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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * drivers/block/ataflop.c | |
3 | * | |
4 | * Copyright (C) 1993 Greg Harp | |
5 | * Atari Support by Bjoern Brauel, Roman Hodek | |
6 | * | |
7 | * Big cleanup Sep 11..14 1994 Roman Hodek: | |
8 | * - Driver now works interrupt driven | |
9 | * - Support for two drives; should work, but I cannot test that :-( | |
10 | * - Reading is done in whole tracks and buffered to speed up things | |
11 | * - Disk change detection and drive deselecting after motor-off | |
12 | * similar to TOS | |
13 | * - Autodetection of disk format (DD/HD); untested yet, because I | |
14 | * don't have an HD drive :-( | |
15 | * | |
16 | * Fixes Nov 13 1994 Martin Schaller: | |
17 | * - Autodetection works now | |
18 | * - Support for 5 1/4'' disks | |
19 | * - Removed drive type (unknown on atari) | |
20 | * - Do seeks with 8 Mhz | |
21 | * | |
22 | * Changes by Andreas Schwab: | |
23 | * - After errors in multiple read mode try again reading single sectors | |
24 | * (Feb 1995): | |
25 | * - Clean up error handling | |
26 | * - Set blk_size for proper size checking | |
27 | * - Initialize track register when testing presence of floppy | |
28 | * - Implement some ioctl's | |
29 | * | |
30 | * Changes by Torsten Lang: | |
31 | * - When probing the floppies we should add the FDCCMDADD_H flag since | |
32 | * the FDC will otherwise wait forever when no disk is inserted... | |
33 | * | |
34 | * ++ Freddi Aschwanden (fa) 20.9.95 fixes for medusa: | |
35 | * - MFPDELAY() after each FDC access -> atari | |
36 | * - more/other disk formats | |
37 | * - DMA to the block buffer directly if we have a 32bit DMA | |
38 | * - for medusa, the step rate is always 3ms | |
39 | * - on medusa, use only cache_push() | |
40 | * Roman: | |
41 | * - Make disk format numbering independent from minors | |
42 | * - Let user set max. supported drive type (speeds up format | |
43 | * detection, saves buffer space) | |
44 | * | |
45 | * Roman 10/15/95: | |
46 | * - implement some more ioctls | |
47 | * - disk formatting | |
48 | * | |
49 | * Andreas 95/12/12: | |
50 | * - increase gap size at start of track for HD/ED disks | |
51 | * | |
52 | * Michael (MSch) 11/07/96: | |
53 | * - implemented FDSETPRM and FDDEFPRM ioctl | |
54 | * | |
55 | * Andreas (97/03/19): | |
56 | * - implemented missing BLK* ioctls | |
57 | * | |
58 | * Things left to do: | |
59 | * - Formatting | |
60 | * - Maybe a better strategy for disk change detection (does anyone | |
61 | * know one?) | |
62 | */ | |
63 | ||
64 | #include <linux/module.h> | |
65 | ||
66 | #include <linux/fd.h> | |
67 | #include <linux/delay.h> | |
68 | #include <linux/init.h> | |
6ec3938c | 69 | #include <linux/blk-mq.h> |
2a48fc0a | 70 | #include <linux/mutex.h> |
7b8a3d22 AB |
71 | #include <linux/completion.h> |
72 | #include <linux/wait.h> | |
1da177e4 | 73 | |
1da177e4 LT |
74 | #include <asm/atariints.h> |
75 | #include <asm/atari_stdma.h> | |
76 | #include <asm/atari_stram.h> | |
77 | ||
78 | #define FD_MAX_UNITS 2 | |
79 | ||
80 | #undef DEBUG | |
81 | ||
2a48fc0a | 82 | static DEFINE_MUTEX(ataflop_mutex); |
a336ca6f | 83 | static struct request *fd_request; |
1da177e4 | 84 | |
3e6b8c3c OS |
85 | /* |
86 | * WD1772 stuff | |
87 | */ | |
88 | ||
89 | /* register codes */ | |
90 | ||
91 | #define FDCSELREG_STP (0x80) /* command/status register */ | |
92 | #define FDCSELREG_TRA (0x82) /* track register */ | |
93 | #define FDCSELREG_SEC (0x84) /* sector register */ | |
94 | #define FDCSELREG_DTA (0x86) /* data register */ | |
95 | ||
96 | /* register names for FDC_READ/WRITE macros */ | |
97 | ||
98 | #define FDCREG_CMD 0 | |
99 | #define FDCREG_STATUS 0 | |
100 | #define FDCREG_TRACK 2 | |
101 | #define FDCREG_SECTOR 4 | |
102 | #define FDCREG_DATA 6 | |
103 | ||
104 | /* command opcodes */ | |
105 | ||
106 | #define FDCCMD_RESTORE (0x00) /* - */ | |
107 | #define FDCCMD_SEEK (0x10) /* | */ | |
108 | #define FDCCMD_STEP (0x20) /* | TYP 1 Commands */ | |
109 | #define FDCCMD_STIN (0x40) /* | */ | |
110 | #define FDCCMD_STOT (0x60) /* - */ | |
111 | #define FDCCMD_RDSEC (0x80) /* - TYP 2 Commands */ | |
112 | #define FDCCMD_WRSEC (0xa0) /* - " */ | |
113 | #define FDCCMD_RDADR (0xc0) /* - */ | |
114 | #define FDCCMD_RDTRA (0xe0) /* | TYP 3 Commands */ | |
115 | #define FDCCMD_WRTRA (0xf0) /* - */ | |
116 | #define FDCCMD_FORCI (0xd0) /* - TYP 4 Command */ | |
117 | ||
118 | /* command modifier bits */ | |
119 | ||
120 | #define FDCCMDADD_SR6 (0x00) /* step rate settings */ | |
121 | #define FDCCMDADD_SR12 (0x01) | |
122 | #define FDCCMDADD_SR2 (0x02) | |
123 | #define FDCCMDADD_SR3 (0x03) | |
124 | #define FDCCMDADD_V (0x04) /* verify */ | |
125 | #define FDCCMDADD_H (0x08) /* wait for spin-up */ | |
126 | #define FDCCMDADD_U (0x10) /* update track register */ | |
127 | #define FDCCMDADD_M (0x10) /* multiple sector access */ | |
128 | #define FDCCMDADD_E (0x04) /* head settling flag */ | |
129 | #define FDCCMDADD_P (0x02) /* precompensation off */ | |
130 | #define FDCCMDADD_A0 (0x01) /* DAM flag */ | |
131 | ||
132 | /* status register bits */ | |
133 | ||
134 | #define FDCSTAT_MOTORON (0x80) /* motor on */ | |
135 | #define FDCSTAT_WPROT (0x40) /* write protected (FDCCMD_WR*) */ | |
136 | #define FDCSTAT_SPINUP (0x20) /* motor speed stable (Type I) */ | |
137 | #define FDCSTAT_DELDAM (0x20) /* sector has deleted DAM (Type II+III) */ | |
138 | #define FDCSTAT_RECNF (0x10) /* record not found */ | |
139 | #define FDCSTAT_CRC (0x08) /* CRC error */ | |
140 | #define FDCSTAT_TR00 (0x04) /* Track 00 flag (Type I) */ | |
141 | #define FDCSTAT_LOST (0x04) /* Lost Data (Type II+III) */ | |
142 | #define FDCSTAT_IDX (0x02) /* Index status (Type I) */ | |
143 | #define FDCSTAT_DRQ (0x02) /* DRQ status (Type II+III) */ | |
144 | #define FDCSTAT_BUSY (0x01) /* FDC is busy */ | |
145 | ||
146 | ||
147 | /* PSG Port A Bit Nr 0 .. Side Sel .. 0 -> Side 1 1 -> Side 2 */ | |
148 | #define DSKSIDE (0x01) | |
149 | ||
150 | #define DSKDRVNONE (0x06) | |
151 | #define DSKDRV0 (0x02) | |
152 | #define DSKDRV1 (0x04) | |
153 | ||
154 | /* step rates */ | |
155 | #define FDCSTEP_6 0x00 | |
156 | #define FDCSTEP_12 0x01 | |
157 | #define FDCSTEP_2 0x02 | |
158 | #define FDCSTEP_3 0x03 | |
159 | ||
160 | struct atari_format_descr { | |
161 | int track; /* to be formatted */ | |
162 | int head; /* "" "" */ | |
163 | int sect_offset; /* offset of first sector */ | |
164 | }; | |
165 | ||
1da177e4 LT |
166 | /* Disk types: DD, HD, ED */ |
167 | static struct atari_disk_type { | |
168 | const char *name; | |
169 | unsigned spt; /* sectors per track */ | |
170 | unsigned blocks; /* total number of blocks */ | |
171 | unsigned fdc_speed; /* fdc_speed setting */ | |
172 | unsigned stretch; /* track doubling ? */ | |
5ceadd2a | 173 | } atari_disk_type[] = { |
1da177e4 LT |
174 | { "d360", 9, 720, 0, 0}, /* 0: 360kB diskette */ |
175 | { "D360", 9, 720, 0, 1}, /* 1: 360kb in 720k or 1.2MB drive */ | |
176 | { "D720", 9,1440, 0, 0}, /* 2: 720kb in 720k or 1.2MB drive */ | |
177 | { "D820", 10,1640, 0, 0}, /* 3: DD disk with 82 tracks/10 sectors */ | |
178 | /* formats above are probed for type DD */ | |
179 | #define MAX_TYPE_DD 3 | |
180 | { "h1200",15,2400, 3, 0}, /* 4: 1.2MB diskette */ | |
181 | { "H1440",18,2880, 3, 0}, /* 5: 1.4 MB diskette (HD) */ | |
182 | { "H1640",20,3280, 3, 0}, /* 6: 1.64MB diskette (fat HD) 82 tr 20 sec */ | |
183 | /* formats above are probed for types DD and HD */ | |
184 | #define MAX_TYPE_HD 6 | |
185 | { "E2880",36,5760, 3, 0}, /* 7: 2.8 MB diskette (ED) */ | |
186 | { "E3280",40,6560, 3, 0}, /* 8: 3.2 MB diskette (fat ED) 82 tr 40 sec */ | |
187 | /* formats above are probed for types DD, HD and ED */ | |
188 | #define MAX_TYPE_ED 8 | |
189 | /* types below are never autoprobed */ | |
190 | { "H1680",21,3360, 3, 0}, /* 9: 1.68MB diskette (fat HD) 80 tr 21 sec */ | |
191 | { "h410",10,820, 0, 1}, /* 10: 410k diskette 41 tr 10 sec, stretch */ | |
192 | { "h1476",18,2952, 3, 0}, /* 11: 1.48MB diskette 82 tr 18 sec */ | |
193 | { "H1722",21,3444, 3, 0}, /* 12: 1.72MB diskette 82 tr 21 sec */ | |
194 | { "h420",10,840, 0, 1}, /* 13: 420k diskette 42 tr 10 sec, stretch */ | |
195 | { "H830",10,1660, 0, 0}, /* 14: 820k diskette 83 tr 10 sec */ | |
196 | { "h1494",18,2952, 3, 0}, /* 15: 1.49MB diskette 83 tr 18 sec */ | |
197 | { "H1743",21,3486, 3, 0}, /* 16: 1.74MB diskette 83 tr 21 sec */ | |
198 | { "h880",11,1760, 0, 0}, /* 17: 880k diskette 80 tr 11 sec */ | |
199 | { "D1040",13,2080, 0, 0}, /* 18: 1.04MB diskette 80 tr 13 sec */ | |
200 | { "D1120",14,2240, 0, 0}, /* 19: 1.12MB diskette 80 tr 14 sec */ | |
201 | { "h1600",20,3200, 3, 0}, /* 20: 1.60MB diskette 80 tr 20 sec */ | |
202 | { "H1760",22,3520, 3, 0}, /* 21: 1.76MB diskette 80 tr 22 sec */ | |
203 | { "H1920",24,3840, 3, 0}, /* 22: 1.92MB diskette 80 tr 24 sec */ | |
204 | { "E3200",40,6400, 3, 0}, /* 23: 3.2MB diskette 80 tr 40 sec */ | |
205 | { "E3520",44,7040, 3, 0}, /* 24: 3.52MB diskette 80 tr 44 sec */ | |
206 | { "E3840",48,7680, 3, 0}, /* 25: 3.84MB diskette 80 tr 48 sec */ | |
207 | { "H1840",23,3680, 3, 0}, /* 26: 1.84MB diskette 80 tr 23 sec */ | |
208 | { "D800",10,1600, 0, 0}, /* 27: 800k diskette 80 tr 10 sec */ | |
209 | }; | |
210 | ||
211 | static int StartDiskType[] = { | |
212 | MAX_TYPE_DD, | |
213 | MAX_TYPE_HD, | |
214 | MAX_TYPE_ED | |
215 | }; | |
216 | ||
217 | #define TYPE_DD 0 | |
218 | #define TYPE_HD 1 | |
219 | #define TYPE_ED 2 | |
220 | ||
221 | static int DriveType = TYPE_HD; | |
