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Commit | Line | Data |
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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 | 191 | { |
c47137a9 | 192 | u8 stat = ide_read_status(drive); |
1da177e4 | 193 | |
c47137a9 | 194 | if (OK_STAT(stat, READY_STAT, BAD_STAT)) |
1da177e4 | 195 | drive->mult_count = drive->mult_req; |
c47137a9 | 196 | else { |
1da177e4 LT |
197 | drive->mult_req = drive->mult_count = 0; |
198 | drive->special.b.recalibrate = 1; | |
199 | (void) ide_dump_status(drive, "set_multmode", stat); | |
200 | } | |
201 | return ide_stopped; | |
202 | } | |
203 | ||
204 | /* | |
205 | * set_geometry_intr() is invoked on completion of a WIN_SPECIFY cmd. | |
206 | */ | |
57d7366b | 207 | static ide_startstop_t set_geometry_intr(ide_drive_t *drive) |
1da177e4 | 208 | { |
1da177e4 LT |
209 | int retries = 5; |
210 | u8 stat; | |
211 | ||
c47137a9 | 212 | while (((stat = ide_read_status(drive)) & BUSY_STAT) && retries--) |
1da177e4 LT |
213 | udelay(10); |
214 | ||
215 | if (OK_STAT(stat, READY_STAT, BAD_STAT)) | |
216 | return ide_stopped; | |
217 | ||
218 | if (stat & (ERR_STAT|DRQ_STAT)) | |
219 | return ide_error(drive, "set_geometry_intr", stat); | |
220 | ||
125e1874 | 221 | BUG_ON(HWGROUP(drive)->handler != NULL); |
1da177e4 LT |
222 | ide_set_handler(drive, &set_geometry_intr, WAIT_WORSTCASE, NULL); |
223 | return ide_started; | |
224 | } | |
225 | ||
226 | /* | |
227 | * recal_intr() is invoked on completion of a WIN_RESTORE (recalibrate) cmd. | |
228 | */ | |
57d7366b | 229 | static ide_startstop_t recal_intr(ide_drive_t *drive) |
1da177e4 | 230 | { |
c47137a9 | 231 | u8 stat = ide_read_status(drive); |
1da177e4 | 232 | |
c47137a9 | 233 | if (!OK_STAT(stat, READY_STAT, BAD_STAT)) |
1da177e4 LT |
234 | return ide_error(drive, "recal_intr", stat); |
235 | return ide_stopped; | |
236 | } | |
237 | ||
238 | /* | |
239 | * Handler for commands without a data phase | |
240 | */ | |
1192e528 | 241 | static ide_startstop_t task_no_data_intr(ide_drive_t *drive) |
1da177e4 LT |
242 | { |
243 | ide_task_t *args = HWGROUP(drive)->rq->special; | |
1da177e4 LT |
244 | u8 stat; |
245 | ||
366c7f55 | 246 | local_irq_enable_in_hardirq(); |
c47137a9 BZ |
247 | stat = ide_read_status(drive); |
248 | ||
249 | if (!OK_STAT(stat, READY_STAT, BAD_STAT)) | |
1da177e4 LT |
250 | return ide_error(drive, "task_no_data_intr", stat); |
251 | /* calls ide_end_drive_cmd */ | |
c47137a9 | 252 | |
1da177e4 | 253 | if (args) |
64a57fe4 | 254 | ide_end_drive_cmd(drive, stat, ide_read_error(drive)); |
1da177e4 LT |
255 | |
256 | return ide_stopped; | |
257 | } | |
258 | ||
da6f4c7f | 259 | static u8 wait_drive_not_busy(ide_drive_t *drive) |
1da177e4 | 260 | { |
b42fa133 | 261 | int retries; |
1da177e4 LT |
262 | u8 stat; |
263 | ||
264 | /* | |
265 | * Last sector was transfered, wait until drive is ready. | |
