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authorAdrian Bunk <bunk@stusta.de>2006-12-13 03:35:17 -0500
committerLinus Torvalds <torvalds@woody.osdl.org>2006-12-13 12:05:53 -0500
commitb21a323710e77a27b2f66af901bd3640c30aba6e (patch)
treebe86c36d45da6bd46cb34123c783d973bb57d3d4 /drivers/block
parent029530f810dd5147f7e59b939eb22cfbe0beea12 (diff)
[PATCH] remove the broken BLK_DEV_SWIM_IOP driver
The BLK_DEV_SWIM_IOP driver has: - already been marked as BROKEN in 2.6.0 three years ago and - is still marked as BROKEN. Drivers that had been marked as BROKEN for such a long time seem to be unlikely to be revived in the forseeable future. But if anyone wants to ever revive this driver, the code is still present in the older kernel releases. Signed-off-by: Adrian Bunk <bunk@stusta.de> Cc: Jens Axboe <jens.axboe@oracle.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/block')
-rw-r--r--drivers/block/Kconfig7
-rw-r--r--drivers/block/Makefile1
-rw-r--r--drivers/block/swim_iop.c578
3 files changed, 0 insertions, 586 deletions
diff --git a/drivers/block/Kconfig b/drivers/block/Kconfig
index ce9cfcb6071c..58c1debf86f1 100644
--- a/drivers/block/Kconfig
+++ b/drivers/block/Kconfig
@@ -28,13 +28,6 @@ config ATARI_FLOPPY
28 tristate "Atari floppy support" 28 tristate "Atari floppy support"
29 depends on ATARI 29 depends on ATARI
30 30
31config BLK_DEV_SWIM_IOP
32 bool "Macintosh IIfx/Quadra 900/Quadra 950 floppy support (EXPERIMENTAL)"
33 depends on MAC && EXPERIMENTAL && BROKEN
34 help
35 Say Y here to support the SWIM (Super Woz Integrated Machine) IOP
36 floppy controller on the Macintosh IIfx and Quadra 900/950.
37
38config MAC_FLOPPY 31config MAC_FLOPPY
39 tristate "Support for PowerMac floppy" 32 tristate "Support for PowerMac floppy"
40 depends on PPC_PMAC && !PPC_PMAC64 33 depends on PPC_PMAC && !PPC_PMAC64
diff --git a/drivers/block/Makefile b/drivers/block/Makefile
index 410f259a8031..dd88e33c1eb1 100644
--- a/drivers/block/Makefile
+++ b/drivers/block/Makefile
@@ -9,7 +9,6 @@ obj-$(CONFIG_MAC_FLOPPY) += swim3.o
9obj-$(CONFIG_BLK_DEV_FD) += floppy.o 9obj-$(CONFIG_BLK_DEV_FD) += floppy.o
10obj-$(CONFIG_AMIGA_FLOPPY) += amiflop.o 10obj-$(CONFIG_AMIGA_FLOPPY) += amiflop.o
11obj-$(CONFIG_ATARI_FLOPPY) += ataflop.o 11obj-$(CONFIG_ATARI_FLOPPY) += ataflop.o
12obj-$(CONFIG_BLK_DEV_SWIM_IOP) += swim_iop.o
13obj-$(CONFIG_ATARI_ACSI) += acsi.o 12obj-$(CONFIG_ATARI_ACSI) += acsi.o
14obj-$(CONFIG_ATARI_SLM) += acsi_slm.o 13obj-$(CONFIG_ATARI_SLM) += acsi_slm.o
15obj-$(CONFIG_AMIGA_Z2RAM) += z2ram.o 14obj-$(CONFIG_AMIGA_Z2RAM) += z2ram.o
diff --git a/drivers/block/swim_iop.c b/drivers/block/swim_iop.c
deleted file mode 100644
index ed7b06cf3e68..000000000000
--- a/drivers/block/swim_iop.c
+++ /dev/null
@@ -1,578 +0,0 @@
1/*
2 * Driver for the SWIM (Super Woz Integrated Machine) IOP
3 * floppy controller on the Macintosh IIfx and Quadra 900/950
4 *
5 * Written by Joshua M. Thompson (funaho@jurai.org)
6 * based on the SWIM3 driver (c) 1996 by Paul Mackerras.
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * as published by the Free Software Foundation; either version
11 * 2 of the License, or (at your option) any later version.
12 *
13 * 1999-06-12 (jmt) - Initial implementation.
