Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * linux/drivers/ide/ide-taskfile.c Version 0.38 March 05, 2003 | |
3 | * | |
4 | * Copyright (C) 2000-2002 Michael Cornwell <cornwell@acm.org> | |
5 | * Copyright (C) 2000-2002 Andre Hedrick <andre@linux-ide.org> | |
6 | * Copyright (C) 2001-2002 Klaus Smolin | |
7 | * IBM Storage Technology Division | |
8 | * Copyright (C) 2003-2004 Bartlomiej Zolnierkiewicz | |
9 | * | |
10 | * The big the bad and the ugly. | |
1da177e4 LT |
11 | */ |
12 | ||
1da177e4 LT |
13 | #include <linux/module.h> |
14 | #include <linux/types.h> | |
15 | #include <linux/string.h> | |
16 | #include <linux/kernel.h> | |
17 | #include <linux/timer.h> | |
18 | #include <linux/mm.h> | |
651c29a1 | 19 | #include <linux/sched.h> |
1da177e4 LT |
20 | #include <linux/interrupt.h> |
21 | #include <linux/major.h> | |
22 | #include <linux/errno.h> | |
23 | #include <linux/genhd.h> | |
24 | #include <linux/blkpg.h> | |
25 | #include <linux/slab.h> | |
26 | #include <linux/pci.h> | |
27 | #include <linux/delay.h> | |
28 | #include <linux/hdreg.h> | |
29 | #include <linux/ide.h> | |
30 | #include <linux/bitops.h> | |
55c16a70 | 31 | #include <linux/scatterlist.h> |
1da177e4 LT |
32 | |
33 | #include <asm/byteorder.h> | |
34 | #include <asm/irq.h> | |
35 | #include <asm/uaccess.h> | |
36 | #include <asm/io.h> | |
37 | ||
9e42237f BZ |
38 | void ide_tf_load(ide_drive_t *drive, ide_task_t *task) |
39 | { | |
40 | ide_hwif_t *hwif = drive->hwif; | |
41 | struct ide_taskfile *tf = &task->tf; | |
42 | u8 HIHI = (task->tf_flags & IDE_TFLAG_LBA48) ? 0xE0 : 0xEF; | |
43 | ||
74095a91 BZ |
44 | if (task->tf_flags & IDE_TFLAG_FLAGGED) |
45 | HIHI = 0xFF; | |
46 | ||
807e35d6 BZ |
47 | #ifdef DEBUG |
48 | printk("%s: tf: feat 0x%02x nsect 0x%02x lbal 0x%02x " | |
49 | "lbam 0x%02x lbah 0x%02x dev 0x%02x cmd 0x%02x\n", | |
50 | drive->name, tf->feature, tf->nsect, tf->lbal, | |
51 | tf->lbam, tf->lbah, tf->device, tf->command); | |
6dd9b837 BZ |
52 | printk("%s: hob: nsect 0x%02x lbal 0x%02x " |
53 | "lbam 0x%02x lbah 0x%02x\n", | |
54 | drive->name, tf->hob_nsect, tf->hob_lbal, | |
55 | tf->hob_lbam, tf->hob_lbah); | |
807e35d6 BZ |
56 | #endif |
57 | ||
81ca6919 | 58 | ide_set_irq(drive, 1); |
9e42237f BZ |
59 | |
60 | if ((task->tf_flags & IDE_TFLAG_NO_SELECT_MASK) == 0) | |
61 | SELECT_MASK(drive, 0); | |
62 | ||
74095a91 BZ |
63 | if (task->tf_flags & IDE_TFLAG_OUT_DATA) |
64 | hwif->OUTW((tf->hob_data << 8) | tf->data, IDE_DATA_REG); | |
65 | ||
66 | if (task->tf_flags & IDE_TFLAG_OUT_HOB_FEATURE) | |
9e42237f | 67 | hwif->OUTB(tf->hob_feature, IDE_FEATURE_REG); |
74095a91 | 68 | if (task->tf_flags & IDE_TFLAG_OUT_HOB_NSECT) |
9e42237f | 69 | hwif->OUTB(tf->hob_nsect, IDE_NSECTOR_REG); |
74095a91 | 70 | if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAL) |
9e42237f | 71 | hwif->OUTB(tf->hob_lbal, IDE_SECTOR_REG); |
74095a91 | 72 | if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAM) |
9e42237f | 73 | hwif->OUTB(tf->hob_lbam, IDE_LCYL_REG); |
74095a91 | 74 | if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAH) |
9e42237f | 75 | hwif->OUTB(tf->hob_lbah, IDE_HCYL_REG); |
9e42237f | 76 | |
74095a91 BZ |
77 | if (task->tf_flags & IDE_TFLAG_OUT_FEATURE) |
78 | hwif->OUTB(tf->feature, IDE_FEATURE_REG); | |
79 | if (task->tf_flags & IDE_TFLAG_OUT_NSECT) | |
80 | hwif->OUTB(tf->nsect, IDE_NSECTOR_REG); | |
81 | if (task->tf_flags & IDE_TFLAG_OUT_LBAL) | |
82 | hwif->OUTB(tf->lbal, IDE_SECTOR_REG); | |
83 | if (task->tf_flags & IDE_TFLAG_OUT_LBAM) | |
84 | hwif->OUTB(tf->lbam, IDE_LCYL_REG); | |
85 | if (task->tf_flags & IDE_TFLAG_OUT_LBAH) | |
86 | hwif->OUTB(tf->lbah, IDE_HCYL_REG); | |
9e42237f | 87 | |
807e35d6 BZ |
88 | if (task->tf_flags & IDE_TFLAG_OUT_DEVICE) |
89 | hwif->OUTB((tf->device & HIHI) | drive->select.all, IDE_SELECT_REG); | |