2624565c | 266 | * This can take up to 10 usec, but we will wait max 1 ms. |
1da177e4 | 267 | */ |
b42fa133 | 268 | for (retries = 0; retries < 100; retries++) { |
c47137a9 BZ |
269 | stat = ide_read_status(drive); |
270 | ||
271 | if (stat & BUSY_STAT) | |
b42fa133 MY |
272 | udelay(10); |
273 | else | |
274 | break; | |
275 | } | |
1da177e4 | 276 | |
b42fa133 | 277 | if (stat & BUSY_STAT) |
1da177e4 LT |
278 | printk(KERN_ERR "%s: drive still BUSY!\n", drive->name); |
279 | ||
280 | return stat; | |
281 | } | |
282 | ||
283 | static void ide_pio_sector(ide_drive_t *drive, unsigned int write) | |
284 | { | |
285 | ide_hwif_t *hwif = drive->hwif; | |
286 | struct scatterlist *sg = hwif->sg_table; | |
55c16a70 | 287 | struct scatterlist *cursg = hwif->cursg; |
1da177e4 LT |
288 | struct page *page; |
289 | #ifdef CONFIG_HIGHMEM | |
290 | unsigned long flags; | |
291 | #endif | |
292 | unsigned int offset; | |
293 | u8 *buf; | |
294 | ||
55c16a70 JA |
295 | cursg = hwif->cursg; |
296 | if (!cursg) { | |
297 | cursg = sg; | |
298 | hwif->cursg = sg; | |
299 | } | |
300 | ||
45711f1a | 301 | page = sg_page(cursg); |
55c16a70 | 302 | offset = cursg->offset + hwif->cursg_ofs * SECTOR_SIZE; |
1da177e4 LT |
303 | |
304 | /* get the current page and offset */ | |
305 | page = nth_page(page, (offset >> PAGE_SHIFT)); | |
306 | offset %= PAGE_SIZE; | |
307 | ||
308 | #ifdef CONFIG_HIGHMEM | |
309 | local_irq_save(flags); | |
310 | #endif | |
311 | buf = kmap_atomic(page, KM_BIO_SRC_IRQ) + offset; | |
312 | ||
313 | hwif->nleft--; | |
314 | hwif->cursg_ofs++; | |
315 | ||
55c16a70 JA |
316 | if ((hwif->cursg_ofs * SECTOR_SIZE) == cursg->length) { |
317 | hwif->cursg = sg_next(hwif->cursg); | |
1da177e4 LT |
318 | hwif->cursg_ofs = 0; |
319 | } | |
320 | ||
321 | /* do the actual data transfer */ | |
322 | if (write) | |
9e47be0c | 323 | hwif->ata_output_data(drive, buf, SECTOR_WORDS); |
1da177e4 | 324 | else |
9e47be0c | 325 | hwif->ata_input_data(drive, buf, SECTOR_WORDS); |
1da177e4 LT |
326 | |
327 | kunmap_atomic(buf, KM_BIO_SRC_IRQ); | |
328 | #ifdef CONFIG_HIGHMEM | |
329 | local_irq_restore(flags); | |
330 | #endif | |
331 | } | |
332 | ||
333 | static void ide_pio_multi(ide_drive_t *drive, unsigned int write) | |
334 | { | |
335 | unsigned int nsect; | |
336 | ||
337 | nsect = min_t(unsigned int, drive->hwif->nleft, drive->mult_count); | |
338 | while (nsect--) | |
339 | ide_pio_sector(drive, write); | |
340 | } | |
341 | ||
858119e1 | 342 | static void ide_pio_datablock(ide_drive_t *drive, struct request *rq, |
1da177e4 LT |
343 | unsigned int write) |
344 | { | |
35cf2b94 TH |
345 | u8 saved_io_32bit = drive->io_32bit; |
346 | ||
1da177e4 LT |
347 | if (rq->bio) /* fs request */ |
348 | rq->errors = 0; | |
349 | ||
35cf2b94 TH |
350 | if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) { |
351 | ide_task_t *task = rq->special; | |
352 | ||
353 | if (task->tf_flags & IDE_TFLAG_IO_16BIT) | |
