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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 | |
e7fedc3c | 149 | if (custom && tf->command == ATA_CMD_SET_MULTI) |
d6ff9f64 | 150 | drive->mult_count = drive->mult_req; |
1da177e4 | 151 | |
a09485df BZ |
152 | if (custom == 0 || tf->command == ATA_CMD_IDLEIMMEDIATE) { |
153 | struct request *rq = hwif->rq; | |
154 | u8 err = ide_read_error(drive); | |
155 | ||
156 | if (blk_pm_request(rq)) | |
157 | ide_complete_pm_rq(drive, rq); | |
158 | else { | |
e7fedc3c BZ |
159 | if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE || |
160 | tf->command == ATA_CMD_IDLEIMMEDIATE) | |
22aa4b32 | 161 | ide_complete_cmd(drive, cmd, stat, err); |
a09485df BZ |
162 | ide_complete_rq(drive, err); |
163 | } | |
164 | } | |
165 | ||
1da177e4 LT |
166 | return ide_stopped; |
167 | } | |
168 | ||
da6f4c7f | 169 | static u8 wait_drive_not_busy(ide_drive_t *drive) |
1da177e4 | 170 | { |
b73c7ee2 | 171 | ide_hwif_t *hwif = drive->hwif; |
b42fa133 | 172 | int retries; |
1da177e4 LT |
173 | u8 stat; |
174 | ||
175 | /* | |
f54feafa BZ |
176 | * Last sector was transfered, wait until device is ready. This can |
177 | * take up to 6 ms on some ATAPI devices, so we will wait max 10 ms. | |
1da177e4 | 178 | */ |
f54feafa | 179 | for (retries = 0; retries < 1000; retries++) { |
374e042c | 180 | stat = hwif->tp_ops->read_status(hwif); |
c47137a9 | 181 | |
3a7d2484 | 182 | if (stat & ATA_BUSY) |
b42fa133 MY |
183 | udelay(10); |
184 | else | |
185 | break; | |
186 | } | |
1da177e4 | 187 | |
3a7d2484 | 188 | if (stat & ATA_BUSY) |
1da177e4 LT |
189 | printk(KERN_ERR "%s: drive still BUSY!\n", drive->name); |
190 | ||
191 | return stat; | |
192 | } | |
193 | ||
adb1af98 | 194 | static void ide_pio_sector(ide_drive_t *drive, struct ide_cmd *cmd, |
92d3ab27 | 195 | unsigned int write) |
1da177e4 LT |
196 | { |
197 | ide_hwif_t *hwif = drive->hwif; | |
198 | struct scatterlist *sg = hwif->sg_table; | |
b6308ee0 | 199 | struct scatterlist *cursg = cmd->cursg; |
1da177e4 LT |
200 | struct page *page; |
201 | #ifdef CONFIG_HIGHMEM | |
202 | unsigned long flags; | |
203 | #endif | |
204 | unsigned int offset; | |
205 | u8 *buf; | |
206 | ||
b6308ee0 | 207 | cursg = cmd->cursg; |
55c16a70 JA |
208 | if (!cursg) { |
209 | cursg = sg; | |
b6308ee0 | 210 | cmd->cursg = sg; |
55c16a70 JA |
211 | } |
212 | ||
45711f1a | 213 | page = sg_page(cursg); |
b6308ee0 | 214 | offset = cursg->offset + cmd->cursg_ofs * SECTOR_SIZE; |
1da177e4 LT |
215 | |
216 | /* get the current page and offset */ | |
217 | page = nth_page(page, (offset >> PAGE_SHIFT)); | |
218 | offset %= PAGE_SIZE; | |
219 | ||
