]>
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 | ||
9e42237f BZ |
36 | void ide_tf_load(ide_drive_t *drive, ide_task_t *task) |
37 | { | |
38 | ide_hwif_t *hwif = drive->hwif; | |
39 | struct ide_taskfile *tf = &task->tf; | |
40 | u8 HIHI = (task->tf_flags & IDE_TFLAG_LBA48) ? 0xE0 : 0xEF; | |
41 | ||
74095a91 BZ |
42 | if (task->tf_flags & IDE_TFLAG_FLAGGED) |
43 | HIHI = 0xFF; | |
44 | ||
807e35d6 BZ |
45 | #ifdef DEBUG |
46 | printk("%s: tf: feat 0x%02x nsect 0x%02x lbal 0x%02x " | |
47 | "lbam 0x%02x lbah 0x%02x dev 0x%02x cmd 0x%02x\n", | |
48 | drive->name, tf->feature, tf->nsect, tf->lbal, | |
49 | tf->lbam, tf->lbah, tf->device, tf->command); | |
6dd9b837 BZ |
50 | printk("%s: hob: nsect 0x%02x lbal 0x%02x " |
51 | "lbam 0x%02x lbah 0x%02x\n", | |
52 | drive->name, tf->hob_nsect, tf->hob_lbal, | |
53 | tf->hob_lbam, tf->hob_lbah); | |
807e35d6 BZ |
54 | #endif |
55 | ||
81ca6919 | 56 | ide_set_irq(drive, 1); |
9e42237f BZ |
57 | |
58 | if ((task->tf_flags & IDE_TFLAG_NO_SELECT_MASK) == 0) | |
59 | SELECT_MASK(drive, 0); | |
60 | ||
74095a91 BZ |
61 | if (task->tf_flags & IDE_TFLAG_OUT_DATA) |
62 | hwif->OUTW((tf->hob_data << 8) | tf->data, IDE_DATA_REG); | |
63 | ||
64 | if (task->tf_flags & IDE_TFLAG_OUT_HOB_FEATURE) | |
9e42237f | 65 | hwif->OUTB(tf->hob_feature, IDE_FEATURE_REG); |
74095a91 | 66 | if (task->tf_flags & IDE_TFLAG_OUT_HOB_NSECT) |
9e42237f | 67 | hwif->OUTB(tf->hob_nsect, IDE_NSECTOR_REG); |
74095a91 | 68 | if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAL) |
9e42237f | 69 | hwif->OUTB(tf->hob_lbal, IDE_SECTOR_REG); |
74095a91 | 70 | if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAM) |
9e42237f | 71 | hwif->OUTB(tf->hob_lbam, IDE_LCYL_REG); |
74095a91 | 72 | if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAH) |
9e42237f | 73 | hwif->OUTB(tf->hob_lbah, IDE_HCYL_REG); |
9e42237f | 74 | |
74095a91 BZ |
75 | if (task->tf_flags & IDE_TFLAG_OUT_FEATURE) |
76 | hwif->OUTB(tf->feature, IDE_FEATURE_REG); | |
77 | if (task->tf_flags & IDE_TFLAG_OUT_NSECT) | |
78 | hwif->OUTB(tf->nsect, IDE_NSECTOR_REG); | |
79 | if (task->tf_flags & IDE_TFLAG_OUT_LBAL) | |
80 | hwif->OUTB(tf->lbal, IDE_SECTOR_REG); | |
81 | if (task->tf_flags & IDE_TFLAG_OUT_LBAM) | |
82 | hwif->OUTB(tf->lbam, IDE_LCYL_REG); | |
83 | if (task->tf_flags & IDE_TFLAG_OUT_LBAH) | |
84 | hwif->OUTB(tf->lbah, IDE_HCYL_REG); | |
9e42237f | 85 | |
807e35d6 BZ |
86 | if (task->tf_flags & IDE_TFLAG_OUT_DEVICE) |
87 | hwif->OUTB((tf->device & HIHI) | drive->select.all, IDE_SELECT_REG); | |
9e42237f BZ |
88 | } |
89 | ||
1da177e4 LT |
90 | int taskfile_lib_get_identify (ide_drive_t *drive, u8 *buf) |
91 | { | |
92 | ide_task_t args; | |
650d841d | 93 | |
1da177e4 | 94 | memset(&args, 0, sizeof(ide_task_t)); |
650d841d | 95 | args.tf.nsect = 0x01; |
1da177e4 | 96 | if (drive->media == ide_disk) |
650d841d | 97 | args.tf.command = WIN_IDENTIFY; |
1da177e4 | 98 | else |
650d841d | 99 | args.tf.command = WIN_PIDENTIFY; |
657cc1a8 | 100 | args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; |
ac026ff2 | 101 | args.data_phase = TASKFILE_IN; |
ac026ff2 | 102 | return ide_raw_taskfile(drive, &args, buf, 1); |
1da177e4 LT |
103 | } |
104 | ||
74095a91 BZ |
105 | static int inline task_dma_ok(ide_task_t *task) |
106 | { | |
f6e29e35 | 107 | if (blk_fs_request(task->rq) || (task->tf_flags & IDE_TFLAG_FLAGGED)) |
74095a91 BZ |
108 | return 1; |
109 | ||
110 | switch (task->tf.command) { | |
111 | case WIN_WRITEDMA_ONCE: | |
112 | case WIN_WRITEDMA: | |
113 | case WIN_WRITEDMA_EXT: | |
114 | case WIN_READDMA_ONCE: | |
115 | case WIN_READDMA: | |
116 | case WIN_READDMA_EXT: | |
117 | case WIN_IDENTIFY_DMA: | |
118 | return 1; | |
119 | } | |
120 | ||
121 | return 0; | |
122 | } | |
123 | ||