354 | drive->io_32bit = 0; | |
355 | } | |
356 | ||
651c29a1 AM |
357 | touch_softlockup_watchdog(); |
358 | ||
1da177e4 LT |
359 | switch (drive->hwif->data_phase) { |
360 | case TASKFILE_MULTI_IN: | |
361 | case TASKFILE_MULTI_OUT: | |
362 | ide_pio_multi(drive, write); | |
363 | break; | |
364 | default: | |
365 | ide_pio_sector(drive, write); | |
366 | break; | |
367 | } | |
35cf2b94 TH |
368 | |
369 | drive->io_32bit = saved_io_32bit; | |
1da177e4 LT |
370 | } |
371 | ||
372 | static ide_startstop_t task_error(ide_drive_t *drive, struct request *rq, | |
373 | const char *s, u8 stat) | |
374 | { | |
375 | if (rq->bio) { | |
376 | ide_hwif_t *hwif = drive->hwif; | |
377 | int sectors = hwif->nsect - hwif->nleft; | |
378 | ||
379 | switch (hwif->data_phase) { | |
380 | case TASKFILE_IN: | |
381 | if (hwif->nleft) | |
382 | break; | |
383 | /* fall through */ | |
384 | case TASKFILE_OUT: | |
385 | sectors--; | |
386 | break; | |
387 | case TASKFILE_MULTI_IN: | |
388 | if (hwif->nleft) | |
389 | break; | |
390 | /* fall through */ | |
391 | case TASKFILE_MULTI_OUT: | |
392 | sectors -= drive->mult_count; | |
393 | default: | |
394 | break; | |
395 | } | |
396 | ||
397 | if (sectors > 0) { | |
398 | ide_driver_t *drv; | |
399 | ||
400 | drv = *(ide_driver_t **)rq->rq_disk->private_data; | |
401 | drv->end_request(drive, 1, sectors); | |
402 | } | |
403 | } | |
404 | return ide_error(drive, s, stat); | |
405 | } | |
406 | ||
4d7a984b | 407 | void task_end_request(ide_drive_t *drive, struct request *rq, u8 stat) |
1da177e4 | 408 | { |
4aff5e23 | 409 | if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) { |
64a57fe4 | 410 | u8 err = ide_read_error(drive); |
1da177e4 | 411 | |
4d7a984b TH |
412 | ide_end_drive_cmd(drive, stat, err); |
413 | return; | |
1da177e4 LT |
414 | } |
415 | ||
03731fbd RP |
416 | if (rq->rq_disk) { |
417 | ide_driver_t *drv; | |
418 | ||
419 | drv = *(ide_driver_t **)rq->rq_disk->private_data;; | |
79f21b84 | 420 | drv->end_request(drive, 1, rq->nr_sectors); |
03731fbd | 421 | } else |
79f21b84 | 422 | ide_end_request(drive, 1, rq->nr_sectors); |
1da177e4 LT |
423 | } |
424 | ||
425 | /* | |
426 | * Handler for command with PIO data-in phase (Read/Read Multiple). | |
427 | */ | |
f6e29e35 | 428 | static ide_startstop_t task_in_intr(ide_drive_t *drive) |
1da177e4 LT |
429 | { |
430 | ide_hwif_t *hwif = drive->hwif; | |
431 | struct request *rq = HWGROUP(drive)->rq; | |
c47137a9 | 432 | u8 stat = ide_read_status(drive); |
1da177e4 LT |
433 | |
434 | /* new way for dealing with premature shared PCI interrupts */ | |
4906f3b4 | 435 | if (!OK_STAT(stat, DRQ_STAT, BAD_R_STAT)) { |
1da177e4 LT |
436 | if (stat & (ERR_STAT | DRQ_STAT)) |
437 | return task_error(drive, rq, __FUNCTION__, stat); | |
438 | /* No data yet, so wait for another IRQ. */ | |
439 | ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL); | |
440 | return ide_started; | |
441 | } | |
442 | ||