220 | #ifdef CONFIG_HIGHMEM | |
221 | local_irq_save(flags); | |
222 | #endif | |
223 | buf = kmap_atomic(page, KM_BIO_SRC_IRQ) + offset; | |
224 | ||
b6308ee0 BZ |
225 | cmd->nleft--; |
226 | cmd->cursg_ofs++; | |
1da177e4 | 227 | |
b6308ee0 BZ |
228 | if ((cmd->cursg_ofs * SECTOR_SIZE) == cursg->length) { |
229 | cmd->cursg = sg_next(cmd->cursg); | |
230 | cmd->cursg_ofs = 0; | |
1da177e4 LT |
231 | } |
232 | ||
233 | /* do the actual data transfer */ | |
234 | if (write) | |
adb1af98 | 235 | hwif->tp_ops->output_data(drive, cmd, buf, SECTOR_SIZE); |
1da177e4 | 236 | else |
adb1af98 | 237 | hwif->tp_ops->input_data(drive, cmd, buf, SECTOR_SIZE); |
1da177e4 LT |
238 | |
239 | kunmap_atomic(buf, KM_BIO_SRC_IRQ); | |
240 | #ifdef CONFIG_HIGHMEM | |
241 | local_irq_restore(flags); | |
242 | #endif | |
243 | } | |
244 | ||
adb1af98 | 245 | static void ide_pio_multi(ide_drive_t *drive, struct ide_cmd *cmd, |
92d3ab27 | 246 | unsigned int write) |
1da177e4 LT |
247 | { |
248 | unsigned int nsect; | |
249 | ||
b6308ee0 | 250 | nsect = min_t(unsigned int, cmd->nleft, drive->mult_count); |
1da177e4 | 251 | while (nsect--) |
adb1af98 | 252 | ide_pio_sector(drive, cmd, write); |
1da177e4 LT |
253 | } |
254 | ||
adb1af98 BZ |
255 | static void ide_pio_datablock(ide_drive_t *drive, struct ide_cmd *cmd, |
256 | unsigned int write) | |
1da177e4 | 257 | { |
35cf2b94 TH |
258 | u8 saved_io_32bit = drive->io_32bit; |
259 | ||
adb1af98 BZ |
260 | if (cmd->tf_flags & IDE_TFLAG_FS) |
261 | cmd->rq->errors = 0; | |
1da177e4 | 262 | |
22aa4b32 | 263 | if (cmd->tf_flags & IDE_TFLAG_IO_16BIT) |
e3d9a73a | 264 | drive->io_32bit = 0; |
35cf2b94 | 265 | |
651c29a1 AM |
266 | touch_softlockup_watchdog(); |
267 | ||
0dfb991c | 268 | if (cmd->tf_flags & IDE_TFLAG_MULTI_PIO) |
adb1af98 | 269 | ide_pio_multi(drive, cmd, write); |
0dfb991c | 270 | else |
adb1af98 | 271 | ide_pio_sector(drive, cmd, write); |
35cf2b94 TH |
272 | |
273 | drive->io_32bit = saved_io_32bit; | |
1da177e4 LT |
274 | } |
275 | ||
041cea10 | 276 | static void ide_error_cmd(ide_drive_t *drive, struct ide_cmd *cmd) |
1da177e4 | 277 | { |
adb1af98 | 278 | if (cmd->tf_flags & IDE_TFLAG_FS) { |
b6308ee0 | 279 | int sectors = cmd->nsect - cmd->nleft; |
1da177e4 | 280 | |
0dfb991c BZ |
281 | if (cmd->protocol == ATA_PROT_PIO && |
282 | ((cmd->tf_flags & IDE_TFLAG_WRITE) || cmd->nleft == 0)) { | |
283 | if (cmd->tf_flags & IDE_TFLAG_MULTI_PIO) | |
284 | sectors -= drive->mult_count; | |
285 | else | |
286 | sectors--; | |
1da177e4 LT |
287 | } |
288 | ||
c152cc1a BZ |
289 | if (sectors > 0) |
290 | ide_end_request(drive, 1, sectors); | |
1da177e4 | 291 | } |
1da177e4 LT |
292 | } |
293 | ||
