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/types.h> |
12 | #include <linux/string.h> | |
13 | #include <linux/kernel.h> | |
651c29a1 | 14 | #include <linux/sched.h> |
1da177e4 | 15 | #include <linux/interrupt.h> |
1da177e4 | 16 | #include <linux/errno.h> |
1da177e4 | 17 | #include <linux/slab.h> |
1da177e4 LT |
18 | #include <linux/delay.h> |
19 | #include <linux/hdreg.h> | |
20 | #include <linux/ide.h> | |
55c16a70 | 21 | #include <linux/scatterlist.h> |
1da177e4 | 22 | |
1da177e4 LT |
23 | #include <asm/uaccess.h> |
24 | #include <asm/io.h> | |
25 | ||
089c5c7e | 26 | void ide_tf_dump(const char *s, struct ide_taskfile *tf) |
9e42237f | 27 | { |
807e35d6 BZ |
28 | #ifdef DEBUG |
29 | printk("%s: tf: feat 0x%02x nsect 0x%02x lbal 0x%02x " | |
30 | "lbam 0x%02x lbah 0x%02x dev 0x%02x cmd 0x%02x\n", | |
089c5c7e | 31 | s, tf->feature, tf->nsect, tf->lbal, |
807e35d6 | 32 | tf->lbam, tf->lbah, tf->device, tf->command); |
6dd9b837 BZ |
33 | printk("%s: hob: nsect 0x%02x lbal 0x%02x " |
34 | "lbam 0x%02x lbah 0x%02x\n", | |
089c5c7e | 35 | s, tf->hob_nsect, tf->hob_lbal, |
6dd9b837 | 36 | tf->hob_lbam, tf->hob_lbah); |
807e35d6 | 37 | #endif |
089c5c7e BZ |
38 | } |
39 | ||
1da177e4 LT |
40 | int taskfile_lib_get_identify (ide_drive_t *drive, u8 *buf) |
41 | { | |
22aa4b32 | 42 | struct ide_cmd cmd; |
650d841d | 43 | |
22aa4b32 BZ |
44 | memset(&cmd, 0, sizeof(cmd)); |
45 | cmd.tf.nsect = 0x01; | |
1da177e4 | 46 | if (drive->media == ide_disk) |
22aa4b32 | 47 | cmd.tf.command = ATA_CMD_ID_ATA; |
1da177e4 | 48 | else |
22aa4b32 | 49 | cmd.tf.command = ATA_CMD_ID_ATAPI; |
0dfb991c BZ |
50 | cmd.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; |
51 | cmd.protocol = ATA_PROT_PIO; | |
22aa4b32 BZ |
52 | |
53 | return ide_raw_taskfile(drive, &cmd, buf, 1); | |
1da177e4 LT |
54 | } |
55 | ||
1192e528 | 56 | static ide_startstop_t task_no_data_intr(ide_drive_t *); |
adb1af98 | 57 | static ide_startstop_t pre_task_out_intr(ide_drive_t *, struct ide_cmd *); |
901bd08a | 58 | static ide_startstop_t task_pio_intr(ide_drive_t *); |
1192e528 | 59 | |
adb1af98 | 60 | ide_startstop_t do_rw_taskfile(ide_drive_t *drive, struct ide_cmd *orig_cmd) |
1da177e4 | 61 | { |
898ec223 | 62 | ide_hwif_t *hwif = drive->hwif; |
adb1af98 | 63 | struct ide_cmd *cmd = &hwif->cmd; |
22aa4b32 | 64 | struct ide_taskfile *tf = &cmd->tf; |
57d7366b | 65 | ide_handler_t *handler = NULL; |
374e042c | 66 | const struct ide_tp_ops *tp_ops = hwif->tp_ops; |
f37afdac | 67 | const struct ide_dma_ops *dma_ops = hwif->dma_ops; |
1da177e4 | 68 | |
0dfb991c BZ |
69 | if (orig_cmd->protocol == ATA_PROT_PIO && |
70 | (orig_cmd->tf_flags & IDE_TFLAG_MULTI_PIO) && | |
71 | drive->mult_count == 0) { | |
72 | printk(KERN_ERR "%s: multimode not set!\n", drive->name); | |
73 | return ide_stopped; | |
1edee60e BZ |
74 | } |
75 | ||
adb1af98 BZ |
76 | if (orig_cmd->ftf_flags & IDE_FTFLAG_FLAGGED) |
77 | orig_cmd->ftf_flags |= IDE_FTFLAG_SET_IN_FLAGS; | |
1edee60e | 78 | |
adb1af98 | 79 | memcpy(cmd, orig_cmd, sizeof(*cmd)); |
d6ff9f64 | 80 | |
22aa4b32 | 81 | if ((cmd->tf_flags & IDE_TFLAG_DMA_PIO_FALLBACK) == 0) { |
