Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
59bca8cc BZ |
2 | * Copyright (C) 2000-2002 Michael Cornwell <cornwell@acm.org> |
3 | * Copyright (C) 2000-2002 Andre Hedrick <andre@linux-ide.org> | |
4 | * Copyright (C) 2001-2002 Klaus Smolin | |
1da177e4 | 5 | * IBM Storage Technology Division |
59bca8cc | 6 | * Copyright (C) 2003-2004, 2007 Bartlomiej Zolnierkiewicz |
1da177e4 LT |
7 | * |
8 | * The big the bad and the ugly. | |
1da177e4 LT |
9 | */ |
10 | ||
1da177e4 LT |
11 | #include <linux/module.h> |
12 | #include <linux/types.h> | |
13 | #include <linux/string.h> | |
14 | #include <linux/kernel.h> | |
15 | #include <linux/timer.h> | |
16 | #include <linux/mm.h> | |
651c29a1 | 17 | #include <linux/sched.h> |
1da177e4 LT |
18 | #include <linux/interrupt.h> |
19 | #include <linux/major.h> | |
20 | #include <linux/errno.h> | |
21 | #include <linux/genhd.h> | |
22 | #include <linux/blkpg.h> | |
23 | #include <linux/slab.h> | |
24 | #include <linux/pci.h> | |
25 | #include <linux/delay.h> | |
26 | #include <linux/hdreg.h> | |
27 | #include <linux/ide.h> | |
28 | #include <linux/bitops.h> | |
55c16a70 | 29 | #include <linux/scatterlist.h> |
1da177e4 LT |
30 | |
31 | #include <asm/byteorder.h> | |
32 | #include <asm/irq.h> | |
33 | #include <asm/uaccess.h> | |
34 | #include <asm/io.h> | |
35 | ||
089c5c7e | 36 | void ide_tf_dump(const char *s, struct ide_taskfile *tf) |
9e42237f | 37 | { |
807e35d6 BZ |
38 | #ifdef DEBUG |
39 | printk("%s: tf: feat 0x%02x nsect 0x%02x lbal 0x%02x " | |
40 | "lbam 0x%02x lbah 0x%02x dev 0x%02x cmd 0x%02x\n", | |
089c5c7e | 41 | s, tf->feature, tf->nsect, tf->lbal, |
807e35d6 | 42 | tf->lbam, tf->lbah, tf->device, tf->command); |
6dd9b837 BZ |
43 | printk("%s: hob: nsect 0x%02x lbal 0x%02x " |
44 | "lbam 0x%02x lbah 0x%02x\n", | |
089c5c7e | 45 | s, tf->hob_nsect, tf->hob_lbal, |
6dd9b837 | 46 | tf->hob_lbam, tf->hob_lbah); |
807e35d6 | 47 | #endif |
089c5c7e BZ |
48 | } |
49 | ||
1da177e4 LT |
50 | int taskfile_lib_get_identify (ide_drive_t *drive, u8 *buf) |
51 | { | |
52 | ide_task_t args; | |
650d841d | 53 | |
1da177e4 | 54 | memset(&args, 0, sizeof(ide_task_t)); |
650d841d | 55 | args.tf.nsect = 0x01; |
1da177e4 | 56 | if (drive->media == ide_disk) |
650d841d | 57 | args.tf.command = WIN_IDENTIFY; |
1da177e4 | 58 | else |
650d841d | 59 | args.tf.command = WIN_PIDENTIFY; |
657cc1a8 | 60 | args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; |
ac026ff2 | 61 | args.data_phase = TASKFILE_IN; |
ac026ff2 | 62 | return ide_raw_taskfile(drive, &args, buf, 1); |
1da177e4 LT |
63 | } |
64 | ||
74095a91 BZ |
65 | static int inline task_dma_ok(ide_task_t *task) |
66 | { | |
f6e29e35 | 67 | if (blk_fs_request(task->rq) || (task->tf_flags & IDE_TFLAG_FLAGGED)) |
74095a91 BZ |
68 | return 1; |
69 | ||
70 | switch (task->tf.command) { | |
71 | case WIN_WRITEDMA_ONCE: | |
72 | case WIN_WRITEDMA: | |
73 | case WIN_WRITEDMA_EXT: | |
74 | case WIN_READDMA_ONCE: | |
75 | case WIN_READDMA: | |
76 | case WIN_READDMA_EXT: | |
77 | case WIN_IDENTIFY_DMA: | |
78 | return 1; | |
79 | } | |
80 | ||
81 | return 0; | |
82 | } | |
83 | ||
1192e528 | 84 | static ide_startstop_t task_no_data_intr(ide_drive_t *); |
57d7366b BZ |
85 | static ide_startstop_t set_geometry_intr(ide_drive_t *); |
86 | static ide_startstop_t recal_intr(ide_drive_t *); | |
87 | static ide_startstop_t set_multmode_intr(ide_drive_t *); | |
f6e29e35 BZ |
88 | static ide_startstop_t pre_task_out_intr(ide_drive_t *, struct request *); |
89 | static ide_startstop_t task_in_intr(ide_drive_t *); | |
1192e528 | 90 | |
1da177e4 LT |
91 | ide_startstop_t do_rw_taskfile (ide_drive_t *drive, ide_task_t *task) |
92 | { | |
93 | ide_hwif_t *hwif = HWIF(drive); | |
650d841d | 94 | struct ide_taskfile *tf = &task->tf; |
57d7366b | 95 | ide_handler_t *handler = NULL; |