9e42237f BZ |
90 | } |
91 | ||
1da177e4 LT |
92 | int taskfile_lib_get_identify (ide_drive_t *drive, u8 *buf) |
93 | { | |
94 | ide_task_t args; | |
650d841d | 95 | |
1da177e4 | 96 | memset(&args, 0, sizeof(ide_task_t)); |
650d841d | 97 | args.tf.nsect = 0x01; |
1da177e4 | 98 | if (drive->media == ide_disk) |
650d841d | 99 | args.tf.command = WIN_IDENTIFY; |
1da177e4 | 100 | else |
650d841d | 101 | args.tf.command = WIN_PIDENTIFY; |
ac026ff2 BZ |
102 | args.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE; |
103 | args.data_phase = TASKFILE_IN; | |
ac026ff2 | 104 | return ide_raw_taskfile(drive, &args, buf, 1); |
1da177e4 LT |
105 | } |
106 | ||
74095a91 BZ |
107 | static int inline task_dma_ok(ide_task_t *task) |
108 | { | |
f6e29e35 | 109 | if (blk_fs_request(task->rq) || (task->tf_flags & IDE_TFLAG_FLAGGED)) |
74095a91 BZ |
110 | return 1; |
111 | ||
112 | switch (task->tf.command) { | |
113 | case WIN_WRITEDMA_ONCE: | |
114 | case WIN_WRITEDMA: | |
115 | case WIN_WRITEDMA_EXT: | |
116 | case WIN_READDMA_ONCE: | |
117 | case WIN_READDMA: | |
118 | case WIN_READDMA_EXT: | |
119 | case WIN_IDENTIFY_DMA: | |
120 | return 1; | |
121 | } | |
122 | ||
123 | return 0; | |
124 | } | |
125 | ||
1192e528 | 126 | static ide_startstop_t task_no_data_intr(ide_drive_t *); |
57d7366b BZ |
127 | static ide_startstop_t set_geometry_intr(ide_drive_t *); |
128 | static ide_startstop_t recal_intr(ide_drive_t *); | |
129 | static ide_startstop_t set_multmode_intr(ide_drive_t *); | |
f6e29e35 BZ |
130 | static ide_startstop_t pre_task_out_intr(ide_drive_t *, struct request *); |
131 | static ide_startstop_t task_in_intr(ide_drive_t *); | |
1192e528 | 132 | |
1da177e4 LT |
133 | ide_startstop_t do_rw_taskfile (ide_drive_t *drive, ide_task_t *task) |
134 | { | |
135 | ide_hwif_t *hwif = HWIF(drive); | |
650d841d | 136 | struct ide_taskfile *tf = &task->tf; |
57d7366b | 137 | ide_handler_t *handler = NULL; |
1da177e4 | 138 | |
1edee60e BZ |
139 | if (task->data_phase == TASKFILE_MULTI_IN || |
140 | task->data_phase == TASKFILE_MULTI_OUT) { | |
141 | if (!drive->mult_count) { | |
142 | printk(KERN_ERR "%s: multimode not set!\n", | |
143 | drive->name); | |
144 | return ide_stopped; | |
145 | } | |
146 | } | |
147 | ||
148 | if (task->tf_flags & IDE_TFLAG_FLAGGED) | |
149 | task->tf_flags |= IDE_TFLAG_FLAGGED_SET_IN_FLAGS; | |
150 | ||
f6e29e35 BZ |
151 | if ((task->tf_flags & IDE_TFLAG_DMA_PIO_FALLBACK) == 0) |
152 | ide_tf_load(drive, task); | |
1da177e4 | 153 | |
10d90157 BZ |
154 | switch (task->data_phase) { |
155 | case TASKFILE_MULTI_OUT: | |
156 | case TASKFILE_OUT: | |
157 | hwif->OUTBSYNC(drive, tf->command, IDE_COMMAND_REG); | |
158 | ndelay(400); /* FIXME */ | |
159 | return pre_task_out_intr(drive, task->rq); | |
160 | case TASKFILE_MULTI_IN: | |
161 | case TASKFILE_IN: | |
57d7366b | 162 | handler = task_in_intr; |
1192e528 | 163 | /* fall-through */ |
10d90157 | 164 | case TASKFILE_NO_DATA: |
57d7366b BZ |
165 | if (handler == NULL) |
166 | handler = task_no_data_intr; | |
1192e528 | 167 | /* WIN_{SPECIFY,RESTORE,SETMULT} use custom handlers */ |
57d7366b BZ |
168 | if (task->tf_flags & IDE_TFLAG_CUSTOM_HANDLER) { |
169 | switch (tf->command) { | |
170 | case WIN_SPECIFY: handler = set_geometry_intr; break; | |
171 | case WIN_RESTORE: handler = recal_intr; break; | |
172 | case WIN_SETMULT: handler = set_multmode_intr; break; | |
173 | } | |
174 | } | |
175 | ide_execute_command(drive, tf->command, handler, | |
176 | WAIT_WORSTCASE, NULL); | |
1da177e4 | 177 | return ide_started; |
10d90157 BZ |
178 | default: |
179 | if (task_dma_ok(task) == 0 || drive->using_dma == 0 || | |
180 | hwif->dma_setup(drive)) | |
181 | return ide_stopped; | |
74095a91 BZ |
182 | hwif->dma_exec_cmd(drive, tf->command); |
183 | hwif->dma_start(drive); | |
184 | return ide_started; | |