adb1af98 | 294 | void ide_finish_cmd(ide_drive_t *drive, struct ide_cmd *cmd, u8 stat) |
1da177e4 | 295 | { |
adb1af98 | 296 | if ((cmd->tf_flags & IDE_TFLAG_FS) == 0) { |
64a57fe4 | 297 | u8 err = ide_read_error(drive); |
1da177e4 | 298 | |
adb1af98 | 299 | ide_complete_cmd(drive, cmd, stat, err); |
a09485df | 300 | ide_complete_rq(drive, err); |
4d7a984b | 301 | return; |
1da177e4 LT |
302 | } |
303 | ||
adb1af98 | 304 | ide_end_request(drive, 1, cmd->rq->nr_sectors); |
1da177e4 LT |
305 | } |
306 | ||
307 | /* | |
901bd08a | 308 | * Handler for command with PIO data phase. |
1da177e4 | 309 | */ |
901bd08a | 310 | static ide_startstop_t task_pio_intr(ide_drive_t *drive) |
1da177e4 LT |
311 | { |
312 | ide_hwif_t *hwif = drive->hwif; | |
adb1af98 | 313 | struct ide_cmd *cmd = &drive->hwif->cmd; |
374e042c | 314 | u8 stat = hwif->tp_ops->read_status(hwif); |
901bd08a | 315 | u8 write = !!(cmd->tf_flags & IDE_TFLAG_WRITE); |
1da177e4 | 316 | |
901bd08a BZ |
317 | if (write == 0) { |
318 | /* Error? */ | |
319 | if (stat & ATA_ERR) | |
0a1248c5 | 320 | goto out_err; |
1da177e4 | 321 | |
901bd08a | 322 | /* Didn't want any data? Odd. */ |
151055ed BZ |
323 | if ((stat & ATA_DRQ) == 0) { |
324 | /* Command all done? */ | |
0a1248c5 BZ |
325 | if (OK_STAT(stat, ATA_DRDY, ATA_BUSY)) |
326 | goto out_end; | |
151055ed BZ |
327 | |
328 | /* Assume it was a spurious irq */ | |
0a1248c5 | 329 | goto out_wait; |
151055ed | 330 | } |
901bd08a BZ |
331 | } else { |
332 | if (!OK_STAT(stat, DRIVE_READY, drive->bad_wstat)) | |
0a1248c5 | 333 | goto out_err; |
1da177e4 | 334 | |
901bd08a BZ |
335 | /* Deal with unexpected ATA data phase. */ |
336 | if (((stat & ATA_DRQ) == 0) ^ (cmd->nleft == 0)) | |
0a1248c5 | 337 | goto out_err; |
901bd08a BZ |
338 | } |
339 | ||
0a1248c5 BZ |
340 | if (write && cmd->nleft == 0) |
341 | goto out_end; | |
1da177e4 LT |
342 | |
343 | /* Still data left to transfer. */ | |
901bd08a | 344 | ide_pio_datablock(drive, cmd, write); |
1da177e4 | 345 | |
901bd08a BZ |
346 | /* Are we done? Check status and finish transfer. */ |
347 | if (write == 0 && cmd->nleft == 0) { | |
348 | stat = wait_drive_not_busy(drive); | |
349 | if (!OK_STAT(stat, 0, BAD_STAT)) | |
0a1248c5 | 350 | goto out_err; |
1da177e4 | 351 | |
0a1248c5 BZ |
352 | goto out_end; |
353 | } | |
354 | out_wait: | |
1da177e4 | 355 | /* Still data left to transfer. */ |
901bd08a | 356 | ide_set_handler(drive, &task_pio_intr, WAIT_WORSTCASE, NULL); |
1da177e4 | 357 | return ide_started; |
0a1248c5 BZ |
358 | out_end: |
359 | ide_finish_cmd(drive, cmd, stat); | |
360 | return ide_stopped; | |
361 | out_err: | |
041cea10 BZ |
362 | ide_error_cmd(drive, cmd); |