222 | ||
223 | static DEFINE_SPINLOCK(ataflop_lock); | |
224 | ||
225 | /* Array for translating minors into disk formats */ | |
226 | static struct { | |
227 | int index; | |
228 | unsigned drive_types; | |
229 | } minor2disktype[] = { | |
230 | { 0, TYPE_DD }, /* 1: d360 */ | |
231 | { 4, TYPE_HD }, /* 2: h1200 */ | |
232 | { 1, TYPE_DD }, /* 3: D360 */ | |
233 | { 2, TYPE_DD }, /* 4: D720 */ | |
234 | { 1, TYPE_DD }, /* 5: h360 = D360 */ | |
235 | { 2, TYPE_DD }, /* 6: h720 = D720 */ | |
236 | { 5, TYPE_HD }, /* 7: H1440 */ | |
237 | { 7, TYPE_ED }, /* 8: E2880 */ | |
238 | /* some PC formats :-) */ | |
239 | { 8, TYPE_ED }, /* 9: E3280 <- was "CompaQ" == E2880 for PC */ | |
240 | { 5, TYPE_HD }, /* 10: h1440 = H1440 */ | |
241 | { 9, TYPE_HD }, /* 11: H1680 */ | |
242 | { 10, TYPE_DD }, /* 12: h410 */ | |
243 | { 3, TYPE_DD }, /* 13: H820 <- == D820, 82x10 */ | |
244 | { 11, TYPE_HD }, /* 14: h1476 */ | |
245 | { 12, TYPE_HD }, /* 15: H1722 */ | |
246 | { 13, TYPE_DD }, /* 16: h420 */ | |
247 | { 14, TYPE_DD }, /* 17: H830 */ | |
248 | { 15, TYPE_HD }, /* 18: h1494 */ | |
249 | { 16, TYPE_HD }, /* 19: H1743 */ | |
250 | { 17, TYPE_DD }, /* 20: h880 */ | |
251 | { 18, TYPE_DD }, /* 21: D1040 */ | |
252 | { 19, TYPE_DD }, /* 22: D1120 */ | |
253 | { 20, TYPE_HD }, /* 23: h1600 */ | |
254 | { 21, TYPE_HD }, /* 24: H1760 */ | |
255 | { 22, TYPE_HD }, /* 25: H1920 */ | |
256 | { 23, TYPE_ED }, /* 26: E3200 */ | |
257 | { 24, TYPE_ED }, /* 27: E3520 */ | |
258 | { 25, TYPE_ED }, /* 28: E3840 */ | |
259 | { 26, TYPE_HD }, /* 29: H1840 */ | |
260 | { 27, TYPE_DD }, /* 30: D800 */ | |
261 | { 6, TYPE_HD }, /* 31: H1640 <- was H1600 == h1600 for PC */ | |
262 | }; | |
263 | ||
945f390f | 264 | #define NUM_DISK_MINORS ARRAY_SIZE(minor2disktype) |
1da177e4 LT |
265 | |
266 | /* | |
267 | * Maximum disk size (in kilobytes). This default is used whenever the | |
268 | * current disk size is unknown. | |
269 | */ | |
270 | #define MAX_DISK_SIZE 3280 | |
271 | ||
272 | /* | |
273 | * MSch: User-provided type information. 'drive' points to | |
274 | * the respective entry of this array. Set by FDSETPRM ioctls. | |
275 | */ | |
276 | static struct atari_disk_type user_params[FD_MAX_UNITS]; | |
277 | ||
278 | /* | |
279 | * User-provided permanent type information. 'drive' points to | |
280 | * the respective entry of this array. Set by FDDEFPRM ioctls, | |
281 | * restored upon disk change by floppy_revalidate() if valid (as seen by | |
282 | * default_params[].blocks > 0 - a bit in unit[].flags might be used for this?) | |
283 | */ | |
284 | static struct atari_disk_type default_params[FD_MAX_UNITS]; | |
285 | ||
286 | /* current info on each unit */ | |
287 | static struct atari_floppy_struct { | |
288 | int connected; /* !=0 : drive is connected */ | |
289 | int autoprobe; /* !=0 : do autoprobe */ | |
290 | ||
291 | struct atari_disk_type *disktype; /* current type of disk */ | |
292 | ||
293 | int track; /* current head position or -1 if | |
294 | unknown */ | |
295 | unsigned int steprate; /* steprate setting */ | |
296 | unsigned int wpstat; /* current state of WP signal (for | |
297 | disk change detection) */ | |
298 | int flags; /* flags */ | |
299 | struct gendisk *disk; | |
300 | int ref; | |
301 | int type; | |
6ec3938c | 302 | struct blk_mq_tag_set tag_set; |
1da177e4 LT |
303 | } unit[FD_MAX_UNITS]; |
304 | ||
305 | #define UD unit[drive] | |
306 | #define UDT unit[drive].disktype | |
307 | #define SUD unit[SelectedDrive] | |
308 | #define SUDT unit[SelectedDrive].disktype | |
309 | ||
310 | ||
311 | #define FDC_READ(reg) ({ \ | |
312 | /* unsigned long __flags; */ \ | |
313 | unsigned short __val; \ | |
314 | /* local_irq_save(__flags); */ \ | |
315 | dma_wd.dma_mode_status = 0x80 | (reg); \ | |
316 | udelay(25); \ | |
317 | __val = dma_wd.fdc_acces_seccount; \ | |
318 | MFPDELAY(); \ | |
319 | /* local_irq_restore(__flags); */ \ | |
320 | __val & 0xff; \ | |
321 | }) | |
322 | ||
323 | #define FDC_WRITE(reg,val) \ | |
324 | do { \ | |
325 | /* unsigned long __flags; */ \ | |
326 | /* local_irq_save(__flags); */ \ | |
327 | dma_wd.dma_mode_status = 0x80 | (reg); \ | |
328 | udelay(25); \ | |
329 | dma_wd.fdc_acces_seccount = (val); \ | |
330 | MFPDELAY(); \ | |
331 | /* local_irq_restore(__flags); */ \ | |
332 | } while(0) | |
333 | ||
334 | ||
335 | /* Buffering variables: | |
336 | * First, there is a DMA buffer in ST-RAM that is used for floppy DMA | |
337 | * operations. Second, a track buffer is used to cache a whole track | |
338 | * of the disk to save read operations. These are two separate buffers | |
339 | * because that allows write operations without clearing the track buffer. | |
340 | */ | |
341 | ||
342 | static int MaxSectors[] = { | |
343 | 11, 22, 44 | |
344 | }; | |
345 | static int BufferSize[] = { | |
346 | 15*512, 30*512, 60*512 | |
347 | }; | |
348 | ||
349 | #define BUFFER_SIZE (BufferSize[DriveType]) | |
350 | ||
351 | unsigned char *DMABuffer; /* buffer for writes */ | |
352 | static unsigned long PhysDMABuffer; /* physical address */ | |
353 | ||
354 | static int UseTrackbuffer = -1; /* Do track buffering? */ | |
8d3b33f6 | 355 | module_param(UseTrackbuffer, int, 0); |
1da177e4 LT |
356 | |
357 | unsigned char *TrackBuffer; /* buffer for reads */ | |
358 | static unsigned long PhysTrackBuffer; /* physical address */ | |
359 | static int BufferDrive, BufferSide, BufferTrack; | |
360 | static int read_track; /* non-zero if we are reading whole tracks */ | |
361 | ||
362 | #define SECTOR_BUFFER(sec) (TrackBuffer + ((sec)-1)*512) | |
363 | #define IS_BUFFERED(drive,side,track) \ | |
364 | (BufferDrive == (drive) && BufferSide == (side) && BufferTrack == (track)) | |
365 | ||
366 | /* | |
367 | * These are global variables, as that's the easiest way to give | |
368 | * information to interrupts. They are the data used for the current | |
369 | * request. | |
370 | */ | |
371 | static int SelectedDrive = 0; | |
372 | static int ReqCmd, ReqBlock; | |
373 | static int ReqSide, ReqTrack, ReqSector, ReqCnt; | |
374 | static int HeadSettleFlag = 0; | |
375 | static unsigned char *ReqData, *ReqBuffer; | |
376 | static int MotorOn = 0, MotorOffTrys; | |
377 | static int IsFormatting = 0, FormatError; | |
378 | ||
379 | static int UserSteprate[FD_MAX_UNITS] = { -1, -1 }; | |
8d3b33f6 | 380 | module_param_array(UserSteprate, int, NULL, 0); |
1da177e4 | 381 | |
7b8a3d22 | 382 | static DECLARE_COMPLETION(format_wait); |
1da177e4 LT |
383 | |
384 | static unsigned long changed_floppies = 0xff, fake_change = 0; | |
385 | #define CHECK_CHANGE_DELAY HZ/2 | |
386 | ||
387 | #define FD_MOTOR_OFF_DELAY (3*HZ) | |
388 | #define FD_MOTOR_OFF_MAXTRY (10*20) | |
389 | ||
390 | #define FLOPPY_TIMEOUT (6*HZ) | |
391 | #define RECALIBRATE_ERRORS 4 /* After this many errors the drive | |
392 | * will be recalibrated. */ | |
393 | #define MAX_ERRORS 8 /* After this many errors the driver | |
394 | * will give up. */ | |
395 | ||
396 | ||
397 | /* | |
398 | * The driver is trying to determine the correct media format | |
399 | * while Probing is set. fd_rwsec_done() clears it after a | |
400 | * successful access. | |
401 | */ | |
402 | static int Probing = 0; | |
403 | ||
404 | /* This flag is set when a dummy seek is necessary to make the WP | |
405 | * status bit accessible. | |
406 | */ | |
407 | static int NeedSeek = 0; | |
408 | ||
409 | ||
410 | #ifdef DEBUG | |
411 | #define DPRINT(a) printk a | |
412 | #else | |
413 | #define DPRINT(a) | |
414 | #endif | |
415 | ||
416 | /***************************** Prototypes *****************************/ | |
417 | ||
418 | static void fd_select_side( int side ); | |
419 | static void fd_select_drive( int drive ); | |
420 | static void fd_deselect( void ); | |
24ed960a KC |
421 | static void fd_motor_off_timer(struct timer_list *unused); |
422 | static void check_change(struct timer_list *unused); | |
7d12e780 | 423 | static irqreturn_t floppy_irq (int irq, void *dummy); |
1da177e4 LT |
424 | static void fd_error( void ); |
425 | static int do_format(int drive, int type, struct atari_format_descr *desc); | |
426 | static void do_fd_action( int drive ); | |
427 | static void fd_calibrate( void ); | |
428 | static void fd_calibrate_done( int status ); | |
429 | static void fd_seek( void ); | |
430 | static void fd_seek_done( int status ); | |
431 | static void fd_rwsec( void ); | |
24ed960a | 432 | static void fd_readtrack_check(struct timer_list *unused); |
1da177e4 LT |
433 | static void fd_rwsec_done( int status ); |
434 | static void fd_rwsec_done1(int status); | |
435 | static void fd_writetrack( void ); | |
436 | static void fd_writetrack_done( int status ); | |
24ed960a | 437 | static void fd_times_out(struct timer_list *unused); |
1da177e4 LT |
438 | static void finish_fdc( void ); |
439 | static void finish_fdc_done( int dummy ); | |
440 | static void setup_req_params( int drive ); | |
8a6cfeb6 | 441 | static int fd_locked_ioctl(struct block_device *bdev, fmode_t mode, unsigned int |
1da177e4 LT |
442 | cmd, unsigned long param); |
443 | static void fd_probe( int drive ); | |
444 | static int fd_test_drive_present( int drive ); | |
445 | static void config_types( void ); | |
60ad2340 | 446 | static int floppy_open(struct block_device *bdev, fmode_t mode); |
db2a144b | 447 | static void floppy_release(struct gendisk *disk, fmode_t mode); |
1da177e4 LT |
448 | |
449 | /************************* End of Prototypes **************************/ | |
450 | ||
1d27e3e2 KC |
451 | static DEFINE_TIMER(motor_off_timer, fd_motor_off_timer); |