1da177e4 | 185 | } |
1da177e4 | 186 | } |
f6e29e35 | 187 | EXPORT_SYMBOL_GPL(do_rw_taskfile); |
1da177e4 | 188 | |
1da177e4 LT |
189 | /* |
190 | * set_multmode_intr() is invoked on completion of a WIN_SETMULT cmd. | |
191 | */ | |
57d7366b | 192 | static ide_startstop_t set_multmode_intr(ide_drive_t *drive) |
1da177e4 LT |
193 | { |
194 | ide_hwif_t *hwif = HWIF(drive); | |
195 | u8 stat; | |
196 | ||
197 | if (OK_STAT(stat = hwif->INB(IDE_STATUS_REG),READY_STAT,BAD_STAT)) { | |
198 | drive->mult_count = drive->mult_req; | |
199 | } else { | |
200 | drive->mult_req = drive->mult_count = 0; | |
201 | drive->special.b.recalibrate = 1; | |
202 | (void) ide_dump_status(drive, "set_multmode", stat); | |
203 | } | |
204 | return ide_stopped; | |
205 | } | |
206 | ||
207 | /* | |
208 | * set_geometry_intr() is invoked on completion of a WIN_SPECIFY cmd. | |
209 | */ | |
57d7366b | 210 | static ide_startstop_t set_geometry_intr(ide_drive_t *drive) |
1da177e4 LT |
211 | { |
212 | ide_hwif_t *hwif = HWIF(drive); | |
213 | int retries = 5; | |
214 | u8 stat; | |
215 | ||
216 | while (((stat = hwif->INB(IDE_STATUS_REG)) & BUSY_STAT) && retries--) | |
217 | udelay(10); | |
218 | ||
219 | if (OK_STAT(stat, READY_STAT, BAD_STAT)) | |
220 | return ide_stopped; | |
221 | ||
222 | if (stat & (ERR_STAT|DRQ_STAT)) | |
223 | return ide_error(drive, "set_geometry_intr", stat); | |
224 | ||
125e1874 | 225 | BUG_ON(HWGROUP(drive)->handler != NULL); |
1da177e4 LT |
226 | ide_set_handler(drive, &set_geometry_intr, WAIT_WORSTCASE, NULL); |
227 | return ide_started; | |
228 | } | |
229 | ||
230 | /* | |
231 | * recal_intr() is invoked on completion of a WIN_RESTORE (recalibrate) cmd. | |
232 | */ | |
57d7366b | 233 | static ide_startstop_t recal_intr(ide_drive_t *drive) |
1da177e4 LT |
234 | { |
235 | ide_hwif_t *hwif = HWIF(drive); | |
236 | u8 stat; | |
237 | ||
238 | if (!OK_STAT(stat = hwif->INB(IDE_STATUS_REG), READY_STAT, BAD_STAT)) | |
239 | return ide_error(drive, "recal_intr", stat); | |
240 | return ide_stopped; | |
241 | } | |
242 | ||
243 | /* | |
244 | * Handler for commands without a data phase | |
245 | */ | |
1192e528 | 246 | static ide_startstop_t task_no_data_intr(ide_drive_t *drive) |
1da177e4 LT |
247 | { |
248 | ide_task_t *args = HWGROUP(drive)->rq->special; | |
249 | ide_hwif_t *hwif = HWIF(drive); | |
250 | u8 stat; | |
251 | ||
366c7f55 | 252 | local_irq_enable_in_hardirq(); |
1da177e4 LT |
253 | if (!OK_STAT(stat = hwif->INB(IDE_STATUS_REG),READY_STAT,BAD_STAT)) { |
254 | return ide_error(drive, "task_no_data_intr", stat); | |
255 | /* calls ide_end_drive_cmd */ | |
256 | } | |
257 | if (args) | |
258 | ide_end_drive_cmd(drive, stat, hwif->INB(IDE_ERROR_REG)); | |
259 | ||
260 | return ide_stopped; | |
261 | } | |
262 | ||
1da177e4 LT |
263 | static u8 wait_drive_not_busy(ide_drive_t *drive) |
264 | { | |
265 | ide_hwif_t *hwif = HWIF(drive); | |
b42fa133 | 266 | int retries; |
1da177e4 LT |
267 | u8 stat; |
268 | ||
269 | /* | |
270 | * Last sector was transfered, wait until drive is ready. | |
271 | * This can take up to 10 usec, but we will wait max 1 ms | |
272 | * (drive_cmd_intr() waits that long). | |
273 | */ | |
b42fa133 MY |
274 | for (retries = 0; retries < 100; retries++) { |
275 | if ((stat = hwif->INB(IDE_STATUS_REG)) & BUSY_STAT) | |
276 | udelay(10); | |
277 | else | |
278 | break; | |
279 | } | |
1da177e4 | 280 | |
b42fa133 | 281 | if (stat & BUSY_STAT) |
1da177e4 LT |
282 | printk(KERN_ERR "%s: drive still BUSY!\n", drive->name); |
283 | ||
284 | return stat; | |
285 | } | |
286 | ||
287 | static void ide_pio_sector(ide_drive_t *drive, unsigned int write) | |
288 | { | |
289 | ide_hwif_t *hwif = drive->hwif; | |
290 | struct scatterlist *sg = hwif->sg_table; | |
55c16a70 | 291 | struct scatterlist *cursg = hwif->cursg; |