14 */
15
16/*
17 * -------------------
18 * Theory of Operation
19 * -------------------
20 *
21 * Since the SWIM IOP is message-driven we implement a simple request queue
22 * system. One outstanding request may be queued at any given time (this is
23 * an IOP limitation); only when that request has completed can a new request
24 * be sent.
25 */
26
27#include <linux/stddef.h>
28#include <linux/kernel.h>
29#include <linux/sched.h>
30#include <linux/timer.h>
31#include <linux/delay.h>
32#include <linux/fd.h>
33#include <linux/ioctl.h>
34#include <linux/blkdev.h>
35#include <asm/io.h>
36#include <asm/uaccess.h>
37#include <asm/mac_iop.h>
38#include <asm/swim_iop.h>
39
40#define DRIVER_VERSION "Version 0.1 (1999-06-12)"
41
42#define MAX_FLOPPIES 4
43
44enum swim_state {
45 idle,
46 available,
47 revalidating,
48 transferring,
49 ejecting
50};
51
52struct floppy_state {
53 enum swim_state state;
54 int drive_num; /* device number */
55 int secpercyl; /* disk geometry information */
56 int secpertrack;
57 int total_secs;
58 int write_prot; /* 1 if write-protected, 0 if not, -1 dunno */
59 int ref_count;
60 struct timer_list timeout;
61 int ejected;
62 struct wait_queue *wait;
63 int wanted;
64 int timeout_pending;
65};
66
67struct swim_iop_req {
68 int sent;
69 int complete;
70 __u8 command[32];
71 struct floppy_state *fs;
72 void (*done)(struct swim_iop_req *);
73};
74
75static struct swim_iop_req *current_req;
76static int floppy_count;
77
78static struct floppy_state floppy_states[MAX_FLOPPIES];
79static DEFINE_SPINLOCK(swim_iop_lock);
80
81#define CURRENT elv_next_request(swim_queue)
82
83static char *drive_names[7] = {
84 "not installed", /* DRV_NONE */
85 "unknown (1)", /* DRV_UNKNOWN */
86 "a 400K drive", /* DRV_400K */
87 "an 800K drive" /* DRV_800K */
88 "unknown (4)", /* ???? */
89 "an FDHD", /* DRV_FDHD */
90 "unknown (6)", /* ???? */
91 "an Apple HD20" /* DRV_HD20 */
92};
93
94int swimiop_init(void);
95static void swimiop_init_request(struct swim_iop_req *);
96static int swimiop_send_request(struct swim_iop_req *);
97static void swimiop_receive(struct iop_msg *);
98static void swimiop_status_update(int, struct swim_drvstatus *);
99static int swimiop_eject(struct floppy_state *fs);
100
101static int floppy_ioctl(struct inode *inode, struct file *filp,
102 unsigned int cmd, unsigned long param);
103static int floppy_open(struct inode *inode, struct file *filp);
104static int floppy_release(struct inode *inode, struct file *filp);
105static int floppy_check_change(struct gendisk *disk);
106static int floppy_revalidate(struct gendisk *disk);
107static int grab_drive(struct floppy_state *fs, enum swim_state state,
108 int interruptible);
109static void release_drive(struct floppy_state *fs);
110static void set_timeout(struct floppy_state *fs, int nticks,
111 void (*proc)(unsigned long));
112static void fd_request_timeout(unsigned long);
113static void do_fd_request(request_queue_t * q);
114static void start_request(struct floppy_state *fs);
115
116static struct block_device_operations floppy_fops = {
117 .open = floppy_open,
118 .release = floppy_release,
119 .ioctl = floppy_ioctl,
120 .media_changed = floppy_check_change,
121 .revalidate_disk= floppy_revalidate,
122};
123
124static struct request_queue *swim_queue;
125/*
126 * SWIM IOP initialization
127 */
128
129int swimiop_init(void)
130{
131 volatile struct swim_iop_req req;