452 | static DEFINE_TIMER(readtrack_timer, fd_readtrack_check); | |
453 | static DEFINE_TIMER(timeout_timer, fd_times_out); | |
454 | static DEFINE_TIMER(fd_timer, check_change); | |
1da177e4 | 455 | |
2a842aca | 456 | static void fd_end_request_cur(blk_status_t err) |
a336ca6f | 457 | { |
6ec3938c OS |
458 | if (!blk_update_request(fd_request, err, |
459 | blk_rq_cur_bytes(fd_request))) { | |
460 | __blk_mq_end_request(fd_request, err); | |
a336ca6f | 461 | fd_request = NULL; |
6ec3938c | 462 | } |
a336ca6f TH |
463 | } |
464 | ||
1da177e4 LT |
465 | static inline void start_motor_off_timer(void) |
466 | { | |
467 | mod_timer(&motor_off_timer, jiffies + FD_MOTOR_OFF_DELAY); | |
468 | MotorOffTrys = 0; | |
469 | } | |
470 | ||
471 | static inline void start_check_change_timer( void ) | |
472 | { | |
473 | mod_timer(&fd_timer, jiffies + CHECK_CHANGE_DELAY); | |
474 | } | |
475 | ||
476 | static inline void start_timeout(void) | |
477 | { | |
478 | mod_timer(&timeout_timer, jiffies + FLOPPY_TIMEOUT); | |
479 | } | |
480 | ||
481 | static inline void stop_timeout(void) | |
482 | { | |
483 | del_timer(&timeout_timer); | |
484 | } | |
485 | ||
486 | /* Select the side to use. */ | |
487 | ||
488 | static void fd_select_side( int side ) | |
489 | { | |
490 | unsigned long flags; | |
491 | ||
492 | /* protect against various other ints mucking around with the PSG */ | |
493 | local_irq_save(flags); | |
494 | ||
495 | sound_ym.rd_data_reg_sel = 14; /* Select PSG Port A */ | |
496 | sound_ym.wd_data = (side == 0) ? sound_ym.rd_data_reg_sel | 0x01 : | |
497 | sound_ym.rd_data_reg_sel & 0xfe; | |
498 | ||
499 | local_irq_restore(flags); | |
500 | } | |
501 | ||
502 | ||
503 | /* Select a drive, update the FDC's track register and set the correct | |
504 | * clock speed for this disk's type. | |
505 | */ | |
506 | ||
507 | static void fd_select_drive( int drive ) | |
508 | { | |
509 | unsigned long flags; | |
510 | unsigned char tmp; | |
511 | ||
512 | if (drive == SelectedDrive) | |
513 | return; | |
514 | ||
515 | /* protect against various other ints mucking around with the PSG */ | |
516 | local_irq_save(flags); | |
517 | sound_ym.rd_data_reg_sel = 14; /* Select PSG Port A */ | |
518 | tmp = sound_ym.rd_data_reg_sel; | |
519 | sound_ym.wd_data = (tmp | DSKDRVNONE) & ~(drive == 0 ? DSKDRV0 : DSKDRV1); | |
520 | atari_dont_touch_floppy_select = 1; | |
521 | local_irq_restore(flags); | |
522 | ||
523 | /* restore track register to saved value */ | |
524 | FDC_WRITE( FDCREG_TRACK, UD.track ); | |
525 | udelay(25); | |
526 | ||
527 | /* select 8/16 MHz */ | |
528 | if (UDT) | |
529 | if (ATARIHW_PRESENT(FDCSPEED)) | |
530 | dma_wd.fdc_speed = UDT->fdc_speed; | |
531 | ||
532 | SelectedDrive = drive; | |
533 | } | |
534 | ||
535 | ||
536 | /* Deselect both drives. */ | |
537 | ||
538 | static void fd_deselect( void ) | |
539 | { | |
540 | unsigned long flags; | |
541 | ||
542 | /* protect against various other ints mucking around with the PSG */ | |
543 | local_irq_save(flags); | |
544 | atari_dont_touch_floppy_select = 0; | |
545 | sound_ym.rd_data_reg_sel=14; /* Select PSG Port A */ | |
546 | sound_ym.wd_data = (sound_ym.rd_data_reg_sel | | |
547 | (MACH_IS_FALCON ? 3 : 7)); /* no drives selected */ | |
548 | /* On Falcon, the drive B select line is used on the printer port, so | |
549 | * leave it alone... */ | |
550 | SelectedDrive = -1; | |
551 | local_irq_restore(flags); | |
552 | } | |
553 | ||
554 | ||
555 | /* This timer function deselects the drives when the FDC switched the | |
556 | * motor off. The deselection cannot happen earlier because the FDC | |
557 | * counts the index signals, which arrive only if one drive is selected. | |
558 | */ | |
559 | ||
24ed960a | 560 | static void fd_motor_off_timer(struct timer_list *unused) |
1da177e4 LT |
561 | { |
562 | unsigned char status; | |
563 | ||
564 | if (SelectedDrive < 0) | |
565 | /* no drive selected, needn't deselect anyone */ | |
566 | return; | |
567 | ||
568 | if (stdma_islocked()) | |
569 | goto retry; | |
570 | ||
571 | status = FDC_READ( FDCREG_STATUS ); | |
572 | ||
573 | if (!(status & 0x80)) { | |
574 | /* motor already turned off by FDC -> deselect drives */ | |
575 | MotorOn = 0; | |
576 | fd_deselect(); | |
577 | return; | |
578 | } | |
579 | /* not yet off, try again */ | |
580 | ||
581 | retry: | |
582 | /* Test again later; if tested too often, it seems there is no disk | |
583 | * in the drive and the FDC will leave the motor on forever (or, | |
584 | * at least until a disk is inserted). So we'll test only twice | |
585 | * per second from then on... | |
586 | */ | |
587 | mod_timer(&motor_off_timer, | |
588 | jiffies + (MotorOffTrys++ < FD_MOTOR_OFF_MAXTRY ? HZ/20 : HZ/2)); | |
589 | } | |
590 | ||
591 | ||
592 | /* This function is repeatedly called to detect disk changes (as good | |
593 | * as possible) and keep track of the current state of the write protection. | |
594 | */ | |
595 | ||
24ed960a | 596 | static void check_change(struct timer_list *unused) |
1da177e4 LT |
597 | { |
598 | static int drive = 0; | |
599 | ||
600 | unsigned long flags; | |
601 | unsigned char old_porta; | |
602 | int stat; | |
603 | ||
604 | if (++drive > 1 || !UD.connected) | |
605 | drive = 0; | |
606 | ||
607 | /* protect against various other ints mucking around with the PSG */ | |
608 | local_irq_save(flags); | |
609 | ||
610 | if (!stdma_islocked()) { | |
611 | sound_ym.rd_data_reg_sel = 14; | |
612 | old_porta = sound_ym.rd_data_reg_sel; | |
613 | sound_ym.wd_data = (old_porta | DSKDRVNONE) & | |
614 | ~(drive == 0 ? DSKDRV0 : DSKDRV1); | |
615 | stat = !!(FDC_READ( FDCREG_STATUS ) & FDCSTAT_WPROT); | |
616 | sound_ym.wd_data = old_porta; | |
617 | ||
618 | if (stat != UD.wpstat) { | |
619 | DPRINT(( "wpstat[%d] = %d\n", drive, stat )); | |
620 | UD.wpstat = stat; | |
621 | set_bit (drive, &changed_floppies); | |
622 | } | |
623 | } | |
624 | local_irq_restore(flags); | |
625 | ||
626 | start_check_change_timer(); | |
627 | } | |
628 | ||
629 | ||
630 | /* Handling of the Head Settling Flag: This flag should be set after each | |
631 | * seek operation, because we don't use seeks with verify. | |
632 | */ | |
633 | ||
634 | static inline void set_head_settle_flag(void) | |
635 | { | |
636 | HeadSettleFlag = FDCCMDADD_E; | |
637 | } | |
638 | ||
639 | static inline int get_head_settle_flag(void) | |
640 | { | |
641 | int tmp = HeadSettleFlag; | |
642 | HeadSettleFlag = 0; | |
643 | return( tmp ); | |
644 | } | |
645 | ||
646 | static inline void copy_buffer(void *from, void *to) | |
647 | { | |
648 | ulong *p1 = (ulong *)from, *p2 = (ulong *)to; | |
649 | int cnt; | |
650 | ||
651 | for (cnt = 512/4; cnt; cnt--) | |
652 | *p2++ = *p1++; | |
653 | } | |
654 | ||
655 | ||
656 | ||
657 | ||
658 | /* General Interrupt Handling */ | |
659 | ||
660 | static void (*FloppyIRQHandler)( int status ) = NULL; | |
661 | ||
7d12e780 | 662 | static irqreturn_t floppy_irq (int irq, void *dummy) |
1da177e4 LT |
663 | { |
664 | unsigned char status; | |
665 | void (*handler)( int ); | |
666 | ||
667 | handler = xchg(&FloppyIRQHandler, NULL); | |
668 | ||
669 | if (handler) { | |
670 | nop(); | |
671 | status = FDC_READ( FDCREG_STATUS ); | |
672 | DPRINT(("FDC irq, status = %02x handler = %08lx\n",status,(unsigned long)handler)); | |
673 | handler( status ); | |
674 | } | |
675 | else { | |
676 | DPRINT(("FDC irq, no handler\n")); | |
677 | } | |
678 | return IRQ_HANDLED; | |
679 | } | |
680 | ||
681 | ||
682 | /* Error handling: If some error happened, retry some times, then | |
683 | * recalibrate, then try again, and fail after MAX_ERRORS. | |
684 | */ | |
685 | ||
686 | static void fd_error( void ) | |
687 | { | |
688 | if (IsFormatting) { | |
689 | IsFormatting = 0; | |
690 | FormatError = 1; | |
7b8a3d22 | 691 | complete(&format_wait); |
1da177e4 LT |
692 | return; |
693 | } | |
694 | ||
a336ca6f | 695 | if (!fd_request) |
1da177e4 LT |
696 | return; |
697 | ||
c8e90782 CH |
698 | fd_request->error_count++; |
699 | if (fd_request->error_count >= MAX_ERRORS) { | |
1da177e4 | 700 | printk(KERN_ERR "fd%d: too many errors.\n", SelectedDrive ); |
2a842aca | 701 | fd_end_request_cur(BLK_STS_IOERR); |
1da177e4 | 702 | } |
c8e90782 | 703 | else if (fd_request->error_count == RECALIBRATE_ERRORS) { |
1da177e4 LT |
704 | printk(KERN_WARNING "fd%d: recalibrating\n", SelectedDrive ); |
705 | if (SelectedDrive != -1) | |
706 | SUD.track = -1; | |
707 | } | |
1da177e4 LT |
708 | } |
709 | ||
710 | ||
711 | ||
712 | #define SET_IRQ_HANDLER(proc) do { FloppyIRQHandler = (proc); } while(0) | |
713 | ||
714 | ||
715 | /* ---------- Formatting ---------- */ | |
716 | ||
717 | #define FILL(n,val) \ | |
718 | do { \ | |
719 | memset( p, val, n ); \ | |
720 | p += n; \ | |
721 | } while(0) | |
722 | ||
723 | static int do_format(int drive, int type, struct atari_format_descr *desc) | |
724 | { | |
6ec3938c | 725 | struct request_queue *q = unit[drive].disk->queue; |
1da177e4 LT |
726 | unsigned char *p; |
727 | int sect, nsect; | |
728 | unsigned long flags; | |
6ec3938c | 729 | int ret; |
1da177e4 | 730 | |
6ec3938c OS |
731 | blk_mq_freeze_queue(q); |
732 | blk_mq_quiesce_queue(q); | |
1da177e4 LT |
733 | |
734 | local_irq_save(flags); | |
1da177e4 LT |
735 | stdma_lock(floppy_irq, NULL); |
736 | atari_turnon_irq( IRQ_MFP_FDC ); /* should be already, just to be sure */ | |
737 | local_irq_restore(flags); | |
738 | ||
739 | if (type) { | |
740 | if (--type >= NUM_DISK_MINORS || | |
741 | minor2disktype[type].drive_types > DriveType) { | |