089c5c7e | 82 | ide_tf_dump(drive->name, tf); |
374e042c | 83 | tp_ops->set_irq(hwif, 1); |
ed4af48f | 84 | SELECT_MASK(drive, 0); |
22aa4b32 | 85 | tp_ops->tf_load(drive, cmd); |
089c5c7e | 86 | } |
1da177e4 | 87 | |
0dfb991c BZ |
88 | switch (cmd->protocol) { |
89 | case ATA_PROT_PIO: | |
90 | if (cmd->tf_flags & IDE_TFLAG_WRITE) { | |
91 | tp_ops->exec_command(hwif, tf->command); | |
92 | ndelay(400); /* FIXME */ | |
93 | return pre_task_out_intr(drive, cmd); | |
94 | } | |
901bd08a | 95 | handler = task_pio_intr; |
1192e528 | 96 | /* fall-through */ |
0dfb991c | 97 | case ATA_PROT_NODATA: |
57d7366b BZ |
98 | if (handler == NULL) |
99 | handler = task_no_data_intr; | |
57d7366b BZ |
100 | ide_execute_command(drive, tf->command, handler, |
101 | WAIT_WORSTCASE, NULL); | |
1da177e4 | 102 | return ide_started; |
10d90157 | 103 | default: |
97100fc8 | 104 | if ((drive->dev_flags & IDE_DFLAG_USING_DMA) == 0 || |
e6830a86 | 105 | ide_build_sglist(drive, hwif->rq) == 0 || |
97100fc8 | 106 | dma_ops->dma_setup(drive)) |
10d90157 | 107 | return ide_stopped; |
5e37bdc0 BZ |
108 | dma_ops->dma_exec_cmd(drive, tf->command); |
109 | dma_ops->dma_start(drive); | |
74095a91 | 110 | return ide_started; |
1da177e4 | 111 | } |
1da177e4 | 112 | } |
f6e29e35 | 113 | EXPORT_SYMBOL_GPL(do_rw_taskfile); |
1da177e4 | 114 | |
d6ff9f64 | 115 | static ide_startstop_t task_no_data_intr(ide_drive_t *drive) |
1da177e4 | 116 | { |
b73c7ee2 | 117 | ide_hwif_t *hwif = drive->hwif; |
22aa4b32 BZ |
118 | struct ide_cmd *cmd = &hwif->cmd; |
119 | struct ide_taskfile *tf = &cmd->tf; | |
120 | int custom = (cmd->tf_flags & IDE_TFLAG_CUSTOM_HANDLER) ? 1 : 0; | |
d6ff9f64 | 121 | int retries = (custom && tf->command == ATA_CMD_INIT_DEV_PARAMS) ? 5 : 1; |
1da177e4 LT |
122 | u8 stat; |
123 | ||
90d2c6bc BZ |
124 | local_irq_enable_in_hardirq(); |
125 | ||
374e042c BZ |
126 | while (1) { |
127 | stat = hwif->tp_ops->read_status(hwif); | |
3a7d2484 | 128 | if ((stat & ATA_BUSY) == 0 || retries-- == 0) |
374e042c | 129 | break; |
1da177e4 | 130 | udelay(10); |
374e042c | 131 | }; |
1da177e4 | 132 | |
d6ff9f64 BZ |
133 | if (!OK_STAT(stat, ATA_DRDY, BAD_STAT)) { |
134 | if (custom && tf->command == ATA_CMD_SET_MULTI) { | |
135 | drive->mult_req = drive->mult_count = 0; | |
136 | drive->special.b.recalibrate = 1; | |
137 | (void)ide_dump_status(drive, __func__, stat); | |
138 | return ide_stopped; | |
139 | } else if (custom && tf->command == ATA_CMD_INIT_DEV_PARAMS) { | |
140 | if ((stat & (ATA_ERR | ATA_DRQ)) == 0) { | |
141 | ide_set_handler(drive, &task_no_data_intr, | |
142 | WAIT_WORSTCASE, NULL); | |
143 | return ide_started; | |
144 | } | |
145 | } | |
1da177e4 | 146 | return ide_error(drive, "task_no_data_intr", stat); |
d6ff9f64 | 147 | } |
c47137a9 | 148 | |
a09485df | 149 | if (custom && tf->command == ATA_CMD_IDLEIMMEDIATE) { |
22aa4b32 | 150 | hwif->tp_ops->tf_read(drive, cmd); |
4abdc6ee EO |
151 | if (tf->lbal != 0xc4) { |
152 | printk(KERN_ERR "%s: head unload failed!\n", | |
153 | drive->name); | |
154 | ide_tf_dump(drive->name, tf); | |