f37afdac | 96 | const struct ide_dma_ops *dma_ops = hwif->dma_ops; |
1da177e4 | 97 | |
1edee60e BZ |
98 | if (task->data_phase == TASKFILE_MULTI_IN || |
99 | task->data_phase == TASKFILE_MULTI_OUT) { | |
100 | if (!drive->mult_count) { | |
101 | printk(KERN_ERR "%s: multimode not set!\n", | |
102 | drive->name); | |
103 | return ide_stopped; | |
104 | } | |
105 | } | |
106 | ||
107 | if (task->tf_flags & IDE_TFLAG_FLAGGED) | |
108 | task->tf_flags |= IDE_TFLAG_FLAGGED_SET_IN_FLAGS; | |
109 | ||
089c5c7e BZ |
110 | if ((task->tf_flags & IDE_TFLAG_DMA_PIO_FALLBACK) == 0) { |
111 | ide_tf_dump(drive->name, tf); | |
94cd5b62 | 112 | hwif->tf_load(drive, task); |
089c5c7e | 113 | } |
1da177e4 | 114 | |
10d90157 BZ |
115 | switch (task->data_phase) { |
116 | case TASKFILE_MULTI_OUT: | |
117 | case TASKFILE_OUT: | |
4c3032d8 | 118 | hwif->OUTBSYNC(drive, tf->command, hwif->io_ports.command_addr); |
10d90157 BZ |
119 | ndelay(400); /* FIXME */ |
120 | return pre_task_out_intr(drive, task->rq); | |
121 | case TASKFILE_MULTI_IN: | |
122 | case TASKFILE_IN: | |
57d7366b | 123 | handler = task_in_intr; |
1192e528 | 124 | /* fall-through */ |
10d90157 | 125 | case TASKFILE_NO_DATA: |
57d7366b BZ |
126 | if (handler == NULL) |
127 | handler = task_no_data_intr; | |
1192e528 | 128 | /* WIN_{SPECIFY,RESTORE,SETMULT} use custom handlers */ |
57d7366b BZ |
129 | if (task->tf_flags & IDE_TFLAG_CUSTOM_HANDLER) { |
130 | switch (tf->command) { | |
131 | case WIN_SPECIFY: handler = set_geometry_intr; break; | |
132 | case WIN_RESTORE: handler = recal_intr; break; | |
133 | case WIN_SETMULT: handler = set_multmode_intr; break; | |
134 | } | |
135 | } | |
136 | ide_execute_command(drive, tf->command, handler, | |
137 | WAIT_WORSTCASE, NULL); | |
1da177e4 | 138 | return ide_started; |
10d90157 BZ |
139 | default: |
140 | if (task_dma_ok(task) == 0 || drive->using_dma == 0 || | |
5e37bdc0 | 141 | dma_ops->dma_setup(drive)) |
10d90157 | 142 | return ide_stopped; |
5e37bdc0 BZ |
143 | dma_ops->dma_exec_cmd(drive, tf->command); |
144 | dma_ops->dma_start(drive); | |
74095a91 | 145 | return ide_started; |
1da177e4 | 146 | } |
1da177e4 | 147 | } |
f6e29e35 | 148 | EXPORT_SYMBOL_GPL(do_rw_taskfile); |
1da177e4 | 149 | |
1da177e4 LT |
150 | /* |
151 | * set_multmode_intr() is invoked on completion of a WIN_SETMULT cmd. | |
152 | */ | |
57d7366b | 153 | static ide_startstop_t set_multmode_intr(ide_drive_t *drive) |
1da177e4 | 154 | { |
c47137a9 | 155 | u8 stat = ide_read_status(drive); |
1da177e4 | 156 | |
c47137a9 | 157 | if (OK_STAT(stat, READY_STAT, BAD_STAT)) |
1da177e4 | 158 | drive->mult_count = drive->mult_req; |
c47137a9 | 159 | else { |
1da177e4 LT |
160 | drive->mult_req = drive->mult_count = 0; |
161 | drive->special.b.recalibrate = 1; | |
162 | (void) ide_dump_status(drive, "set_multmode", stat); | |
163 | } | |
164 | return ide_stopped; | |
165 | } | |
166 | ||
167 | /* | |
168 | * set_geometry_intr() is invoked on completion of a WIN_SPECIFY cmd. | |
169 | */ | |
57d7366b | 170 | static ide_startstop_t set_geometry_intr(ide_drive_t *drive) |
1da177e4 | 171 | { |
1da177e4 LT |
172 | int retries = 5; |
173 | u8 stat; | |
174 | ||
c47137a9 | 175 | while (((stat = ide_read_status(drive)) & BUSY_STAT) && retries--) |
1da177e4 LT |
176 | udelay(10); |
177 | ||
178 | if (OK_STAT(stat, READY_STAT, BAD_STAT)) | |
179 | return ide_stopped; | |
180 | ||
181 | if (stat & (ERR_STAT|DRQ_STAT)) | |
182 | return ide_error(drive, "set_geometry_intr", stat); | |
183 | ||
125e1874 | 184 | BUG_ON(HWGROUP(drive)->handler != NULL); |
1da177e4 LT |
185 | ide_set_handler(drive, &set_geometry_intr, WAIT_WORSTCASE, NULL); |
186 | return ide_started; | |
187 | } | |
188 | ||
189 | /* | |
190 | * recal_intr() is invoked on completion of a WIN_RESTORE (recalibrate) cmd. | |
191 | */ | |