1da177e4 LT |
292 | struct page *page; |
293 | #ifdef CONFIG_HIGHMEM | |
294 | unsigned long flags; | |
295 | #endif | |
296 | unsigned int offset; | |
297 | u8 *buf; | |
298 | ||
55c16a70 JA |
299 | cursg = hwif->cursg; |
300 | if (!cursg) { | |
301 | cursg = sg; | |
302 | hwif->cursg = sg; | |
303 | } | |
304 | ||
45711f1a | 305 | page = sg_page(cursg); |
55c16a70 | 306 | offset = cursg->offset + hwif->cursg_ofs * SECTOR_SIZE; |
1da177e4 LT |
307 | |
308 | /* get the current page and offset */ | |
309 | page = nth_page(page, (offset >> PAGE_SHIFT)); | |
310 | offset %= PAGE_SIZE; | |
311 | ||
312 | #ifdef CONFIG_HIGHMEM | |
313 | local_irq_save(flags); | |
314 | #endif | |
315 | buf = kmap_atomic(page, KM_BIO_SRC_IRQ) + offset; | |
316 | ||
317 | hwif->nleft--; | |
318 | hwif->cursg_ofs++; | |
319 | ||
55c16a70 JA |
320 | if ((hwif->cursg_ofs * SECTOR_SIZE) == cursg->length) { |
321 | hwif->cursg = sg_next(hwif->cursg); | |
1da177e4 LT |
322 | hwif->cursg_ofs = 0; |
323 | } | |
324 | ||
325 | /* do the actual data transfer */ | |
326 | if (write) | |
9e47be0c | 327 | hwif->ata_output_data(drive, buf, SECTOR_WORDS); |
1da177e4 | 328 | else |
9e47be0c | 329 | hwif->ata_input_data(drive, buf, SECTOR_WORDS); |
1da177e4 LT |
330 | |
331 | kunmap_atomic(buf, KM_BIO_SRC_IRQ); | |
332 | #ifdef CONFIG_HIGHMEM | |
333 | local_irq_restore(flags); | |
334 | #endif | |
335 | } | |
336 | ||
337 | static void ide_pio_multi(ide_drive_t *drive, unsigned int write) | |
338 | { | |
339 | unsigned int nsect; | |
340 | ||
341 | nsect = min_t(unsigned int, drive->hwif->nleft, drive->mult_count); | |
342 | while (nsect--) | |
343 | ide_pio_sector(drive, write); | |
344 | } | |
345 | ||
858119e1 | 346 | static void ide_pio_datablock(ide_drive_t *drive, struct request *rq, |
1da177e4 LT |
347 | unsigned int write) |
348 | { | |
35cf2b94 TH |
349 | u8 saved_io_32bit = drive->io_32bit; |
350 | ||
1da177e4 LT |
351 | if (rq->bio) /* fs request */ |
352 | rq->errors = 0; | |
353 | ||
35cf2b94 TH |
354 | if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) { |
355 | ide_task_t *task = rq->special; | |
356 | ||
357 | if (task->tf_flags & IDE_TFLAG_IO_16BIT) | |
358 | drive->io_32bit = 0; | |
359 | } | |
360 | ||
651c29a1 AM |
361 | touch_softlockup_watchdog(); |
362 | ||
1da177e4 LT |
363 | switch (drive->hwif->data_phase) { |
364 | case TASKFILE_MULTI_IN: | |
365 | case TASKFILE_MULTI_OUT: | |
366 | ide_pio_multi(drive, write); | |
367 | break; | |
368 | default: | |
369 | ide_pio_sector(drive, write); | |
370 | break; | |
371 | } | |
35cf2b94 TH |
372 | |
373 | drive->io_32bit = saved_io_32bit; | |
1da177e4 LT |
374 | } |
375 | ||
376 | static ide_startstop_t task_error(ide_drive_t *drive, struct request *rq, | |
377 | const char *s, u8 stat) | |
378 | { | |
379 | if (rq->bio) { | |
380 | ide_hwif_t *hwif = drive->hwif; | |
381 | int sectors = hwif->nsect - hwif->nleft; | |
382 | ||
383 | switch (hwif->data_phase) { | |
384 | case TASKFILE_IN: | |
385 | if (hwif->nleft) | |
386 | break; | |
387 | /* fall through */ | |
388 | case TASKFILE_OUT: | |
389 | sectors--; | |
390 | break; | |
391 | case TASKFILE_MULTI_IN: | |
392 | if (hwif->nleft) | |
393 | break; | |
394 | /* fall through */ | |
395 | case TASKFILE_MULTI_OUT: | |
396 | sectors -= drive->mult_count; | |
397 | default: | |
398 | break; | |
399 | } | |
400 | ||
401 | if (sectors > 0) { | |
402 | ide_driver_t *drv; | |
403 | ||
404 | drv = *(ide_driver_t **)rq->rq_disk->private_data; | |
405 | drv->end_request(drive, 1, sectors); | |
406 | } | |
407 | } | |
408 | return ide_error(drive, s, stat); | |
409 | } | |
410 | ||
411 | static void task_end_request(ide_drive_t *drive, struct request *rq, u8 stat) | |
412 | { | |
55c16a70 JA |
413 | HWIF(drive)->cursg = NULL; |
414 | ||
4aff5e23 | 415 | if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) { |