6ec3938c OS |
742 | ret = -EINVAL; |
743 | goto out; | |
1da177e4 LT |
744 | } |
745 | type = minor2disktype[type].index; | |
5ceadd2a | 746 | UDT = &atari_disk_type[type]; |
1da177e4 LT |
747 | } |
748 | ||
749 | if (!UDT || desc->track >= UDT->blocks/UDT->spt/2 || desc->head >= 2) { | |
6ec3938c OS |
750 | ret = -EINVAL; |
751 | goto out; | |
1da177e4 LT |
752 | } |
753 | ||
754 | nsect = UDT->spt; | |
755 | p = TrackBuffer; | |
756 | /* The track buffer is used for the raw track data, so its | |
757 | contents become invalid! */ | |
758 | BufferDrive = -1; | |
759 | /* stop deselect timer */ | |
760 | del_timer( &motor_off_timer ); | |
761 | ||
762 | FILL( 60 * (nsect / 9), 0x4e ); | |
763 | for( sect = 0; sect < nsect; ++sect ) { | |
764 | FILL( 12, 0 ); | |
765 | FILL( 3, 0xf5 ); | |
766 | *p++ = 0xfe; | |
767 | *p++ = desc->track; | |
768 | *p++ = desc->head; | |
769 | *p++ = (nsect + sect - desc->sect_offset) % nsect + 1; | |
770 | *p++ = 2; | |
771 | *p++ = 0xf7; | |
772 | FILL( 22, 0x4e ); | |
773 | FILL( 12, 0 ); | |
774 | FILL( 3, 0xf5 ); | |
775 | *p++ = 0xfb; | |
776 | FILL( 512, 0xe5 ); | |
777 | *p++ = 0xf7; | |
778 | FILL( 40, 0x4e ); | |
779 | } | |
780 | FILL( TrackBuffer+BUFFER_SIZE-p, 0x4e ); | |
781 | ||
782 | IsFormatting = 1; | |
783 | FormatError = 0; | |
784 | ReqTrack = desc->track; | |
785 | ReqSide = desc->head; | |
786 | do_fd_action( drive ); | |
787 | ||
7b8a3d22 | 788 | wait_for_completion(&format_wait); |
1da177e4 | 789 | |
6ec3938c OS |
790 | ret = FormatError ? -EIO : 0; |
791 | out: | |
792 | blk_mq_unquiesce_queue(q); | |
793 | blk_mq_unfreeze_queue(q); | |
794 | return ret; | |
1da177e4 LT |
795 | } |
796 | ||
797 | ||
798 | /* do_fd_action() is the general procedure for a fd request: All | |
799 | * required parameter settings (drive select, side select, track | |
800 | * position) are checked and set if needed. For each of these | |
801 | * parameters and the actual reading or writing exist two functions: | |
802 | * one that starts the setting (or skips it if possible) and one | |
803 | * callback for the "done" interrupt. Each done func calls the next | |
804 | * set function to propagate the request down to fd_rwsec_done(). | |
805 | */ | |
806 | ||
807 | static void do_fd_action( int drive ) | |
808 | { | |
809 | DPRINT(("do_fd_action\n")); | |
810 | ||
811 | if (UseTrackbuffer && !IsFormatting) { | |
812 | repeat: | |
813 | if (IS_BUFFERED( drive, ReqSide, ReqTrack )) { | |
814 | if (ReqCmd == READ) { | |
815 | copy_buffer( SECTOR_BUFFER(ReqSector), ReqData ); | |
a336ca6f | 816 | if (++ReqCnt < blk_rq_cur_sectors(fd_request)) { |
1da177e4 LT |
817 | /* read next sector */ |
818 | setup_req_params( drive ); | |
819 | goto repeat; | |
820 | } | |
821 | else { | |
822 | /* all sectors finished */ | |
2a842aca | 823 | fd_end_request_cur(BLK_STS_OK); |
1da177e4 LT |
824 | return; |
825 | } | |
826 | } | |
827 | else { | |
828 | /* cmd == WRITE, pay attention to track buffer | |
829 | * consistency! */ | |
830 | copy_buffer( ReqData, SECTOR_BUFFER(ReqSector) ); | |
831 | } | |
832 | } | |
833 | } | |
834 | ||
835 | if (SelectedDrive != drive) | |
836 | fd_select_drive( drive ); | |
837 | ||
838 | if (UD.track == -1) | |
839 | fd_calibrate(); | |
840 | else if (UD.track != ReqTrack << UDT->stretch) | |
841 | fd_seek(); | |
842 | else if (IsFormatting) | |
843 | fd_writetrack(); | |
844 | else | |
845 | fd_rwsec(); | |
846 | } | |
847 | ||
848 | ||
849 | /* Seek to track 0 if the current track is unknown */ | |
850 | ||
851 | static void fd_calibrate( void ) | |
852 | { | |
853 | if (SUD.track >= 0) { | |
854 | fd_calibrate_done( 0 ); | |
855 | return; | |
856 | } | |
857 | ||
858 | if (ATARIHW_PRESENT(FDCSPEED)) | |
859 | dma_wd.fdc_speed = 0; /* always seek with 8 Mhz */; | |
860 | DPRINT(("fd_calibrate\n")); | |
861 | SET_IRQ_HANDLER( fd_calibrate_done ); | |
862 | /* we can't verify, since the speed may be incorrect */ | |
863 | FDC_WRITE( FDCREG_CMD, FDCCMD_RESTORE | SUD.steprate ); | |
864 | ||
865 | NeedSeek = 1; | |
866 | MotorOn = 1; | |
867 | start_timeout(); | |
868 | /* wait for IRQ */ | |
869 | } | |
870 | ||
871 | ||
872 | static void fd_calibrate_done( int status ) | |
873 | { | |
874 | DPRINT(("fd_calibrate_done()\n")); | |
875 | stop_timeout(); | |
876 | ||
877 | /* set the correct speed now */ | |
878 | if (ATARIHW_PRESENT(FDCSPEED)) | |
879 | dma_wd.fdc_speed = SUDT->fdc_speed; | |
880 | if (status & FDCSTAT_RECNF) { | |
881 | printk(KERN_ERR "fd%d: restore failed\n", SelectedDrive ); | |
882 | fd_error(); | |
883 | } | |
884 | else { | |
885 | SUD.track = 0; | |
886 | fd_seek(); | |
887 | } | |
888 | } | |
889 | ||
890 | ||
891 | /* Seek the drive to the requested track. The drive must have been | |
892 | * calibrated at some point before this. | |
893 | */ | |
894 | ||
895 | static void fd_seek( void ) | |
896 | { | |
897 | if (SUD.track == ReqTrack << SUDT->stretch) { | |
898 | fd_seek_done( 0 ); | |
899 | return; | |
900 | } | |
901 | ||
902 | if (ATARIHW_PRESENT(FDCSPEED)) { | |
903 | dma_wd.fdc_speed = 0; /* always seek witch 8 Mhz */ | |
904 | MFPDELAY(); | |
905 | } | |
906 | ||
907 | DPRINT(("fd_seek() to track %d\n",ReqTrack)); | |
908 | FDC_WRITE( FDCREG_DATA, ReqTrack << SUDT->stretch); | |
909 | udelay(25); | |
910 | SET_IRQ_HANDLER( fd_seek_done ); | |
911 | FDC_WRITE( FDCREG_CMD, FDCCMD_SEEK | SUD.steprate ); | |
912 | ||
913 | MotorOn = 1; | |
914 | set_head_settle_flag(); | |
915 | start_timeout(); | |
916 | /* wait for IRQ */ | |
917 | } | |
918 | ||
919 | ||
920 | static void fd_seek_done( int status ) | |
921 | { | |
922 | DPRINT(("fd_seek_done()\n")); | |
923 | stop_timeout(); | |
924 | ||
925 | /* set the correct speed */ | |
926 | if (ATARIHW_PRESENT(FDCSPEED)) | |
927 | dma_wd.fdc_speed = SUDT->fdc_speed; | |
928 | if (status & FDCSTAT_RECNF) { | |
929 | printk(KERN_ERR "fd%d: seek error (to track %d)\n", | |
930 | SelectedDrive, ReqTrack ); | |
931 | /* we don't know exactly which track we are on now! */ | |
932 | SUD.track = -1; | |
933 | fd_error(); | |
934 | } | |
935 | else { | |
936 | SUD.track = ReqTrack << SUDT->stretch; | |
937 | NeedSeek = 0; | |
938 | if (IsFormatting) | |
939 | fd_writetrack(); | |
940 | else | |
941 | fd_rwsec(); | |
942 | } | |
943 | } | |
944 | ||
945 | ||
946 | /* This does the actual reading/writing after positioning the head | |
947 | * over the correct track. | |
948 | */ | |
949 | ||
950 | static int MultReadInProgress = 0; | |
951 | ||
952 | ||
953 | static void fd_rwsec( void ) | |
954 | { | |
955 | unsigned long paddr, flags; | |
956 | unsigned int rwflag, old_motoron; | |
957 | unsigned int track; | |
958 | ||
959 | DPRINT(("fd_rwsec(), Sec=%d, Access=%c\n",ReqSector, ReqCmd == WRITE ? 'w' : 'r' )); | |
960 | if (ReqCmd == WRITE) { | |
961 | if (ATARIHW_PRESENT(EXTD_DMA)) { | |
962 | paddr = virt_to_phys(ReqData); | |
963 | } | |
964 | else { | |
965 | copy_buffer( ReqData, DMABuffer ); | |
966 | paddr = PhysDMABuffer; | |
967 | } | |
968 | dma_cache_maintenance( paddr, 512, 1 ); | |
969 | rwflag = 0x100; | |
970 | } | |
971 | else { | |
972 | if (read_track) | |
973 | paddr = PhysTrackBuffer; | |
974 | else | |
975 | paddr = ATARIHW_PRESENT(EXTD_DMA) ? | |
976 | virt_to_phys(ReqData) : PhysDMABuffer; | |
977 | rwflag = 0; | |
978 | } | |
979 | ||
980 | fd_select_side( ReqSide ); | |
981 | ||
982 | /* Start sector of this operation */ | |
983 | FDC_WRITE( FDCREG_SECTOR, read_track ? 1 : ReqSector ); | |
984 | MFPDELAY(); | |
985 | /* Cheat for track if stretch != 0 */ | |
986 | if (SUDT->stretch) { | |
987 | track = FDC_READ( FDCREG_TRACK); | |
988 | MFPDELAY(); | |
989 | FDC_WRITE( FDCREG_TRACK, track >> SUDT->stretch); | |
990 | } | |
991 | udelay(25); | |
992 | ||
993 | /* Setup DMA */ | |
994 | local_irq_save(flags); | |
995 | dma_wd.dma_lo = (unsigned char)paddr; | |
996 | MFPDELAY(); | |
997 | paddr >>= 8; | |
998 | dma_wd.dma_md = (unsigned char)paddr; | |
999 | MFPDELAY(); | |
1000 | paddr >>= 8; | |
1001 | if (ATARIHW_PRESENT(EXTD_DMA)) | |
1002 | st_dma_ext_dmahi = (unsigned short)paddr; | |
1003 | else | |
1004 | dma_wd.dma_hi = (unsigned char)paddr; | |
1005 | MFPDELAY(); | |
1006 | local_irq_restore(flags); | |
1007 | ||
1008 | /* Clear FIFO and switch DMA to correct mode */ | |
1009 | dma_wd.dma_mode_status = 0x90 | rwflag; | |
1010 | MFPDELAY(); | |
1011 | dma_wd.dma_mode_status = 0x90 | (rwflag ^ 0x100); | |
1012 | MFPDELAY(); | |
1013 | dma_wd.dma_mode_status = 0x90 | rwflag; | |
1014 | MFPDELAY(); | |
1015 | ||
1016 | /* How many sectors for DMA */ | |
1017 | dma_wd.fdc_acces_seccount = read_track ? SUDT->spt : 1; | |
1018 | ||
1019 | udelay(25); | |
1020 | ||
1021 | /* Start operation */ | |
1022 | dma_wd.dma_mode_status = FDCSELREG_STP | rwflag; | |
1023 | udelay(25); | |
1024 | SET_IRQ_HANDLER( fd_rwsec_done ); | |
1025 | dma_wd.fdc_acces_seccount = | |
1026 | (get_head_settle_flag() | | |
1027 | (rwflag ? FDCCMD_WRSEC : (FDCCMD_RDSEC | (read_track ? FDCCMDADD_M : 0)))); | |
1028 | ||
1029 | old_motoron = MotorOn; | |
1030 | MotorOn = 1; | |
1031 | NeedSeek = 1; | |
1032 | /* wait for interrupt */ | |
1033 | ||
1034 | if (read_track) { | |
1035 | /* If reading a whole track, wait about one disk rotation and | |
1036 | * then check if all sectors are read. The FDC will even | |
1037 | * search for the first non-existent sector and need 1 sec to | |
1038 | * recognise that it isn't present :-( | |
1039 | */ | |
1040 | MultReadInProgress = 1; | |
1041 | mod_timer(&readtrack_timer, | |
1042 | /* 1 rot. + 5 rot.s if motor was off */ | |
