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; |
b788ee9c | 103 | case ATA_PROT_DMA: |
97100fc8 | 104 | if ((drive->dev_flags & IDE_DFLAG_USING_DMA) == 0 || |
22981694 BZ |
105 | ide_build_sglist(drive, cmd) == 0 || |
106 | dma_ops->dma_setup(drive, cmd)) | |
10d90157 | 107 | return ide_stopped; |
5e37bdc0 BZ |
108 | dma_ops->dma_exec_cmd(drive, tf->command); |
109 | dma_ops->dma_start(drive); | |
b788ee9c | 110 | default: |
74095a91 | 111 | return ide_started; |
1da177e4 | 112 | } |
1da177e4 | 113 | } |
f6e29e35 | 114 | EXPORT_SYMBOL_GPL(do_rw_taskfile); |
1da177e4 | 115 | |
d6ff9f64 | 116 | static ide_startstop_t task_no_data_intr(ide_drive_t *drive) |
1da177e4 | 117 | { |
b73c7ee2 | 118 | ide_hwif_t *hwif = drive->hwif; |
22aa4b32 BZ |
119 | struct ide_cmd *cmd = &hwif->cmd; |
120 | struct ide_taskfile *tf = &cmd->tf; | |
121 | int custom = (cmd->tf_flags & IDE_TFLAG_CUSTOM_HANDLER) ? 1 : 0; | |
d6ff9f64 | 122 | int retries = (custom && tf->command == ATA_CMD_INIT_DEV_PARAMS) ? 5 : 1; |
1da177e4 LT |
123 | u8 stat; |
124 | ||
90d2c6bc BZ |
125 | local_irq_enable_in_hardirq(); |
126 | ||
374e042c BZ |
127 | while (1) { |
128 | stat = hwif->tp_ops->read_status(hwif); | |
3a7d2484 | 129 | if ((stat & ATA_BUSY) == 0 || retries-- == 0) |
374e042c | 130 | break; |
1da177e4 | 131 | udelay(10); |
374e042c | 132 | }; |
1da177e4 | 133 | |
d6ff9f64 BZ |
134 | if (!OK_STAT(stat, ATA_DRDY, BAD_STAT)) { |
135 | if (custom && tf->command == ATA_CMD_SET_MULTI) { | |
136 | drive->mult_req = drive->mult_count = 0; | |
137 | drive->special.b.recalibrate = 1; | |
138 | (void)ide_dump_status(drive, __func__, stat); | |
139 | return ide_stopped; | |
140 | } else if (custom && tf->command == ATA_CMD_INIT_DEV_PARAMS) { | |
141 | if ((stat & (ATA_ERR | ATA_DRQ)) == 0) { | |
142 | ide_set_handler(drive, &task_no_data_intr, | |
143 | WAIT_WORSTCASE, NULL); | |
144 | return ide_started; | |
145 | } | |
146 | } | |
1da177e4 | 147 | return ide_error(drive, "task_no_data_intr", stat); |
d6ff9f64 | 148 | } |
c47137a9 | 149 | |
e7fedc3c | 150 | if (custom && tf->command == ATA_CMD_SET_MULTI) |
d6ff9f64 | 151 | drive->mult_count = drive->mult_req; |
1da177e4 | 152 | |
d364c7f5 BZ |
153 | if (custom == 0 || tf->command == ATA_CMD_IDLEIMMEDIATE || |
154 | tf->command == ATA_CMD_CHK_POWER) { | |
a09485df | 155 | struct request *rq = hwif->rq; |
a09485df BZ |
156 | |
157 | if (blk_pm_request(rq)) | |
158 | ide_complete_pm_rq(drive, rq); | |
2230d90d BZ |
159 | else |
160 | ide_finish_cmd(drive, cmd, stat); | |
a09485df BZ |
161 | } |
162 | ||
1da177e4 LT |
163 | return ide_stopped; |
164 | } | |
165 | ||
da6f4c7f | 166 | static u8 wait_drive_not_busy(ide_drive_t *drive) |
1da177e4 | 167 | { |