57d7366b | 192 | static ide_startstop_t recal_intr(ide_drive_t *drive) |
1da177e4 | 193 | { |
c47137a9 | 194 | u8 stat = ide_read_status(drive); |
1da177e4 | 195 | |
c47137a9 | 196 | if (!OK_STAT(stat, READY_STAT, BAD_STAT)) |
1da177e4 LT |
197 | return ide_error(drive, "recal_intr", stat); |
198 | return ide_stopped; | |
199 | } | |
200 | ||
201 | /* | |
202 | * Handler for commands without a data phase | |
203 | */ | |
1192e528 | 204 | static ide_startstop_t task_no_data_intr(ide_drive_t *drive) |
1da177e4 LT |
205 | { |
206 | ide_task_t *args = HWGROUP(drive)->rq->special; | |
1da177e4 LT |
207 | u8 stat; |
208 | ||
366c7f55 | 209 | local_irq_enable_in_hardirq(); |
c47137a9 BZ |
210 | stat = ide_read_status(drive); |
211 | ||
212 | if (!OK_STAT(stat, READY_STAT, BAD_STAT)) | |
1da177e4 LT |
213 | return ide_error(drive, "task_no_data_intr", stat); |
214 | /* calls ide_end_drive_cmd */ | |
c47137a9 | 215 | |
1da177e4 | 216 | if (args) |
64a57fe4 | 217 | ide_end_drive_cmd(drive, stat, ide_read_error(drive)); |
1da177e4 LT |
218 | |
219 | return ide_stopped; | |
220 | } | |
221 | ||
da6f4c7f | 222 | static u8 wait_drive_not_busy(ide_drive_t *drive) |
1da177e4 | 223 | { |
b42fa133 | 224 | int retries; |
1da177e4 LT |
225 | u8 stat; |
226 | ||
227 | /* | |
f54feafa BZ |
228 | * Last sector was transfered, wait until device is ready. This can |
229 | * take up to 6 ms on some ATAPI devices, so we will wait max 10 ms. | |
1da177e4 | 230 | */ |
f54feafa | 231 | for (retries = 0; retries < 1000; retries++) { |
c47137a9 BZ |
232 | stat = ide_read_status(drive); |
233 | ||
234 | if (stat & BUSY_STAT) | |
b42fa133 MY |
235 | udelay(10); |
236 | else | |
237 | break; | |
238 | } | |
1da177e4 | 239 | |
b42fa133 | 240 | if (stat & BUSY_STAT) |
1da177e4 LT |
241 | printk(KERN_ERR "%s: drive still BUSY!\n", drive->name); |
242 | ||
243 | return stat; | |
244 | } | |
245 | ||
92d3ab27 BZ |
246 | static void ide_pio_sector(ide_drive_t *drive, struct request *rq, |
247 | unsigned int write) | |
1da177e4 LT |
248 | { |
249 | ide_hwif_t *hwif = drive->hwif; | |
250 | struct scatterlist *sg = hwif->sg_table; | |
55c16a70 | 251 | struct scatterlist *cursg = hwif->cursg; |
1da177e4 LT |
252 | struct page *page; |
253 | #ifdef CONFIG_HIGHMEM | |
254 | unsigned long flags; | |
255 | #endif | |
256 | unsigned int offset; | |
257 | u8 *buf; | |
258 | ||
55c16a70 JA |
259 | cursg = hwif->cursg; |
260 | if (!cursg) { | |
261 | cursg = sg; | |
262 | hwif->cursg = sg; | |
263 | } | |
264 | ||
45711f1a | 265 | page = sg_page(cursg); |
55c16a70 | 266 | offset = cursg->offset + hwif->cursg_ofs * SECTOR_SIZE; |
1da177e4 LT |
267 | |
268 | /* get the current page and offset */ | |
269 | page = nth_page(page, (offset >> PAGE_SHIFT)); | |
270 | offset %= PAGE_SIZE; | |
271 | ||
272 | #ifdef CONFIG_HIGHMEM | |
273 | local_irq_save(flags); | |
274 | #endif | |
275 | buf = kmap_atomic(page, KM_BIO_SRC_IRQ) + offset; | |
276 | ||
277 | hwif->nleft--; | |
278 | hwif->cursg_ofs++; | |
279 | ||
55c16a70 JA |
280 | if ((hwif->cursg_ofs * SECTOR_SIZE) == cursg->length) { |
281 | hwif->cursg = sg_next(hwif->cursg); | |
1da177e4 LT |
282 | hwif->cursg_ofs = 0; |
283 | } | |
284 | ||
285 | /* do the actual data transfer */ | |
286 | if (write) | |
9567b349 | 287 | hwif->output_data(drive, rq, buf, SECTOR_SIZE); |
1da177e4 | 288 | else |
9567b349 | 289 | hwif->input_data(drive, rq, buf, SECTOR_SIZE); |
1da177e4 LT |
290 | |
291 | kunmap_atomic(buf, KM_BIO_SRC_IRQ); | |
292 | #ifdef CONFIG_HIGHMEM | |
293 | local_irq_restore(flags); | |
294 | #endif | |
295 | } | |
296 | ||
92d3ab27 BZ |
297 | static void ide_pio_multi(ide_drive_t *drive, struct request *rq, |
298 | unsigned int write) | |
1da177e4 LT |
299 | { |
300 | unsigned int nsect; | |
301 | ||