132 struct swimcmd_status *cmd = (struct swimcmd_status *) &req.command[0];
133 struct swim_drvstatus *ds = &cmd->status;
134 struct floppy_state *fs;
135 int i;
136
137 current_req = NULL;
138 floppy_count = 0;
139
140 if (!iop_ism_present)
141 return -ENODEV;
142
143 if (register_blkdev(FLOPPY_MAJOR, "fd"))
144 return -EBUSY;
145
146 swim_queue = blk_init_queue(do_fd_request, &swim_iop_lock);
147 if (!swim_queue) {
148 unregister_blkdev(FLOPPY_MAJOR, "fd");
149 return -ENOMEM;
150 }
151
152 printk("SWIM-IOP: %s by Joshua M. Thompson (funaho@jurai.org)\n",
153 DRIVER_VERSION);
154
155 if (iop_listen(SWIM_IOP, SWIM_CHAN, swimiop_receive, "SWIM") != 0) {
156 printk(KERN_ERR "SWIM-IOP: IOP channel already in use; can't initialize.\n");
157 unregister_blkdev(FLOPPY_MAJOR, "fd");
158 blk_cleanup_queue(swim_queue);
159 return -EBUSY;
160 }
161
162 printk(KERN_ERR "SWIM_IOP: probing for installed drives.\n");
163
164 for (i = 0 ; i < MAX_FLOPPIES ; i++) {
165 memset(&floppy_states[i], 0, sizeof(struct floppy_state));
166 fs = &floppy_states[floppy_count];
167
168 swimiop_init_request(&req);
169 cmd->code = CMD_STATUS;
170 cmd->drive_num = i + 1;
171 if (swimiop_send_request(&req) != 0) continue;
172 while (!req.complete);
173 if (cmd->error != 0) {
174 printk(KERN_ERR "SWIM-IOP: probe on drive %d returned error %d\n", i, (uint) cmd->error);
175 continue;
176 }
177 if (ds->installed != 0x01) continue;
178 printk("SWIM-IOP: drive %d is %s (%s, %s, %s, %s)\n", i,
179 drive_names[ds->info.type],
180 ds->info.external? "ext" : "int",
181 ds->info.scsi? "scsi" : "floppy",
182 ds->info.fixed? "fixed" : "removable",
183 ds->info.secondary? "secondary" : "primary");
184 swimiop_status_update(floppy_count, ds);
185 fs->state = idle;
186
187 init_timer(&fs->timeout);
188 floppy_count++;
189 }
190 printk("SWIM-IOP: detected %d installed drives.\n", floppy_count);
191
192 for (i = 0; i < floppy_count; i++) {
193 struct gendisk *disk = alloc_disk(1);
194 if (!disk)
195 continue;
196 disk->major = FLOPPY_MAJOR;
197 disk->first_minor = i;
198 disk->fops = &floppy_fops;
199 sprintf(disk->disk_name, "fd%d", i);
200 disk->private_data = &floppy_states[i];
201 disk->queue = swim_queue;
202 set_capacity(disk, 2880 * 2);
203 add_disk(disk);
204 }
205
206 return 0;
207}
208
209static void swimiop_init_request(struct swim_iop_req *req)
210{
211 req->sent = 0;
212 req->complete = 0;
213 req->done = NULL;
214}
215
216static int swimiop_send_request(struct swim_iop_req *req)
217{
218 unsigned long flags;
219 int err;
220
221 /* It's doubtful an interrupt routine would try to send */
222 /* a SWIM request, but I'd rather play it safe here. */
223
224 local_irq_save(flags);
225
226 if (current_req != NULL) {
227 local_irq_restore(flags);
228 return -ENOMEM;
229 }
230
231 current_req = req;
232
233 /* Interrupts should be back on for iop_send_message() */
234
235 local_irq_restore(flags);
236
237 err = iop_send_message(SWIM_IOP, SWIM_CHAN, (void *) req,
238 sizeof(req->command), (__u8 *) &req->command[0],
239 swimiop_receive);
240
241 /* No race condition here; we own current_req at this point */
242
243 if (err) {
244 current_req = NULL;
245 } else {
246 req->sent = 1;
247 }
248 return err;
249}
250
251/*
252 * Receive a SWIM message from the IOP.
253 *
254 * This will be called in two cases:
255 *
256 * 1. A message has been successfully sent to the IOP.
257 * 2. An unsolicited message was received from the IOP.
