226) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1227) /* all sectors finished */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1228) fd_end_request_cur(BLK_STS_OK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1229) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1230) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1232) err_end:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1233) BufferDrive = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1234) fd_error();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1235) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1236)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1237)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1238) static void fd_writetrack( void )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1239) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1240) unsigned long paddr, flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1241) unsigned int track;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1242)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1243) DPRINT(("fd_writetrack() Tr=%d Si=%d\n", ReqTrack, ReqSide ));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1244)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1245) paddr = PhysTrackBuffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1246) dma_cache_maintenance( paddr, BUFFER_SIZE, 1 );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1247)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1248) fd_select_side( ReqSide );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1249)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1250) /* Cheat for track if stretch != 0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1251) if (SUDT->stretch) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1252) track = FDC_READ( FDCREG_TRACK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1253) MFPDELAY();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1254) FDC_WRITE(FDCREG_TRACK,track >> SUDT->stretch);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1255) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1256) udelay(40);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1257)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1258) /* Setup DMA */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1259) local_irq_save(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1260) dma_wd.dma_lo = (unsigned char)paddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1261) MFPDELAY();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1262) paddr >>= 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1263) dma_wd.dma_md = (unsigned char)paddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1264) MFPDELAY();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1265) paddr >>= 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1266) if (ATARIHW_PRESENT( EXTD_DMA ))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1267) st_dma_ext_dmahi = (unsigned short)paddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1268) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1269) dma_wd.dma_hi = (unsigned char)paddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1270) MFPDELAY();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1271) local_irq_restore(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1272)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1273) /* Clear FIFO and switch DMA to correct mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1274) dma_wd.dma_mode_status = 0x190;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1275) MFPDELAY();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1276) dma_wd.dma_mode_status = 0x90;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1277) MFPDELAY();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1278) dma_wd.dma_mode_status = 0x190;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1279) MFPDELAY();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1280)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1281) /* How many sectors for DMA */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1282) dma_wd.fdc_acces_seccount = BUFFER_SIZE/512;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1283) udelay(40);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1284)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1285) /* Start operation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1286) dma_wd.dma_mode_status = FDCSELREG_STP | 0x100;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1287) udelay(40);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1288) SET_IRQ_HANDLER( fd_writetrack_done );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1289) dma_wd.fdc_acces_seccount = FDCCMD_WRTRA | get_head_settle_flag();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1290)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1291) MotorOn = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1292) start_timeout();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1293) /* wait for interrupt */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1294) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1295)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1296)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1297) static void fd_writetrack_done( int status )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1298) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1299) DPRINT(("fd_writetrack_done()\n"));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1300)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1301) stop_timeout();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1302)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1303) if (status & FDCSTAT_WPROT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1304) printk(KERN_NOTICE "fd%d: is write protected\n", SelectedDrive );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1305) goto err_end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1306) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1307) if (status & FDCSTAT_LOST) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1308) printk(KERN_ERR "fd%d: lost data (side %d, track %d)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1309) SelectedDrive, ReqSide, ReqTrack );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1310) goto err_end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1311) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1312)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1313) complete(&format_wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1314) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1315)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1316) err_end:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1317) fd_error();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1318) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1319)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1320) static void fd_times_out(struct timer_list *unused)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1321) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1322) atari_disable_irq( IRQ_MFP_FDC );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1323) if (!FloppyIRQHandler) goto end; /* int occurred after timer was fired, but
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1324) * before we came here... */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1325)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1326) SET_IRQ_HANDLER( NULL );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1327) /* If the timeout occurred while the readtrack_check timer was