1da177e4 LT |
416 | ide_task_t *task = rq->special; |
417 | ||
74095a91 | 418 | if (task->tf_flags & IDE_TFLAG_FLAGGED) { |
1da177e4 LT |
419 | u8 err = drive->hwif->INB(IDE_ERROR_REG); |
420 | ide_end_drive_cmd(drive, stat, err); | |
421 | return; | |
422 | } | |
423 | } | |
424 | ||
03731fbd RP |
425 | if (rq->rq_disk) { |
426 | ide_driver_t *drv; | |
427 | ||
428 | drv = *(ide_driver_t **)rq->rq_disk->private_data;; | |
429 | drv->end_request(drive, 1, rq->hard_nr_sectors); | |
430 | } else | |
431 | ide_end_request(drive, 1, rq->hard_nr_sectors); | |
1da177e4 LT |
432 | } |
433 | ||
434 | /* | |
435 | * Handler for command with PIO data-in phase (Read/Read Multiple). | |
436 | */ | |
f6e29e35 | 437 | static ide_startstop_t task_in_intr(ide_drive_t *drive) |
1da177e4 LT |
438 | { |
439 | ide_hwif_t *hwif = drive->hwif; | |
440 | struct request *rq = HWGROUP(drive)->rq; | |
441 | u8 stat = hwif->INB(IDE_STATUS_REG); | |
442 | ||
443 | /* new way for dealing with premature shared PCI interrupts */ | |
444 | if (!OK_STAT(stat, DATA_READY, BAD_R_STAT)) { | |
445 | if (stat & (ERR_STAT | DRQ_STAT)) | |
446 | return task_error(drive, rq, __FUNCTION__, stat); | |
447 | /* No data yet, so wait for another IRQ. */ | |
448 | ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL); | |
449 | return ide_started; | |
450 | } | |
451 | ||
452 | ide_pio_datablock(drive, rq, 0); | |
453 | ||
454 | /* If it was the last datablock check status and finish transfer. */ | |
455 | if (!hwif->nleft) { | |
456 | stat = wait_drive_not_busy(drive); | |
457 | if (!OK_STAT(stat, 0, BAD_R_STAT)) | |
458 | return task_error(drive, rq, __FUNCTION__, stat); | |
459 | task_end_request(drive, rq, stat); | |
460 | return ide_stopped; | |
461 | } | |
462 | ||
463 | /* Still data left to transfer. */ | |
464 | ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL); | |
465 | ||
466 | return ide_started; | |
467 | } | |
1da177e4 LT |
468 | |
469 | /* | |
470 | * Handler for command with PIO data-out phase (Write/Write Multiple). | |
471 | */ | |
472 | static ide_startstop_t task_out_intr (ide_drive_t *drive) | |
473 | { | |
474 | ide_hwif_t *hwif = drive->hwif; | |
475 | struct request *rq = HWGROUP(drive)->rq; | |
476 | u8 stat = hwif->INB(IDE_STATUS_REG); | |
477 | ||
478 | if (!OK_STAT(stat, DRIVE_READY, drive->bad_wstat)) | |
479 | return task_error(drive, rq, __FUNCTION__, stat); | |
480 | ||
481 | /* Deal with unexpected ATA data phase. */ | |
482 | if (((stat & DRQ_STAT) == 0) ^ !hwif->nleft) | |
483 | return task_error(drive, rq, __FUNCTION__, stat); | |
484 | ||
485 | if (!hwif->nleft) { | |
486 | task_end_request(drive, rq, stat); | |
487 | return ide_stopped; | |
488 | } | |
489 | ||
490 | /* Still data left to transfer. */ | |
491 | ide_pio_datablock(drive, rq, 1); | |
492 | ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL); | |
493 | ||
494 | return ide_started; | |
495 | } | |
496 | ||
f6e29e35 | 497 | static ide_startstop_t pre_task_out_intr(ide_drive_t *drive, struct request *rq) |
1da177e4 LT |
498 | { |
499 | ide_startstop_t startstop; | |
500 | ||
501 | if (ide_wait_stat(&startstop, drive, DATA_READY, | |
502 | drive->bad_wstat, WAIT_DRQ)) { | |
503 | printk(KERN_ERR "%s: no DRQ after issuing %sWRITE%s\n", | |
504 | drive->name, | |
505 | drive->hwif->data_phase ? "MULT" : "", | |
506 | drive->addressing ? "_EXT" : ""); | |
507 | return startstop; | |
508 | } | |
509 | ||
510 | if (!drive->unmask) | |
511 | local_irq_disable(); | |
512 | ||
513 | ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL); | |
514 | ide_pio_datablock(drive, rq, 1); | |
515 | ||
516 | return ide_started; | |
517 | } | |
1da177e4 | 518 | |
ac026ff2 | 519 | int ide_raw_taskfile(ide_drive_t *drive, ide_task_t *task, u8 *buf, u16 nsect) |
1da177e4 LT |