258 */
259
260void swimiop_receive(struct iop_msg *msg)
261{
262 struct swim_iop_req *req;
263 struct swimmsg_status *sm;
264 struct swim_drvstatus *ds;
265
266 req = current_req;
267
268 switch(msg->status) {
269 case IOP_MSGSTATUS_COMPLETE:
270 memcpy(&req->command[0], &msg->reply[0], sizeof(req->command));
271 req->complete = 1;
272 if (req->done) (*req->done)(req);
273 current_req = NULL;
274 break;
275 case IOP_MSGSTATUS_UNSOL:
276 sm = (struct swimmsg_status *) &msg->message[0];
277 ds = &sm->status;
278 swimiop_status_update(sm->drive_num, ds);
279 iop_complete_message(msg);
280 break;
281 }
282}
283
284static void swimiop_status_update(int drive_num, struct swim_drvstatus *ds)
285{
286 struct floppy_state *fs = &floppy_states[drive_num];
287
288 fs->write_prot = (ds->write_prot == 0x80);
289 if ((ds->disk_in_drive != 0x01) && (ds->disk_in_drive != 0x02)) {
290 fs->ejected = 1;
291 } else {
292 fs->ejected = 0;
293 }
294 switch(ds->info.type) {
295 case DRV_400K:
296 fs->secpercyl = 10;
297 fs->secpertrack = 10;
298 fs->total_secs = 800;
299 break;
300 case DRV_800K:
301 fs->secpercyl = 20;
302 fs->secpertrack = 10;
303 fs->total_secs = 1600;
304 break;
305 case DRV_FDHD:
306 fs->secpercyl = 36;
307 fs->secpertrack = 18;
308 fs->total_secs = 2880;
309 break;
310 default:
311 fs->secpercyl = 0;
312 fs->secpertrack = 0;
313 fs->total_secs = 0;
314 break;
315 }
316}
317
318static int swimiop_eject(struct floppy_state *fs)
319{
320 int err, n;
321 struct swim_iop_req req;
322 struct swimcmd_eject *cmd = (struct swimcmd_eject *) &req.command[0];
323
324 err = grab_drive(fs, ejecting, 1);
325 if (err) return err;
326
327 swimiop_init_request(&req);
328 cmd->code = CMD_EJECT;
329 cmd->drive_num = fs->drive_num;
330 err = swimiop_send_request(&req);
331 if (err) {
332 release_drive(fs);
333 return err;
334 }
335 for (n = 2*HZ; n > 0; --n) {
336 if (req.complete) break;
337 if (signal_pending(current)) {
338 err = -EINTR;
339 break;
340 }
341 schedule_timeout_interruptible(1);
342 }
343 release_drive(fs);
344 return cmd->error;
345}
346
347static struct floppy_struct floppy_type =
348 { 2880,18,2,80,0,0x1B,0x00,0xCF,0x6C,NULL }; /* 7 1.44MB 3.5" */
349
350static int floppy_ioctl(struct inode *inode, struct file *filp,
351 unsigned int cmd, unsigned long param)
352{
353 struct floppy_state *fs = inode->i_bdev->bd_disk->private_data;
354 int err;
355
356 if ((cmd & 0x80) && !capable(CAP_SYS_ADMIN))
357 return -EPERM;
358
359 switch (cmd) {
360 case FDEJECT:
361 if (fs->ref_count != 1)
362 return -EBUSY;
363 err = swimiop_eject(fs);
364 return err;
365 case FDGETPRM:
366 if (copy_to_user((void *) param, (void *) &floppy_type,
367 sizeof(struct floppy_struct)))
368 return -EFAULT;
369 return 0;
370 }
371 return -ENOTTY;
372}
373
374static int floppy_open(struct inode *inode, struct file *filp)
375{
376 struct floppy_state *fs = inode->i_bdev->bd_disk->private_data;
377
378 if (fs->ref_count == -1 || filp->f_flags & O_EXCL)
379 return -EBUSY;
380
381 if ((filp->f_flags & O_NDELAY) == 0 && (filp->f_mode & 3)) {
382 check_disk_change(inode->i_bdev);
383 if (fs->ejected)
384 return -ENXIO;
385 }
386
387 if ((filp->f_mode & 2) && fs->write_prot)
388 return -EROFS;
389
390 if (filp->f_flags & O_EXCL)
391 fs->ref_count = -1;
392 else
393 ++fs->ref_count;
394
395 return 0;
396}
397
398static int floppy_release(struct inode *inode, struct file *filp)
399{
400 struct floppy_state *fs = inode->i_bdev->bd_disk->private_data;
401 if (fs->ref_count > 0)
402 fs->ref_count--;
403 return 0;
404}
405
406static int floppy_check_change(struct gendisk *disk)
407{
408 struct floppy_state *fs = disk->private_data;
409 return fs->ejected;
410}
411
412static int floppy_revalidate(struct gendisk *disk)
413{
414 struct floppy_state *fs = disk->private_data;
415 grab_drive(fs, revalidating, 0);
416 /* yadda, yadda */
417 release_drive(fs);
418 return 0;
419}
420
421static void floppy_off(unsigned int nr)