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1328) * active, we need to cancel it, else bad things will happen */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1329) if (UseTrackbuffer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1330) del_timer( &readtrack_timer );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1331) FDC_WRITE( FDCREG_CMD, FDCCMD_FORCI );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1332) udelay( 25 );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1333)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1334) printk(KERN_ERR "floppy timeout\n" );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1335) fd_error();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1336) end:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1337) atari_enable_irq( IRQ_MFP_FDC );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1338) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1339)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1340)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1341) /* The (noop) seek operation here is needed to make the WP bit in the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1342) * FDC status register accessible for check_change. If the last disk
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1343) * operation would have been a RDSEC, this bit would always read as 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1344) * no matter what :-( To save time, the seek goes to the track we're
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1345) * already on.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1346) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1347)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1348) static void finish_fdc( void )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1349) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1350) if (!NeedSeek) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1351) finish_fdc_done( 0 );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1352) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1353) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1354) DPRINT(("finish_fdc: dummy seek started\n"));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1355) FDC_WRITE (FDCREG_DATA, SUD.track);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1356) SET_IRQ_HANDLER( finish_fdc_done );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1357) FDC_WRITE (FDCREG_CMD, FDCCMD_SEEK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1358) MotorOn = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1359) start_timeout();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1360) /* we must wait for the IRQ here, because the ST-DMA
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1361) is released immediately afterwards and the interrupt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1362) may be delivered to the wrong driver. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1363) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1364) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1365)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1366)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1367) static void finish_fdc_done( int dummy )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1368) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1369) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1370)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1371) DPRINT(("finish_fdc_done entered\n"));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1372) stop_timeout();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1373) NeedSeek = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1374)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1375) if (timer_pending(&fd_timer) && time_before(fd_timer.expires, jiffies + 5))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1376) /* If the check for a disk change is done too early after this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1377) * last seek command, the WP bit still reads wrong :-((
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1378) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1379) mod_timer(&fd_timer, jiffies + 5);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1380) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1381) start_check_change_timer();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1382) start_motor_off_timer();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1383)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1384) local_irq_save(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1385) stdma_release();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1386) local_irq_restore(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1387)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1388) DPRINT(("finish_fdc() finished\n"));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1389) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1390)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1391) /* The detection of disk changes is a dark chapter in Atari history :-(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1392) * Because the "Drive ready" signal isn't present in the Atari
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1393) * hardware, one has to rely on the "Write Protect". This works fine,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1394) * as long as no write protected disks are used. TOS solves this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1395) * problem by introducing tri-state logic ("maybe changed") and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1396) * looking at the serial number in block 0. This isn't possible for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1397) * Linux, since the floppy driver can't make assumptions about the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1398) * filesystem used on the disk and thus the contents of block 0. I've
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1399) * chosen the method to always say "The disk was changed" if it is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1400) * unsure whether it was. This implies that every open or mount
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1401) * invalidates the disk buffers if you work with write protected
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1402) * disks. But at least this is better than working with incorrect data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1403) * due to unrecognised disk changes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1404) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1405)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1406) static unsigned int floppy_check_events(struct gendisk *disk,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1407) unsigned int clearing)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1408) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1409) struct atari_floppy_struct *p = disk->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1410) unsigned int drive = p - unit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1411) if (test_bit (drive, &fake_change)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1412) /* simulated change (e.g. after formatting) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1413) return DISK_EVENT_MEDIA_CHANGE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1414) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1415) if (test_bit (drive, &changed_floppies)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1416) /* surely changed (the WP signal changed at least once) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1417) return DISK_EVENT_MEDIA_CHANGE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1418) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1419) if (UD.wpstat) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1420) /* WP is on -> could be changed: to be sure, buffers should be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1421) * invalidated...