b73c7ee2 | 168 | ide_hwif_t *hwif = drive->hwif; |
b42fa133 | 169 | int retries; |
1da177e4 LT |
170 | u8 stat; |
171 | ||
172 | /* | |
f54feafa BZ |
173 | * Last sector was transfered, wait until device is ready. This can |
174 | * take up to 6 ms on some ATAPI devices, so we will wait max 10 ms. | |
1da177e4 | 175 | */ |
f54feafa | 176 | for (retries = 0; retries < 1000; retries++) { |
374e042c | 177 | stat = hwif->tp_ops->read_status(hwif); |
c47137a9 | 178 | |
3a7d2484 | 179 | if (stat & ATA_BUSY) |
b42fa133 MY |
180 | udelay(10); |
181 | else | |
182 | break; | |
183 | } | |
1da177e4 | 184 | |
3a7d2484 | 185 | if (stat & ATA_BUSY) |
1da177e4 LT |
186 | printk(KERN_ERR "%s: drive still BUSY!\n", drive->name); |
187 | ||
188 | return stat; | |
189 | } | |
190 | ||
adb1af98 | 191 | static void ide_pio_sector(ide_drive_t *drive, struct ide_cmd *cmd, |
92d3ab27 | 192 | unsigned int write) |
1da177e4 LT |
193 | { |
194 | ide_hwif_t *hwif = drive->hwif; | |
195 | struct scatterlist *sg = hwif->sg_table; | |
b6308ee0 | 196 | struct scatterlist *cursg = cmd->cursg; |
1da177e4 LT |
197 | struct page *page; |
198 | #ifdef CONFIG_HIGHMEM | |
199 | unsigned long flags; | |
200 | #endif | |
201 | unsigned int offset; | |
202 | u8 *buf; | |
203 | ||
b6308ee0 | 204 | cursg = cmd->cursg; |
55c16a70 JA |
205 | if (!cursg) { |
206 | cursg = sg; | |
b6308ee0 | 207 | cmd->cursg = sg; |
55c16a70 JA |
208 | } |
209 | ||
45711f1a | 210 | page = sg_page(cursg); |
b6308ee0 | 211 | offset = cursg->offset + cmd->cursg_ofs * SECTOR_SIZE; |
1da177e4 LT |
212 | |
213 | /* get the current page and offset */ | |
214 | page = nth_page(page, (offset >> PAGE_SHIFT)); | |
215 | offset %= PAGE_SIZE; | |
216 | ||
217 | #ifdef CONFIG_HIGHMEM | |
218 | local_irq_save(flags); | |
219 | #endif | |
220 | buf = kmap_atomic(page, KM_BIO_SRC_IRQ) + offset; | |
221 | ||
b6308ee0 BZ |
222 | cmd->nleft--; |
223 | cmd->cursg_ofs++; | |
1da177e4 | 224 | |
b6308ee0 BZ |
225 | if ((cmd->cursg_ofs * SECTOR_SIZE) == cursg->length) { |
226 | cmd->cursg = sg_next(cmd->cursg); | |
227 | cmd->cursg_ofs = 0; | |
1da177e4 LT |
228 | } |
229 | ||
230 | /* do the actual data transfer */ | |
231 | if (write) | |
adb1af98 | 232 | hwif->tp_ops->output_data(drive, cmd, buf, SECTOR_SIZE); |
1da177e4 | 233 | else |
adb1af98 | 234 | hwif->tp_ops->input_data(drive, cmd, buf, SECTOR_SIZE); |
1da177e4 LT |
235 | |
236 | kunmap_atomic(buf, KM_BIO_SRC_IRQ); | |
237 | #ifdef CONFIG_HIGHMEM | |
238 | local_irq_restore(flags); | |
239 | #endif | |
240 | } | |
241 | ||
adb1af98 | 242 | static void ide_pio_multi(ide_drive_t *drive, struct ide_cmd *cmd, |
92d3ab27 | 243 | unsigned int write) |
1da177e4 LT |
244 | { |
245 | unsigned int nsect; | |