443 | ide_pio_datablock(drive, rq, 0); | |
444 | ||
445 | /* If it was the last datablock check status and finish transfer. */ | |
446 | if (!hwif->nleft) { | |
447 | stat = wait_drive_not_busy(drive); | |
73d7de0c | 448 | if (!OK_STAT(stat, 0, BAD_STAT)) |
1da177e4 LT |
449 | return task_error(drive, rq, __FUNCTION__, stat); |
450 | task_end_request(drive, rq, stat); | |
451 | return ide_stopped; | |
452 | } | |
453 | ||
454 | /* Still data left to transfer. */ | |
455 | ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL); | |
456 | ||
457 | return ide_started; | |
458 | } | |
1da177e4 LT |
459 | |
460 | /* | |
461 | * Handler for command with PIO data-out phase (Write/Write Multiple). | |
462 | */ | |
463 | static ide_startstop_t task_out_intr (ide_drive_t *drive) | |
464 | { | |
465 | ide_hwif_t *hwif = drive->hwif; | |
466 | struct request *rq = HWGROUP(drive)->rq; | |
c47137a9 | 467 | u8 stat = ide_read_status(drive); |
1da177e4 LT |
468 | |
469 | if (!OK_STAT(stat, DRIVE_READY, drive->bad_wstat)) | |
470 | return task_error(drive, rq, __FUNCTION__, stat); | |
471 | ||
472 | /* Deal with unexpected ATA data phase. */ | |
473 | if (((stat & DRQ_STAT) == 0) ^ !hwif->nleft) | |
474 | return task_error(drive, rq, __FUNCTION__, stat); | |
475 | ||
476 | if (!hwif->nleft) { | |
477 | task_end_request(drive, rq, stat); | |
478 | return ide_stopped; | |
479 | } | |
480 | ||
481 | /* Still data left to transfer. */ | |
482 | ide_pio_datablock(drive, rq, 1); | |
483 | ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL); | |
484 | ||
485 | return ide_started; | |
486 | } | |
487 | ||
f6e29e35 | 488 | static ide_startstop_t pre_task_out_intr(ide_drive_t *drive, struct request *rq) |
1da177e4 LT |
489 | { |
490 | ide_startstop_t startstop; | |
491 | ||
4906f3b4 | 492 | if (ide_wait_stat(&startstop, drive, DRQ_STAT, |
1da177e4 LT |
493 | drive->bad_wstat, WAIT_DRQ)) { |
494 | printk(KERN_ERR "%s: no DRQ after issuing %sWRITE%s\n", | |
495 | drive->name, | |
496 | drive->hwif->data_phase ? "MULT" : "", | |
497 | drive->addressing ? "_EXT" : ""); | |
498 | return startstop; | |
499 | } | |
500 | ||
501 | if (!drive->unmask) | |
502 | local_irq_disable(); | |
503 | ||
504 | ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL); | |
505 | ide_pio_datablock(drive, rq, 1); | |
506 | ||
507 | return ide_started; | |
508 | } | |
1da177e4 | 509 | |
ac026ff2 | 510 | int ide_raw_taskfile(ide_drive_t *drive, ide_task_t *task, u8 *buf, u16 nsect) |
1da177e4 LT |
511 | { |
512 | struct request rq; | |
513 | ||
514 | memset(&rq, 0, sizeof(rq)); | |
02ac2460 | 515 | rq.ref_count = 1; |
4aff5e23 | 516 | rq.cmd_type = REQ_TYPE_ATA_TASKFILE; |
1da177e4 LT |
517 | rq.buffer = buf; |
518 | ||
519 | /* | |
520 | * (ks) We transfer currently only whole sectors. | |
521 | * This is suffient for now. But, it would be great, | |
522 | * if we would find a solution to transfer any size. | |