155 | } else | |
156 | drive->dev_flags |= IDE_DFLAG_PARKED; | |
a09485df | 157 | } else if (custom && tf->command == ATA_CMD_SET_MULTI) |
d6ff9f64 | 158 | drive->mult_count = drive->mult_req; |
1da177e4 | 159 | |
a09485df BZ |
160 | if (custom == 0 || tf->command == ATA_CMD_IDLEIMMEDIATE) { |
161 | struct request *rq = hwif->rq; | |
162 | u8 err = ide_read_error(drive); | |
163 | ||
164 | if (blk_pm_request(rq)) | |
165 | ide_complete_pm_rq(drive, rq); | |
166 | else { | |
167 | if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) | |
22aa4b32 | 168 | ide_complete_cmd(drive, cmd, stat, err); |
a09485df BZ |
169 | ide_complete_rq(drive, err); |
170 | } | |
171 | } | |
172 | ||
1da177e4 LT |
173 | return ide_stopped; |
174 | } | |
175 | ||
da6f4c7f | 176 | static u8 wait_drive_not_busy(ide_drive_t *drive) |
1da177e4 | 177 | { |
b73c7ee2 | 178 | ide_hwif_t *hwif = drive->hwif; |
b42fa133 | 179 | int retries; |
1da177e4 LT |
180 | u8 stat; |
181 | ||
182 | /* | |
f54feafa BZ |
183 | * Last sector was transfered, wait until device is ready. This can |
184 | * take up to 6 ms on some ATAPI devices, so we will wait max 10 ms. | |
1da177e4 | 185 | */ |
f54feafa | 186 | for (retries = 0; retries < 1000; retries++) { |
374e042c | 187 | stat = hwif->tp_ops->read_status(hwif); |
c47137a9 | 188 | |
3a7d2484 | 189 | if (stat & ATA_BUSY) |
b42fa133 MY |
190 | udelay(10); |
191 | else | |
192 | break; | |
193 | } | |
1da177e4 | 194 | |
3a7d2484 | 195 | if (stat & ATA_BUSY) |
1da177e4 LT |
196 | printk(KERN_ERR "%s: drive still BUSY!\n", drive->name); |
197 | ||
198 | return stat; | |
199 | } | |
200 | ||
adb1af98 | 201 | static void ide_pio_sector(ide_drive_t *drive, struct ide_cmd *cmd, |
92d3ab27 | 202 | unsigned int write) |
1da177e4 LT |
203 | { |
204 | ide_hwif_t *hwif = drive->hwif; | |
205 | struct scatterlist *sg = hwif->sg_table; | |
b6308ee0 | 206 | struct scatterlist *cursg = cmd->cursg; |
1da177e4 LT |
207 | struct page *page; |
208 | #ifdef CONFIG_HIGHMEM | |
209 | unsigned long flags; | |
210 | #endif | |
211 | unsigned int offset; | |
212 | u8 *buf; | |
213 | ||
b6308ee0 | 214 | cursg = cmd->cursg; |
55c16a70 JA |
215 | if (!cursg) { |
216 | cursg = sg; | |
b6308ee0 | 217 | cmd->cursg = sg; |
55c16a70 JA |
218 | } |
219 | ||
45711f1a | 220 | page = sg_page(cursg); |
b6308ee0 | 221 | offset = cursg->offset + cmd->cursg_ofs * SECTOR_SIZE; |
1da177e4 LT |
222 | |
223 | /* get the current page and offset */ | |
224 | page = nth_page(page, (offset >> PAGE_SHIFT)); | |
225 | offset %= PAGE_SIZE; | |
226 | ||
227 | #ifdef CONFIG_HIGHMEM | |
228 | local_irq_save(flags); | |
229 | #endif | |
230 | buf = kmap_atomic(page, KM_BIO_SRC_IRQ) + offset; | |
231 | ||
b6308ee0 BZ |
232 | cmd->nleft--; |
233 | cmd->cursg_ofs++; | |
1da177e4 | 234 | |
b6308ee0 BZ |
235 | if ((cmd->cursg_ofs * SECTOR_SIZE) == cursg->length) { |
236 | cmd->cursg = sg_next(cmd->cursg); | |
237 | cmd->cursg_ofs = 0; | |
1da177e4 LT |
238 | } |
239 | ||
240 | /* do the actual data transfer */ | |
241 | if (write) | |
adb1af98 | 242 | hwif->tp_ops->output_data(drive, cmd, buf, SECTOR_SIZE); |