1192e528 | 124 | static ide_startstop_t task_no_data_intr(ide_drive_t *); |
57d7366b BZ |
125 | static ide_startstop_t set_geometry_intr(ide_drive_t *); |
126 | static ide_startstop_t recal_intr(ide_drive_t *); | |
127 | static ide_startstop_t set_multmode_intr(ide_drive_t *); | |
f6e29e35 BZ |
128 | static ide_startstop_t pre_task_out_intr(ide_drive_t *, struct request *); |
129 | static ide_startstop_t task_in_intr(ide_drive_t *); | |
1192e528 | 130 | |
1da177e4 LT |
131 | ide_startstop_t do_rw_taskfile (ide_drive_t *drive, ide_task_t *task) |
132 | { | |
133 | ide_hwif_t *hwif = HWIF(drive); | |
650d841d | 134 | struct ide_taskfile *tf = &task->tf; |
57d7366b | 135 | ide_handler_t *handler = NULL; |
1da177e4 | 136 | |
1edee60e BZ |
137 | if (task->data_phase == TASKFILE_MULTI_IN || |
138 | task->data_phase == TASKFILE_MULTI_OUT) { | |
139 | if (!drive->mult_count) { | |
140 | printk(KERN_ERR "%s: multimode not set!\n", | |
141 | drive->name); | |
142 | return ide_stopped; | |
143 | } | |
144 | } | |
145 | ||
146 | if (task->tf_flags & IDE_TFLAG_FLAGGED) | |
147 | task->tf_flags |= IDE_TFLAG_FLAGGED_SET_IN_FLAGS; | |
148 | ||
f6e29e35 BZ |
149 | if ((task->tf_flags & IDE_TFLAG_DMA_PIO_FALLBACK) == 0) |
150 | ide_tf_load(drive, task); | |
1da177e4 | 151 | |
10d90157 BZ |
152 | switch (task->data_phase) { |
153 | case TASKFILE_MULTI_OUT: | |
154 | case TASKFILE_OUT: | |
155 | hwif->OUTBSYNC(drive, tf->command, IDE_COMMAND_REG); | |
156 | ndelay(400); /* FIXME */ | |
157 | return pre_task_out_intr(drive, task->rq); | |
158 | case TASKFILE_MULTI_IN: | |
159 | case TASKFILE_IN: | |
57d7366b | 160 | handler = task_in_intr; |
1192e528 | 161 | /* fall-through */ |
10d90157 | 162 | case TASKFILE_NO_DATA: |
57d7366b BZ |
163 | if (handler == NULL) |
164 | handler = task_no_data_intr; | |
1192e528 | 165 | /* WIN_{SPECIFY,RESTORE,SETMULT} use custom handlers */ |
57d7366b BZ |
166 | if (task->tf_flags & IDE_TFLAG_CUSTOM_HANDLER) { |
167 | switch (tf->command) { | |
168 | case WIN_SPECIFY: handler = set_geometry_intr; break; | |
169 | case WIN_RESTORE: handler = recal_intr; break; | |
170 | case WIN_SETMULT: handler = set_multmode_intr; break; | |
171 | } | |
172 | } | |
173 | ide_execute_command(drive, tf->command, handler, | |
174 | WAIT_WORSTCASE, NULL); | |
1da177e4 | 175 | return ide_started; |
10d90157 BZ |
176 | default: |
177 | if (task_dma_ok(task) == 0 || drive->using_dma == 0 || | |
178 | hwif->dma_setup(drive)) | |
179 | return ide_stopped; | |
74095a91 BZ |
180 | hwif->dma_exec_cmd(drive, tf->command); |
181 | hwif->dma_start(drive); | |
182 | return ide_started; | |
1da177e4 | 183 | } |
1da177e4 | 184 | } |
f6e29e35 | 185 | EXPORT_SYMBOL_GPL(do_rw_taskfile); |
1da177e4 | 186 | |
1da177e4 LT |
187 | /* |
188 | * set_multmode_intr() is invoked on completion of a WIN_SETMULT cmd. | |
189 | */ | |
57d7366b | 190 | static ide_startstop_t set_multmode_intr(ide_drive_t *drive) |
1da177e4 LT |
191 | { |
192 | ide_hwif_t *hwif = HWIF(drive); | |
193 | u8 stat; | |
194 | ||
195 | if (OK_STAT(stat = hwif->INB(IDE_STATUS_REG),READY_STAT,BAD_STAT)) { | |
196 | drive->mult_count = drive->mult_req; | |
197 | } else { | |
198 | drive->mult_req = drive->mult_count = 0; | |
199 | drive->special.b.recalibrate = 1; | |
200 | (void) ide_dump_status(drive, "set_multmode", stat); | |
201 | } | |
202 | return ide_stopped; | |
203 | } | |
204 | ||
205 | /* | |
206 | * set_geometry_intr() is invoked on completion of a WIN_SPECIFY cmd. | |
207 | */ | |
57d7366b | 208 | static ide_startstop_t set_geometry_intr(ide_drive_t *drive) |
1da177e4 LT |
209 | { |
210 | ide_hwif_t *hwif = HWIF(drive); | |
211 | int retries = 5; | |
212 | u8 stat; | |
213 | ||
214 | while (((stat = hwif->INB(IDE_STATUS_REG)) & BUSY_STAT) && retries--) | |