1043 | jiffies + HZ/5 + (old_motoron ? 0 : HZ)); | |
1044 | } | |
1045 | start_timeout(); | |
1046 | } | |
1047 | ||
1048 | ||
24ed960a | 1049 | static void fd_readtrack_check(struct timer_list *unused) |
1da177e4 LT |
1050 | { |
1051 | unsigned long flags, addr, addr2; | |
1052 | ||
1053 | local_irq_save(flags); | |
1054 | ||
1055 | if (!MultReadInProgress) { | |
1056 | /* This prevents a race condition that could arise if the | |
1057 | * interrupt is triggered while the calling of this timer | |
1058 | * callback function takes place. The IRQ function then has | |
1059 | * already cleared 'MultReadInProgress' when flow of control | |
1060 | * gets here. | |
1061 | */ | |
1062 | local_irq_restore(flags); | |
1063 | return; | |
1064 | } | |
1065 | ||
1066 | /* get the current DMA address */ | |
1067 | /* ++ f.a. read twice to avoid being fooled by switcher */ | |
1068 | addr = 0; | |
1069 | do { | |
1070 | addr2 = addr; | |
1071 | addr = dma_wd.dma_lo & 0xff; | |
1072 | MFPDELAY(); | |
1073 | addr |= (dma_wd.dma_md & 0xff) << 8; | |
1074 | MFPDELAY(); | |
1075 | if (ATARIHW_PRESENT( EXTD_DMA )) | |
1076 | addr |= (st_dma_ext_dmahi & 0xffff) << 16; | |
1077 | else | |
1078 | addr |= (dma_wd.dma_hi & 0xff) << 16; | |
1079 | MFPDELAY(); | |
1080 | } while(addr != addr2); | |
1081 | ||
1082 | if (addr >= PhysTrackBuffer + SUDT->spt*512) { | |
1083 | /* already read enough data, force an FDC interrupt to stop | |
1084 | * the read operation | |
1085 | */ | |
1086 | SET_IRQ_HANDLER( NULL ); | |
1087 | MultReadInProgress = 0; | |
1088 | local_irq_restore(flags); | |
1089 | DPRINT(("fd_readtrack_check(): done\n")); | |
1090 | FDC_WRITE( FDCREG_CMD, FDCCMD_FORCI ); | |
1091 | udelay(25); | |
1092 | ||
1093 | /* No error until now -- the FDC would have interrupted | |
1094 | * otherwise! | |
1095 | */ | |
1096 | fd_rwsec_done1(0); | |
1097 | } | |
1098 | else { | |
1099 | /* not yet finished, wait another tenth rotation */ | |
1100 | local_irq_restore(flags); | |
1101 | DPRINT(("fd_readtrack_check(): not yet finished\n")); | |
1102 | mod_timer(&readtrack_timer, jiffies + HZ/5/10); | |
1103 | } | |
1104 | } | |
1105 | ||
1106 | ||
1107 | static void fd_rwsec_done( int status ) | |
1108 | { | |
1109 | DPRINT(("fd_rwsec_done()\n")); | |
1110 | ||
1111 | if (read_track) { | |
1112 | del_timer(&readtrack_timer); | |
1113 | if (!MultReadInProgress) | |
1114 | return; | |
1115 | MultReadInProgress = 0; | |
1116 | } | |
1117 | fd_rwsec_done1(status); | |
1118 | } | |
1119 | ||
1120 | static void fd_rwsec_done1(int status) | |
1121 | { | |
1122 | unsigned int track; | |
1123 | ||
1124 | stop_timeout(); | |
1125 | ||
1126 | /* Correct the track if stretch != 0 */ | |
1127 | if (SUDT->stretch) { | |
1128 | track = FDC_READ( FDCREG_TRACK); | |
1129 | MFPDELAY(); | |
1130 | FDC_WRITE( FDCREG_TRACK, track << SUDT->stretch); | |
1131 | } | |
1132 | ||
1133 | if (!UseTrackbuffer) { | |
1134 | dma_wd.dma_mode_status = 0x90; | |
1135 | MFPDELAY(); | |
1136 | if (!(dma_wd.dma_mode_status & 0x01)) { | |
1137 | printk(KERN_ERR "fd%d: DMA error\n", SelectedDrive ); | |
1138 | goto err_end; | |
1139 | } | |
1140 | } | |
1141 | MFPDELAY(); | |
1142 | ||
1143 | if (ReqCmd == WRITE && (status & FDCSTAT_WPROT)) { | |
1144 | printk(KERN_NOTICE "fd%d: is write protected\n", SelectedDrive ); | |
1145 | goto err_end; | |
1146 | } | |
1147 | if ((status & FDCSTAT_RECNF) && | |
1148 | /* RECNF is no error after a multiple read when the FDC | |
1149 | searched for a non-existent sector! */ | |
1150 | !(read_track && FDC_READ(FDCREG_SECTOR) > SUDT->spt)) { | |
1151 | if (Probing) { | |
5ceadd2a | 1152 | if (SUDT > atari_disk_type) { |
1da177e4 LT |
1153 | if (SUDT[-1].blocks > ReqBlock) { |
1154 | /* try another disk type */ | |
1155 | SUDT--; | |
1156 | set_capacity(unit[SelectedDrive].disk, | |
1157 | SUDT->blocks); | |
1158 | } else | |
1159 | Probing = 0; | |
1160 | } | |
1161 | else { | |
1162 | if (SUD.flags & FTD_MSG) | |
1163 | printk(KERN_INFO "fd%d: Auto-detected floppy type %s\n", | |
1164 | SelectedDrive, SUDT->name ); | |
1165 | Probing=0; | |
1166 | } | |
1167 | } else { | |
1168 | /* record not found, but not probing. Maybe stretch wrong ? Restart probing */ | |
1169 | if (SUD.autoprobe) { | |
5ceadd2a | 1170 | SUDT = atari_disk_type + StartDiskType[DriveType]; |
1da177e4 LT |
1171 | set_capacity(unit[SelectedDrive].disk, |
1172 | SUDT->blocks); | |
1173 | Probing = 1; | |
1174 | } | |
1175 | } | |
1176 | if (Probing) { | |
1177 | if (ATARIHW_PRESENT(FDCSPEED)) { | |
1178 | dma_wd.fdc_speed = SUDT->fdc_speed; | |
1179 | MFPDELAY(); | |
1180 | } | |
1181 | setup_req_params( SelectedDrive ); | |
1182 | BufferDrive = -1; | |
1183 | do_fd_action( SelectedDrive ); | |
1184 | return; | |
1185 | } | |
1186 | ||
1187 | printk(KERN_ERR "fd%d: sector %d not found (side %d, track %d)\n", | |
1188 | SelectedDrive, FDC_READ (FDCREG_SECTOR), ReqSide, ReqTrack ); | |
1189 | goto err_end; | |
1190 | } | |
1191 | if (status & FDCSTAT_CRC) { | |
1192 | printk(KERN_ERR "fd%d: CRC error (side %d, track %d, sector %d)\n", | |
1193 | SelectedDrive, ReqSide, ReqTrack, FDC_READ (FDCREG_SECTOR) ); | |
1194 | goto err_end; | |
1195 | } | |
1196 | if (status & FDCSTAT_LOST) { | |
1197 | printk(KERN_ERR "fd%d: lost data (side %d, track %d, sector %d)\n", | |
1198 | SelectedDrive, ReqSide, ReqTrack, FDC_READ (FDCREG_SECTOR) ); | |
1199 | goto err_end; | |
1200 | } | |
1201 | ||
1202 | Probing = 0; | |
1203 | ||
1204 | if (ReqCmd == READ) { | |
1205 | if (!read_track) { | |
1206 | void *addr; | |
1207 | addr = ATARIHW_PRESENT( EXTD_DMA ) ? ReqData : DMABuffer; | |
1208 | dma_cache_maintenance( virt_to_phys(addr), 512, 0 ); | |
1209 | if (!ATARIHW_PRESENT( EXTD_DMA )) | |
1210 | copy_buffer (addr, ReqData); | |
1211 | } else { | |
1212 | dma_cache_maintenance( PhysTrackBuffer, MaxSectors[DriveType] * 512, 0 ); | |
1213 | BufferDrive = SelectedDrive; | |
1214 | BufferSide = ReqSide; | |
1215 | BufferTrack = ReqTrack; | |
1216 | copy_buffer (SECTOR_BUFFER (ReqSector), ReqData); | |
1217 | } | |
1218 | } | |
1219 | ||
a336ca6f | 1220 | if (++ReqCnt < blk_rq_cur_sectors(fd_request)) { |
1da177e4 LT |
1221 | /* read next sector */ |
1222 | setup_req_params( SelectedDrive ); | |
1223 | do_fd_action( SelectedDrive ); | |
1224 | } | |
1225 | else { | |
1226 | /* all sectors finished */ | |
2a842aca | 1227 | fd_end_request_cur(BLK_STS_OK); |
1da177e4 LT |
1228 | } |
1229 | return; | |
1230 | ||
1231 | err_end: | |
1232 | BufferDrive = -1; | |
1233 | fd_error(); | |
1234 | } | |
1235 | ||
1236 | ||
1237 | static void fd_writetrack( void ) | |
1238 | { | |
1239 | unsigned long paddr, flags; | |
1240 | unsigned int track; | |
1241 | ||
1242 | DPRINT(("fd_writetrack() Tr=%d Si=%d\n", ReqTrack, ReqSide )); | |
1243 | ||
1244 | paddr = PhysTrackBuffer; | |
1245 | dma_cache_maintenance( paddr, BUFFER_SIZE, 1 ); | |
1246 | ||
1247 | fd_select_side( ReqSide ); | |
1248 | ||
1249 | /* Cheat for track if stretch != 0 */ | |
1250 | if (SUDT->stretch) { | |
1251 | track = FDC_READ( FDCREG_TRACK); | |
1252 | MFPDELAY(); | |
1253 | FDC_WRITE(FDCREG_TRACK,track >> SUDT->stretch); | |
1254 | } | |
1255 | udelay(40); | |
1256 | ||
1257 | /* Setup DMA */ | |
1258 | local_irq_save(flags); | |
1259 | dma_wd.dma_lo = (unsigned char)paddr; | |
1260 | MFPDELAY(); | |
1261 | paddr >>= 8; | |
1262 | dma_wd.dma_md = (unsigned char)paddr; | |
1263 | MFPDELAY(); | |
1264 | paddr >>= 8; | |
1265 | if (ATARIHW_PRESENT( EXTD_DMA )) | |
1266 | st_dma_ext_dmahi = (unsigned short)paddr; | |
1267 | else | |
1268 | dma_wd.dma_hi = (unsigned char)paddr; | |
1269 | MFPDELAY(); | |
1270 | local_irq_restore(flags); | |
1271 | ||
1272 | /* Clear FIFO and switch DMA to correct mode */ | |
1273 | dma_wd.dma_mode_status = 0x190; | |
1274 | MFPDELAY(); | |
1275 | dma_wd.dma_mode_status = 0x90; | |
1276 | MFPDELAY(); | |
1277 | dma_wd.dma_mode_status = 0x190; | |
1278 | MFPDELAY(); | |
1279 | ||
1280 | /* How many sectors for DMA */ | |
1281 | dma_wd.fdc_acces_seccount = BUFFER_SIZE/512; | |
1282 | udelay(40); | |
1283 | ||
1284 | /* Start operation */ | |
1285 | dma_wd.dma_mode_status = FDCSELREG_STP | 0x100; | |
1286 | udelay(40); | |
1287 | SET_IRQ_HANDLER( fd_writetrack_done ); | |
1288 | dma_wd.fdc_acces_seccount = FDCCMD_WRTRA | get_head_settle_flag(); | |
1289 | ||
1290 | MotorOn = 1; | |
1291 | start_timeout(); | |
1292 | /* wait for interrupt */ | |
1293 | } | |
1294 | ||
1295 | ||
1296 | static void fd_writetrack_done( int status ) | |
1297 | { | |
1298 | DPRINT(("fd_writetrack_done()\n")); | |
1299 | ||
1300 | stop_timeout(); | |
1301 | ||
1302 | if (status & FDCSTAT_WPROT) { | |
1303 | printk(KERN_NOTICE "fd%d: is write protected\n", SelectedDrive ); | |
1304 | goto err_end; | |
1305 | } | |
1306 | if (status & FDCSTAT_LOST) { | |
1307 | printk(KERN_ERR "fd%d: lost data (side %d, track %d)\n", | |
1308 | SelectedDrive, ReqSide, ReqTrack ); | |
1309 | goto err_end; | |
1310 | } | |
1311 | ||
7b8a3d22 | 1312 | complete(&format_wait); |
1da177e4 LT |
1313 | return; |
1314 | ||
1315 | err_end: | |
1316 | fd_error(); | |
1317 | } | |
1318 | ||
24ed960a | 1319 | static void fd_times_out(struct timer_list *unused) |
1da177e4 LT |
1320 | { |
1321 | atari_disable_irq( IRQ_MFP_FDC ); | |
1322 | if (!FloppyIRQHandler) goto end; /* int occurred after timer was fired, but | |
1323 | * before we came here... */ | |
1324 | ||
1325 | SET_IRQ_HANDLER( NULL ); | |
1326 | /* If the timeout occurred while the readtrack_check timer was | |
1327 | * active, we need to cancel it, else bad things will happen */ | |