246 | ||
b6308ee0 | 247 | nsect = min_t(unsigned int, cmd->nleft, drive->mult_count); |
1da177e4 | 248 | while (nsect--) |
adb1af98 | 249 | ide_pio_sector(drive, cmd, write); |
1da177e4 LT |
250 | } |
251 | ||
adb1af98 BZ |
252 | static void ide_pio_datablock(ide_drive_t *drive, struct ide_cmd *cmd, |
253 | unsigned int write) | |
1da177e4 | 254 | { |
35cf2b94 TH |
255 | u8 saved_io_32bit = drive->io_32bit; |
256 | ||
adb1af98 BZ |
257 | if (cmd->tf_flags & IDE_TFLAG_FS) |
258 | cmd->rq->errors = 0; | |
1da177e4 | 259 | |
22aa4b32 | 260 | if (cmd->tf_flags & IDE_TFLAG_IO_16BIT) |
e3d9a73a | 261 | drive->io_32bit = 0; |
35cf2b94 | 262 | |
651c29a1 AM |
263 | touch_softlockup_watchdog(); |
264 | ||
0dfb991c | 265 | if (cmd->tf_flags & IDE_TFLAG_MULTI_PIO) |
adb1af98 | 266 | ide_pio_multi(drive, cmd, write); |
0dfb991c | 267 | else |
adb1af98 | 268 | ide_pio_sector(drive, cmd, write); |
35cf2b94 TH |
269 | |
270 | drive->io_32bit = saved_io_32bit; | |
1da177e4 LT |
271 | } |
272 | ||
041cea10 | 273 | static void ide_error_cmd(ide_drive_t *drive, struct ide_cmd *cmd) |
1da177e4 | 274 | { |
adb1af98 | 275 | if (cmd->tf_flags & IDE_TFLAG_FS) { |
b6308ee0 | 276 | int sectors = cmd->nsect - cmd->nleft; |
1da177e4 | 277 | |
0dfb991c BZ |
278 | if (cmd->protocol == ATA_PROT_PIO && |
279 | ((cmd->tf_flags & IDE_TFLAG_WRITE) || cmd->nleft == 0)) { | |
280 | if (cmd->tf_flags & IDE_TFLAG_MULTI_PIO) | |
281 | sectors -= drive->mult_count; | |
282 | else | |
283 | sectors--; | |
1da177e4 LT |
284 | } |
285 | ||
c152cc1a | 286 | if (sectors > 0) |
130e8867 | 287 | ide_complete_rq(drive, 0, sectors << 9); |
1da177e4 | 288 | } |
1da177e4 LT |
289 | } |
290 | ||
adb1af98 | 291 | void ide_finish_cmd(ide_drive_t *drive, struct ide_cmd *cmd, u8 stat) |
1da177e4 | 292 | { |
6902a533 | 293 | struct request *rq = drive->hwif->rq; |
2230d90d | 294 | u8 err = ide_read_error(drive); |
1da177e4 | 295 | |
2230d90d | 296 | ide_complete_cmd(drive, cmd, stat, err); |
6902a533 | 297 | rq->errors = err; |
f974b196 | 298 | ide_complete_rq(drive, err ? -EIO : 0, blk_rq_bytes(rq)); |
1da177e4 LT |
299 | } |
300 | ||
301 | /* | |
901bd08a | 302 | * Handler for command with PIO data phase. |
1da177e4 | 303 | */ |
901bd08a | 304 | static ide_startstop_t task_pio_intr(ide_drive_t *drive) |
1da177e4 LT |
305 | { |
306 | ide_hwif_t *hwif = drive->hwif; | |
adb1af98 | 307 | struct ide_cmd *cmd = &drive->hwif->cmd; |
374e042c | 308 | u8 stat = hwif->tp_ops->read_status(hwif); |
901bd08a | 309 | u8 write = !!(cmd->tf_flags & IDE_TFLAG_WRITE); |
1da177e4 | 310 | |
901bd08a BZ |
311 | if (write == 0) { |
312 | /* Error? */ | |
313 | if (stat & ATA_ERR) | |
0a1248c5 | 314 | goto out_err; |
1da177e4 | 315 | |