363 | return ide_error(drive, __func__, stat); | |
1da177e4 LT |
364 | } |
365 | ||
adb1af98 BZ |
366 | static ide_startstop_t pre_task_out_intr(ide_drive_t *drive, |
367 | struct ide_cmd *cmd) | |
1da177e4 LT |
368 | { |
369 | ide_startstop_t startstop; | |
370 | ||
3a7d2484 | 371 | if (ide_wait_stat(&startstop, drive, ATA_DRQ, |
1da177e4 LT |
372 | drive->bad_wstat, WAIT_DRQ)) { |
373 | printk(KERN_ERR "%s: no DRQ after issuing %sWRITE%s\n", | |
c7db966b | 374 | drive->name, |
0dfb991c | 375 | (cmd->tf_flags & IDE_TFLAG_MULTI_PIO) ? "MULT" : "", |
97100fc8 | 376 | (drive->dev_flags & IDE_DFLAG_LBA48) ? "_EXT" : ""); |
1da177e4 LT |
377 | return startstop; |
378 | } | |
379 | ||
97100fc8 | 380 | if ((drive->dev_flags & IDE_DFLAG_UNMASK) == 0) |
1da177e4 LT |
381 | local_irq_disable(); |
382 | ||
901bd08a BZ |
383 | ide_set_handler(drive, &task_pio_intr, WAIT_WORSTCASE, NULL); |
384 | ||
adb1af98 | 385 | ide_pio_datablock(drive, cmd, 1); |
1da177e4 LT |
386 | |
387 | return ide_started; | |
388 | } | |
1da177e4 | 389 | |
22aa4b32 BZ |
390 | int ide_raw_taskfile(ide_drive_t *drive, struct ide_cmd *cmd, u8 *buf, |
391 | u16 nsect) | |
1da177e4 | 392 | { |
154ed280 FT |
393 | struct request *rq; |
394 | int error; | |
1da177e4 | 395 | |
154ed280 FT |
396 | rq = blk_get_request(drive->queue, READ, __GFP_WAIT); |
397 | rq->cmd_type = REQ_TYPE_ATA_TASKFILE; | |
398 | rq->buffer = buf; | |
1da177e4 LT |
399 | |
400 | /* | |
401 | * (ks) We transfer currently only whole sectors. | |
402 | * This is suffient for now. But, it would be great, | |
403 | * if we would find a solution to transfer any size. | |
404 | * To support special commands like READ LONG. | |
405 | */ | |
154ed280 FT |
406 | rq->hard_nr_sectors = rq->nr_sectors = nsect; |
407 | rq->hard_cur_sectors = rq->current_nr_sectors = nsect; | |
1da177e4 | 408 | |
22aa4b32 | 409 | if (cmd->tf_flags & IDE_TFLAG_WRITE) |
154ed280 | 410 | rq->cmd_flags |= REQ_RW; |
1da177e4 | 411 | |
22aa4b32 BZ |
412 | rq->special = cmd; |
413 | cmd->rq = rq; | |
1da177e4 | 414 | |
154ed280 FT |
415 | error = blk_execute_rq(drive->queue, NULL, rq, 0); |
416 | blk_put_request(rq); | |
417 | ||
418 | return error; | |
1da177e4 LT |
419 | } |
420 | ||
1da177e4 LT |
421 | EXPORT_SYMBOL(ide_raw_taskfile); |
422 | ||
22aa4b32 | 423 | int ide_no_data_taskfile(ide_drive_t *drive, struct ide_cmd *cmd) |
9a3c49be | 424 | { |
0dfb991c | 425 | cmd->protocol = ATA_PROT_NODATA; |
9a3c49be | 426 | |
22aa4b32 | 427 | return ide_raw_taskfile(drive, cmd, NULL, 0); |
9a3c49be BZ |
428 | } |
429 | EXPORT_SYMBOL_GPL(ide_no_data_taskfile); | |
430 | ||
26a5b040 | 431 | #ifdef CONFIG_IDE_TASK_IOCTL |