523 | * To support special commands like READ LONG. | |
524 | */ | |
ac026ff2 BZ |
525 | rq.hard_nr_sectors = rq.nr_sectors = nsect; |
526 | rq.hard_cur_sectors = rq.current_nr_sectors = nsect; | |
1da177e4 | 527 | |
ac026ff2 BZ |
528 | if (task->tf_flags & IDE_TFLAG_WRITE) |
529 | rq.cmd_flags |= REQ_RW; | |
1da177e4 | 530 | |
ac026ff2 BZ |
531 | rq.special = task; |
532 | task->rq = &rq; | |
1da177e4 | 533 | |
1da177e4 LT |
534 | return ide_do_drive_cmd(drive, &rq, ide_wait); |
535 | } | |
536 | ||
1da177e4 LT |
537 | EXPORT_SYMBOL(ide_raw_taskfile); |
538 | ||
9a3c49be BZ |
539 | int ide_no_data_taskfile(ide_drive_t *drive, ide_task_t *task) |
540 | { | |
ac026ff2 | 541 | task->data_phase = TASKFILE_NO_DATA; |
9a3c49be | 542 | |
ac026ff2 | 543 | return ide_raw_taskfile(drive, task, NULL, 0); |
9a3c49be BZ |
544 | } |
545 | EXPORT_SYMBOL_GPL(ide_no_data_taskfile); | |
546 | ||
26a5b040 | 547 | #ifdef CONFIG_IDE_TASK_IOCTL |
1da177e4 LT |
548 | int ide_taskfile_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg) |
549 | { | |
550 | ide_task_request_t *req_task; | |
551 | ide_task_t args; | |
552 | u8 *outbuf = NULL; | |
553 | u8 *inbuf = NULL; | |
ac026ff2 | 554 | u8 *data_buf = NULL; |
1da177e4 LT |
555 | int err = 0; |
556 | int tasksize = sizeof(struct ide_task_request_s); | |
3a42bb22 AC |
557 | unsigned int taskin = 0; |
558 | unsigned int taskout = 0; | |
ac026ff2 | 559 | u16 nsect = 0; |
1da177e4 LT |
560 | char __user *buf = (char __user *)arg; |
561 | ||
562 | // printk("IDE Taskfile ...\n"); | |
563 | ||
f5e3c2fa | 564 | req_task = kzalloc(tasksize, GFP_KERNEL); |
1da177e4 | 565 | if (req_task == NULL) return -ENOMEM; |
1da177e4 LT |
566 | if (copy_from_user(req_task, buf, tasksize)) { |
567 | kfree(req_task); | |
568 | return -EFAULT; | |
569 | } | |
570 | ||
3a42bb22 AC |
571 | taskout = req_task->out_size; |
572 | taskin = req_task->in_size; | |
573 | ||
574 | if (taskin > 65536 || taskout > 65536) { | |
575 | err = -EINVAL; | |
576 | goto abort; | |
577 | } | |
1da177e4 LT |
578 | |
579 | if (taskout) { | |
580 | int outtotal = tasksize; | |
f5e3c2fa | 581 | outbuf = kzalloc(taskout, GFP_KERNEL); |
1da177e4 LT |
582 | if (outbuf == NULL) { |
583 | err = -ENOMEM; | |
584 | goto abort; | |
585 | } | |
1da177e4 LT |
586 | if (copy_from_user(outbuf, buf + outtotal, taskout)) { |
587 | err = -EFAULT; | |
588 | goto abort; | |
589 | } | |
590 | } | |
591 | ||
592 | if (taskin) { | |
593 | int intotal = tasksize + taskout; | |
f5e3c2fa | 594 | inbuf = kzalloc(taskin, GFP_KERNEL); |
1da177e4 LT |
595 | if (inbuf == NULL) { |
596 | err = -ENOMEM; | |
597 | goto abort; | |
598 | } | |
1da177e4 LT |
599 | if (copy_from_user(inbuf, buf + intotal, taskin)) { |
600 | err = -EFAULT; | |
601 | goto abort; | |
602 | } | |
603 | } | |
604 | ||
605 | memset(&args, 0, sizeof(ide_task_t)); | |
1da177e4 | 606 | |
650d841d BZ |
607 | memcpy(&args.tf_array[0], req_task->hob_ports, HDIO_DRIVE_HOB_HDR_SIZE - 2); |