1da177e4 | 243 | else |
adb1af98 | 244 | hwif->tp_ops->input_data(drive, cmd, buf, SECTOR_SIZE); |
1da177e4 LT |
245 | |
246 | kunmap_atomic(buf, KM_BIO_SRC_IRQ); | |
247 | #ifdef CONFIG_HIGHMEM | |
248 | local_irq_restore(flags); | |
249 | #endif | |
250 | } | |
251 | ||
adb1af98 | 252 | static void ide_pio_multi(ide_drive_t *drive, struct ide_cmd *cmd, |
92d3ab27 | 253 | unsigned int write) |
1da177e4 LT |
254 | { |
255 | unsigned int nsect; | |
256 | ||
b6308ee0 | 257 | nsect = min_t(unsigned int, cmd->nleft, drive->mult_count); |
1da177e4 | 258 | while (nsect--) |
adb1af98 | 259 | ide_pio_sector(drive, cmd, write); |
1da177e4 LT |
260 | } |
261 | ||
adb1af98 BZ |
262 | static void ide_pio_datablock(ide_drive_t *drive, struct ide_cmd *cmd, |
263 | unsigned int write) | |
1da177e4 | 264 | { |
35cf2b94 TH |
265 | u8 saved_io_32bit = drive->io_32bit; |
266 | ||
adb1af98 BZ |
267 | if (cmd->tf_flags & IDE_TFLAG_FS) |
268 | cmd->rq->errors = 0; | |
1da177e4 | 269 | |
22aa4b32 | 270 | if (cmd->tf_flags & IDE_TFLAG_IO_16BIT) |
e3d9a73a | 271 | drive->io_32bit = 0; |
35cf2b94 | 272 | |
651c29a1 AM |
273 | touch_softlockup_watchdog(); |
274 | ||
0dfb991c | 275 | if (cmd->tf_flags & IDE_TFLAG_MULTI_PIO) |
adb1af98 | 276 | ide_pio_multi(drive, cmd, write); |
0dfb991c | 277 | else |
adb1af98 | 278 | ide_pio_sector(drive, cmd, write); |
35cf2b94 TH |
279 | |
280 | drive->io_32bit = saved_io_32bit; | |
1da177e4 LT |
281 | } |
282 | ||
041cea10 | 283 | static void ide_error_cmd(ide_drive_t *drive, struct ide_cmd *cmd) |
1da177e4 | 284 | { |
adb1af98 | 285 | if (cmd->tf_flags & IDE_TFLAG_FS) { |
b6308ee0 | 286 | int sectors = cmd->nsect - cmd->nleft; |
1da177e4 | 287 | |
0dfb991c BZ |
288 | if (cmd->protocol == ATA_PROT_PIO && |
289 | ((cmd->tf_flags & IDE_TFLAG_WRITE) || cmd->nleft == 0)) { | |
290 | if (cmd->tf_flags & IDE_TFLAG_MULTI_PIO) | |
291 | sectors -= drive->mult_count; | |
292 | else | |
293 | sectors--; | |
1da177e4 LT |
294 | } |
295 | ||
c152cc1a BZ |
296 | if (sectors > 0) |
297 | ide_end_request(drive, 1, sectors); | |
1da177e4 | 298 | } |
1da177e4 LT |
299 | } |
300 | ||
adb1af98 | 301 | void ide_finish_cmd(ide_drive_t *drive, struct ide_cmd *cmd, u8 stat) |
1da177e4 | 302 | { |
adb1af98 | 303 | if ((cmd->tf_flags & IDE_TFLAG_FS) == 0) { |
64a57fe4 | 304 | u8 err = ide_read_error(drive); |
1da177e4 | 305 | |
adb1af98 | 306 | ide_complete_cmd(drive, cmd, stat, err); |
a09485df | 307 | ide_complete_rq(drive, err); |
4d7a984b | 308 | return; |
1da177e4 LT |
309 | } |
310 | ||
adb1af98 | 311 | ide_end_request(drive, 1, cmd->rq->nr_sectors); |
1da177e4 LT |
312 | } |
313 | ||
314 | /* | |
901bd08a | 315 | * Handler for command with PIO data phase. |
1da177e4 | 316 | */ |
901bd08a | 317 | static ide_startstop_t task_pio_intr(ide_drive_t *drive) |
1da177e4 LT |
318 | { |
319 | ide_hwif_t *hwif = drive->hwif; | |
adb1af98 | 320 | struct ide_cmd *cmd = &drive->hwif->cmd; |
374e042c | 321 | u8 stat = hwif->tp_ops->read_status(hwif); |
901bd08a | 322 | u8 write = !!(cmd->tf_flags & IDE_TFLAG_WRITE); |
1da177e4 | 323 | |