302 | nsect = min_t(unsigned int, drive->hwif->nleft, drive->mult_count); | |
303 | while (nsect--) | |
92d3ab27 | 304 | ide_pio_sector(drive, rq, write); |
1da177e4 LT |
305 | } |
306 | ||
858119e1 | 307 | static void ide_pio_datablock(ide_drive_t *drive, struct request *rq, |
1da177e4 LT |
308 | unsigned int write) |
309 | { | |
35cf2b94 TH |
310 | u8 saved_io_32bit = drive->io_32bit; |
311 | ||
1da177e4 LT |
312 | if (rq->bio) /* fs request */ |
313 | rq->errors = 0; | |
314 | ||
35cf2b94 TH |
315 | if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) { |
316 | ide_task_t *task = rq->special; | |
317 | ||
318 | if (task->tf_flags & IDE_TFLAG_IO_16BIT) | |
319 | drive->io_32bit = 0; | |
320 | } | |
321 | ||
651c29a1 AM |
322 | touch_softlockup_watchdog(); |
323 | ||
1da177e4 LT |
324 | switch (drive->hwif->data_phase) { |
325 | case TASKFILE_MULTI_IN: | |
326 | case TASKFILE_MULTI_OUT: | |
92d3ab27 | 327 | ide_pio_multi(drive, rq, write); |
1da177e4 LT |
328 | break; |
329 | default: | |
92d3ab27 | 330 | ide_pio_sector(drive, rq, write); |
1da177e4 LT |
331 | break; |
332 | } | |
35cf2b94 TH |
333 | |
334 | drive->io_32bit = saved_io_32bit; | |
1da177e4 LT |
335 | } |
336 | ||
337 | static ide_startstop_t task_error(ide_drive_t *drive, struct request *rq, | |
338 | const char *s, u8 stat) | |
339 | { | |
340 | if (rq->bio) { | |
341 | ide_hwif_t *hwif = drive->hwif; | |
342 | int sectors = hwif->nsect - hwif->nleft; | |
343 | ||
344 | switch (hwif->data_phase) { | |
345 | case TASKFILE_IN: | |
346 | if (hwif->nleft) | |
347 | break; | |
348 | /* fall through */ | |
349 | case TASKFILE_OUT: | |
350 | sectors--; | |
351 | break; | |
352 | case TASKFILE_MULTI_IN: | |
353 | if (hwif->nleft) | |
354 | break; | |
355 | /* fall through */ | |
356 | case TASKFILE_MULTI_OUT: | |
357 | sectors -= drive->mult_count; | |
358 | default: | |
359 | break; | |
360 | } | |
361 | ||
362 | if (sectors > 0) { | |
363 | ide_driver_t *drv; | |
364 | ||
365 | drv = *(ide_driver_t **)rq->rq_disk->private_data; | |
366 | drv->end_request(drive, 1, sectors); | |
367 | } | |
368 | } | |
369 | return ide_error(drive, s, stat); | |
370 | } | |
371 | ||
4d7a984b | 372 | void task_end_request(ide_drive_t *drive, struct request *rq, u8 stat) |
1da177e4 | 373 | { |
4aff5e23 | 374 | if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) { |
64a57fe4 | 375 | u8 err = ide_read_error(drive); |
1da177e4 | 376 | |
4d7a984b TH |
377 | ide_end_drive_cmd(drive, stat, err); |
378 | return; | |
1da177e4 LT |
379 | } |
380 | ||
03731fbd RP |
381 | if (rq->rq_disk) { |
382 | ide_driver_t *drv; | |
383 | ||
384 | drv = *(ide_driver_t **)rq->rq_disk->private_data;; | |
79f21b84 | 385 | drv->end_request(drive, 1, rq->nr_sectors); |
03731fbd | 386 | } else |
79f21b84 | 387 | ide_end_request(drive, 1, rq->nr_sectors); |
1da177e4 LT |
388 | } |
389 | ||
6c3c3158 LT |
390 | /* |
391 | * We got an interrupt on a task_in case, but no errors and no DRQ. | |
392 | * | |
393 | * It might be a spurious irq (shared irq), but it might be a | |
394 | * command that had no output. | |
395 | */ | |
396 | static ide_startstop_t task_in_unexpected(ide_drive_t *drive, struct request *rq, u8 stat) | |
397 | { | |
398 | /* Command all done? */ | |
399 | if (OK_STAT(stat, READY_STAT, BUSY_STAT)) { | |
400 | task_end_request(drive, rq, stat); | |
401 | return ide_stopped; | |
402 | } | |
403 | ||
404 | /* Assume it was a spurious irq */ | |
405 | ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL); | |
406 | return ide_started; | |
407 | } | |
408 | ||
1da177e4 LT |
409 | /* |
410 | * Handler for command with PIO data-in phase (Read/Read Multiple). | |
411 | */ | |
f6e29e35 | 412 | static ide_startstop_t task_in_intr(ide_drive_t *drive) |
1da177e4 LT |
413 | { |
414 | ide_hwif_t *hwif = drive->hwif; | |
415 | struct request *rq = HWGROUP(drive)->rq; | |