215 | udelay(10); | |
216 | ||
217 | if (OK_STAT(stat, READY_STAT, BAD_STAT)) | |
218 | return ide_stopped; | |
219 | ||
220 | if (stat & (ERR_STAT|DRQ_STAT)) | |
221 | return ide_error(drive, "set_geometry_intr", stat); | |
222 | ||
125e1874 | 223 | BUG_ON(HWGROUP(drive)->handler != NULL); |
1da177e4 LT |
224 | ide_set_handler(drive, &set_geometry_intr, WAIT_WORSTCASE, NULL); |
225 | return ide_started; | |
226 | } | |
227 | ||
228 | /* | |
229 | * recal_intr() is invoked on completion of a WIN_RESTORE (recalibrate) cmd. | |
230 | */ | |
57d7366b | 231 | static ide_startstop_t recal_intr(ide_drive_t *drive) |
1da177e4 LT |
232 | { |
233 | ide_hwif_t *hwif = HWIF(drive); | |
234 | u8 stat; | |
235 | ||
236 | if (!OK_STAT(stat = hwif->INB(IDE_STATUS_REG), READY_STAT, BAD_STAT)) | |
237 | return ide_error(drive, "recal_intr", stat); | |
238 | return ide_stopped; | |
239 | } | |
240 | ||
241 | /* | |
242 | * Handler for commands without a data phase | |
243 | */ | |
1192e528 | 244 | static ide_startstop_t task_no_data_intr(ide_drive_t *drive) |
1da177e4 LT |
245 | { |
246 | ide_task_t *args = HWGROUP(drive)->rq->special; | |
247 | ide_hwif_t *hwif = HWIF(drive); | |
248 | u8 stat; | |
249 | ||
366c7f55 | 250 | local_irq_enable_in_hardirq(); |
1da177e4 LT |
251 | if (!OK_STAT(stat = hwif->INB(IDE_STATUS_REG),READY_STAT,BAD_STAT)) { |
252 | return ide_error(drive, "task_no_data_intr", stat); | |
253 | /* calls ide_end_drive_cmd */ | |
254 | } | |
255 | if (args) | |
256 | ide_end_drive_cmd(drive, stat, hwif->INB(IDE_ERROR_REG)); | |
257 | ||
258 | return ide_stopped; | |
259 | } | |
260 | ||
da6f4c7f | 261 | static u8 wait_drive_not_busy(ide_drive_t *drive) |
1da177e4 LT |
262 | { |
263 | ide_hwif_t *hwif = HWIF(drive); | |
b42fa133 | 264 | int retries; |
1da177e4 LT |
265 | u8 stat; |
266 | ||
267 | /* | |
268 | * Last sector was transfered, wait until drive is ready. | |
2624565c | 269 | * This can take up to 10 usec, but we will wait max 1 ms. |
1da177e4 | 270 | */ |
b42fa133 MY |
271 | for (retries = 0; retries < 100; retries++) { |
272 | if ((stat = hwif->INB(IDE_STATUS_REG)) & BUSY_STAT) | |
273 | udelay(10); | |
274 | else | |
275 | break; | |
276 | } | |
1da177e4 | 277 | |
b42fa133 | 278 | if (stat & BUSY_STAT) |
1da177e4 LT |
279 | printk(KERN_ERR "%s: drive still BUSY!\n", drive->name); |
280 | ||
281 | return stat; | |
282 | } | |
283 | ||
284 | static void ide_pio_sector(ide_drive_t *drive, unsigned int write) | |
285 | { | |
286 | ide_hwif_t *hwif = drive->hwif; | |
287 | struct scatterlist *sg = hwif->sg_table; | |
55c16a70 | 288 | struct scatterlist *cursg = hwif->cursg; |
1da177e4 LT |
289 | struct page *page; |
290 | #ifdef CONFIG_HIGHMEM | |
291 | unsigned long flags; | |
292 | #endif | |
293 | unsigned int offset; | |
294 | u8 *buf; | |
295 | ||
55c16a70 JA |
296 | cursg = hwif->cursg; |
297 | if (!cursg) { | |
298 | cursg = sg; | |
299 | hwif->cursg = sg; | |
300 | } | |
301 | ||
45711f1a | 302 | page = sg_page(cursg); |
55c16a70 | 303 | offset = cursg->offset + hwif->cursg_ofs * SECTOR_SIZE; |
1da177e4 LT |
304 | |
305 | /* get the current page and offset */ | |
306 | page = nth_page(page, (offset >> PAGE_SHIFT)); | |
307 | offset %= PAGE_SIZE; | |
308 | ||
309 | #ifdef CONFIG_HIGHMEM | |
310 | local_irq_save(flags); | |
311 | #endif | |
312 | buf = kmap_atomic(page, KM_BIO_SRC_IRQ) + offset; | |
313 | ||
314 | hwif->nleft--; | |
315 | hwif->cursg_ofs++; | |
316 | ||
55c16a70 JA |
317 | if ((hwif->cursg_ofs * SECTOR_SIZE) == cursg->length) { |
318 | hwif->cursg = sg_next(hwif->cursg); | |
1da177e4 LT |
319 | hwif->cursg_ofs = 0; |
320 | } | |
321 | ||
322 | /* do the actual data transfer */ | |
323 | if (write) | |
9e47be0c | 324 | hwif->ata_output_data(drive, buf, SECTOR_WORDS); |