1328 | if (UseTrackbuffer) | |
1329 | del_timer( &readtrack_timer ); | |
1330 | FDC_WRITE( FDCREG_CMD, FDCCMD_FORCI ); | |
1331 | udelay( 25 ); | |
1332 | ||
1333 | printk(KERN_ERR "floppy timeout\n" ); | |
1334 | fd_error(); | |
1335 | end: | |
1336 | atari_enable_irq( IRQ_MFP_FDC ); | |
1337 | } | |
1338 | ||
1339 | ||
1340 | /* The (noop) seek operation here is needed to make the WP bit in the | |
1341 | * FDC status register accessible for check_change. If the last disk | |
1342 | * operation would have been a RDSEC, this bit would always read as 0 | |
1343 | * no matter what :-( To save time, the seek goes to the track we're | |
1344 | * already on. | |
1345 | */ | |
1346 | ||
1347 | static void finish_fdc( void ) | |
1348 | { | |
1349 | if (!NeedSeek) { | |
1350 | finish_fdc_done( 0 ); | |
1351 | } | |
1352 | else { | |
1353 | DPRINT(("finish_fdc: dummy seek started\n")); | |
1354 | FDC_WRITE (FDCREG_DATA, SUD.track); | |
1355 | SET_IRQ_HANDLER( finish_fdc_done ); | |
1356 | FDC_WRITE (FDCREG_CMD, FDCCMD_SEEK); | |
1357 | MotorOn = 1; | |
1358 | start_timeout(); | |
1359 | /* we must wait for the IRQ here, because the ST-DMA | |
1360 | is released immediately afterwards and the interrupt | |
1361 | may be delivered to the wrong driver. */ | |
1362 | } | |
1363 | } | |
1364 | ||
1365 | ||
1366 | static void finish_fdc_done( int dummy ) | |
1367 | { | |
1368 | unsigned long flags; | |
1369 | ||
1370 | DPRINT(("finish_fdc_done entered\n")); | |
1371 | stop_timeout(); | |
1372 | NeedSeek = 0; | |
1373 | ||
1374 | if (timer_pending(&fd_timer) && time_before(fd_timer.expires, jiffies + 5)) | |
1375 | /* If the check for a disk change is done too early after this | |
1376 | * last seek command, the WP bit still reads wrong :-(( | |
1377 | */ | |
1378 | mod_timer(&fd_timer, jiffies + 5); | |
1379 | else | |
1380 | start_check_change_timer(); | |
1381 | start_motor_off_timer(); | |
1382 | ||
1383 | local_irq_save(flags); | |
1384 | stdma_release(); | |
1da177e4 LT |
1385 | local_irq_restore(flags); |
1386 | ||
1387 | DPRINT(("finish_fdc() finished\n")); | |
1388 | } | |
1389 | ||
1390 | /* The detection of disk changes is a dark chapter in Atari history :-( | |
1391 | * Because the "Drive ready" signal isn't present in the Atari | |
1392 | * hardware, one has to rely on the "Write Protect". This works fine, | |
1393 | * as long as no write protected disks are used. TOS solves this | |
1394 | * problem by introducing tri-state logic ("maybe changed") and | |
1395 | * looking at the serial number in block 0. This isn't possible for | |
1396 | * Linux, since the floppy driver can't make assumptions about the | |
1397 | * filesystem used on the disk and thus the contents of block 0. I've | |
1398 | * chosen the method to always say "The disk was changed" if it is | |
1399 | * unsure whether it was. This implies that every open or mount | |
1400 | * invalidates the disk buffers if you work with write protected | |
1401 | * disks. But at least this is better than working with incorrect data | |
1402 | * due to unrecognised disk changes. | |
1403 | */ | |
1404 | ||
1a8a74f0 TH |
1405 | static unsigned int floppy_check_events(struct gendisk *disk, |
1406 | unsigned int clearing) | |
1da177e4 LT |
1407 | { |
1408 | struct atari_floppy_struct *p = disk->private_data; | |
1409 | unsigned int drive = p - unit; | |
1410 | if (test_bit (drive, &fake_change)) { | |
1411 | /* simulated change (e.g. after formatting) */ | |
1a8a74f0 | 1412 | return DISK_EVENT_MEDIA_CHANGE; |
1da177e4 LT |
1413 | } |
1414 | if (test_bit (drive, &changed_floppies)) { | |
1415 | /* surely changed (the WP signal changed at least once) */ | |
1a8a74f0 | 1416 | return DISK_EVENT_MEDIA_CHANGE; |
1da177e4 LT |
1417 | } |
1418 | if (UD.wpstat) { | |
1419 | /* WP is on -> could be changed: to be sure, buffers should be | |
1420 | * invalidated... | |
1421 | */ | |
1a8a74f0 | 1422 | return DISK_EVENT_MEDIA_CHANGE; |
1da177e4 LT |
1423 | } |
1424 | ||
1425 | return 0; | |
1426 | } | |
1427 | ||
1428 | static int floppy_revalidate(struct gendisk *disk) | |
1429 | { | |
1430 | struct atari_floppy_struct *p = disk->private_data; | |
1431 | unsigned int drive = p - unit; | |
1432 | ||
1433 | if (test_bit(drive, &changed_floppies) || | |
1434 | test_bit(drive, &fake_change) || | |
1435 | p->disktype == 0) { | |
1436 | if (UD.flags & FTD_MSG) | |
1437 | printk(KERN_ERR "floppy: clear format %p!\n", UDT); | |
1438 | BufferDrive = -1; | |
1439 | clear_bit(drive, &fake_change); | |
1440 | clear_bit(drive, &changed_floppies); | |
1441 | /* MSch: clearing geometry makes sense only for autoprobe | |
1442 | formats, for 'permanent user-defined' parameter: | |
1443 | restore default_params[] here if flagged valid! */ | |
1444 | if (default_params[drive].blocks == 0) | |
2c7af511 | 1445 | UDT = NULL; |
1da177e4 LT |
1446 | else |
1447 | UDT = &default_params[drive]; | |
1448 | } | |
1449 | return 0; | |
1450 | } | |
1451 | ||
1452 | ||
1453 | /* This sets up the global variables describing the current request. */ | |
1454 | ||
1455 | static void setup_req_params( int drive ) | |
1456 | { | |
1457 | int block = ReqBlock + ReqCnt; | |
1458 | ||
1459 | ReqTrack = block / UDT->spt; | |
1460 | ReqSector = block - ReqTrack * UDT->spt + 1; | |
1461 | ReqSide = ReqTrack & 1; | |
1462 | ReqTrack >>= 1; | |
1463 | ReqData = ReqBuffer + 512 * ReqCnt; | |
1464 | ||
1465 | if (UseTrackbuffer) | |
c8e90782 | 1466 | read_track = (ReqCmd == READ && fd_request->error_count == 0); |
1da177e4 LT |
1467 | else |
1468 | read_track = 0; | |
1469 | ||
1470 | DPRINT(("Request params: Si=%d Tr=%d Se=%d Data=%08lx\n",ReqSide, | |
1471 | ReqTrack, ReqSector, (unsigned long)ReqData )); | |
1472 | } | |
1473 | ||
6ec3938c OS |
1474 | static blk_status_t ataflop_queue_rq(struct blk_mq_hw_ctx *hctx, |
1475 | const struct blk_mq_queue_data *bd) | |
639e2f2a | 1476 | { |
6ec3938c OS |
1477 | struct atari_floppy_struct *floppy = bd->rq->rq_disk->private_data; |
1478 | int drive = floppy - unit; | |
1479 | int type = floppy->type; | |
1da177e4 | 1480 | |
6ec3938c OS |
1481 | spin_lock_irq(&ataflop_lock); |
1482 | if (fd_request) { | |
1483 | spin_unlock_irq(&ataflop_lock); | |
1484 | return BLK_STS_DEV_RESOURCE; | |
1485 | } | |
1486 | if (!stdma_try_lock(floppy_irq, NULL)) { | |
1487 | spin_unlock_irq(&ataflop_lock); | |
1488 | return BLK_STS_RESOURCE; | |
1489 | } | |
1490 | fd_request = bd->rq; | |
1491 | blk_mq_start_request(fd_request); | |
1da177e4 | 1492 | |
6ec3938c | 1493 | atari_disable_irq( IRQ_MFP_FDC ); |
1da177e4 LT |
1494 | |
1495 | IsFormatting = 0; | |
1496 | ||
1da177e4 LT |
1497 | if (!UD.connected) { |
1498 | /* drive not connected */ | |
1499 | printk(KERN_ERR "Unknown Device: fd%d\n", drive ); | |
2a842aca | 1500 | fd_end_request_cur(BLK_STS_IOERR); |
6ec3938c | 1501 | goto out; |
1da177e4 LT |
1502 | } |
1503 | ||
1504 | if (type == 0) { | |
1505 | if (!UDT) { | |
1506 | Probing = 1; | |
5ceadd2a | 1507 | UDT = atari_disk_type + StartDiskType[DriveType]; |
1da177e4 LT |
1508 | set_capacity(floppy->disk, UDT->blocks); |
1509 | UD.autoprobe = 1; | |
1510 | } | |
1511 | } | |
1512 | else { | |
1513 | /* user supplied disk type */ | |
1514 | if (--type >= NUM_DISK_MINORS) { | |
1515 | printk(KERN_WARNING "fd%d: invalid disk format", drive ); | |
2a842aca | 1516 | fd_end_request_cur(BLK_STS_IOERR); |
6ec3938c | 1517 | goto out; |
1da177e4 LT |
1518 | } |
1519 | if (minor2disktype[type].drive_types > DriveType) { | |
1520 | printk(KERN_WARNING "fd%d: unsupported disk format", drive ); | |
2a842aca | 1521 | fd_end_request_cur(BLK_STS_IOERR); |
6ec3938c | 1522 | goto out; |
1da177e4 LT |
1523 | } |
1524 | type = minor2disktype[type].index; | |
5ceadd2a | 1525 | UDT = &atari_disk_type[type]; |
1da177e4 LT |
1526 | set_capacity(floppy->disk, UDT->blocks); |
1527 | UD.autoprobe = 0; | |
1528 | } | |
1da177e4 LT |
1529 | |
1530 | /* stop deselect timer */ | |
1531 | del_timer( &motor_off_timer ); | |
1532 | ||
1533 | ReqCnt = 0; | |
a336ca6f TH |
1534 | ReqCmd = rq_data_dir(fd_request); |
1535 | ReqBlock = blk_rq_pos(fd_request); | |
b4f42e28 | 1536 | ReqBuffer = bio_data(fd_request->bio); |
1da177e4 LT |
1537 | setup_req_params( drive ); |
1538 | do_fd_action( drive ); | |
1539 | ||
6ec3938c OS |
1540 | if (bd->last) |
1541 | finish_fdc(); | |
1da177e4 | 1542 | atari_enable_irq( IRQ_MFP_FDC ); |
6ec3938c OS |
1543 | |
1544 | out: | |
1545 | spin_unlock_irq(&ataflop_lock); | |
1546 | return BLK_STS_OK; | |
1da177e4 LT |
1547 | } |
1548 | ||
8a6cfeb6 | 1549 | static int fd_locked_ioctl(struct block_device *bdev, fmode_t mode, |
1da177e4 LT |
1550 | unsigned int cmd, unsigned long param) |
1551 | { | |
60ad2340 | 1552 | struct gendisk *disk = bdev->bd_disk; |
1da177e4 LT |
1553 | struct atari_floppy_struct *floppy = disk->private_data; |
1554 | int drive = floppy - unit; | |
1555 | int type = floppy->type; | |
1556 | struct atari_format_descr fmt_desc; | |
1557 | struct atari_disk_type *dtp; | |
1558 | struct floppy_struct getprm; | |
1559 | int settype; | |
1560 | struct floppy_struct setprm; | |
2c7af511 | 1561 | void __user *argp = (void __user *)param; |
1da177e4 LT |
1562 | |
1563 | switch (cmd) { | |
1564 | case FDGETPRM: | |
1565 | if (type) { | |
1566 | if (--type >= NUM_DISK_MINORS) | |
1567 | return -ENODEV; | |
1568 | if (minor2disktype[type].drive_types > DriveType) | |
1569 | return -ENODEV; | |
1570 | type = minor2disktype[type].index; | |
5ceadd2a | 1571 | dtp = &atari_disk_type[type]; |
1da177e4 LT |
1572 | if (UD.flags & FTD_MSG) |