c47137a9 | 416 | u8 stat = ide_read_status(drive); |
1da177e4 | 417 | |
6c3c3158 LT |
418 | /* Error? */ |
419 | if (stat & ERR_STAT) | |
eb63963a | 420 | return task_error(drive, rq, __func__, stat); |
6c3c3158 LT |
421 | |
422 | /* Didn't want any data? Odd. */ | |
423 | if (!(stat & DRQ_STAT)) | |
424 | return task_in_unexpected(drive, rq, stat); | |
1da177e4 LT |
425 | |
426 | ide_pio_datablock(drive, rq, 0); | |
427 | ||
6c3c3158 | 428 | /* Are we done? Check status and finish transfer. */ |
1da177e4 LT |
429 | if (!hwif->nleft) { |
430 | stat = wait_drive_not_busy(drive); | |
73d7de0c | 431 | if (!OK_STAT(stat, 0, BAD_STAT)) |
eb63963a | 432 | return task_error(drive, rq, __func__, stat); |
1da177e4 LT |
433 | task_end_request(drive, rq, stat); |
434 | return ide_stopped; | |
435 | } | |
436 | ||
437 | /* Still data left to transfer. */ | |
438 | ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL); | |
439 | ||
440 | return ide_started; | |
441 | } | |
1da177e4 LT |
442 | |
443 | /* | |
444 | * Handler for command with PIO data-out phase (Write/Write Multiple). | |
445 | */ | |
446 | static ide_startstop_t task_out_intr (ide_drive_t *drive) | |
447 | { | |
448 | ide_hwif_t *hwif = drive->hwif; | |
449 | struct request *rq = HWGROUP(drive)->rq; | |
c47137a9 | 450 | u8 stat = ide_read_status(drive); |
1da177e4 LT |
451 | |
452 | if (!OK_STAT(stat, DRIVE_READY, drive->bad_wstat)) | |
eb63963a | 453 | return task_error(drive, rq, __func__, stat); |
1da177e4 LT |
454 | |
455 | /* Deal with unexpected ATA data phase. */ | |
456 | if (((stat & DRQ_STAT) == 0) ^ !hwif->nleft) | |
eb63963a | 457 | return task_error(drive, rq, __func__, stat); |
1da177e4 LT |
458 | |
459 | if (!hwif->nleft) { | |
460 | task_end_request(drive, rq, stat); | |
461 | return ide_stopped; | |
462 | } | |
463 | ||
464 | /* Still data left to transfer. */ | |
465 | ide_pio_datablock(drive, rq, 1); | |
466 | ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL); | |
467 | ||
468 | return ide_started; | |
469 | } | |
470 | ||
f6e29e35 | 471 | static ide_startstop_t pre_task_out_intr(ide_drive_t *drive, struct request *rq) |
1da177e4 LT |
472 | { |
473 | ide_startstop_t startstop; | |
474 | ||
4906f3b4 | 475 | if (ide_wait_stat(&startstop, drive, DRQ_STAT, |
1da177e4 LT |
476 | drive->bad_wstat, WAIT_DRQ)) { |
477 | printk(KERN_ERR "%s: no DRQ after issuing %sWRITE%s\n", | |
478 | drive->name, | |
479 | drive->hwif->data_phase ? "MULT" : "", | |
480 | drive->addressing ? "_EXT" : ""); | |
481 | return startstop; | |
482 | } | |
483 | ||
484 | if (!drive->unmask) | |
485 | local_irq_disable(); | |
486 | ||
487 | ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL); | |
488 | ide_pio_datablock(drive, rq, 1); | |
489 | ||
490 | return ide_started; | |
491 | } | |
1da177e4 | 492 | |
ac026ff2 | 493 | int ide_raw_taskfile(ide_drive_t *drive, ide_task_t *task, u8 *buf, u16 nsect) |
1da177e4 LT |
494 | { |
495 | struct request rq; | |
496 | ||
e7b241a7 | 497 | blk_rq_init(NULL, &rq); |
4aff5e23 | 498 | rq.cmd_type = REQ_TYPE_ATA_TASKFILE; |
1da177e4 LT |
499 | rq.buffer = buf; |
500 | ||
501 | /* | |
502 | * (ks) We transfer currently only whole sectors. | |
503 | * This is suffient for now. But, it would be great, | |
504 | * if we would find a solution to transfer any size. | |
505 | * To support special commands like READ LONG. | |
506 | */ | |
ac026ff2 BZ |
507 | rq.hard_nr_sectors = rq.nr_sectors = nsect; |
508 | rq.hard_cur_sectors = rq.current_nr_sectors = nsect; | |
1da177e4 | 509 | |
ac026ff2 BZ |
510 | if (task->tf_flags & IDE_TFLAG_WRITE) |
511 | rq.cmd_flags |= REQ_RW; | |
1da177e4 | 512 | |
ac026ff2 BZ |
513 | rq.special = task; |
514 | task->rq = &rq; | |
1da177e4 | 515 | |
1da177e4 LT |
516 | return ide_do_drive_cmd(drive, &rq, ide_wait); |