608 | memcpy(&args.tf_array[6], req_task->io_ports, HDIO_DRIVE_TASK_HDR_SIZE); | |
866e2ec9 BZ |
609 | |
610 | args.data_phase = req_task->data_phase; | |
1da177e4 | 611 | |
657cc1a8 BZ |
612 | args.tf_flags = IDE_TFLAG_IO_16BIT | IDE_TFLAG_DEVICE | |
613 | IDE_TFLAG_IN_TF; | |
a3bbb9d8 | 614 | if (drive->addressing == 1) |
657cc1a8 | 615 | args.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_IN_HOB); |
a3bbb9d8 | 616 | |
74095a91 BZ |
617 | if (req_task->out_flags.all) { |
618 | args.tf_flags |= IDE_TFLAG_FLAGGED; | |
619 | ||
620 | if (req_task->out_flags.b.data) | |
621 | args.tf_flags |= IDE_TFLAG_OUT_DATA; | |
622 | ||
623 | if (req_task->out_flags.b.nsector_hob) | |
624 | args.tf_flags |= IDE_TFLAG_OUT_HOB_NSECT; | |
625 | if (req_task->out_flags.b.sector_hob) | |
626 | args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAL; | |
627 | if (req_task->out_flags.b.lcyl_hob) | |
628 | args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAM; | |
629 | if (req_task->out_flags.b.hcyl_hob) | |
630 | args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAH; | |
631 | ||
632 | if (req_task->out_flags.b.error_feature) | |
633 | args.tf_flags |= IDE_TFLAG_OUT_FEATURE; | |
634 | if (req_task->out_flags.b.nsector) | |
635 | args.tf_flags |= IDE_TFLAG_OUT_NSECT; | |
636 | if (req_task->out_flags.b.sector) | |
637 | args.tf_flags |= IDE_TFLAG_OUT_LBAL; | |
638 | if (req_task->out_flags.b.lcyl) | |
639 | args.tf_flags |= IDE_TFLAG_OUT_LBAM; | |
640 | if (req_task->out_flags.b.hcyl) | |
641 | args.tf_flags |= IDE_TFLAG_OUT_LBAH; | |
a3bbb9d8 BZ |
642 | } else { |
643 | args.tf_flags |= IDE_TFLAG_OUT_TF; | |
644 | if (args.tf_flags & IDE_TFLAG_LBA48) | |
645 | args.tf_flags |= IDE_TFLAG_OUT_HOB; | |
74095a91 BZ |
646 | } |
647 | ||
866e2ec9 BZ |
648 | if (req_task->in_flags.b.data) |
649 | args.tf_flags |= IDE_TFLAG_IN_DATA; | |
650 | ||
1da177e4 | 651 | switch(req_task->data_phase) { |
1da177e4 LT |
652 | case TASKFILE_MULTI_OUT: |
653 | if (!drive->mult_count) { | |
654 | /* (hs): give up if multcount is not set */ | |
655 | printk(KERN_ERR "%s: %s Multimode Write " \ | |
656 | "multcount is not set\n", | |
657 | drive->name, __FUNCTION__); | |
658 | err = -EPERM; | |
659 | goto abort; | |
660 | } | |
661 | /* fall through */ | |
662 | case TASKFILE_OUT: | |
ac026ff2 BZ |
663 | /* fall through */ |
664 | case TASKFILE_OUT_DMAQ: | |
665 | case TASKFILE_OUT_DMA: | |
666 | nsect = taskout / SECTOR_SIZE; | |
667 | data_buf = outbuf; | |
1da177e4 LT |
668 | break; |
669 | case TASKFILE_MULTI_IN: | |
670 | if (!drive->mult_count) { | |
671 | /* (hs): give up if multcount is not set */ | |
672 | printk(KERN_ERR "%s: %s Multimode Read failure " \ | |
673 | "multcount is not set\n", | |
674 | drive->name, __FUNCTION__); | |
675 | err = -EPERM; | |
676 | goto abort; | |
677 | } | |
678 | /* fall through */ | |
679 | case TASKFILE_IN: | |
ac026ff2 BZ |
680 | /* fall through */ |