1573 | printk (KERN_ERR "floppy%d: found dtp %p name %s!\n", | |
1574 | drive, dtp, dtp->name); | |
1575 | } | |
1576 | else { | |
1577 | if (!UDT) | |
1578 | return -ENXIO; | |
1579 | else | |
1580 | dtp = UDT; | |
1581 | } | |
1582 | memset((void *)&getprm, 0, sizeof(getprm)); | |
1583 | getprm.size = dtp->blocks; | |
1584 | getprm.sect = dtp->spt; | |
1585 | getprm.head = 2; | |
1586 | getprm.track = dtp->blocks/dtp->spt/2; | |
1587 | getprm.stretch = dtp->stretch; | |
2c7af511 | 1588 | if (copy_to_user(argp, &getprm, sizeof(getprm))) |
1da177e4 LT |
1589 | return -EFAULT; |
1590 | return 0; | |
1591 | } | |
1592 | switch (cmd) { | |
1593 | case FDSETPRM: | |
1594 | case FDDEFPRM: | |
1595 | /* | |
1596 | * MSch 7/96: simple 'set geometry' case: just set the | |
1597 | * 'default' device params (minor == 0). | |
1598 | * Currently, the drive geometry is cleared after each | |
1599 | * disk change and subsequent revalidate()! simple | |
1600 | * implementation of FDDEFPRM: save geometry from a | |
1601 | * FDDEFPRM call and restore it in floppy_revalidate() ! | |
1602 | */ | |
1603 | ||
1604 | /* get the parameters from user space */ | |
1605 | if (floppy->ref != 1 && floppy->ref != -1) | |
1606 | return -EBUSY; | |
2c7af511 | 1607 | if (copy_from_user(&setprm, argp, sizeof(setprm))) |
1da177e4 LT |
1608 | return -EFAULT; |
1609 | /* | |
1610 | * first of all: check for floppy change and revalidate, | |
1611 | * or the next access will revalidate - and clear UDT :-( | |
1612 | */ | |
1613 | ||
1a8a74f0 | 1614 | if (floppy_check_events(disk, 0)) |
1da177e4 LT |
1615 | floppy_revalidate(disk); |
1616 | ||
1617 | if (UD.flags & FTD_MSG) | |
1618 | printk (KERN_INFO "floppy%d: setting size %d spt %d str %d!\n", | |
1619 | drive, setprm.size, setprm.sect, setprm.stretch); | |
1620 | ||
1621 | /* what if type > 0 here? Overwrite specified entry ? */ | |
1622 | if (type) { | |
1623 | /* refuse to re-set a predefined type for now */ | |
1da177e4 LT |
1624 | return -EINVAL; |
1625 | } | |
1626 | ||
1627 | /* | |
1628 | * type == 0: first look for a matching entry in the type list, | |
1629 | * and set the UD.disktype field to use the perdefined entry. | |
1630 | * TODO: add user-defined format to head of autoprobe list ? | |
1631 | * Useful to include the user-type for future autodetection! | |
1632 | */ | |
1633 | ||
1634 | for (settype = 0; settype < NUM_DISK_MINORS; settype++) { | |
1635 | int setidx = 0; | |
1636 | if (minor2disktype[settype].drive_types > DriveType) { | |
1637 | /* skip this one, invalid for drive ... */ | |
1638 | continue; | |
1639 | } | |
1640 | setidx = minor2disktype[settype].index; | |
5ceadd2a | 1641 | dtp = &atari_disk_type[setidx]; |
1da177e4 LT |
1642 | |
1643 | /* found matching entry ?? */ | |
1644 | if ( dtp->blocks == setprm.size | |
1645 | && dtp->spt == setprm.sect | |
1646 | && dtp->stretch == setprm.stretch ) { | |
1647 | if (UD.flags & FTD_MSG) | |
1648 | printk (KERN_INFO "floppy%d: setting %s %p!\n", | |
1649 | drive, dtp->name, dtp); | |
1650 | UDT = dtp; | |
1651 | set_capacity(floppy->disk, UDT->blocks); | |
1652 | ||
1653 | if (cmd == FDDEFPRM) { | |
1654 | /* save settings as permanent default type */ | |
1655 | default_params[drive].name = dtp->name; | |
1656 | default_params[drive].spt = dtp->spt; | |
1657 | default_params[drive].blocks = dtp->blocks; | |
1658 | default_params[drive].fdc_speed = dtp->fdc_speed; | |
1659 | default_params[drive].stretch = dtp->stretch; | |
1660 | } | |
1661 | ||
1662 | return 0; | |
1663 | } | |
1664 | ||
1665 | } | |
1666 | ||
1667 | /* no matching disk type found above - setting user_params */ | |
1668 | ||
1669 | if (cmd == FDDEFPRM) { | |
1670 | /* set permanent type */ | |
1671 | dtp = &default_params[drive]; | |
1672 | } else | |
1673 | /* set user type (reset by disk change!) */ | |
1674 | dtp = &user_params[drive]; | |
1675 | ||
1676 | dtp->name = "user format"; | |
1677 | dtp->blocks = setprm.size; | |
1678 | dtp->spt = setprm.sect; | |
1679 | if (setprm.sect > 14) | |
1680 | dtp->fdc_speed = 3; | |
1681 | else | |
1682 | dtp->fdc_speed = 0; | |
1683 | dtp->stretch = setprm.stretch; | |
1684 | ||
1685 | if (UD.flags & FTD_MSG) | |
1686 | printk (KERN_INFO "floppy%d: blk %d spt %d str %d!\n", | |
1687 | drive, dtp->blocks, dtp->spt, dtp->stretch); | |
1688 | ||
1689 | /* sanity check */ | |
8f474287 | 1690 | if (setprm.track != dtp->blocks/dtp->spt/2 || |
6ec3938c | 1691 | setprm.head != 2) |
1da177e4 | 1692 | return -EINVAL; |
1da177e4 LT |
1693 | |
1694 | UDT = dtp; | |
1695 | set_capacity(floppy->disk, UDT->blocks); | |
1696 | ||
1697 | return 0; | |
1698 | case FDMSGON: | |
1699 | UD.flags |= FTD_MSG; | |
1700 | return 0; | |
1701 | case FDMSGOFF: | |
1702 | UD.flags &= ~FTD_MSG; | |
1703 | return 0; | |
1704 | case FDSETEMSGTRESH: | |
1705 | return -EINVAL; | |
1706 | case FDFMTBEG: | |
1707 | return 0; | |
1708 | case FDFMTTRK: | |
1709 | if (floppy->ref != 1 && floppy->ref != -1) | |
1710 | return -EBUSY; | |
2c7af511 | 1711 | if (copy_from_user(&fmt_desc, argp, sizeof(fmt_desc))) |
1da177e4 LT |
1712 | return -EFAULT; |
1713 | return do_format(drive, type, &fmt_desc); | |
1714 | case FDCLRPRM: | |
1715 | UDT = NULL; | |
1716 | /* MSch: invalidate default_params */ | |
1717 | default_params[drive].blocks = 0; | |
1718 | set_capacity(floppy->disk, MAX_DISK_SIZE * 2); | |
1719 | case FDFMTEND: | |
1720 | case FDFLUSH: | |
1721 | /* invalidate the buffer track to force a reread */ | |
1722 | BufferDrive = -1; | |
1723 | set_bit(drive, &fake_change); | |
60ad2340 | 1724 | check_disk_change(bdev); |
1da177e4 LT |
1725 | return 0; |
1726 | default: | |
1727 | return -EINVAL; | |
1728 | } | |
1729 | } | |
1730 | ||
8a6cfeb6 AB |
1731 | static int fd_ioctl(struct block_device *bdev, fmode_t mode, |
1732 | unsigned int cmd, unsigned long arg) | |
1733 | { | |
1734 | int ret; | |
1735 | ||
2a48fc0a | 1736 | mutex_lock(&ataflop_mutex); |
8a6cfeb6 | 1737 | ret = fd_locked_ioctl(bdev, mode, cmd, arg); |
2a48fc0a | 1738 | mutex_unlock(&ataflop_mutex); |
8a6cfeb6 AB |
1739 | |
1740 | return ret; | |
1741 | } | |
1da177e4 LT |
1742 | |
1743 | /* Initialize the 'unit' variable for drive 'drive' */ | |
1744 | ||
1745 | static void __init fd_probe( int drive ) | |
1746 | { | |
1747 | UD.connected = 0; | |
1748 | UDT = NULL; | |
1749 | ||
1750 | if (!fd_test_drive_present( drive )) | |
1751 | return; | |
1752 | ||
1753 | UD.connected = 1; | |
1754 | UD.track = 0; | |
1755 | switch( UserSteprate[drive] ) { | |
1756 | case 2: | |
1757 | UD.steprate = FDCSTEP_2; | |
1758 | break; | |
1759 | case 3: | |
1760 | UD.steprate = FDCSTEP_3; | |
1761 | break; | |
1762 | case 6: | |
1763 | UD.steprate = FDCSTEP_6; | |
1764 | break; | |
1765 | case 12: | |
1766 | UD.steprate = FDCSTEP_12; | |
1767 | break; | |
1768 | default: /* should be -1 for "not set by user" */ | |
1769 | if (ATARIHW_PRESENT( FDCSPEED ) || MACH_IS_MEDUSA) | |
1770 | UD.steprate = FDCSTEP_3; | |
1771 | else | |
1772 | UD.steprate = FDCSTEP_6; | |
1773 | break; | |
1774 | } | |
1775 | MotorOn = 1; /* from probe restore operation! */ | |
1776 | } | |
1777 | ||
1778 | ||
1779 | /* This function tests the physical presence of a floppy drive (not | |
1780 | * whether a disk is inserted). This is done by issuing a restore | |
1781 | * command, waiting max. 2 seconds (that should be enough to move the | |
1782 | * head across the whole disk) and looking at the state of the "TR00" | |
1783 | * signal. This should now be raised if there is a drive connected | |
1784 | * (and there is no hardware failure :-) Otherwise, the drive is | |
1785 | * declared absent. | |
1786 | */ | |
1787 | ||
1788 | static int __init fd_test_drive_present( int drive ) | |
1789 | { | |
1790 | unsigned long timeout; | |
1791 | unsigned char status; | |
1792 | int ok; | |
1793 | ||
1794 | if (drive >= (MACH_IS_FALCON ? 1 : 2)) return( 0 ); | |
1795 | fd_select_drive( drive ); | |
1796 | ||
1797 | /* disable interrupt temporarily */ | |
1798 | atari_turnoff_irq( IRQ_MFP_FDC ); | |
1799 | FDC_WRITE (FDCREG_TRACK, 0xff00); | |
1800 | FDC_WRITE( FDCREG_CMD, FDCCMD_RESTORE | FDCCMDADD_H | FDCSTEP_6 ); | |
1801 | ||
1802 | timeout = jiffies + 2*HZ+HZ/2; | |
1803 | while (time_before(jiffies, timeout)) | |
3d92e8f3 | 1804 | if (!(st_mfp.par_dt_reg & 0x20)) |
1da177e4 LT |
1805 | break; |
1806 | ||
1807 | status = FDC_READ( FDCREG_STATUS ); | |
1808 | ok = (status & FDCSTAT_TR00) != 0; | |
1809 | ||
1810 | /* force interrupt to abort restore operation (FDC would try | |
1811 | * about 50 seconds!) */ | |
1812 | FDC_WRITE( FDCREG_CMD, FDCCMD_FORCI ); | |
1813 | udelay(500); | |
1814 | status = FDC_READ( FDCREG_STATUS ); | |
1815 | udelay(20); | |
1816 | ||
1817 | if (ok) { | |
1818 | /* dummy seek command to make WP bit accessible */ | |
1819 | FDC_WRITE( FDCREG_DATA, 0 ); | |
1820 | FDC_WRITE( FDCREG_CMD, FDCCMD_SEEK ); | |
3d92e8f3 | 1821 | while( st_mfp.par_dt_reg & 0x20 ) |
1da177e4 LT |
1822 | ; |
1823 | status = FDC_READ( FDCREG_STATUS ); | |
1824 | } | |
1825 | ||
1826 | atari_turnon_irq( IRQ_MFP_FDC ); | |
1827 | return( ok ); | |
1828 | } | |
1829 | ||
1830 | ||
1831 | /* Look how many and which kind of drives are connected. If there are | |
1832 | * floppies, additionally start the disk-change and motor-off timers. | |
1833 | */ | |
1834 | ||
1835 | static void __init config_types( void ) | |
1836 | { | |
1837 | int drive, cnt = 0; | |
1838 | ||
1839 | /* for probing drives, set the FDC speed to 8 MHz */ | |
1840 | if (ATARIHW_PRESENT(FDCSPEED)) | |
1841 | dma_wd.fdc_speed = 0; | |