901bd08a BZ |
324 | if (write == 0) { |
325 | /* Error? */ | |
326 | if (stat & ATA_ERR) | |
0a1248c5 | 327 | goto out_err; |
1da177e4 | 328 | |
901bd08a | 329 | /* Didn't want any data? Odd. */ |
151055ed BZ |
330 | if ((stat & ATA_DRQ) == 0) { |
331 | /* Command all done? */ | |
0a1248c5 BZ |
332 | if (OK_STAT(stat, ATA_DRDY, ATA_BUSY)) |
333 | goto out_end; | |
151055ed BZ |
334 | |
335 | /* Assume it was a spurious irq */ | |
0a1248c5 | 336 | goto out_wait; |
151055ed | 337 | } |
901bd08a BZ |
338 | } else { |
339 | if (!OK_STAT(stat, DRIVE_READY, drive->bad_wstat)) | |
0a1248c5 | 340 | goto out_err; |
1da177e4 | 341 | |
901bd08a BZ |
342 | /* Deal with unexpected ATA data phase. */ |
343 | if (((stat & ATA_DRQ) == 0) ^ (cmd->nleft == 0)) | |
0a1248c5 | 344 | goto out_err; |
901bd08a BZ |
345 | } |
346 | ||
0a1248c5 BZ |
347 | if (write && cmd->nleft == 0) |
348 | goto out_end; | |
1da177e4 LT |
349 | |
350 | /* Still data left to transfer. */ | |
901bd08a | 351 | ide_pio_datablock(drive, cmd, write); |
1da177e4 | 352 | |
901bd08a BZ |
353 | /* Are we done? Check status and finish transfer. */ |
354 | if (write == 0 && cmd->nleft == 0) { | |
355 | stat = wait_drive_not_busy(drive); | |
356 | if (!OK_STAT(stat, 0, BAD_STAT)) | |
0a1248c5 | 357 | goto out_err; |
1da177e4 | 358 | |
0a1248c5 BZ |
359 | goto out_end; |
360 | } | |
361 | out_wait: | |
1da177e4 | 362 | /* Still data left to transfer. */ |
901bd08a | 363 | ide_set_handler(drive, &task_pio_intr, WAIT_WORSTCASE, NULL); |
1da177e4 | 364 | return ide_started; |
0a1248c5 BZ |
365 | out_end: |
366 | ide_finish_cmd(drive, cmd, stat); | |
367 | return ide_stopped; | |
368 | out_err: | |
041cea10 BZ |
369 | ide_error_cmd(drive, cmd); |
370 | return ide_error(drive, __func__, stat); | |
1da177e4 LT |
371 | } |
372 | ||
adb1af98 BZ |
373 | static ide_startstop_t pre_task_out_intr(ide_drive_t *drive, |
374 | struct ide_cmd *cmd) | |
1da177e4 LT |
375 | { |
376 | ide_startstop_t startstop; | |
377 | ||
3a7d2484 | 378 | if (ide_wait_stat(&startstop, drive, ATA_DRQ, |
1da177e4 LT |
379 | drive->bad_wstat, WAIT_DRQ)) { |
380 | printk(KERN_ERR "%s: no DRQ after issuing %sWRITE%s\n", | |
c7db966b | 381 | drive->name, |
0dfb991c | 382 | (cmd->tf_flags & IDE_TFLAG_MULTI_PIO) ? "MULT" : "", |
97100fc8 | 383 | (drive->dev_flags & IDE_DFLAG_LBA48) ? "_EXT" : ""); |
1da177e4 LT |
384 | return startstop; |
385 | } | |
386 | ||
97100fc8 | 387 | if ((drive->dev_flags & IDE_DFLAG_UNMASK) == 0) |
1da177e4 LT |
388 | local_irq_disable(); |
389 | ||
901bd08a BZ |
390 | ide_set_handler(drive, &task_pio_intr, WAIT_WORSTCASE, NULL); |
391 | ||
adb1af98 | 392 | ide_pio_datablock(drive, cmd, 1); |
1da177e4 LT |
393 | |
394 | return ide_started; | |
395 | } | |
1da177e4 | 396 | |
22aa4b32 BZ |
397 | int ide_raw_taskfile(ide_drive_t *drive, struct ide_cmd *cmd, u8 *buf, |
398 | u16 nsect) | |
1da177e4 | 399 | { |
154ed280 FT |
400 | struct request *rq; |
401 | int error; | |
1da177e4 | 402 | |
154ed280 FT |
403 | rq = blk_get_request(drive->queue, READ, __GFP_WAIT); |
404 | rq->cmd_type = REQ_TYPE_ATA_TASKFILE; | |