517 | } | |
518 | ||
1da177e4 LT |
519 | EXPORT_SYMBOL(ide_raw_taskfile); |
520 | ||
9a3c49be BZ |
521 | int ide_no_data_taskfile(ide_drive_t *drive, ide_task_t *task) |
522 | { | |
ac026ff2 | 523 | task->data_phase = TASKFILE_NO_DATA; |
9a3c49be | 524 | |
ac026ff2 | 525 | return ide_raw_taskfile(drive, task, NULL, 0); |
9a3c49be BZ |
526 | } |
527 | EXPORT_SYMBOL_GPL(ide_no_data_taskfile); | |
528 | ||
26a5b040 | 529 | #ifdef CONFIG_IDE_TASK_IOCTL |
1da177e4 LT |
530 | int ide_taskfile_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg) |
531 | { | |
532 | ide_task_request_t *req_task; | |
533 | ide_task_t args; | |
534 | u8 *outbuf = NULL; | |
535 | u8 *inbuf = NULL; | |
ac026ff2 | 536 | u8 *data_buf = NULL; |
1da177e4 LT |
537 | int err = 0; |
538 | int tasksize = sizeof(struct ide_task_request_s); | |
3a42bb22 AC |
539 | unsigned int taskin = 0; |
540 | unsigned int taskout = 0; | |
ac026ff2 | 541 | u16 nsect = 0; |
1da177e4 LT |
542 | char __user *buf = (char __user *)arg; |
543 | ||
544 | // printk("IDE Taskfile ...\n"); | |
545 | ||
f5e3c2fa | 546 | req_task = kzalloc(tasksize, GFP_KERNEL); |
1da177e4 | 547 | if (req_task == NULL) return -ENOMEM; |
1da177e4 LT |
548 | if (copy_from_user(req_task, buf, tasksize)) { |
549 | kfree(req_task); | |
550 | return -EFAULT; | |
551 | } | |
552 | ||
3a42bb22 AC |
553 | taskout = req_task->out_size; |
554 | taskin = req_task->in_size; | |
555 | ||
556 | if (taskin > 65536 || taskout > 65536) { | |
557 | err = -EINVAL; | |
558 | goto abort; | |
559 | } | |
1da177e4 LT |
560 | |
561 | if (taskout) { | |
562 | int outtotal = tasksize; | |
f5e3c2fa | 563 | outbuf = kzalloc(taskout, GFP_KERNEL); |
1da177e4 LT |
564 | if (outbuf == NULL) { |
565 | err = -ENOMEM; | |
566 | goto abort; | |
567 | } | |
1da177e4 LT |
568 | if (copy_from_user(outbuf, buf + outtotal, taskout)) { |
569 | err = -EFAULT; | |
570 | goto abort; | |
571 | } | |
572 | } | |
573 | ||
574 | if (taskin) { | |
575 | int intotal = tasksize + taskout; | |
f5e3c2fa | 576 | inbuf = kzalloc(taskin, GFP_KERNEL); |
1da177e4 LT |
577 | if (inbuf == NULL) { |
578 | err = -ENOMEM; | |
579 | goto abort; | |
580 | } | |
1da177e4 LT |
581 | if (copy_from_user(inbuf, buf + intotal, taskin)) { |
582 | err = -EFAULT; | |
583 | goto abort; | |
584 | } | |
585 | } | |
586 | ||
587 | memset(&args, 0, sizeof(ide_task_t)); | |
1da177e4 | 588 | |
650d841d BZ |
589 | memcpy(&args.tf_array[0], req_task->hob_ports, HDIO_DRIVE_HOB_HDR_SIZE - 2); |
590 | memcpy(&args.tf_array[6], req_task->io_ports, HDIO_DRIVE_TASK_HDR_SIZE); | |
866e2ec9 BZ |
591 | |
592 | args.data_phase = req_task->data_phase; | |
1da177e4 | 593 | |
657cc1a8 BZ |
594 | args.tf_flags = IDE_TFLAG_IO_16BIT | IDE_TFLAG_DEVICE | |
595 | IDE_TFLAG_IN_TF; | |
a3bbb9d8 | 596 | if (drive->addressing == 1) |
657cc1a8 | 597 | args.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_IN_HOB); |
a3bbb9d8 | 598 | |
74095a91 BZ |
599 | if (req_task->out_flags.all) { |
600 | args.tf_flags |= IDE_TFLAG_FLAGGED; | |
601 | ||
602 | if (req_task->out_flags.b.data) | |
603 | args.tf_flags |= IDE_TFLAG_OUT_DATA; | |
604 | ||
605 | if (req_task->out_flags.b.nsector_hob) | |
606 | args.tf_flags |= IDE_TFLAG_OUT_HOB_NSECT; | |
607 | if (req_task->out_flags.b.sector_hob) | |
608 | args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAL; | |
609 | if (req_task->out_flags.b.lcyl_hob) | |
610 | args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAM; | |
611 | if (req_task->out_flags.b.hcyl_hob) | |
612 | args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAH; | |
613 | ||
614 | if (req_task->out_flags.b.error_feature) | |
615 | args.tf_flags |= IDE_TFLAG_OUT_FEATURE; | |
616 | if (req_task->out_flags.b.nsector) | |
617 | args.tf_flags |= IDE_TFLAG_OUT_NSECT; | |
618 | if (req_task->out_flags.b.sector) | |