1da177e4 | 325 | else |
9e47be0c | 326 | hwif->ata_input_data(drive, buf, SECTOR_WORDS); |
1da177e4 LT |
327 | |
328 | kunmap_atomic(buf, KM_BIO_SRC_IRQ); | |
329 | #ifdef CONFIG_HIGHMEM | |
330 | local_irq_restore(flags); | |
331 | #endif | |
332 | } | |
333 | ||
334 | static void ide_pio_multi(ide_drive_t *drive, unsigned int write) | |
335 | { | |
336 | unsigned int nsect; | |
337 | ||
338 | nsect = min_t(unsigned int, drive->hwif->nleft, drive->mult_count); | |
339 | while (nsect--) | |
340 | ide_pio_sector(drive, write); | |
341 | } | |
342 | ||
858119e1 | 343 | static void ide_pio_datablock(ide_drive_t *drive, struct request *rq, |
1da177e4 LT |
344 | unsigned int write) |
345 | { | |
35cf2b94 TH |
346 | u8 saved_io_32bit = drive->io_32bit; |
347 | ||
1da177e4 LT |
348 | if (rq->bio) /* fs request */ |
349 | rq->errors = 0; | |
350 | ||
35cf2b94 TH |
351 | if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) { |
352 | ide_task_t *task = rq->special; | |
353 | ||
354 | if (task->tf_flags & IDE_TFLAG_IO_16BIT) | |
355 | drive->io_32bit = 0; | |
356 | } | |
357 | ||
651c29a1 AM |
358 | touch_softlockup_watchdog(); |
359 | ||
1da177e4 LT |
360 | switch (drive->hwif->data_phase) { |
361 | case TASKFILE_MULTI_IN: | |
362 | case TASKFILE_MULTI_OUT: | |
363 | ide_pio_multi(drive, write); | |
364 | break; | |
365 | default: | |
366 | ide_pio_sector(drive, write); | |
367 | break; | |
368 | } | |
35cf2b94 TH |
369 | |
370 | drive->io_32bit = saved_io_32bit; | |
1da177e4 LT |
371 | } |
372 | ||
373 | static ide_startstop_t task_error(ide_drive_t *drive, struct request *rq, | |
374 | const char *s, u8 stat) | |
375 | { | |
376 | if (rq->bio) { | |
377 | ide_hwif_t *hwif = drive->hwif; | |
378 | int sectors = hwif->nsect - hwif->nleft; | |
379 | ||
380 | switch (hwif->data_phase) { | |
381 | case TASKFILE_IN: | |
382 | if (hwif->nleft) | |
383 | break; | |
384 | /* fall through */ | |
385 | case TASKFILE_OUT: | |
386 | sectors--; | |
387 | break; | |
388 | case TASKFILE_MULTI_IN: | |
389 | if (hwif->nleft) | |
390 | break; | |
391 | /* fall through */ | |
392 | case TASKFILE_MULTI_OUT: | |
393 | sectors -= drive->mult_count; | |
394 | default: | |
395 | break; | |
396 | } | |
397 | ||
398 | if (sectors > 0) { | |
399 | ide_driver_t *drv; | |
400 | ||
401 | drv = *(ide_driver_t **)rq->rq_disk->private_data; | |
402 | drv->end_request(drive, 1, sectors); | |
403 | } | |
404 | } | |
405 | return ide_error(drive, s, stat); | |
406 | } | |
407 | ||
4d7a984b | 408 | void task_end_request(ide_drive_t *drive, struct request *rq, u8 stat) |
1da177e4 | 409 | { |
4aff5e23 | 410 | if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) { |
4d7a984b | 411 | u8 err = drive->hwif->INB(IDE_ERROR_REG); |
1da177e4 | 412 | |
4d7a984b TH |
413 | ide_end_drive_cmd(drive, stat, err); |
414 | return; | |
1da177e4 LT |
415 | } |
416 | ||
03731fbd RP |
417 | if (rq->rq_disk) { |
418 | ide_driver_t *drv; | |
419 | ||
420 | drv = *(ide_driver_t **)rq->rq_disk->private_data;; | |
79f21b84 | 421 | drv->end_request(drive, 1, rq->nr_sectors); |
03731fbd | 422 | } else |
79f21b84 | 423 | ide_end_request(drive, 1, rq->nr_sectors); |
1da177e4 LT |
424 | } |
425 | ||
426 | /* | |
427 | * Handler for command with PIO data-in phase (Read/Read Multiple). | |
428 | */ | |
f6e29e35 | 429 | static ide_startstop_t task_in_intr(ide_drive_t *drive) |
1da177e4 LT |
430 | { |
431 | ide_hwif_t *hwif = drive->hwif; | |
432 | struct request *rq = HWGROUP(drive)->rq; | |
433 | u8 stat = hwif->INB(IDE_STATUS_REG); | |
434 | ||
435 | /* new way for dealing with premature shared PCI interrupts */ | |
4906f3b4 | 436 | if (!OK_STAT(stat, DRQ_STAT, BAD_R_STAT)) { |
1da177e4 LT |
437 | if (stat & (ERR_STAT | DRQ_STAT)) |