405 | rq->buffer = buf; | |
1da177e4 LT |
406 | |
407 | /* | |
408 | * (ks) We transfer currently only whole sectors. | |
409 | * This is suffient for now. But, it would be great, | |
410 | * if we would find a solution to transfer any size. | |
411 | * To support special commands like READ LONG. | |
412 | */ | |
154ed280 FT |
413 | rq->hard_nr_sectors = rq->nr_sectors = nsect; |
414 | rq->hard_cur_sectors = rq->current_nr_sectors = nsect; | |
1da177e4 | 415 | |
22aa4b32 | 416 | if (cmd->tf_flags & IDE_TFLAG_WRITE) |
154ed280 | 417 | rq->cmd_flags |= REQ_RW; |
1da177e4 | 418 | |
22aa4b32 BZ |
419 | rq->special = cmd; |
420 | cmd->rq = rq; | |
1da177e4 | 421 | |
154ed280 FT |
422 | error = blk_execute_rq(drive->queue, NULL, rq, 0); |
423 | blk_put_request(rq); | |
424 | ||
425 | return error; | |
1da177e4 LT |
426 | } |
427 | ||
1da177e4 LT |
428 | EXPORT_SYMBOL(ide_raw_taskfile); |
429 | ||
22aa4b32 | 430 | int ide_no_data_taskfile(ide_drive_t *drive, struct ide_cmd *cmd) |
9a3c49be | 431 | { |
0dfb991c | 432 | cmd->protocol = ATA_PROT_NODATA; |
9a3c49be | 433 | |
22aa4b32 | 434 | return ide_raw_taskfile(drive, cmd, NULL, 0); |
9a3c49be BZ |
435 | } |
436 | EXPORT_SYMBOL_GPL(ide_no_data_taskfile); | |
437 | ||
26a5b040 | 438 | #ifdef CONFIG_IDE_TASK_IOCTL |
22aa4b32 | 439 | int ide_taskfile_ioctl(ide_drive_t *drive, unsigned long arg) |
1da177e4 LT |
440 | { |
441 | ide_task_request_t *req_task; | |
22aa4b32 | 442 | struct ide_cmd cmd; |
1da177e4 LT |
443 | u8 *outbuf = NULL; |
444 | u8 *inbuf = NULL; | |
ac026ff2 | 445 | u8 *data_buf = NULL; |
1da177e4 LT |
446 | int err = 0; |
447 | int tasksize = sizeof(struct ide_task_request_s); | |
3a42bb22 AC |
448 | unsigned int taskin = 0; |
449 | unsigned int taskout = 0; | |
ac026ff2 | 450 | u16 nsect = 0; |
1da177e4 LT |
451 | char __user *buf = (char __user *)arg; |
452 | ||
453 | // printk("IDE Taskfile ...\n"); | |
454 | ||
f5e3c2fa | 455 | req_task = kzalloc(tasksize, GFP_KERNEL); |
1da177e4 | 456 | if (req_task == NULL) return -ENOMEM; |
1da177e4 LT |
457 | if (copy_from_user(req_task, buf, tasksize)) { |
458 | kfree(req_task); | |
459 | return -EFAULT; | |
460 | } | |
461 | ||
3a42bb22 AC |
462 | taskout = req_task->out_size; |
463 | taskin = req_task->in_size; | |
464 | ||
465 | if (taskin > 65536 || taskout > 65536) { | |
466 | err = -EINVAL; | |
467 | goto abort; | |
468 | } | |
1da177e4 LT |
469 | |
470 | if (taskout) { | |
471 | int outtotal = tasksize; | |
f5e3c2fa | 472 | outbuf = kzalloc(taskout, GFP_KERNEL); |
1da177e4 LT |
473 | if (outbuf == NULL) { |
474 | err = -ENOMEM; | |
475 | goto abort; | |
476 | } | |
1da177e4 LT |
477 | if (copy_from_user(outbuf, buf + outtotal, taskout)) { |
478 | err = -EFAULT; | |
479 | goto abort; | |
480 | } | |
481 | } | |
482 | ||
483 | if (taskin) { | |
484 | int intotal = tasksize + taskout; | |
f5e3c2fa | 485 | inbuf = kzalloc(taskin, GFP_KERNEL); |
1da177e4 LT |
486 | if (inbuf == NULL) { |
487 | err = -ENOMEM; | |
488 | goto abort; | |
489 | } | |
1da177e4 LT |
490 | if (copy_from_user(inbuf, buf + intotal, taskin)) { |
491 | err = -EFAULT; | |