619 | args.tf_flags |= IDE_TFLAG_OUT_LBAL; | |
620 | if (req_task->out_flags.b.lcyl) | |
621 | args.tf_flags |= IDE_TFLAG_OUT_LBAM; | |
622 | if (req_task->out_flags.b.hcyl) | |
623 | args.tf_flags |= IDE_TFLAG_OUT_LBAH; | |
a3bbb9d8 BZ |
624 | } else { |
625 | args.tf_flags |= IDE_TFLAG_OUT_TF; | |
626 | if (args.tf_flags & IDE_TFLAG_LBA48) | |
627 | args.tf_flags |= IDE_TFLAG_OUT_HOB; | |
74095a91 BZ |
628 | } |
629 | ||
866e2ec9 BZ |
630 | if (req_task->in_flags.b.data) |
631 | args.tf_flags |= IDE_TFLAG_IN_DATA; | |
632 | ||
1da177e4 | 633 | switch(req_task->data_phase) { |
1da177e4 LT |
634 | case TASKFILE_MULTI_OUT: |
635 | if (!drive->mult_count) { | |
636 | /* (hs): give up if multcount is not set */ | |
637 | printk(KERN_ERR "%s: %s Multimode Write " \ | |
638 | "multcount is not set\n", | |
eb63963a | 639 | drive->name, __func__); |
1da177e4 LT |
640 | err = -EPERM; |
641 | goto abort; | |
642 | } | |
643 | /* fall through */ | |
644 | case TASKFILE_OUT: | |
ac026ff2 BZ |
645 | /* fall through */ |
646 | case TASKFILE_OUT_DMAQ: | |
647 | case TASKFILE_OUT_DMA: | |
648 | nsect = taskout / SECTOR_SIZE; | |
649 | data_buf = outbuf; | |
1da177e4 LT |
650 | break; |
651 | case TASKFILE_MULTI_IN: | |
652 | if (!drive->mult_count) { | |
653 | /* (hs): give up if multcount is not set */ | |
654 | printk(KERN_ERR "%s: %s Multimode Read failure " \ | |
655 | "multcount is not set\n", | |
eb63963a | 656 | drive->name, __func__); |
1da177e4 LT |
657 | err = -EPERM; |
658 | goto abort; | |
659 | } | |
660 | /* fall through */ | |
661 | case TASKFILE_IN: | |
ac026ff2 BZ |
662 | /* fall through */ |
663 | case TASKFILE_IN_DMAQ: | |
664 | case TASKFILE_IN_DMA: | |
665 | nsect = taskin / SECTOR_SIZE; | |
666 | data_buf = inbuf; | |
1da177e4 LT |
667 | break; |
668 | case TASKFILE_NO_DATA: | |
1da177e4 LT |
669 | break; |
670 | default: | |
671 | err = -EFAULT; | |
672 | goto abort; | |
673 | } | |
674 | ||
ac026ff2 BZ |
675 | if (req_task->req_cmd == IDE_DRIVE_TASK_NO_DATA) |
676 | nsect = 0; | |
677 | else if (!nsect) { | |
678 | nsect = (args.tf.hob_nsect << 8) | args.tf.nsect; | |
679 | ||
680 | if (!nsect) { | |
681 | printk(KERN_ERR "%s: in/out command without data\n", | |
682 | drive->name); | |
683 | err = -EFAULT; | |
684 | goto abort; | |
685 | } | |
686 | } | |
687 | ||
688 | if (req_task->req_cmd == IDE_DRIVE_TASK_RAW_WRITE) | |
689 | args.tf_flags |= IDE_TFLAG_WRITE; | |
690 | ||
691 | err = ide_raw_taskfile(drive, &args, data_buf, nsect); | |
692 | ||
650d841d BZ |
693 | memcpy(req_task->hob_ports, &args.tf_array[0], HDIO_DRIVE_HOB_HDR_SIZE - 2); |
694 | memcpy(req_task->io_ports, &args.tf_array[6], HDIO_DRIVE_TASK_HDR_SIZE); | |
866e2ec9 BZ |
695 | |
696 | if ((args.tf_flags & IDE_TFLAG_FLAGGED_SET_IN_FLAGS) && | |
697 | req_task->in_flags.all == 0) { | |
698 | req_task->in_flags.all = IDE_TASKFILE_STD_IN_FLAGS; | |
699 | if (drive->addressing == 1) | |
700 | req_task->in_flags.all |= (IDE_HOB_STD_IN_FLAGS << 8); | |
701 | } | |
1da177e4 LT |
702 | |
703 | if (copy_to_user(buf, req_task, tasksize)) { | |
704 | err = -EFAULT; | |
705 | goto abort; | |
706 | } | |
707 | if (taskout) { | |
708 | int outtotal = tasksize; | |
709 | if (copy_to_user(buf + outtotal, outbuf, taskout)) { | |
710 | err = -EFAULT; | |
711 | goto abort; | |
712 | } | |
713 | } | |
714 | if (taskin) { | |
715 | int intotal = tasksize + taskout; | |
716 | if (copy_to_user(buf + intotal, inbuf, taskin)) { | |
717 | err = -EFAULT; | |
718 | goto abort; | |
719 | } | |
720 | } | |
721 | abort: | |
722 | kfree(req_task); | |
6044ec88 JJ |
723 | kfree(outbuf); |
724 | kfree(inbuf); | |
1da177e4 LT |
725 | |
726 | // printk("IDE Taskfile ioctl ended. rc = %i\n", err); | |
727 | ||
1da177e4 LT |
728 | return err; |
729 | } | |
26a5b040 | 730 | #endif |