520 | { |
521 | struct request rq; | |
522 | ||
523 | memset(&rq, 0, sizeof(rq)); | |
02ac2460 | 524 | rq.ref_count = 1; |
4aff5e23 | 525 | rq.cmd_type = REQ_TYPE_ATA_TASKFILE; |
1da177e4 LT |
526 | rq.buffer = buf; |
527 | ||
528 | /* | |
529 | * (ks) We transfer currently only whole sectors. | |
530 | * This is suffient for now. But, it would be great, | |
531 | * if we would find a solution to transfer any size. | |
532 | * To support special commands like READ LONG. | |
533 | */ | |
ac026ff2 BZ |
534 | rq.hard_nr_sectors = rq.nr_sectors = nsect; |
535 | rq.hard_cur_sectors = rq.current_nr_sectors = nsect; | |
1da177e4 | 536 | |
ac026ff2 BZ |
537 | if (task->tf_flags & IDE_TFLAG_WRITE) |
538 | rq.cmd_flags |= REQ_RW; | |
1da177e4 | 539 | |
ac026ff2 BZ |
540 | rq.special = task; |
541 | task->rq = &rq; | |
1da177e4 | 542 | |
1da177e4 LT |
543 | return ide_do_drive_cmd(drive, &rq, ide_wait); |
544 | } | |
545 | ||
1da177e4 LT |
546 | EXPORT_SYMBOL(ide_raw_taskfile); |
547 | ||
9a3c49be BZ |
548 | int ide_no_data_taskfile(ide_drive_t *drive, ide_task_t *task) |
549 | { | |
ac026ff2 | 550 | task->data_phase = TASKFILE_NO_DATA; |
9a3c49be | 551 | |
ac026ff2 | 552 | return ide_raw_taskfile(drive, task, NULL, 0); |
9a3c49be BZ |
553 | } |
554 | EXPORT_SYMBOL_GPL(ide_no_data_taskfile); | |
555 | ||
26a5b040 | 556 | #ifdef CONFIG_IDE_TASK_IOCTL |
1da177e4 LT |
557 | int ide_taskfile_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg) |
558 | { | |
559 | ide_task_request_t *req_task; | |
560 | ide_task_t args; | |
561 | u8 *outbuf = NULL; | |
562 | u8 *inbuf = NULL; | |
ac026ff2 | 563 | u8 *data_buf = NULL; |
1da177e4 LT |
564 | int err = 0; |
565 | int tasksize = sizeof(struct ide_task_request_s); | |
3a42bb22 AC |
566 | unsigned int taskin = 0; |
567 | unsigned int taskout = 0; | |
ac026ff2 | 568 | u16 nsect = 0; |
1da177e4 LT |
569 | char __user *buf = (char __user *)arg; |
570 | ||
571 | // printk("IDE Taskfile ...\n"); | |
572 | ||
f5e3c2fa | 573 | req_task = kzalloc(tasksize, GFP_KERNEL); |
1da177e4 | 574 | if (req_task == NULL) return -ENOMEM; |
1da177e4 LT |
575 | if (copy_from_user(req_task, buf, tasksize)) { |
576 | kfree(req_task); | |
577 | return -EFAULT; | |
578 | } | |
579 | ||
3a42bb22 AC |
580 | taskout = req_task->out_size; |
581 | taskin = req_task->in_size; | |
582 | ||
583 | if (taskin > 65536 || taskout > 65536) { | |
584 | err = -EINVAL; | |
585 | goto abort; | |
586 | } | |
1da177e4 LT |
587 | |
588 | if (taskout) { | |
589 | int outtotal = tasksize; | |
f5e3c2fa | 590 | outbuf = kzalloc(taskout, GFP_KERNEL); |
1da177e4 LT |
591 | if (outbuf == NULL) { |
592 | err = -ENOMEM; | |
593 | goto abort; | |
594 | } | |
1da177e4 LT |
595 | if (copy_from_user(outbuf, buf + outtotal, taskout)) { |
596 | err = -EFAULT; | |
597 | goto abort; | |
598 | } | |
599 | } | |
600 | ||
601 | if (taskin) { | |
602 | int intotal = tasksize + taskout; | |
f5e3c2fa | 603 | inbuf = kzalloc(taskin, GFP_KERNEL); |
1da177e4 LT |
604 | if (inbuf == NULL) { |
605 | err = -ENOMEM; | |
606 | goto abort; | |
607 | } | |
1da177e4 LT |
608 | if (copy_from_user(inbuf, buf + intotal, taskin)) { |
609 | err = -EFAULT; | |
610 | goto abort; | |
611 | } | |
612 | } | |
613 | ||
614 | memset(&args, 0, sizeof(ide_task_t)); | |
1da177e4 | 615 | |
650d841d BZ |
616 | memcpy(&args.tf_array[0], req_task->hob_ports, HDIO_DRIVE_HOB_HDR_SIZE - 2); |
617 | memcpy(&args.tf_array[6], req_task->io_ports, HDIO_DRIVE_TASK_HDR_SIZE); | |
866e2ec9 BZ |
618 | |
619 | args.data_phase = req_task->data_phase; | |
1da177e4 | 620 | |
35cf2b94 | 621 | args.tf_flags = IDE_TFLAG_IO_16BIT | IDE_TFLAG_OUT_DEVICE; |
a3bbb9d8 BZ |
622 | if (drive->addressing == 1) |
623 | args.tf_flags |= IDE_TFLAG_LBA48; | |
624 | ||
74095a91 BZ |
625 | if (req_task->out_flags.all) { |
626 | args.tf_flags |= IDE_TFLAG_FLAGGED; | |