438 | return task_error(drive, rq, __FUNCTION__, stat); | |
439 | /* No data yet, so wait for another IRQ. */ | |
440 | ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL); | |
441 | return ide_started; | |
442 | } | |
443 | ||
444 | ide_pio_datablock(drive, rq, 0); | |
445 | ||
446 | /* If it was the last datablock check status and finish transfer. */ | |
447 | if (!hwif->nleft) { | |
448 | stat = wait_drive_not_busy(drive); | |
73d7de0c | 449 | if (!OK_STAT(stat, 0, BAD_STAT)) |
1da177e4 LT |
450 | return task_error(drive, rq, __FUNCTION__, stat); |
451 | task_end_request(drive, rq, stat); | |
452 | return ide_stopped; | |
453 | } | |
454 | ||
455 | /* Still data left to transfer. */ | |
456 | ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL); | |
457 | ||
458 | return ide_started; | |
459 | } | |
1da177e4 LT |
460 | |
461 | /* | |
462 | * Handler for command with PIO data-out phase (Write/Write Multiple). | |
463 | */ | |
464 | static ide_startstop_t task_out_intr (ide_drive_t *drive) | |
465 | { | |
466 | ide_hwif_t *hwif = drive->hwif; | |
467 | struct request *rq = HWGROUP(drive)->rq; | |
468 | u8 stat = hwif->INB(IDE_STATUS_REG); | |
469 | ||
470 | if (!OK_STAT(stat, DRIVE_READY, drive->bad_wstat)) | |
471 | return task_error(drive, rq, __FUNCTION__, stat); | |
472 | ||
473 | /* Deal with unexpected ATA data phase. */ | |
474 | if (((stat & DRQ_STAT) == 0) ^ !hwif->nleft) | |
475 | return task_error(drive, rq, __FUNCTION__, stat); | |
476 | ||
477 | if (!hwif->nleft) { | |
478 | task_end_request(drive, rq, stat); | |
479 | return ide_stopped; | |
480 | } | |
481 | ||
482 | /* Still data left to transfer. */ | |
483 | ide_pio_datablock(drive, rq, 1); | |
484 | ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL); | |
485 | ||
486 | return ide_started; | |
487 | } | |
488 | ||
f6e29e35 | 489 | static ide_startstop_t pre_task_out_intr(ide_drive_t *drive, struct request *rq) |
1da177e4 LT |
490 | { |
491 | ide_startstop_t startstop; | |
492 | ||
4906f3b4 | 493 | if (ide_wait_stat(&startstop, drive, DRQ_STAT, |
1da177e4 LT |
494 | drive->bad_wstat, WAIT_DRQ)) { |
495 | printk(KERN_ERR "%s: no DRQ after issuing %sWRITE%s\n", | |
496 | drive->name, | |
497 | drive->hwif->data_phase ? "MULT" : "", | |
498 | drive->addressing ? "_EXT" : ""); | |
499 | return startstop; | |
500 | } | |
501 | ||
502 | if (!drive->unmask) | |
503 | local_irq_disable(); | |
504 | ||
505 | ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL); | |
506 | ide_pio_datablock(drive, rq, 1); | |
507 | ||
508 | return ide_started; | |
509 | } | |
1da177e4 | 510 | |
ac026ff2 | 511 | int ide_raw_taskfile(ide_drive_t *drive, ide_task_t *task, u8 *buf, u16 nsect) |
1da177e4 LT |
512 | { |
513 | struct request rq; | |
514 | ||
515 | memset(&rq, 0, sizeof(rq)); | |
02ac2460 | 516 | rq.ref_count = 1; |
4aff5e23 | 517 | rq.cmd_type = REQ_TYPE_ATA_TASKFILE; |
1da177e4 LT |
518 | rq.buffer = buf; |
519 | ||
520 | /* | |
521 | * (ks) We transfer currently only whole sectors. | |
522 | * This is suffient for now. But, it would be great, | |
523 | * if we would find a solution to transfer any size. | |
524 | * To support special commands like READ LONG. | |
525 | */ | |
ac026ff2 BZ |
526 | rq.hard_nr_sectors = rq.nr_sectors = nsect; |
527 | rq.hard_cur_sectors = rq.current_nr_sectors = nsect; | |
1da177e4 | 528 | |
ac026ff2 BZ |
529 | if (task->tf_flags & IDE_TFLAG_WRITE) |
530 | rq.cmd_flags |= REQ_RW; | |
1da177e4 | 531 | |
ac026ff2 BZ |
532 | rq.special = task; |
533 | task->rq = &rq; | |
1da177e4 | 534 | |
1da177e4 LT |
535 | return ide_do_drive_cmd(drive, &rq, ide_wait); |
536 | } | |
537 | ||
1da177e4 LT |
538 | EXPORT_SYMBOL(ide_raw_taskfile); |
539 | ||
9a3c49be BZ |