1da177e4 | 731 | |
1da177e4 LT |
732 | int ide_cmd_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg) |
733 | { | |
5a9e77af BZ |
734 | u8 *buf = NULL; |
735 | int bufsize = 0, err = 0; | |
736 | u8 args[4], xfer_rate = 0; | |
1da177e4 | 737 | ide_task_t tfargs; |
650d841d | 738 | struct ide_taskfile *tf = &tfargs.tf; |
5efe7c54 | 739 | struct hd_driveid *id = drive->id; |
1da177e4 LT |
740 | |
741 | if (NULL == (void *) arg) { | |
742 | struct request rq; | |
145b75e9 | 743 | |
1da177e4 | 744 | ide_init_drive_cmd(&rq); |
852738f3 | 745 | rq.cmd_type = REQ_TYPE_ATA_TASKFILE; |
145b75e9 | 746 | |
1da177e4 LT |
747 | return ide_do_drive_cmd(drive, &rq, ide_wait); |
748 | } | |
749 | ||
750 | if (copy_from_user(args, (void __user *)arg, 4)) | |
751 | return -EFAULT; | |
752 | ||
753 | memset(&tfargs, 0, sizeof(ide_task_t)); | |
650d841d | 754 | tf->feature = args[2]; |
5a9e77af BZ |
755 | if (args[0] == WIN_SMART) { |
756 | tf->nsect = args[3]; | |
757 | tf->lbal = args[1]; | |
758 | tf->lbam = 0x4f; | |
759 | tf->lbah = 0xc2; | |
760 | tfargs.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_IN_NSECT; | |
761 | } else { | |
762 | tf->nsect = args[1]; | |
763 | tfargs.tf_flags = IDE_TFLAG_OUT_FEATURE | | |
764 | IDE_TFLAG_OUT_NSECT | IDE_TFLAG_IN_NSECT; | |
765 | } | |
650d841d | 766 | tf->command = args[0]; |
5a9e77af | 767 | tfargs.data_phase = args[3] ? TASKFILE_IN : TASKFILE_NO_DATA; |
1da177e4 LT |
768 | |
769 | if (args[3]) { | |
5a9e77af BZ |
770 | tfargs.tf_flags |= IDE_TFLAG_IO_16BIT; |
771 | bufsize = SECTOR_WORDS * 4 * args[3]; | |
772 | buf = kzalloc(bufsize, GFP_KERNEL); | |
773 | if (buf == NULL) | |
1da177e4 | 774 | return -ENOMEM; |
1da177e4 | 775 | } |
5a9e77af | 776 | |
5efe7c54 BZ |
777 | if (tf->command == WIN_SETFEATURES && |
778 | tf->feature == SETFEATURES_XFER && | |
779 | tf->nsect >= XFER_SW_DMA_0 && | |
780 | (id->dma_ultra || id->dma_mword || id->dma_1word)) { | |
1da177e4 | 781 | xfer_rate = args[1]; |
af10f773 BZ |
782 | if (tf->nsect > XFER_UDMA_2 && !eighty_ninty_three(drive)) { |
783 | printk(KERN_WARNING "%s: UDMA speeds >UDMA33 cannot " | |
784 | "be set\n", drive->name); | |
1da177e4 | 785 | goto abort; |
af10f773 | 786 | } |
1da177e4 LT |
787 | } |
788 | ||
5a9e77af BZ |
789 | err = ide_raw_taskfile(drive, &tfargs, buf, args[3]); |
790 | ||
791 | args[0] = tf->status; | |
792 | args[1] = tf->error; | |
793 | args[2] = tf->nsect; | |
1da177e4 LT |
794 | |
795 | if (!err && xfer_rate) { | |
796 | /* active-retuning-calls future */ | |
797 | ide_set_xfer_rate(drive, xfer_rate); | |
798 | ide_driveid_update(drive); | |
799 | } | |
800 | abort: | |
5a9e77af | 801 | if (copy_to_user((void __user *)arg, &args, 4)) |
1da177e4 | 802 | err = -EFAULT; |
5a9e77af BZ |
803 | if (buf) { |
804 | if (copy_to_user((void __user *)(arg + 4), buf, bufsize)) | |
805 | err = -EFAULT; | |
806 | kfree(buf); | |
807 | } | |
1da177e4 LT |
808 | return err; |
809 | } | |
810 | ||
1da177e4 LT |
811 | int ide_task_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg) |
812 | { | |
813 | void __user *p = (void __user *)arg; | |
814 | int err = 0; | |
14b89ef9 BZ |
815 | u8 args[7]; |
816 | ide_task_t task; | |
1da177e4 LT |
817 | |
818 | if (copy_from_user(args, p, 7)) | |
819 | return -EFAULT; | |
14b89ef9 BZ |
820 | |
821 | memset(&task, 0, sizeof(task)); | |
822 | memcpy(&task.tf_array[7], &args[1], 6); | |
823 | task.tf.command = args[0]; | |
657cc1a8 | 824 | task.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; |
14b89ef9 BZ |
825 | |
826 | err = ide_no_data_taskfile(drive, &task); | |
827 | ||
828 | args[0] = task.tf.command; | |
829 | memcpy(&args[1], &task.tf_array[7], 6); | |
830 | ||
831 | if (copy_to_user(p, args, 7)) | |
1da177e4 | 832 | err = -EFAULT; |
14b89ef9 | 833 | |
1da177e4 LT |
834 | return err; |
835 | } |