1842 | ||
1843 | printk(KERN_INFO "Probing floppy drive(s):\n"); | |
1844 | for( drive = 0; drive < FD_MAX_UNITS; drive++ ) { | |
1845 | fd_probe( drive ); | |
1846 | if (UD.connected) { | |
1847 | printk(KERN_INFO "fd%d\n", drive); | |
1848 | ++cnt; | |
1849 | } | |
1850 | } | |
1851 | ||
1852 | if (FDC_READ( FDCREG_STATUS ) & FDCSTAT_BUSY) { | |
1853 | /* If FDC is still busy from probing, give it another FORCI | |
1854 | * command to abort the operation. If this isn't done, the FDC | |
1855 | * will interrupt later and its IRQ line stays low, because | |
1856 | * the status register isn't read. And this will block any | |
1857 | * interrupts on this IRQ line :-( | |
1858 | */ | |
1859 | FDC_WRITE( FDCREG_CMD, FDCCMD_FORCI ); | |
1860 | udelay(500); | |
1861 | FDC_READ( FDCREG_STATUS ); | |
1862 | udelay(20); | |
1863 | } | |
1864 | ||
1865 | if (cnt > 0) { | |
1866 | start_motor_off_timer(); | |
1867 | if (cnt == 1) fd_select_drive( 0 ); | |
1868 | start_check_change_timer(); | |
1869 | } | |
1870 | } | |
1871 | ||
1872 | /* | |
1873 | * floppy_open check for aliasing (/dev/fd0 can be the same as | |
1874 | * /dev/PS0 etc), and disallows simultaneous access to the same | |
1875 | * drive with different device numbers. | |
1876 | */ | |
1877 | ||
60ad2340 | 1878 | static int floppy_open(struct block_device *bdev, fmode_t mode) |
1da177e4 | 1879 | { |
60ad2340 AV |
1880 | struct atari_floppy_struct *p = bdev->bd_disk->private_data; |
1881 | int type = MINOR(bdev->bd_dev) >> 2; | |
1da177e4 LT |
1882 | |
1883 | DPRINT(("fd_open: type=%d\n",type)); | |
1884 | if (p->ref && p->type != type) | |
1885 | return -EBUSY; | |
1886 | ||
60ad2340 | 1887 | if (p->ref == -1 || (p->ref && mode & FMODE_EXCL)) |
1da177e4 LT |
1888 | return -EBUSY; |
1889 | ||
60ad2340 | 1890 | if (mode & FMODE_EXCL) |
1da177e4 LT |
1891 | p->ref = -1; |
1892 | else | |
1893 | p->ref++; | |
1894 | ||
1895 | p->type = type; | |
1896 | ||
60ad2340 | 1897 | if (mode & FMODE_NDELAY) |
1da177e4 LT |
1898 | return 0; |
1899 | ||
60ad2340 AV |
1900 | if (mode & (FMODE_READ|FMODE_WRITE)) { |
1901 | check_disk_change(bdev); | |
1902 | if (mode & FMODE_WRITE) { | |
1da177e4 LT |
1903 | if (p->wpstat) { |
1904 | if (p->ref < 0) | |
1905 | p->ref = 0; | |
1906 | else | |
1907 | p->ref--; | |
1da177e4 LT |
1908 | return -EROFS; |
1909 | } | |
1910 | } | |
1911 | } | |
1912 | return 0; | |
1913 | } | |
1914 | ||
6e9624b8 AB |
1915 | static int floppy_unlocked_open(struct block_device *bdev, fmode_t mode) |
1916 | { | |
1917 | int ret; | |
1918 | ||
2a48fc0a | 1919 | mutex_lock(&ataflop_mutex); |
6e9624b8 | 1920 | ret = floppy_open(bdev, mode); |
2a48fc0a | 1921 | mutex_unlock(&ataflop_mutex); |
6e9624b8 AB |
1922 | |
1923 | return ret; | |
1924 | } | |
1da177e4 | 1925 | |
db2a144b | 1926 | static void floppy_release(struct gendisk *disk, fmode_t mode) |
1da177e4 | 1927 | { |
60ad2340 | 1928 | struct atari_floppy_struct *p = disk->private_data; |
2a48fc0a | 1929 | mutex_lock(&ataflop_mutex); |
1da177e4 LT |
1930 | if (p->ref < 0) |
1931 | p->ref = 0; | |
1932 | else if (!p->ref--) { | |
1933 | printk(KERN_ERR "floppy_release with fd_ref == 0"); | |
1934 | p->ref = 0; | |
1935 | } | |
2a48fc0a | 1936 | mutex_unlock(&ataflop_mutex); |
1da177e4 LT |
1937 | } |
1938 | ||
83d5cde4 | 1939 | static const struct block_device_operations floppy_fops = { |
1da177e4 | 1940 | .owner = THIS_MODULE, |
6e9624b8 | 1941 | .open = floppy_unlocked_open, |
60ad2340 | 1942 | .release = floppy_release, |
8a6cfeb6 | 1943 | .ioctl = fd_ioctl, |
1a8a74f0 | 1944 | .check_events = floppy_check_events, |
1da177e4 LT |
1945 | .revalidate_disk= floppy_revalidate, |
1946 | }; | |
1947 | ||
6ec3938c OS |
1948 | static const struct blk_mq_ops ataflop_mq_ops = { |
1949 | .queue_rq = ataflop_queue_rq, | |
1950 | }; | |
1951 | ||
1da177e4 LT |
1952 | static struct kobject *floppy_find(dev_t dev, int *part, void *data) |
1953 | { | |
1954 | int drive = *part & 3; | |
1955 | int type = *part >> 2; | |
1956 | if (drive >= FD_MAX_UNITS || type > NUM_DISK_MINORS) | |
1957 | return NULL; | |
1958 | *part = 0; | |
3079c22e | 1959 | return get_disk_and_module(unit[drive].disk); |
1da177e4 LT |
1960 | } |
1961 | ||
1962 | static int __init atari_floppy_init (void) | |
1963 | { | |
1964 | int i; | |
6ec3938c | 1965 | int ret; |
1da177e4 LT |
1966 | |
1967 | if (!MACH_IS_ATARI) | |
1968 | /* Amiga, Mac, ... don't have Atari-compatible floppy :-) */ | |
e945b568 | 1969 | return -ENODEV; |
1da177e4 | 1970 | |
1da177e4 LT |
1971 | if (register_blkdev(FLOPPY_MAJOR,"fd")) |
1972 | return -EBUSY; | |
1973 | ||
1974 | for (i = 0; i < FD_MAX_UNITS; i++) { | |
1975 | unit[i].disk = alloc_disk(1); | |
6ec3938c OS |
1976 | if (!unit[i].disk) { |
1977 | ret = -ENOMEM; | |
1978 | goto err; | |
1979 | } | |
71327f54 | 1980 | |
6ec3938c OS |
1981 | unit[i].disk->queue = blk_mq_init_sq_queue(&unit[i].tag_set, |
1982 | &ataflop_mq_ops, 2, | |
1983 | BLK_MQ_F_SHOULD_MERGE); | |
1984 | if (IS_ERR(unit[i].disk->queue)) { | |
1985 | ret = PTR_ERR(unit[i].disk->queue); | |
1986 | unit[i].disk->queue = NULL; | |
1987 | goto err; | |
1988 | } | |
1da177e4 LT |
1989 | } |
1990 | ||
1991 | if (UseTrackbuffer < 0) | |
1992 | /* not set by user -> use default: for now, we turn | |
1993 | track buffering off for all Medusas, though it | |
1994 | could be used with ones that have a counter | |
1995 | card. But the test is too hard :-( */ | |
1996 | UseTrackbuffer = !MACH_IS_MEDUSA; | |
1997 | ||
1998 | /* initialize variables */ | |
1999 | SelectedDrive = -1; | |
2000 | BufferDrive = -1; | |
2001 | ||
2002 | DMABuffer = atari_stram_alloc(BUFFER_SIZE+512, "ataflop"); | |
2003 | if (!DMABuffer) { | |
2004 | printk(KERN_ERR "atari_floppy_init: cannot get dma buffer\n"); | |
6ec3938c OS |
2005 | ret = -ENOMEM; |
2006 | goto err; | |
1da177e4 LT |
2007 | } |
2008 | TrackBuffer = DMABuffer + 512; | |
a4de73fb | 2009 | PhysDMABuffer = atari_stram_to_phys(DMABuffer); |
1da177e4 LT |
2010 | PhysTrackBuffer = virt_to_phys(TrackBuffer); |
2011 | BufferDrive = BufferSide = BufferTrack = -1; | |
2012 | ||
1da177e4 LT |
2013 | for (i = 0; i < FD_MAX_UNITS; i++) { |
2014 | unit[i].track = -1; | |
2015 | unit[i].flags = 0; | |
2016 | unit[i].disk->major = FLOPPY_MAJOR; | |
2017 | unit[i].disk->first_minor = i; | |
2018 | sprintf(unit[i].disk->disk_name, "fd%d", i); | |
2019 | unit[i].disk->fops = &floppy_fops; | |
2020 | unit[i].disk->private_data = &unit[i]; | |
1da177e4 LT |
2021 | set_capacity(unit[i].disk, MAX_DISK_SIZE * 2); |
2022 | add_disk(unit[i].disk); | |
2023 | } | |
2024 | ||
2025 | blk_register_region(MKDEV(FLOPPY_MAJOR, 0), 256, THIS_MODULE, | |
2026 | floppy_find, NULL, NULL); | |
2027 | ||
2028 | printk(KERN_INFO "Atari floppy driver: max. %cD, %strack buffering\n", | |
2029 | DriveType == 0 ? 'D' : DriveType == 1 ? 'H' : 'E', | |
2030 | UseTrackbuffer ? "" : "no "); | |
2031 | config_types(); | |
2032 | ||
2033 | return 0; | |
6ec3938c OS |
2034 | |
2035 | err: | |
71327f54 OS |
2036 | do { |
2037 | struct gendisk *disk = unit[i].disk; | |
639e2f2a | 2038 | |
71327f54 OS |
2039 | if (disk) { |
2040 | if (disk->queue) { | |
2041 | blk_cleanup_queue(disk->queue); | |
2042 | disk->queue = NULL; | |
2043 | } | |
6ec3938c | 2044 | blk_mq_free_tag_set(&unit[i].tag_set); |
71327f54 OS |
2045 | put_disk(unit[i].disk); |
2046 | } | |
2047 | } while (i--); | |
639e2f2a | 2048 | |
1da177e4 | 2049 | unregister_blkdev(FLOPPY_MAJOR, "fd"); |
6ec3938c | 2050 | return ret; |
1da177e4 LT |
2051 | } |
2052 | ||
63907435 AV |
2053 | #ifndef MODULE |
2054 | static int __init atari_floppy_setup(char *str) | |
1da177e4 | 2055 | { |
63907435 | 2056 | int ints[3 + FD_MAX_UNITS]; |
1da177e4 | 2057 | int i; |
63907435 AV |
2058 | |
2059 | if (!MACH_IS_ATARI) | |
2060 | return 0; | |
2061 | ||
2062 | str = get_options(str, 3 + FD_MAX_UNITS, ints); | |
1da177e4 LT |
2063 | |
2064 | if (ints[0] < 1) { | |
2065 | printk(KERN_ERR "ataflop_setup: no arguments!\n" ); | |
63907435 | 2066 | return 0; |
1da177e4 LT |
2067 | } |
2068 | else if (ints[0] > 2+FD_MAX_UNITS) { | |
2069 | printk(KERN_ERR "ataflop_setup: too many arguments\n" ); | |
2070 | } | |
2071 | ||
2072 | if (ints[1] < 0 || ints[1] > 2) | |
2073 | printk(KERN_ERR "ataflop_setup: bad drive type\n" ); | |
2074 | else | |
2075 | DriveType = ints[1]; | |
2076 | ||
2077 | if (ints[0] >= 2) | |
2078 | UseTrackbuffer = (ints[2] > 0); | |
2079 | ||
2080 | for( i = 3; i <= ints[0] && i-3 < FD_MAX_UNITS; ++i ) { | |
2081 | if (ints[i] != 2 && ints[i] != 3 && ints[i] != 6 && ints[i] != 12) | |
2082 | printk(KERN_ERR "ataflop_setup: bad steprate\n" ); | |
2083 | else | |
2084 | UserSteprate[i-3] = ints[i]; | |
2085 | } | |
63907435 | 2086 | return 1; |
1da177e4 LT |
2087 | } |
2088 | ||
63907435 AV |
2089 | __setup("floppy=", atari_floppy_setup); |
2090 | #endif | |
2091 | ||
2092 | static void __exit atari_floppy_exit(void) | |
1da177e4 LT |
2093 | { |
2094 | int i; | |
2095 | blk_unregister_region(MKDEV(FLOPPY_MAJOR, 0), 256); | |
2096 | for (i = 0; i < FD_MAX_UNITS; i++) { | |
2097 | del_gendisk(unit[i].disk); | |
6ec3938c OS |
2098 | blk_cleanup_queue(unit[i].disk->queue); |
2099 | blk_mq_free_tag_set(&unit[i].tag_set); | |
1da177e4 LT |
2100 | put_disk(unit[i].disk); |
2101 | } | |
2102 | unregister_blkdev(FLOPPY_MAJOR, "fd"); | |
2103 | ||
1da177e4 LT |
2104 | del_timer_sync(&fd_timer); |
2105 | atari_stram_free( DMABuffer ); | |
2106 | } | |
2107 | ||
2108 | module_init(atari_floppy_init) | |
2109 | module_exit(atari_floppy_exit) | |
2110 | ||
2111 | MODULE_LICENSE("GPL"); |