540 | int ide_no_data_taskfile(ide_drive_t *drive, ide_task_t *task) |
541 | { | |
ac026ff2 | 542 | task->data_phase = TASKFILE_NO_DATA; |
9a3c49be | 543 | |
ac026ff2 | 544 | return ide_raw_taskfile(drive, task, NULL, 0); |
9a3c49be BZ |
545 | } |
546 | EXPORT_SYMBOL_GPL(ide_no_data_taskfile); | |
547 | ||
26a5b040 | 548 | #ifdef CONFIG_IDE_TASK_IOCTL |
1da177e4 LT |
549 | int ide_taskfile_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg) |
550 | { | |
551 | ide_task_request_t *req_task; | |
552 | ide_task_t args; | |
553 | u8 *outbuf = NULL; | |
554 | u8 *inbuf = NULL; | |
ac026ff2 | 555 | u8 *data_buf = NULL; |
1da177e4 LT |
556 | int err = 0; |
557 | int tasksize = sizeof(struct ide_task_request_s); | |
3a42bb22 AC |
558 | unsigned int taskin = 0; |
559 | unsigned int taskout = 0; | |
ac026ff2 | 560 | u16 nsect = 0; |
1da177e4 LT |
561 | char __user *buf = (char __user *)arg; |
562 | ||
563 | // printk("IDE Taskfile ...\n"); | |
564 | ||
f5e3c2fa | 565 | req_task = kzalloc(tasksize, GFP_KERNEL); |
1da177e4 | 566 | if (req_task == NULL) return -ENOMEM; |
1da177e4 LT |
567 | if (copy_from_user(req_task, buf, tasksize)) { |
568 | kfree(req_task); | |
569 | return -EFAULT; | |
570 | } | |
571 | ||
3a42bb22 AC |
572 | taskout = req_task->out_size; |
573 | taskin = req_task->in_size; | |
574 | ||
575 | if (taskin > 65536 || taskout > 65536) { | |
576 | err = -EINVAL; | |
577 | goto abort; | |
578 | } | |
1da177e4 LT |
579 | |
580 | if (taskout) { | |
581 | int outtotal = tasksize; | |
f5e3c2fa | 582 | outbuf = kzalloc(taskout, GFP_KERNEL); |
1da177e4 LT |
583 | if (outbuf == NULL) { |
584 | err = -ENOMEM; | |
585 | goto abort; | |
586 | } | |
1da177e4 LT |
587 | if (copy_from_user(outbuf, buf + outtotal, taskout)) { |
588 | err = -EFAULT; | |
589 | goto abort; | |
590 | } | |
591 | } | |
592 | ||
593 | if (taskin) { | |
594 | int intotal = tasksize + taskout; | |
f5e3c2fa | 595 | inbuf = kzalloc(taskin, GFP_KERNEL); |
1da177e4 LT |
596 | if (inbuf == NULL) { |
597 | err = -ENOMEM; | |
598 | goto abort; | |
599 | } | |
1da177e4 LT |
600 | if (copy_from_user(inbuf, buf + intotal, taskin)) { |
601 | err = -EFAULT; | |
602 | goto abort; | |
603 | } | |
604 | } | |
605 | ||
606 | memset(&args, 0, sizeof(ide_task_t)); | |
1da177e4 | 607 | |
650d841d BZ |
608 | memcpy(&args.tf_array[0], req_task->hob_ports, HDIO_DRIVE_HOB_HDR_SIZE - 2); |
609 | memcpy(&args.tf_array[6], req_task->io_ports, HDIO_DRIVE_TASK_HDR_SIZE); | |
866e2ec9 BZ |
610 | |
611 | args.data_phase = req_task->data_phase; | |
1da177e4 | 612 | |
657cc1a8 BZ |
613 | args.tf_flags = IDE_TFLAG_IO_16BIT | IDE_TFLAG_DEVICE | |
614 | IDE_TFLAG_IN_TF; | |
a3bbb9d8 | 615 | if (drive->addressing == 1) |
657cc1a8 | 616 | args.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_IN_HOB); |
a3bbb9d8 | 617 | |
74095a91 BZ |
618 | if (req_task->out_flags.all) { |
619 | args.tf_flags |= IDE_TFLAG_FLAGGED; | |
620 | ||
621 | if (req_task->out_flags.b.data) | |
622 | args.tf_flags |= IDE_TFLAG_OUT_DATA; | |
623 | ||
624 | if (req_task->out_flags.b.nsector_hob) | |
625 | args.tf_flags |= IDE_TFLAG_OUT_HOB_NSECT; | |
626 | if (req_task->out_flags.b.sector_hob) | |
627 | args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAL; | |
628 | if (req_task->out_flags.b.lcyl_hob) | |
629 | args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAM; | |
630 | if (req_task->out_flags.b.hcyl_hob) | |
631 | args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAH; | |
632 | ||
633 | if (req_task->out_flags.b.error_feature) | |
634 | args.tf_flags |= IDE_TFLAG_OUT_FEATURE; | |
635 | if (req_task->out_flags.b.nsector) | |
636 | args.tf_flags |= IDE_TFLAG_OUT_NSECT; | |
637 | if (req_task->out_flags.b.sector) | |
638 | args.tf_flags |= IDE_TFLAG_OUT_LBAL; | |