681 | case TASKFILE_IN_DMAQ: | |
682 | case TASKFILE_IN_DMA: | |
683 | nsect = taskin / SECTOR_SIZE; | |
684 | data_buf = inbuf; | |
1da177e4 LT |
685 | break; |
686 | case TASKFILE_NO_DATA: | |
1da177e4 LT |
687 | break; |
688 | default: | |
689 | err = -EFAULT; | |
690 | goto abort; | |
691 | } | |
692 | ||
ac026ff2 BZ |
693 | if (req_task->req_cmd == IDE_DRIVE_TASK_NO_DATA) |
694 | nsect = 0; | |
695 | else if (!nsect) { | |
696 | nsect = (args.tf.hob_nsect << 8) | args.tf.nsect; | |
697 | ||
698 | if (!nsect) { | |
699 | printk(KERN_ERR "%s: in/out command without data\n", | |
700 | drive->name); | |
701 | err = -EFAULT; | |
702 | goto abort; | |
703 | } | |
704 | } | |
705 | ||
706 | if (req_task->req_cmd == IDE_DRIVE_TASK_RAW_WRITE) | |
707 | args.tf_flags |= IDE_TFLAG_WRITE; | |
708 | ||
709 | err = ide_raw_taskfile(drive, &args, data_buf, nsect); | |
710 | ||
650d841d BZ |
711 | memcpy(req_task->hob_ports, &args.tf_array[0], HDIO_DRIVE_HOB_HDR_SIZE - 2); |
712 | memcpy(req_task->io_ports, &args.tf_array[6], HDIO_DRIVE_TASK_HDR_SIZE); | |
866e2ec9 BZ |
713 | |
714 | if ((args.tf_flags & IDE_TFLAG_FLAGGED_SET_IN_FLAGS) && | |
715 | req_task->in_flags.all == 0) { | |
716 | req_task->in_flags.all = IDE_TASKFILE_STD_IN_FLAGS; | |
717 | if (drive->addressing == 1) | |
718 | req_task->in_flags.all |= (IDE_HOB_STD_IN_FLAGS << 8); | |
719 | } | |
1da177e4 LT |
720 | |
721 | if (copy_to_user(buf, req_task, tasksize)) { | |
722 | err = -EFAULT; | |
723 | goto abort; | |
724 | } | |
725 | if (taskout) { | |
726 | int outtotal = tasksize; | |
727 | if (copy_to_user(buf + outtotal, outbuf, taskout)) { | |
728 | err = -EFAULT; | |
729 | goto abort; | |
730 | } | |
731 | } | |
732 | if (taskin) { | |
733 | int intotal = tasksize + taskout; | |
734 | if (copy_to_user(buf + intotal, inbuf, taskin)) { | |
735 | err = -EFAULT; | |
736 | goto abort; | |
737 | } | |
738 | } | |
739 | abort: | |
740 | kfree(req_task); | |
6044ec88 JJ |
741 | kfree(outbuf); |
742 | kfree(inbuf); | |
1da177e4 LT |
743 | |
744 | // printk("IDE Taskfile ioctl ended. rc = %i\n", err); | |
745 | ||
1da177e4 LT |
746 | return err; |
747 | } | |
26a5b040 | 748 | #endif |
1da177e4 | 749 | |
1da177e4 LT |
750 | int ide_cmd_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg) |
751 | { | |
5a9e77af BZ |
752 | u8 *buf = NULL; |
753 | int bufsize = 0, err = 0; | |
754 | u8 args[4], xfer_rate = 0; | |
1da177e4 | 755 | ide_task_t tfargs; |
650d841d | 756 | struct ide_taskfile *tf = &tfargs.tf; |
5efe7c54 | 757 | struct hd_driveid *id = drive->id; |
1da177e4 LT |
758 | |
759 | if (NULL == (void *) arg) { | |
760 | struct request rq; | |
145b75e9 | 761 | |
1da177e4 | 762 | ide_init_drive_cmd(&rq); |
852738f3 | 763 | rq.cmd_type = REQ_TYPE_ATA_TASKFILE; |
145b75e9 | 764 | |
1da177e4 LT |
765 | return ide_do_drive_cmd(drive, &rq, ide_wait); |
766 | } | |
767 | ||
768 | if (copy_from_user(args, (void __user *)arg, 4)) | |