22aa4b32 | 432 | int ide_taskfile_ioctl(ide_drive_t *drive, unsigned long arg) |
1da177e4 LT |
433 | { |
434 | ide_task_request_t *req_task; | |
22aa4b32 | 435 | struct ide_cmd cmd; |
1da177e4 LT |
436 | u8 *outbuf = NULL; |
437 | u8 *inbuf = NULL; | |
ac026ff2 | 438 | u8 *data_buf = NULL; |
1da177e4 LT |
439 | int err = 0; |
440 | int tasksize = sizeof(struct ide_task_request_s); | |
3a42bb22 AC |
441 | unsigned int taskin = 0; |
442 | unsigned int taskout = 0; | |
ac026ff2 | 443 | u16 nsect = 0; |
1da177e4 LT |
444 | char __user *buf = (char __user *)arg; |
445 | ||
446 | // printk("IDE Taskfile ...\n"); | |
447 | ||
f5e3c2fa | 448 | req_task = kzalloc(tasksize, GFP_KERNEL); |
1da177e4 | 449 | if (req_task == NULL) return -ENOMEM; |
1da177e4 LT |
450 | if (copy_from_user(req_task, buf, tasksize)) { |
451 | kfree(req_task); | |
452 | return -EFAULT; | |
453 | } | |
454 | ||
3a42bb22 AC |
455 | taskout = req_task->out_size; |
456 | taskin = req_task->in_size; | |
457 | ||
458 | if (taskin > 65536 || taskout > 65536) { | |
459 | err = -EINVAL; | |
460 | goto abort; | |
461 | } | |
1da177e4 LT |
462 | |
463 | if (taskout) { | |
464 | int outtotal = tasksize; | |
f5e3c2fa | 465 | outbuf = kzalloc(taskout, GFP_KERNEL); |
1da177e4 LT |
466 | if (outbuf == NULL) { |
467 | err = -ENOMEM; | |
468 | goto abort; | |
469 | } | |
1da177e4 LT |
470 | if (copy_from_user(outbuf, buf + outtotal, taskout)) { |
471 | err = -EFAULT; | |
472 | goto abort; | |
473 | } | |
474 | } | |
475 | ||
476 | if (taskin) { | |
477 | int intotal = tasksize + taskout; | |
f5e3c2fa | 478 | inbuf = kzalloc(taskin, GFP_KERNEL); |
1da177e4 LT |
479 | if (inbuf == NULL) { |
480 | err = -ENOMEM; | |
481 | goto abort; | |
482 | } | |
1da177e4 LT |
483 | if (copy_from_user(inbuf, buf + intotal, taskin)) { |
484 | err = -EFAULT; | |
485 | goto abort; | |
486 | } | |
487 | } | |
488 | ||
22aa4b32 | 489 | memset(&cmd, 0, sizeof(cmd)); |
1da177e4 | 490 | |
22aa4b32 BZ |
491 | memcpy(&cmd.tf_array[0], req_task->hob_ports, |
492 | HDIO_DRIVE_HOB_HDR_SIZE - 2); | |
493 | memcpy(&cmd.tf_array[6], req_task->io_ports, | |
494 | HDIO_DRIVE_TASK_HDR_SIZE); | |
866e2ec9 | 495 | |
22aa4b32 BZ |
496 | cmd.tf_flags = IDE_TFLAG_IO_16BIT | IDE_TFLAG_DEVICE | |
497 | IDE_TFLAG_IN_TF; | |
1da177e4 | 498 | |
97100fc8 | 499 | if (drive->dev_flags & IDE_DFLAG_LBA48) |
22aa4b32 | 500 | cmd.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_IN_HOB); |
a3bbb9d8 | 501 | |
74095a91 | 502 | if (req_task->out_flags.all) { |
22aa4b32 | 503 | cmd.ftf_flags |= IDE_FTFLAG_FLAGGED; |
74095a91 BZ |
504 | |
505 | if (req_task->out_flags.b.data) | |
22aa4b32 | 506 | cmd.ftf_flags |= IDE_FTFLAG_OUT_DATA; |