639 | if (req_task->out_flags.b.lcyl) | |
640 | args.tf_flags |= IDE_TFLAG_OUT_LBAM; | |
641 | if (req_task->out_flags.b.hcyl) | |
642 | args.tf_flags |= IDE_TFLAG_OUT_LBAH; | |
a3bbb9d8 BZ |
643 | } else { |
644 | args.tf_flags |= IDE_TFLAG_OUT_TF; | |
645 | if (args.tf_flags & IDE_TFLAG_LBA48) | |
646 | args.tf_flags |= IDE_TFLAG_OUT_HOB; | |
74095a91 BZ |
647 | } |
648 | ||
866e2ec9 BZ |
649 | if (req_task->in_flags.b.data) |
650 | args.tf_flags |= IDE_TFLAG_IN_DATA; | |
651 | ||
1da177e4 | 652 | switch(req_task->data_phase) { |
1da177e4 LT |
653 | case TASKFILE_MULTI_OUT: |
654 | if (!drive->mult_count) { | |
655 | /* (hs): give up if multcount is not set */ | |
656 | printk(KERN_ERR "%s: %s Multimode Write " \ | |
657 | "multcount is not set\n", | |
658 | drive->name, __FUNCTION__); | |
659 | err = -EPERM; | |
660 | goto abort; | |
661 | } | |
662 | /* fall through */ | |
663 | case TASKFILE_OUT: | |
ac026ff2 BZ |
664 | /* fall through */ |
665 | case TASKFILE_OUT_DMAQ: | |
666 | case TASKFILE_OUT_DMA: | |
667 | nsect = taskout / SECTOR_SIZE; | |
668 | data_buf = outbuf; | |
1da177e4 LT |
669 | break; |
670 | case TASKFILE_MULTI_IN: | |
671 | if (!drive->mult_count) { | |
672 | /* (hs): give up if multcount is not set */ | |
673 | printk(KERN_ERR "%s: %s Multimode Read failure " \ | |
674 | "multcount is not set\n", | |
675 | drive->name, __FUNCTION__); | |
676 | err = -EPERM; | |
677 | goto abort; | |
678 | } | |
679 | /* fall through */ | |
680 | case TASKFILE_IN: | |
ac026ff2 BZ |
681 | /* fall through */ |
682 | case TASKFILE_IN_DMAQ: | |
683 | case TASKFILE_IN_DMA: | |
684 | nsect = taskin / SECTOR_SIZE; | |
685 | data_buf = inbuf; | |
1da177e4 LT |
686 | break; |
687 | case TASKFILE_NO_DATA: | |
1da177e4 LT |
688 | break; |
689 | default: | |
690 | err = -EFAULT; | |
691 | goto abort; | |
692 | } | |
693 | ||
ac026ff2 BZ |
694 | if (req_task->req_cmd == IDE_DRIVE_TASK_NO_DATA) |
695 | nsect = 0; | |
696 | else if (!nsect) { | |
697 | nsect = (args.tf.hob_nsect << 8) | args.tf.nsect; | |
698 | ||
699 | if (!nsect) { | |
700 | printk(KERN_ERR "%s: in/out command without data\n", | |
701 | drive->name); | |
702 | err = -EFAULT; | |
703 | goto abort; | |
704 | } | |
705 | } | |
706 | ||
707 | if (req_task->req_cmd == IDE_DRIVE_TASK_RAW_WRITE) | |
708 | args.tf_flags |= IDE_TFLAG_WRITE; | |
709 | ||
710 | err = ide_raw_taskfile(drive, &args, data_buf, nsect); | |
711 | ||
650d841d BZ |
712 | memcpy(req_task->hob_ports, &args.tf_array[0], HDIO_DRIVE_HOB_HDR_SIZE - 2); |
713 | memcpy(req_task->io_ports, &args.tf_array[6], HDIO_DRIVE_TASK_HDR_SIZE); | |
866e2ec9 BZ |
714 | |
715 | if ((args.tf_flags & IDE_TFLAG_FLAGGED_SET_IN_FLAGS) && | |
716 | req_task->in_flags.all == 0) { | |
717 | req_task->in_flags.all = IDE_TASKFILE_STD_IN_FLAGS; | |
718 | if (drive->addressing == 1) | |
719 | req_task->in_flags.all |= (IDE_HOB_STD_IN_FLAGS << 8); | |
720 | } | |
1da177e4 LT |
721 | |
722 | if (copy_to_user(buf, req_task, tasksize)) { | |
723 | err = -EFAULT; | |
724 | goto abort; | |
725 | } | |
726 | if (taskout) { | |
727 | int outtotal = tasksize; | |
728 | if (copy_to_user(buf + outtotal, outbuf, taskout)) { | |
729 | err = -EFAULT; | |
730 | goto abort; | |
731 | } | |
732 | } | |
733 | if (taskin) { | |
734 | int intotal = tasksize + taskout; | |
735 | if (copy_to_user(buf + intotal, inbuf, taskin)) { | |
736 | err = -EFAULT; | |
737 | goto abort; | |
738 | } | |
739 | } | |
740 | abort: | |
741 | kfree(req_task); | |
6044ec88 JJ |
742 | kfree(outbuf); |
743 | kfree(inbuf); | |
1da177e4 LT |
744 | |
745 | // printk("IDE Taskfile ioctl ended. rc = %i\n", err); | |
746 | ||
1da177e4 LT |
747 | return err; |
748 | } | |
26a5b040 | 749 | #endif |
1da177e4 | 750 | |
1da177e4 LT |