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1422) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1423) return DISK_EVENT_MEDIA_CHANGE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1424) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1425)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1426) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1427) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1428)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1429) static int floppy_revalidate(struct gendisk *disk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1430) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1431) struct atari_floppy_struct *p = disk->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1432) unsigned int drive = p - unit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1433)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1434) if (test_bit(drive, &changed_floppies) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1435) test_bit(drive, &fake_change) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1436) p->disktype == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1437) if (UD.flags & FTD_MSG)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1438) printk(KERN_ERR "floppy: clear format %p!\n", UDT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1439) BufferDrive = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1440) clear_bit(drive, &fake_change);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1441) clear_bit(drive, &changed_floppies);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1442) /* MSch: clearing geometry makes sense only for autoprobe
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1443) formats, for 'permanent user-defined' parameter:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1444) restore default_params[] here if flagged valid! */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1445) if (default_params[drive].blocks == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1446) UDT = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1447) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1448) UDT = &default_params[drive];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1449) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1450) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1451) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1452)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1453)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1454) /* This sets up the global variables describing the current request. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1455)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1456) static void setup_req_params( int drive )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1457) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1458) int block = ReqBlock + ReqCnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1459)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1460) ReqTrack = block / UDT->spt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1461) ReqSector = block - ReqTrack * UDT->spt + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1462) ReqSide = ReqTrack & 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1463) ReqTrack >>= 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1464) ReqData = ReqBuffer + 512 * ReqCnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1465)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1466) if (UseTrackbuffer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1467) read_track = (ReqCmd == READ && fd_request->error_count == 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1468) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1469) read_track = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1470)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1471) DPRINT(("Request params: Si=%d Tr=%d Se=%d Data=%08lx\n",ReqSide,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1472) ReqTrack, ReqSector, (unsigned long)ReqData ));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1473) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1474)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1475) static void ataflop_commit_rqs(struct blk_mq_hw_ctx *hctx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1476) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1477) spin_lock_irq(&ataflop_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1478) atari_disable_irq(IRQ_MFP_FDC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1479) finish_fdc();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1480) atari_enable_irq(IRQ_MFP_FDC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1481) spin_unlock_irq(&ataflop_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1482) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1483)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1484) static blk_status_t ataflop_queue_rq(struct blk_mq_hw_ctx *hctx,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1485) const struct blk_mq_queue_data *bd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1486) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1487) struct atari_floppy_struct *floppy = bd->rq->rq_disk->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1488) int drive = floppy - unit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1489) int type = floppy->type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1490)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1491) spin_lock_irq(&ataflop_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1492) if (fd_request) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1493) spin_unlock_irq(&ataflop_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1494) return BLK_STS_DEV_RESOURCE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1495) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1496) if (!stdma_try_lock(floppy_irq, NULL)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1497) spin_unlock_irq(&ataflop_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1498) return BLK_STS_RESOURCE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1499) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1500) fd_request = bd->rq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1501) blk_mq_start_request(fd_request);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1502)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1503) atari_disable_irq( IRQ_MFP_FDC );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1504)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1505) IsFormatting = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1506)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1507) if (!UD.connected) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1508) /* drive not connected */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1509) printk(KERN_ERR "Unknown Device: fd%d\n", drive );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1510) fd_end_request_cur(BLK_STS_IOERR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1511) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1512) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1513)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1514) if (type == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1515) if (!UDT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1516) Probing = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1517) UDT = atari_disk_type + StartDiskType[DriveType];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1518) set_capacity(floppy->disk, UDT->blocks);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1519) UD.autoprobe = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1520) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1521) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1522) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1523) /* user supplied disk type */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1524) if (--type >= NUM_DISK_MINORS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1525) printk(KERN_WARNING "fd%d: invalid disk format", drive );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1526) fd_end_request_cur(BLK_STS_IOERR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1527) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1528) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1529) if (minor2disktype[type].drive_types > DriveType) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1530) printk(KERN_WARNING "fd%d: unsupported disk format", drive );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1531) fd_end_request_cur(BLK_STS_IOERR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1532) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1533) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1534) type = minor2disktype[type].index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1535) UDT = &atari_disk_type[type];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1536) set_capacity(floppy->disk, UDT->blocks);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1537) UD.autoprobe = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1538) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1539)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1540) /* stop deselect timer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1541) del_timer( &motor_off_timer );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1542)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1543) ReqCnt = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1544) ReqCmd = rq_data_dir(fd_request);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1545) ReqBlock = blk_rq_pos(fd_request);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1546) ReqBuffer = bio_data(fd_request->bio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1547) setup_req_params( drive );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1548) do_fd_action( drive );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1549)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1550) if (bd->last)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1551) finish_fdc();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1552) atari_enable_irq( IRQ_MFP_FDC );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1553)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1554) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1555) spin_unlock_irq(&ataflop_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1556) return BLK_STS_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1557) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1558)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1559) static int fd_locked_ioctl(struct block_device *bdev, fmode_t mode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1560) unsigned int cmd, unsigned long param)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1561) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1562) struct gendisk *disk = bdev->bd_disk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1563) struct atari_floppy_struct *floppy = disk->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1564) int drive = floppy - unit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1565) int type = floppy->type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1566) struct atari_format_descr fmt_desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1567) struct atari_disk_type *dtp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1568) struct floppy_struct getprm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1569) int settype;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1570) struct floppy_struct setprm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1571) void __user *argp = (void __user *)param;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1572)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1573) switch (cmd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1574) case FDGETPRM:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1575) if (type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1576) if (--type >= NUM_DISK_MINORS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1577) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1578) if (minor2disktype[type].drive_types > DriveType)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1579) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1580) type = minor2disktype[type].index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1581) dtp = &atari_disk_type[type];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1582) if (UD.flags & FTD_MSG)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1583) printk (KERN_ERR "floppy%d: found dtp %p name %s!\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1584) drive, dtp, dtp->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1585) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1586) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1587) if (!UDT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1588) return -ENXIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1589) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1590) dtp = UDT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1591) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1592) memset((void *)&getprm, 0, sizeof(getprm));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1593) getprm.size = dtp->blocks;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1594) getprm.sect = dtp->spt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1595) getprm.head = 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1596) getprm.track = dtp->blocks/dtp->spt/2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1597) getprm.stretch = dtp->stretch;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1598) if (copy_to_user(argp, &getprm, sizeof(getprm)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1599) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1600) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1601) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1602) switch (cmd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1603) case FDSETPRM:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1604) case FDDEFPRM:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1605) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1606) * MSch 7/96: simple 'set geometry' case: just set the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1607) * 'default' device params (minor == 0).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1608) * Currently, the drive geometry is cleared after each
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1609) * disk change and subsequent revalidate()! simple
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1610) * implementation of FDDEFPRM: save geometry from a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1611) * FDDEFPRM call and restore it in floppy_revalidate() !
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1612) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1613)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1614) /* get the parameters from user space */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1615) if (floppy->ref != 1 && floppy->ref != -1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1616) return -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1617) if (copy_from_user(&setprm, argp, sizeof(setprm)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1618) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1619) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1620) * first of all: check for floppy change and revalidate,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1621) * or the next access will revalidate - and clear UDT :-(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1622) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1623)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1624) if (floppy_check_events(disk, 0))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1625) floppy_revalidate(disk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1626)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1627) if (UD.flags & FTD_MSG)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1628) printk (KERN_INFO "floppy%d: setting size %d spt %d str %d!\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1629) drive, setprm.size, setprm.sect, setprm.stretch);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1630)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1631) /* what if type > 0 here? Overwrite specified entry ? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1632) if (type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1633) /* refuse to re-set a predefined type for now */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1634) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1635) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1636)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1637) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1638) * type == 0: first look for a matching entry in the type list,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1639) * and set the UD.disktype field to use the perdefined entry.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1640) * TODO: add user-defined format to head of autoprobe list ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1641) * Useful to include the user-type for future autodetection!