769 | return -EFAULT; | |
770 | ||
771 | memset(&tfargs, 0, sizeof(ide_task_t)); | |
650d841d | 772 | tf->feature = args[2]; |
5a9e77af BZ |
773 | if (args[0] == WIN_SMART) { |
774 | tf->nsect = args[3]; | |
775 | tf->lbal = args[1]; | |
776 | tf->lbam = 0x4f; | |
777 | tf->lbah = 0xc2; | |
778 | tfargs.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_IN_NSECT; | |
779 | } else { | |
780 | tf->nsect = args[1]; | |
781 | tfargs.tf_flags = IDE_TFLAG_OUT_FEATURE | | |
782 | IDE_TFLAG_OUT_NSECT | IDE_TFLAG_IN_NSECT; | |
783 | } | |
650d841d | 784 | tf->command = args[0]; |
5a9e77af | 785 | tfargs.data_phase = args[3] ? TASKFILE_IN : TASKFILE_NO_DATA; |
1da177e4 LT |
786 | |
787 | if (args[3]) { | |
5a9e77af BZ |
788 | tfargs.tf_flags |= IDE_TFLAG_IO_16BIT; |
789 | bufsize = SECTOR_WORDS * 4 * args[3]; | |
790 | buf = kzalloc(bufsize, GFP_KERNEL); | |
791 | if (buf == NULL) | |
1da177e4 | 792 | return -ENOMEM; |
1da177e4 | 793 | } |
5a9e77af | 794 | |
5efe7c54 BZ |
795 | if (tf->command == WIN_SETFEATURES && |
796 | tf->feature == SETFEATURES_XFER && | |
797 | tf->nsect >= XFER_SW_DMA_0 && | |
798 | (id->dma_ultra || id->dma_mword || id->dma_1word)) { | |
1da177e4 | 799 | xfer_rate = args[1]; |
af10f773 BZ |
800 | if (tf->nsect > XFER_UDMA_2 && !eighty_ninty_three(drive)) { |
801 | printk(KERN_WARNING "%s: UDMA speeds >UDMA33 cannot " | |
802 | "be set\n", drive->name); | |
1da177e4 | 803 | goto abort; |
af10f773 | 804 | } |
1da177e4 LT |
805 | } |
806 | ||
5a9e77af BZ |
807 | err = ide_raw_taskfile(drive, &tfargs, buf, args[3]); |
808 | ||
809 | args[0] = tf->status; | |
810 | args[1] = tf->error; | |
811 | args[2] = tf->nsect; | |
1da177e4 LT |
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: | |
5a9e77af | 819 | if (copy_to_user((void __user *)arg, &args, 4)) |
1da177e4 | 820 | err = -EFAULT; |
5a9e77af BZ |
821 | if (buf) { |
822 | if (copy_to_user((void __user *)(arg + 4), buf, bufsize)) | |
823 | err = -EFAULT; | |
824 | kfree(buf); | |
825 | } | |
1da177e4 LT |
826 | return err; |
827 | } | |
828 | ||
1da177e4 LT |
829 | int ide_task_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg) |
830 | { | |
831 | void __user *p = (void __user *)arg; | |
832 | int err = 0; | |
14b89ef9 BZ |
833 | u8 args[7]; |
834 | ide_task_t task; | |
1da177e4 LT |
835 | |
836 | if (copy_from_user(args, p, 7)) | |
837 | return -EFAULT; | |
14b89ef9 BZ |
838 | |
839 | memset(&task, 0, sizeof(task)); | |
840 | memcpy(&task.tf_array[7], &args[1], 6); | |
841 | task.tf.command = args[0]; | |
657cc1a8 | 842 | task.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; |
14b89ef9 BZ |
843 | |
844 | err = ide_no_data_taskfile(drive, &task); | |
845 | ||
846 | args[0] = task.tf.command; | |
847 | memcpy(&args[1], &task.tf_array[7], 6); | |
848 | ||
849 | if (copy_to_user(p, args, 7)) | |
1da177e4 | 850 | err = -EFAULT; |
14b89ef9 | 851 | |
1da177e4 LT |
852 | return err; |
853 | } |