751 | int ide_cmd_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg) |
752 | { | |
5a9e77af BZ |
753 | u8 *buf = NULL; |
754 | int bufsize = 0, err = 0; | |
755 | u8 args[4], xfer_rate = 0; | |
1da177e4 | 756 | ide_task_t tfargs; |
650d841d | 757 | struct ide_taskfile *tf = &tfargs.tf; |
5efe7c54 | 758 | struct hd_driveid *id = drive->id; |
1da177e4 LT |
759 | |
760 | if (NULL == (void *) arg) { | |
761 | struct request rq; | |
145b75e9 | 762 | |
1da177e4 | 763 | ide_init_drive_cmd(&rq); |
852738f3 | 764 | rq.cmd_type = REQ_TYPE_ATA_TASKFILE; |
145b75e9 | 765 | |
1da177e4 LT |
766 | return ide_do_drive_cmd(drive, &rq, ide_wait); |
767 | } | |
768 | ||
769 | if (copy_from_user(args, (void __user *)arg, 4)) | |
770 | return -EFAULT; | |
771 | ||
772 | memset(&tfargs, 0, sizeof(ide_task_t)); | |
650d841d | 773 | tf->feature = args[2]; |
5a9e77af BZ |
774 | if (args[0] == WIN_SMART) { |
775 | tf->nsect = args[3]; | |
776 | tf->lbal = args[1]; | |
777 | tf->lbam = 0x4f; | |
778 | tf->lbah = 0xc2; | |
779 | tfargs.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_IN_NSECT; | |
780 | } else { | |
781 | tf->nsect = args[1]; | |
782 | tfargs.tf_flags = IDE_TFLAG_OUT_FEATURE | | |
783 | IDE_TFLAG_OUT_NSECT | IDE_TFLAG_IN_NSECT; | |
784 | } | |
650d841d | 785 | tf->command = args[0]; |
5a9e77af | 786 | tfargs.data_phase = args[3] ? TASKFILE_IN : TASKFILE_NO_DATA; |
1da177e4 LT |
787 | |
788 | if (args[3]) { | |
5a9e77af BZ |
789 | tfargs.tf_flags |= IDE_TFLAG_IO_16BIT; |
790 | bufsize = SECTOR_WORDS * 4 * args[3]; | |
791 | buf = kzalloc(bufsize, GFP_KERNEL); | |
792 | if (buf == NULL) | |
1da177e4 | 793 | return -ENOMEM; |
1da177e4 | 794 | } |
5a9e77af | 795 | |
5efe7c54 BZ |
796 | if (tf->command == WIN_SETFEATURES && |
797 | tf->feature == SETFEATURES_XFER && | |
798 | tf->nsect >= XFER_SW_DMA_0 && | |
799 | (id->dma_ultra || id->dma_mword || id->dma_1word)) { | |
1da177e4 | 800 | xfer_rate = args[1]; |
af10f773 BZ |
801 | if (tf->nsect > XFER_UDMA_2 && !eighty_ninty_three(drive)) { |
802 | printk(KERN_WARNING "%s: UDMA speeds >UDMA33 cannot " | |
803 | "be set\n", drive->name); | |
1da177e4 | 804 | goto abort; |
af10f773 | 805 | } |
1da177e4 LT |
806 | } |
807 | ||
5a9e77af BZ |
808 | err = ide_raw_taskfile(drive, &tfargs, buf, args[3]); |
809 | ||
810 | args[0] = tf->status; | |
811 | args[1] = tf->error; | |
812 | args[2] = tf->nsect; | |
1da177e4 LT |
813 | |
814 | if (!err && xfer_rate) { | |
815 | /* active-retuning-calls future */ | |
816 | ide_set_xfer_rate(drive, xfer_rate); | |
817 | ide_driveid_update(drive); | |
818 | } | |
819 | abort: | |
5a9e77af | 820 | if (copy_to_user((void __user *)arg, &args, 4)) |
1da177e4 | 821 | err = -EFAULT; |
5a9e77af BZ |
822 | if (buf) { |
823 | if (copy_to_user((void __user *)(arg + 4), buf, bufsize)) | |
824 | err = -EFAULT; | |
825 | kfree(buf); | |
826 | } | |
1da177e4 LT |
827 | return err; |
828 | } | |
829 | ||
1da177e4 LT |
830 | int ide_task_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg) |
831 | { | |
832 | void __user *p = (void __user *)arg; | |
833 | int err = 0; | |
14b89ef9 BZ |
834 | u8 args[7]; |
835 | ide_task_t task; | |
1da177e4 LT |
836 | |
837 | if (copy_from_user(args, p, 7)) | |
838 | return -EFAULT; | |
14b89ef9 BZ |
839 | |
840 | memset(&task, 0, sizeof(task)); | |
841 | memcpy(&task.tf_array[7], &args[1], 6); | |
842 | task.tf.command = args[0]; | |
657cc1a8 | 843 | task.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; |
14b89ef9 BZ |
844 | |
845 | err = ide_no_data_taskfile(drive, &task); | |
846 | ||
847 | args[0] = task.tf.command; | |
848 | memcpy(&args[1], &task.tf_array[7], 6); | |
849 | ||
850 | if (copy_to_user(p, args, 7)) | |
1da177e4 | 851 | err = -EFAULT; |
14b89ef9 | 852 | |
1da177e4 LT |
853 | return err; |
854 | } |