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1642) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1643)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1644) for (settype = 0; settype < NUM_DISK_MINORS; settype++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1645) int setidx = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1646) if (minor2disktype[settype].drive_types > DriveType) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1647) /* skip this one, invalid for drive ... */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1648) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1649) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1650) setidx = minor2disktype[settype].index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1651) dtp = &atari_disk_type[setidx];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1652)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1653) /* found matching entry ?? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1654) if ( dtp->blocks == setprm.size
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1655) && dtp->spt == setprm.sect
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1656) && dtp->stretch == setprm.stretch ) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1657) if (UD.flags & FTD_MSG)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1658) printk (KERN_INFO "floppy%d: setting %s %p!\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1659) drive, dtp->name, dtp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1660) UDT = dtp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1661) set_capacity(floppy->disk, UDT->blocks);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1662)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1663) if (cmd == FDDEFPRM) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1664) /* save settings as permanent default type */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1665) default_params[drive].name = dtp->name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1666) default_params[drive].spt = dtp->spt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1667) default_params[drive].blocks = dtp->blocks;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1668) default_params[drive].fdc_speed = dtp->fdc_speed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1669) default_params[drive].stretch = dtp->stretch;
^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) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1673) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1674)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1675) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1676)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1677) /* no matching disk type found above - setting user_params */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1678)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1679) if (cmd == FDDEFPRM) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1680) /* set permanent type */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1681) dtp = &default_params[drive];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1682) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1683) /* set user type (reset by disk change!) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1684) dtp = &user_params[drive];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1685)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1686) dtp->name = "user format";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1687) dtp->blocks = setprm.size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1688) dtp->spt = setprm.sect;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1689) if (setprm.sect > 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1690) dtp->fdc_speed = 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1691) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1692) dtp->fdc_speed = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1693) dtp->stretch = setprm.stretch;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1694)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1695) if (UD.flags & FTD_MSG)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1696) printk (KERN_INFO "floppy%d: blk %d spt %d str %d!\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1697) drive, dtp->blocks, dtp->spt, dtp->stretch);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1698)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1699) /* sanity check */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1700) if (setprm.track != dtp->blocks/dtp->spt/2 ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1701) setprm.head != 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1702) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1703)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1704) UDT = dtp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1705) set_capacity(floppy->disk, UDT->blocks);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1706)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1707) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1708) case FDMSGON:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1709) UD.flags |= FTD_MSG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1710) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1711) case FDMSGOFF:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1712) UD.flags &= ~FTD_MSG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1713) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1714) case FDSETEMSGTRESH:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1715) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1716) case FDFMTBEG:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1717) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1718) case FDFMTTRK:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1719) if (floppy->ref != 1 && floppy->ref != -1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1720) return -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1721) if (copy_from_user(&fmt_desc, argp, sizeof(fmt_desc)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1722) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1723) return do_format(drive, type, &fmt_desc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1724) case FDCLRPRM:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1725) UDT = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1726) /* MSch: invalidate default_params */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1727) default_params[drive].blocks = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1728) set_capacity(floppy->disk, MAX_DISK_SIZE * 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1729) fallthrough;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1730) case FDFMTEND:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1731) case FDFLUSH:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1732) /* invalidate the buffer track to force a reread */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1733) BufferDrive = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1734) set_bit(drive, &fake_change);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1735) if (bdev_check_media_change(bdev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1736) floppy_revalidate(bdev->bd_disk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1737) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1738) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1739) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1740) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1741) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1742)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1743) static int fd_ioctl(struct block_device *bdev, fmode_t mode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1744) unsigned int cmd, unsigned long arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1745) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1746) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1747)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1748) mutex_lock(&ataflop_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1749) ret = fd_locked_ioctl(bdev, mode, cmd, arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1750) mutex_unlock(&ataflop_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1751)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1752) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1753) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1754)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1755) /* Initialize the 'unit' variable for drive 'drive' */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1756)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1757) static void __init fd_probe( int drive )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1758) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1759) UD.connected = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1760) UDT = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1761)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1762) if (!fd_test_drive_present( drive ))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1763) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1764)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1765) UD.connected = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1766) UD.track = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1767) switch( UserSteprate[drive] ) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1768) case 2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1769) UD.steprate = FDCSTEP_2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1770) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1771) case 3:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1772) UD.steprate = FDCSTEP_3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1773) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1774) case 6:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1775) UD.steprate = FDCSTEP_6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1776) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1777) case 12:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1778) UD.steprate = FDCSTEP_12;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1779) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1780) default: /* should be -1 for "not set by user" */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1781) if (ATARIHW_PRESENT( FDCSPEED ) || MACH_IS_MEDUSA)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1782) UD.steprate = FDCSTEP_3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1783) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1784) UD.steprate = FDCSTEP_6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1785) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1786) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1787) MotorOn = 1; /* from probe restore operation! */
^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)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1791) /* This function tests the physical presence of a floppy drive (not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1792) * whether a disk is inserted). This is done by issuing a restore
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1793) * command, waiting max. 2 seconds (that should be enough to move the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1794) * head across the whole disk) and looking at the state of the "TR00"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1795) * signal. This should now be raised if there is a drive connected
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1796) * (and there is no hardware failure :-) Otherwise, the drive is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1797) * declared absent.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1798) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1799)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1800) static int __init fd_test_drive_present( int drive )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1801) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1802) unsigned long timeout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1803) unsigned char status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1804) int ok;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1805)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1806) if (drive >= (MACH_IS_FALCON ? 1 : 2)) return( 0 );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1807) fd_select_drive( drive );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1808)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1809) /* disable interrupt temporarily */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1810) atari_turnoff_irq( IRQ_MFP_FDC );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1811) FDC_WRITE (FDCREG_TRACK, 0xff00);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1812) FDC_WRITE( FDCREG_CMD, FDCCMD_RESTORE | FDCCMDADD_H | FDCSTEP_6 );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1813)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1814) timeout = jiffies + 2*HZ+HZ/2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1815) while (time_before(jiffies, timeout))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1816) if (!(st_mfp.par_dt_reg & 0x20))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1817) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1818)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1819) status = FDC_READ( FDCREG_STATUS );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1820) ok = (status & FDCSTAT_TR00) != 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1821)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1822) /* force interrupt to abort restore operation (FDC would try
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1823) * about 50 seconds!) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1824) FDC_WRITE( FDCREG_CMD, FDCCMD_FORCI );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1825) udelay(500);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1826) status = FDC_READ( FDCREG_STATUS );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1827) udelay(20);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1828)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1829) if (ok) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1830) /* dummy seek command to make WP bit accessible */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1831) FDC_WRITE( FDCREG_DATA, 0 );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1832) FDC_WRITE( FDCREG_CMD, FDCCMD_SEEK );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1833) while( st_mfp.par_dt_reg & 0x20 )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1834) ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1835) status = FDC_READ( FDCREG_STATUS );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1836) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1837)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1838) atari_turnon_irq( IRQ_MFP_FDC );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1839) return( ok );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1840) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1841)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1842)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1843) /* Look how many and which kind of drives are connected. If there are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1844) * floppies, additionally start the disk-change and motor-off timers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1845) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1846)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1847) static void __init config_types( void )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1848) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1849) int drive, cnt = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1850)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1851) /* for probing drives, set the FDC speed to 8 MHz */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1852) if (ATARIHW_PRESENT(FDCSPEED))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1853) dma_wd.fdc_speed = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1854)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1855) printk(KERN_INFO "Probing floppy drive(s):\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1856) for( drive = 0; drive < FD_MAX_UNITS; drive++ ) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1857) fd_probe( drive );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1858) if (UD.connected) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1859) printk(KERN_INFO "fd%d\n", drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1860) ++cnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1861) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1862) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1863)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1864) if (FDC_READ( FDCREG_STATUS ) & FDCSTAT_BUSY) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1865) /* If FDC is still busy from probing, give it another FORCI
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1866) * command to abort the operation. If this isn't done, the FDC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1867) * will interrupt later and its IRQ line stays low, because
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1868) * the status register isn't read. And this will block any
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1869) * interrupts on this IRQ line :-(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1870) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1871) FDC_WRITE( FDCREG_CMD, FDCCMD_FORCI );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1872) udelay(500);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1873) FDC_READ( FDCREG_STATUS );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1874) udelay(20);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1875) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1876)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1877) if (cnt > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1878) start_motor_off_timer();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1879) if (cnt == 1) fd_select_drive( 0 );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1880) start_check_change_timer();