74095a91 BZ |
507 | |
508 | if (req_task->out_flags.b.nsector_hob) | |
22aa4b32 | 509 | cmd.tf_flags |= IDE_TFLAG_OUT_HOB_NSECT; |
74095a91 | 510 | if (req_task->out_flags.b.sector_hob) |
22aa4b32 | 511 | cmd.tf_flags |= IDE_TFLAG_OUT_HOB_LBAL; |
74095a91 | 512 | if (req_task->out_flags.b.lcyl_hob) |
22aa4b32 | 513 | cmd.tf_flags |= IDE_TFLAG_OUT_HOB_LBAM; |
74095a91 | 514 | if (req_task->out_flags.b.hcyl_hob) |
22aa4b32 | 515 | cmd.tf_flags |= IDE_TFLAG_OUT_HOB_LBAH; |
74095a91 BZ |
516 | |
517 | if (req_task->out_flags.b.error_feature) | |
22aa4b32 | 518 | cmd.tf_flags |= IDE_TFLAG_OUT_FEATURE; |
74095a91 | 519 | if (req_task->out_flags.b.nsector) |
22aa4b32 | 520 | cmd.tf_flags |= IDE_TFLAG_OUT_NSECT; |
74095a91 | 521 | if (req_task->out_flags.b.sector) |
22aa4b32 | 522 | cmd.tf_flags |= IDE_TFLAG_OUT_LBAL; |
74095a91 | 523 | if (req_task->out_flags.b.lcyl) |
22aa4b32 | 524 | cmd.tf_flags |= IDE_TFLAG_OUT_LBAM; |
74095a91 | 525 | if (req_task->out_flags.b.hcyl) |
22aa4b32 | 526 | cmd.tf_flags |= IDE_TFLAG_OUT_LBAH; |
a3bbb9d8 | 527 | } else { |
22aa4b32 BZ |
528 | cmd.tf_flags |= IDE_TFLAG_OUT_TF; |
529 | if (cmd.tf_flags & IDE_TFLAG_LBA48) | |
530 | cmd.tf_flags |= IDE_TFLAG_OUT_HOB; | |
74095a91 BZ |
531 | } |
532 | ||
866e2ec9 | 533 | if (req_task->in_flags.b.data) |
22aa4b32 | 534 | cmd.ftf_flags |= IDE_FTFLAG_IN_DATA; |
866e2ec9 | 535 | |
04d09b0e BZ |
536 | if (req_task->req_cmd == IDE_DRIVE_TASK_RAW_WRITE) { |
537 | /* fixup data phase if needed */ | |
538 | if (req_task->data_phase == TASKFILE_IN_DMAQ || | |
539 | req_task->data_phase == TASKFILE_IN_DMA) | |
0dfb991c | 540 | cmd.tf_flags |= IDE_TFLAG_WRITE; |
04d09b0e BZ |
541 | } |
542 | ||
0dfb991c BZ |
543 | cmd.protocol = ATA_PROT_DMA; |
544 | ||
545 | switch (req_task->data_phase) { | |
1da177e4 LT |
546 | case TASKFILE_MULTI_OUT: |
547 | if (!drive->mult_count) { | |
548 | /* (hs): give up if multcount is not set */ | |
549 | printk(KERN_ERR "%s: %s Multimode Write " \ | |
550 | "multcount is not set\n", | |
eb63963a | 551 | drive->name, __func__); |
1da177e4 LT |
552 | err = -EPERM; |
553 | goto abort; | |
554 | } | |
0dfb991c | 555 | cmd.tf_flags |= IDE_TFLAG_MULTI_PIO; |
1da177e4 LT |
556 | /* fall through */ |
557 | case TASKFILE_OUT: | |
0dfb991c | 558 | cmd.protocol = ATA_PROT_PIO; |
ac026ff2 BZ |
559 | /* fall through */ |
560 | case TASKFILE_OUT_DMAQ: | |
561 | case TASKFILE_OUT_DMA: | |
04d09b0e | 562 | cmd.tf_flags |= IDE_TFLAG_WRITE; |
ac026ff2 BZ |
563 | nsect = taskout / SECTOR_SIZE; |
564 | data_buf = outbuf; | |
1da177e4 LT |
565 | break; |
566 | case TASKFILE_MULTI_IN: | |
567 | if (!drive->mult_count) { | |