492 | goto abort; | |
493 | } | |
494 | } | |
495 | ||
22aa4b32 | 496 | memset(&cmd, 0, sizeof(cmd)); |
1da177e4 | 497 | |
22aa4b32 BZ |
498 | memcpy(&cmd.tf_array[0], req_task->hob_ports, |
499 | HDIO_DRIVE_HOB_HDR_SIZE - 2); | |
500 | memcpy(&cmd.tf_array[6], req_task->io_ports, | |
501 | HDIO_DRIVE_TASK_HDR_SIZE); | |
866e2ec9 | 502 | |
22aa4b32 BZ |
503 | cmd.tf_flags = IDE_TFLAG_IO_16BIT | IDE_TFLAG_DEVICE | |
504 | IDE_TFLAG_IN_TF; | |
1da177e4 | 505 | |
97100fc8 | 506 | if (drive->dev_flags & IDE_DFLAG_LBA48) |
22aa4b32 | 507 | cmd.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_IN_HOB); |
a3bbb9d8 | 508 | |
74095a91 | 509 | if (req_task->out_flags.all) { |
22aa4b32 | 510 | cmd.ftf_flags |= IDE_FTFLAG_FLAGGED; |
74095a91 BZ |
511 | |
512 | if (req_task->out_flags.b.data) | |
22aa4b32 | 513 | cmd.ftf_flags |= IDE_FTFLAG_OUT_DATA; |
74095a91 BZ |
514 | |
515 | if (req_task->out_flags.b.nsector_hob) | |
22aa4b32 | 516 | cmd.tf_flags |= IDE_TFLAG_OUT_HOB_NSECT; |
74095a91 | 517 | if (req_task->out_flags.b.sector_hob) |
22aa4b32 | 518 | cmd.tf_flags |= IDE_TFLAG_OUT_HOB_LBAL; |
74095a91 | 519 | if (req_task->out_flags.b.lcyl_hob) |
22aa4b32 | 520 | cmd.tf_flags |= IDE_TFLAG_OUT_HOB_LBAM; |
74095a91 | 521 | if (req_task->out_flags.b.hcyl_hob) |
22aa4b32 | 522 | cmd.tf_flags |= IDE_TFLAG_OUT_HOB_LBAH; |
74095a91 BZ |
523 | |
524 | if (req_task->out_flags.b.error_feature) | |
22aa4b32 | 525 | cmd.tf_flags |= IDE_TFLAG_OUT_FEATURE; |
74095a91 | 526 | if (req_task->out_flags.b.nsector) |
22aa4b32 | 527 | cmd.tf_flags |= IDE_TFLAG_OUT_NSECT; |
74095a91 | 528 | if (req_task->out_flags.b.sector) |
22aa4b32 | 529 | cmd.tf_flags |= IDE_TFLAG_OUT_LBAL; |
74095a91 | 530 | if (req_task->out_flags.b.lcyl) |
22aa4b32 | 531 | cmd.tf_flags |= IDE_TFLAG_OUT_LBAM; |
74095a91 | 532 | if (req_task->out_flags.b.hcyl) |
22aa4b32 | 533 | cmd.tf_flags |= IDE_TFLAG_OUT_LBAH; |
a3bbb9d8 | 534 | } else { |
22aa4b32 BZ |
535 | cmd.tf_flags |= IDE_TFLAG_OUT_TF; |
536 | if (cmd.tf_flags & IDE_TFLAG_LBA48) | |
537 | cmd.tf_flags |= IDE_TFLAG_OUT_HOB; | |
74095a91 BZ |
538 | } |
539 | ||
866e2ec9 | 540 | if (req_task->in_flags.b.data) |
22aa4b32 | 541 | cmd.ftf_flags |= IDE_FTFLAG_IN_DATA; |
866e2ec9 | 542 | |
04d09b0e BZ |
543 | if (req_task->req_cmd == IDE_DRIVE_TASK_RAW_WRITE) { |
544 | /* fixup data phase if needed */ | |
545 | if (req_task->data_phase == TASKFILE_IN_DMAQ || | |
546 | req_task->data_phase == TASKFILE_IN_DMA) | |
0dfb991c | 547 | cmd.tf_flags |= IDE_TFLAG_WRITE; |
04d09b0e BZ |
548 | } |
549 | ||
0dfb991c BZ |
550 | cmd.protocol = ATA_PROT_DMA; |
551 | ||
552 | switch (req_task->data_phase) { | |
1da177e4 LT |
553 | case TASKFILE_MULTI_OUT: |
554 | if (!drive->mult_count) { | |
555 | /* (hs): give up if multcount is not set */ | |
556 | printk(KERN_ERR "%s: %s Multimode Write " \ | |
557 | "multcount is not set\n", | |
eb63963a | 558 | drive->name, __func__); |
1da177e4 LT |
559 | err = -EPERM; |
560 | goto abort; | |
561 | } | |
0dfb991c | 562 | cmd.tf_flags |= IDE_TFLAG_MULTI_PIO; |
1da177e4 LT |
563 | /* fall through */ |