^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)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1884) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1885) * floppy_open check for aliasing (/dev/fd0 can be the same as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1886) * /dev/PS0 etc), and disallows simultaneous access to the same
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1887) * drive with different device numbers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1888) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1889)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1890) static int floppy_open(struct block_device *bdev, fmode_t mode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1891) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1892) struct atari_floppy_struct *p = bdev->bd_disk->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1893) int type = MINOR(bdev->bd_dev) >> 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1894)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1895) DPRINT(("fd_open: type=%d\n",type));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1896) if (p->ref && p->type != type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1897) return -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1898)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1899) if (p->ref == -1 || (p->ref && mode & FMODE_EXCL))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1900) return -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1901)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1902) if (mode & FMODE_EXCL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1903) p->ref = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1904) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1905) p->ref++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1906)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1907) p->type = type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1908)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1909) if (mode & FMODE_NDELAY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1910) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1911)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1912) if (mode & (FMODE_READ|FMODE_WRITE)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1913) if (bdev_check_media_change(bdev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1914) floppy_revalidate(bdev->bd_disk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1915) if (mode & FMODE_WRITE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1916) if (p->wpstat) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1917) if (p->ref < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1918) p->ref = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1919) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1920) p->ref--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1921) return -EROFS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1922) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1923) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1924) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1925) return 0;
^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 int floppy_unlocked_open(struct block_device *bdev, fmode_t mode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1929) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1930) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1931)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1932) mutex_lock(&ataflop_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1933) ret = floppy_open(bdev, mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1934) mutex_unlock(&ataflop_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1935)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1936) return ret;
^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) static void floppy_release(struct gendisk *disk, fmode_t mode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1940) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1941) struct atari_floppy_struct *p = disk->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1942) mutex_lock(&ataflop_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1943) if (p->ref < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1944) p->ref = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1945) else if (!p->ref--) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1946) printk(KERN_ERR "floppy_release with fd_ref == 0");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1947) p->ref = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1948) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1949) mutex_unlock(&ataflop_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1950) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1951)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1952) static const struct block_device_operations floppy_fops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1953) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1954) .open = floppy_unlocked_open,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1955) .release = floppy_release,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1956) .ioctl = fd_ioctl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1957) .check_events = floppy_check_events,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1958) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1959)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1960) static const struct blk_mq_ops ataflop_mq_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1961) .queue_rq = ataflop_queue_rq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1962) .commit_rqs = ataflop_commit_rqs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1963) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1964)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1965) static struct kobject *floppy_find(dev_t dev, int *part, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1966) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1967) int drive = *part & 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1968) int type = *part >> 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1969) if (drive >= FD_MAX_UNITS || type > NUM_DISK_MINORS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1970) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1971) *part = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1972) return get_disk_and_module(unit[drive].disk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1973) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1974)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1975) static int __init atari_floppy_init (void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1976) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1977) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1978) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1979)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1980) if (!MACH_IS_ATARI)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1981) /* Amiga, Mac, ... don't have Atari-compatible floppy :-) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1982) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1983)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1984) if (register_blkdev(FLOPPY_MAJOR,"fd"))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1985) return -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1986)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1987) for (i = 0; i < FD_MAX_UNITS; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1988) unit[i].disk = alloc_disk(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1989) if (!unit[i].disk) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1990) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1991) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1992) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1993)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1994) unit[i].disk->queue = blk_mq_init_sq_queue(&unit[i].tag_set,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1995) &ataflop_mq_ops, 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1996) BLK_MQ_F_SHOULD_MERGE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1997) if (IS_ERR(unit[i].disk->queue)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1998) put_disk(unit[i].disk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1999) ret = PTR_ERR(unit[i].disk->queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2000) unit[i].disk->queue = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2001) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2002) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2003) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2004)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2005) if (UseTrackbuffer < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2006) /* not set by user -> use default: for now, we turn