627 | ||
628 | if (req_task->out_flags.b.data) | |
629 | args.tf_flags |= IDE_TFLAG_OUT_DATA; | |
630 | ||
631 | if (req_task->out_flags.b.nsector_hob) | |
632 | args.tf_flags |= IDE_TFLAG_OUT_HOB_NSECT; | |
633 | if (req_task->out_flags.b.sector_hob) | |
634 | args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAL; | |
635 | if (req_task->out_flags.b.lcyl_hob) | |
636 | args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAM; | |
637 | if (req_task->out_flags.b.hcyl_hob) | |
638 | args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAH; | |
639 | ||
640 | if (req_task->out_flags.b.error_feature) | |
641 | args.tf_flags |= IDE_TFLAG_OUT_FEATURE; | |
642 | if (req_task->out_flags.b.nsector) | |
643 | args.tf_flags |= IDE_TFLAG_OUT_NSECT; | |
644 | if (req_task->out_flags.b.sector) | |
645 | args.tf_flags |= IDE_TFLAG_OUT_LBAL; | |
646 | if (req_task->out_flags.b.lcyl) | |
647 | args.tf_flags |= IDE_TFLAG_OUT_LBAM; | |
648 | if (req_task->out_flags.b.hcyl) | |
649 | args.tf_flags |= IDE_TFLAG_OUT_LBAH; | |
a3bbb9d8 BZ |
650 | } else { |
651 | args.tf_flags |= IDE_TFLAG_OUT_TF; | |
652 | if (args.tf_flags & IDE_TFLAG_LBA48) | |
653 | args.tf_flags |= IDE_TFLAG_OUT_HOB; | |
74095a91 BZ |
654 | } |
655 | ||
866e2ec9 BZ |
656 | if (req_task->in_flags.b.data) |
657 | args.tf_flags |= IDE_TFLAG_IN_DATA; | |
658 | ||
1da177e4 | 659 | switch(req_task->data_phase) { |
1da177e4 LT |
660 | case TASKFILE_MULTI_OUT: |
661 | if (!drive->mult_count) { | |
662 | /* (hs): give up if multcount is not set */ | |
663 | printk(KERN_ERR "%s: %s Multimode Write " \ | |
664 | "multcount is not set\n", | |
665 | drive->name, __FUNCTION__); | |
666 | err = -EPERM; | |
667 | goto abort; | |
668 | } | |
669 | /* fall through */ | |
670 | case TASKFILE_OUT: | |
ac026ff2 BZ |
671 | /* fall through */ |
672 | case TASKFILE_OUT_DMAQ: | |
673 | case TASKFILE_OUT_DMA: | |
674 | nsect = taskout / SECTOR_SIZE; | |
675 | data_buf = outbuf; | |
1da177e4 LT |
676 | break; |
677 | case TASKFILE_MULTI_IN: | |
678 | if (!drive->mult_count) { | |
679 | /* (hs): give up if multcount is not set */ | |
680 | printk(KERN_ERR "%s: %s Multimode Read failure " \ | |
681 | "multcount is not set\n", | |
682 | drive->name, __FUNCTION__); | |
683 | err = -EPERM; | |
684 | goto abort; | |
685 | } | |
686 | /* fall through */ | |
687 | case TASKFILE_IN: | |
ac026ff2 BZ |
688 | /* fall through */ |
689 | case TASKFILE_IN_DMAQ: | |
690 | case TASKFILE_IN_DMA: | |
691 | nsect = taskin / SECTOR_SIZE; | |
692 | data_buf = inbuf; | |
1da177e4 LT |
693 | break; |
694 | case TASKFILE_NO_DATA: | |
1da177e4 LT |
695 | break; |
696 | default: | |
697 | err = -EFAULT; | |
698 | goto abort; | |
699 | } | |
700 | ||
ac026ff2 BZ |
701 | if (req_task->req_cmd == IDE_DRIVE_TASK_NO_DATA) |
702 | nsect = 0; | |
703 | else if (!nsect) { | |
704 | nsect = (args.tf.hob_nsect << 8) | args.tf.nsect; | |
705 | ||
706 | if (!nsect) { | |
707 | printk(KERN_ERR "%s: in/out command without data\n", | |
708 | drive->name); | |
709 | err = -EFAULT; | |
710 | goto abort; | |
711 | } | |
712 | } | |
713 | ||
714 | if (req_task->req_cmd == IDE_DRIVE_TASK_RAW_WRITE) | |
715 | args.tf_flags |= IDE_TFLAG_WRITE; | |
716 | ||
717 | err = ide_raw_taskfile(drive, &args, data_buf, nsect); | |
718 | ||
650d841d BZ |
719 | memcpy(req_task->hob_ports, &args.tf_array[0], HDIO_DRIVE_HOB_HDR_SIZE - 2); |
720 | memcpy(req_task->io_ports, &args.tf_array[6], HDIO_DRIVE_TASK_HDR_SIZE); | |
866e2ec9 BZ |
721 | |
722 | if ((args.tf_flags & IDE_TFLAG_FLAGGED_SET_IN_FLAGS) && | |
723 | req_task->in_flags.all == 0) { | |
724 | req_task->in_flags.all = IDE_TASKFILE_STD_IN_FLAGS; | |
725 | if (drive->addressing == 1) | |
726 | req_task->in_flags.all |= (IDE_HOB_STD_IN_FLAGS << 8); | |
727 | } | |
1da177e4 LT |
728 | |