564 | case TASKFILE_OUT: | |
0dfb991c | 565 | cmd.protocol = ATA_PROT_PIO; |
ac026ff2 BZ |
566 | /* fall through */ |
567 | case TASKFILE_OUT_DMAQ: | |
568 | case TASKFILE_OUT_DMA: | |
04d09b0e | 569 | cmd.tf_flags |= IDE_TFLAG_WRITE; |
ac026ff2 BZ |
570 | nsect = taskout / SECTOR_SIZE; |
571 | data_buf = outbuf; | |
1da177e4 LT |
572 | break; |
573 | case TASKFILE_MULTI_IN: | |
574 | if (!drive->mult_count) { | |
575 | /* (hs): give up if multcount is not set */ | |
576 | printk(KERN_ERR "%s: %s Multimode Read failure " \ | |
577 | "multcount is not set\n", | |
eb63963a | 578 | drive->name, __func__); |
1da177e4 LT |
579 | err = -EPERM; |
580 | goto abort; | |
581 | } | |
0dfb991c | 582 | cmd.tf_flags |= IDE_TFLAG_MULTI_PIO; |
1da177e4 LT |
583 | /* fall through */ |
584 | case TASKFILE_IN: | |
0dfb991c | 585 | cmd.protocol = ATA_PROT_PIO; |
ac026ff2 BZ |
586 | /* fall through */ |
587 | case TASKFILE_IN_DMAQ: | |
588 | case TASKFILE_IN_DMA: | |
589 | nsect = taskin / SECTOR_SIZE; | |
590 | data_buf = inbuf; | |
1da177e4 LT |
591 | break; |
592 | case TASKFILE_NO_DATA: | |
0dfb991c | 593 | cmd.protocol = ATA_PROT_NODATA; |
1da177e4 LT |
594 | break; |
595 | default: | |
596 | err = -EFAULT; | |
597 | goto abort; | |
598 | } | |
599 | ||
ac026ff2 BZ |
600 | if (req_task->req_cmd == IDE_DRIVE_TASK_NO_DATA) |
601 | nsect = 0; | |
602 | else if (!nsect) { | |
22aa4b32 | 603 | nsect = (cmd.tf.hob_nsect << 8) | cmd.tf.nsect; |
ac026ff2 BZ |
604 | |
605 | if (!nsect) { | |
606 | printk(KERN_ERR "%s: in/out command without data\n", | |
607 | drive->name); | |
608 | err = -EFAULT; | |
609 | goto abort; | |
610 | } | |
611 | } | |
612 | ||
22aa4b32 | 613 | err = ide_raw_taskfile(drive, &cmd, data_buf, nsect); |
ac026ff2 | 614 | |
22aa4b32 BZ |
615 | memcpy(req_task->hob_ports, &cmd.tf_array[0], |
616 | HDIO_DRIVE_HOB_HDR_SIZE - 2); | |
617 | memcpy(req_task->io_ports, &cmd.tf_array[6], | |
618 | HDIO_DRIVE_TASK_HDR_SIZE); | |
866e2ec9 | 619 | |
22aa4b32 | 620 | if ((cmd.ftf_flags & IDE_FTFLAG_SET_IN_FLAGS) && |
866e2ec9 BZ |
621 | req_task->in_flags.all == 0) { |
622 | req_task->in_flags.all = IDE_TASKFILE_STD_IN_FLAGS; | |
97100fc8 | 623 | if (drive->dev_flags & IDE_DFLAG_LBA48) |
866e2ec9 BZ |
624 | req_task->in_flags.all |= (IDE_HOB_STD_IN_FLAGS << 8); |
625 | } | |
1da177e4 LT |
626 | |
627 | if (copy_to_user(buf, req_task, tasksize)) { | |
628 | err = -EFAULT; | |
629 | goto abort; | |
630 | } | |
631 | if (taskout) { | |
632 | int outtotal = tasksize; | |
633 | if (copy_to_user(buf + outtotal, outbuf, taskout)) { | |
634 | err = -EFAULT; | |
635 | goto abort; | |
636 | } | |
637 | } | |
638 | if (taskin) { | |
639 | int intotal = tasksize + taskout; | |
640 | if (copy_to_user(buf + intotal, inbuf, taskin)) { | |
641 | err = -EFAULT; | |
642 | goto abort; | |
643 | } | |
644 | } | |
645 | abort: | |
646 | kfree(req_task); | |
6044ec88 JJ |
647 | kfree(outbuf); |
648 | kfree(inbuf); | |
1da177e4 LT |
649 | |
650 | // printk("IDE Taskfile ioctl ended. rc = %i\n", err); | |
651 | ||
1da177e4 LT |
652 | return err; |
653 | } | |
26a5b040 | 654 | #endif |