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2007) track buffering off for all Medusas, though it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2008) could be used with ones that have a counter
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2009) card. But the test is too hard :-( */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2010) UseTrackbuffer = !MACH_IS_MEDUSA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2011)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2012) /* initialize variables */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2013) SelectedDrive = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2014) BufferDrive = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2015)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2016) DMABuffer = atari_stram_alloc(BUFFER_SIZE+512, "ataflop");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2017) if (!DMABuffer) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2018) printk(KERN_ERR "atari_floppy_init: cannot get dma buffer\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2019) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2020) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2021) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2022) TrackBuffer = DMABuffer + 512;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2023) PhysDMABuffer = atari_stram_to_phys(DMABuffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2024) PhysTrackBuffer = virt_to_phys(TrackBuffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2025) BufferDrive = BufferSide = BufferTrack = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2026)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2027) for (i = 0; i < FD_MAX_UNITS; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2028) unit[i].track = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2029) unit[i].flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2030) unit[i].disk->major = FLOPPY_MAJOR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2031) unit[i].disk->first_minor = i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2032) sprintf(unit[i].disk->disk_name, "fd%d", i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2033) unit[i].disk->fops = &floppy_fops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2034) unit[i].disk->events = DISK_EVENT_MEDIA_CHANGE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2035) unit[i].disk->private_data = &unit[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2036) set_capacity(unit[i].disk, MAX_DISK_SIZE * 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2037) add_disk(unit[i].disk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2038) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2039)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2040) blk_register_region(MKDEV(FLOPPY_MAJOR, 0), 256, THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2041) floppy_find, NULL, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2042)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2043) printk(KERN_INFO "Atari floppy driver: max. %cD, %strack buffering\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2044) DriveType == 0 ? 'D' : DriveType == 1 ? 'H' : 'E',
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2045) UseTrackbuffer ? "" : "no ");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2046) config_types();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2047)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2048) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2049)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2050) err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2051) while (--i >= 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2052) struct gendisk *disk = unit[i].disk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2053)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2054) blk_cleanup_queue(disk->queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2055) blk_mq_free_tag_set(&unit[i].tag_set);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2056) put_disk(unit[i].disk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2057) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2058)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2059) unregister_blkdev(FLOPPY_MAJOR, "fd");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2060) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2061) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2062)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2063) #ifndef MODULE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2064) static int __init atari_floppy_setup(char *str)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2065) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2066) int ints[3 + FD_MAX_UNITS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2067) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2068)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2069) if (!MACH_IS_ATARI)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2070) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2071)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2072) str = get_options(str, 3 + FD_MAX_UNITS, ints);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2073)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2074) if (ints[0] < 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2075) printk(KERN_ERR "ataflop_setup: no arguments!\n" );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2076) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2077) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2078) else if (ints[0] > 2+FD_MAX_UNITS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2079) printk(KERN_ERR "ataflop_setup: too many arguments\n" );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2080) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2081)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2082) if (ints[1] < 0 || ints[1] > 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2083) printk(KERN_ERR "ataflop_setup: bad drive type\n" );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2084) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2085) DriveType = ints[1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2086)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2087) if (ints[0] >= 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2088) UseTrackbuffer = (ints[2] > 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2089)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2090) for( i = 3; i <= ints[0] && i-3 < FD_MAX_UNITS; ++i ) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2091) if (ints[i] != 2 && ints[i] != 3 && ints[i] != 6 && ints[i] != 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2092) printk(KERN_ERR "ataflop_setup: bad steprate\n" );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2093) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2094) UserSteprate[i-3] = ints[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2095) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2096) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2097) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2098)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2099) __setup("floppy=", atari_floppy_setup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2100) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2102) static void __exit atari_floppy_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2103) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2104) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2105) blk_unregister_region(MKDEV(FLOPPY_MAJOR, 0), 256);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2106) for (i = 0; i < FD_MAX_UNITS; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2107) del_gendisk(unit[i].disk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2108) blk_cleanup_queue(unit[i].disk->queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2109) blk_mq_free_tag_set(&unit[i].tag_set);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2110) put_disk(unit[i].disk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2111) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2112) unregister_blkdev(FLOPPY_MAJOR, "fd");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2114) del_timer_sync(&fd_timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2115) atari_stram_free( DMABuffer );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2116) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2118) module_init(atari_floppy_init)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2119) module_exit(atari_floppy_exit)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2121) MODULE_LICENSE("GPL");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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