422{
423}
424
425static int grab_drive(struct floppy_state *fs, enum swim_state state,
426 int interruptible)
427{
428 unsigned long flags;
429
430 local_irq_save(flags);
431 if (fs->state != idle) {
432 ++fs->wanted;
433 while (fs->state != available) {
434 if (interruptible && signal_pending(current)) {
435 --fs->wanted;
436 local_irq_restore(flags);
437 return -EINTR;
438 }
439 interruptible_sleep_on(&fs->wait);
440 }
441 --fs->wanted;
442 }
443 fs->state = state;
444 local_irq_restore(flags);
445 return 0;
446}
447
448static void release_drive(struct floppy_state *fs)
449{
450 unsigned long flags;
451
452 local_irq_save(flags);
453 fs->state = idle;
454 start_request(fs);
455 local_irq_restore(flags);
456}
457
458static void set_timeout(struct floppy_state *fs, int nticks,
459 void (*proc)(unsigned long))
460{
461 unsigned long flags;
462
463 local_irq_save(flags);
464 if (fs->timeout_pending)
465 del_timer(&fs->timeout);
466 init_timer(&fs->timeout);
467 fs->timeout.expires = jiffies + nticks;
468 fs->timeout.function = proc;
469 fs->timeout.data = (unsigned long) fs;
470 add_timer(&fs->timeout);
471 fs->timeout_pending = 1;
472 local_irq_restore(flags);
473}
474
475static void do_fd_request(request_queue_t * q)
476{
477 int i;
478
479 for (i = 0 ; i < floppy_count ; i++) {
480 start_request(&floppy_states[i]);
481 }
482}
483
484static void fd_request_complete(struct swim_iop_req *req)
485{
486 struct floppy_state *fs = req->fs;
487 struct swimcmd_rw *cmd = (struct swimcmd_rw *) &req->command[0];
488
489 del_timer(&fs->timeout);
490 fs->timeout_pending = 0;
491 fs->state = idle;
492 if (cmd->error) {
493 printk(KERN_ERR "SWIM-IOP: error %d on read/write request.\n", cmd->error);
494 end_request(CURRENT, 0);
495 } else {
496 CURRENT->sector += cmd->num_blocks;
497 CURRENT->current_nr_sectors -= cmd->num_blocks;
498 if (CURRENT->current_nr_sectors <= 0) {
499 end_request(CURRENT, 1);
500 return;
501 }
502 }
503 start_request(fs);
504}
505
506static void fd_request_timeout(unsigned long data)
507{
508 struct floppy_state *fs = (struct floppy_state *) data;
509
510 fs->timeout_pending = 0;
511 end_request(CURRENT, 0);
512 fs->state = idle;
513}
514
515static void start_request(struct floppy_state *fs)
516{
517 volatile struct swim_iop_req req;
518 struct swimcmd_rw *cmd = (struct swimcmd_rw *) &req.command[0];
519
520 if (fs->state == idle && fs->wanted) {
521 fs->state = available;
522 wake_up(&fs->wait);
523 return;
524 }
525 while (CURRENT && fs->state == idle) {
526 if (CURRENT->bh && !buffer_locked(CURRENT->bh))
527 panic("floppy: block not locked");
528#if 0
529 printk("do_fd_req: dev=%s cmd=%d sec=%ld nr_sec=%ld buf=%p\n",
530 CURRENT->rq_disk->disk_name, CURRENT->cmd,
531 CURRENT->sector, CURRENT->nr_sectors, CURRENT->buffer);
532 printk(" errors=%d current_nr_sectors=%ld\n",
533 CURRENT->errors, CURRENT->current_nr_sectors);
534#endif
535
536 if (CURRENT->sector < 0 || CURRENT->sector >= fs->total_secs) {
537 end_request(CURRENT, 0);
538 continue;
539 }
540 if (CURRENT->current_nr_sectors == 0) {
541 end_request(CURRENT, 1);
542 continue;
543 }
544 if (fs->ejected) {
545 end_request(CURRENT, 0);
546 continue;
547 }
548
549 swimiop_init_request(&req);
550 req.fs = fs;
551 req.done = fd_request_complete;
552
553 if (CURRENT->cmd == WRITE) {
554 if (fs->write_prot) {
555 end_request(CURRENT, 0);
556 continue;
557 }
558 cmd->code = CMD_WRITE;
559 } else {
560 cmd->code = CMD_READ;
561
562 }
563 cmd->drive_num = fs->drive_num;
564 cmd->buffer = CURRENT->buffer;
565 cmd->first_block = CURRENT->sector;
566 cmd->num_blocks = CURRENT->current_nr_sectors;
567
568 if (swimiop_send_request(&req)) {
569 end_request(CURRENT, 0);
570 continue;
571 }
572
573 set_timeout(fs, HZ*CURRENT->current_nr_sectors,
574 fd_request_timeout);
575
576 fs->state = transferring;
577 }
578}
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-16 18:59:29 -0500