729 | if (copy_to_user(buf, req_task, tasksize)) { | |
730 | err = -EFAULT; | |
731 | goto abort; | |
732 | } | |
733 | if (taskout) { | |
734 | int outtotal = tasksize; | |
735 | if (copy_to_user(buf + outtotal, outbuf, taskout)) { | |
736 | err = -EFAULT; | |
737 | goto abort; | |
738 | } | |
739 | } | |
740 | if (taskin) { | |
741 | int intotal = tasksize + taskout; | |
742 | if (copy_to_user(buf + intotal, inbuf, taskin)) { | |
743 | err = -EFAULT; | |
744 | goto abort; | |
745 | } | |
746 | } | |
747 | abort: | |
748 | kfree(req_task); | |
6044ec88 JJ |
749 | kfree(outbuf); |
750 | kfree(inbuf); | |
1da177e4 LT |
751 | |
752 | // printk("IDE Taskfile ioctl ended. rc = %i\n", err); | |
753 | ||
1da177e4 LT |
754 | return err; |
755 | } | |
26a5b040 | 756 | #endif |
1da177e4 LT |
757 | |
758 | int ide_wait_cmd (ide_drive_t *drive, u8 cmd, u8 nsect, u8 feature, u8 sectors, u8 *buf) | |
759 | { | |
760 | struct request rq; | |
761 | u8 buffer[4]; | |
762 | ||
763 | if (!buf) | |
764 | buf = buffer; | |
765 | memset(buf, 0, 4 + SECTOR_WORDS * 4 * sectors); | |
766 | ide_init_drive_cmd(&rq); | |
767 | rq.buffer = buf; | |
768 | *buf++ = cmd; | |
769 | *buf++ = nsect; | |
770 | *buf++ = feature; | |
771 | *buf++ = sectors; | |
772 | return ide_do_drive_cmd(drive, &rq, ide_wait); | |
773 | } | |
774 | ||
1da177e4 LT |
775 | int ide_cmd_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg) |
776 | { | |
777 | int err = 0; | |
778 | u8 args[4], *argbuf = args; | |
779 | u8 xfer_rate = 0; | |
780 | int argsize = 4; | |
781 | ide_task_t tfargs; | |
650d841d | 782 | struct ide_taskfile *tf = &tfargs.tf; |
1da177e4 LT |
783 | |
784 | if (NULL == (void *) arg) { | |
785 | struct request rq; | |
786 | ide_init_drive_cmd(&rq); | |
787 | return ide_do_drive_cmd(drive, &rq, ide_wait); | |
788 | } | |
789 | ||
790 | if (copy_from_user(args, (void __user *)arg, 4)) | |
791 | return -EFAULT; | |
792 | ||
793 | memset(&tfargs, 0, sizeof(ide_task_t)); | |
650d841d BZ |
794 | tf->feature = args[2]; |
795 | tf->nsect = args[3]; | |
796 | tf->lbal = args[1]; | |
797 | tf->command = args[0]; | |
1da177e4 LT |
798 | |
799 | if (args[3]) { | |
800 | argsize = 4 + (SECTOR_WORDS * 4 * args[3]); | |
f5e3c2fa | 801 | argbuf = kzalloc(argsize, GFP_KERNEL); |
1da177e4 LT |
802 | if (argbuf == NULL) |
803 | return -ENOMEM; | |
1da177e4 LT |
804 | } |
805 | if (set_transfer(drive, &tfargs)) { | |
806 | xfer_rate = args[1]; | |
807 | if (ide_ata66_check(drive, &tfargs)) | |
808 | goto abort; | |
809 | } | |
810 | ||
811 | err = ide_wait_cmd(drive, args[0], args[1], args[2], args[3], argbuf); | |
812 | ||
813 | if (!err && xfer_rate) { | |
814 | /* active-retuning-calls future */ | |
815 | ide_set_xfer_rate(drive, xfer_rate); | |
816 | ide_driveid_update(drive); | |
817 | } | |
818 | abort: | |
819 | if (copy_to_user((void __user *)arg, argbuf, argsize)) | |
820 | err = -EFAULT; | |
821 | if (argsize > 4) | |
822 | kfree(argbuf); | |
823 | return err; | |
824 | } | |
825 | ||
1da177e4 LT |
826 | int ide_task_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg) |
827 | { | |
828 | void __user *p = (void __user *)arg; | |
829 | int err = 0; | |
14b89ef9 BZ |
830 | u8 args[7]; |
831 | ide_task_t task; | |
1da177e4 LT |
832 | |
833 | if (copy_from_user(args, p, 7)) | |
834 | return -EFAULT; | |
14b89ef9 BZ |
835 | |
836 | memset(&task, 0, sizeof(task)); | |
837 | memcpy(&task.tf_array[7], &args[1], 6); | |
838 | task.tf.command = args[0]; | |
839 | task.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE; | |
840 | ||
841 | err = ide_no_data_taskfile(drive, &task); | |
842 | ||
843 | args[0] = task.tf.command; | |
844 | memcpy(&args[1], &task.tf_array[7], 6); | |
845 | ||
846 | if (copy_to_user(p, args, 7)) | |
1da177e4 | 847 | err = -EFAULT; |
14b89ef9 | 848 | |
1da177e4 LT |
849 | return err; |
850 | } |