568 | /* (hs): give up if multcount is not set */ | |
569 | printk(KERN_ERR "%s: %s Multimode Read failure " \ | |
570 | "multcount is not set\n", | |
eb63963a | 571 | drive->name, __func__); |
1da177e4 LT |
572 | err = -EPERM; |
573 | goto abort; | |
574 | } | |
0dfb991c | 575 | cmd.tf_flags |= IDE_TFLAG_MULTI_PIO; |
1da177e4 LT |
576 | /* fall through */ |
577 | case TASKFILE_IN: | |
0dfb991c | 578 | cmd.protocol = ATA_PROT_PIO; |
ac026ff2 BZ |
579 | /* fall through */ |
580 | case TASKFILE_IN_DMAQ: | |
581 | case TASKFILE_IN_DMA: | |
582 | nsect = taskin / SECTOR_SIZE; | |
583 | data_buf = inbuf; | |
1da177e4 LT |
584 | break; |
585 | case TASKFILE_NO_DATA: | |
0dfb991c | 586 | cmd.protocol = ATA_PROT_NODATA; |
1da177e4 LT |
587 | break; |
588 | default: | |
589 | err = -EFAULT; | |
590 | goto abort; | |
591 | } | |
592 | ||
ac026ff2 BZ |
593 | if (req_task->req_cmd == IDE_DRIVE_TASK_NO_DATA) |
594 | nsect = 0; | |
595 | else if (!nsect) { | |
22aa4b32 | 596 | nsect = (cmd.tf.hob_nsect << 8) | cmd.tf.nsect; |
ac026ff2 BZ |
597 | |
598 | if (!nsect) { | |
599 | printk(KERN_ERR "%s: in/out command without data\n", | |
600 | drive->name); | |
601 | err = -EFAULT; | |
602 | goto abort; | |
603 | } | |
604 | } | |
605 | ||
22aa4b32 | 606 | err = ide_raw_taskfile(drive, &cmd, data_buf, nsect); |
ac026ff2 | 607 | |
22aa4b32 BZ |
608 | memcpy(req_task->hob_ports, &cmd.tf_array[0], |
609 | HDIO_DRIVE_HOB_HDR_SIZE - 2); | |
610 | memcpy(req_task->io_ports, &cmd.tf_array[6], | |
611 | HDIO_DRIVE_TASK_HDR_SIZE); | |
866e2ec9 | 612 | |
22aa4b32 | 613 | if ((cmd.ftf_flags & IDE_FTFLAG_SET_IN_FLAGS) && |
866e2ec9 BZ |
614 | req_task->in_flags.all == 0) { |
615 | req_task->in_flags.all = IDE_TASKFILE_STD_IN_FLAGS; | |
97100fc8 | 616 | if (drive->dev_flags & IDE_DFLAG_LBA48) |
866e2ec9 BZ |
617 | req_task->in_flags.all |= (IDE_HOB_STD_IN_FLAGS << 8); |
618 | } | |
1da177e4 LT |
619 | |
620 | if (copy_to_user(buf, req_task, tasksize)) { | |
621 | err = -EFAULT; | |
622 | goto abort; | |
623 | } | |
624 | if (taskout) { | |
625 | int outtotal = tasksize; | |
626 | if (copy_to_user(buf + outtotal, outbuf, taskout)) { | |
627 | err = -EFAULT; | |
628 | goto abort; | |
629 | } | |
630 | } | |
631 | if (taskin) { | |
632 | int intotal = tasksize + taskout; | |
633 | if (copy_to_user(buf + intotal, inbuf, taskin)) { | |
634 | err = -EFAULT; | |
635 | goto abort; | |
636 | } | |
637 | } | |
638 | abort: | |
639 | kfree(req_task); | |
6044ec88 JJ |
640 | kfree(outbuf); |
641 | kfree(inbuf); | |
1da177e4 LT |
642 | |
643 | // printk("IDE Taskfile ioctl ended. rc = %i\n", err); | |
644 | ||
1da177e4 LT |
645 | return err; |
646 | } | |
26a5b040 | 647 | #endif |