901bd08a | 316 | /* Didn't want any data? Odd. */ |
151055ed BZ |
317 | if ((stat & ATA_DRQ) == 0) { |
318 | /* Command all done? */ | |
0a1248c5 BZ |
319 | if (OK_STAT(stat, ATA_DRDY, ATA_BUSY)) |
320 | goto out_end; | |
151055ed BZ |
321 | |
322 | /* Assume it was a spurious irq */ | |
0a1248c5 | 323 | goto out_wait; |
151055ed | 324 | } |
901bd08a BZ |
325 | } else { |
326 | if (!OK_STAT(stat, DRIVE_READY, drive->bad_wstat)) | |
0a1248c5 | 327 | goto out_err; |
1da177e4 | 328 | |
901bd08a BZ |
329 | /* Deal with unexpected ATA data phase. */ |
330 | if (((stat & ATA_DRQ) == 0) ^ (cmd->nleft == 0)) | |
0a1248c5 | 331 | goto out_err; |
901bd08a BZ |
332 | } |
333 | ||
0a1248c5 BZ |
334 | if (write && cmd->nleft == 0) |
335 | goto out_end; | |
1da177e4 LT |
336 | |
337 | /* Still data left to transfer. */ | |
901bd08a | 338 | ide_pio_datablock(drive, cmd, write); |
1da177e4 | 339 | |
901bd08a BZ |
340 | /* Are we done? Check status and finish transfer. */ |
341 | if (write == 0 && cmd->nleft == 0) { | |
342 | stat = wait_drive_not_busy(drive); | |
343 | if (!OK_STAT(stat, 0, BAD_STAT)) | |
0a1248c5 | 344 | goto out_err; |
1da177e4 | 345 | |
0a1248c5 BZ |
346 | goto out_end; |
347 | } | |
348 | out_wait: | |
1da177e4 | 349 | /* Still data left to transfer. */ |
901bd08a | 350 | ide_set_handler(drive, &task_pio_intr, WAIT_WORSTCASE, NULL); |
1da177e4 | 351 | return ide_started; |
0a1248c5 | 352 | out_end: |
2230d90d BZ |
353 | if ((cmd->tf_flags & IDE_TFLAG_FS) == 0) |
354 | ide_finish_cmd(drive, cmd, stat); | |
355 | else | |
130e8867 | 356 | ide_complete_rq(drive, 0, cmd->rq->nr_sectors << 9); |
0a1248c5 BZ |
357 | return ide_stopped; |
358 | out_err: | |
041cea10 BZ |
359 | ide_error_cmd(drive, cmd); |
360 | return ide_error(drive, __func__, stat); | |
1da177e4 LT |
361 | } |
362 | ||
adb1af98 BZ |
363 | static ide_startstop_t pre_task_out_intr(ide_drive_t *drive, |
364 | struct ide_cmd *cmd) | |
1da177e4 LT |
365 | { |
366 | ide_startstop_t startstop; | |
367 | ||
3a7d2484 | 368 | if (ide_wait_stat(&startstop, drive, ATA_DRQ, |
1da177e4 LT |
369 | drive->bad_wstat, WAIT_DRQ)) { |
370 | printk(KERN_ERR "%s: no DRQ after issuing %sWRITE%s\n", | |
c7db966b | 371 | drive->name, |
0dfb991c | 372 | (cmd->tf_flags & IDE_TFLAG_MULTI_PIO) ? "MULT" : "", |
97100fc8 | 373 | (drive->dev_flags & IDE_DFLAG_LBA48) ? "_EXT" : ""); |
1da177e4 LT |
374 | return startstop; |
375 | } | |
376 | ||
97100fc8 | 377 | if ((drive->dev_flags & IDE_DFLAG_UNMASK) == 0) |
1da177e4 LT |
378 | local_irq_disable(); |
379 | ||
901bd08a BZ |
380 | ide_set_handler(drive, &task_pio_intr, WAIT_WORSTCASE, NULL); |
381 | ||
adb1af98 | 382 | ide_pio_datablock(drive, cmd, 1); |
1da177e4 LT |
383 | |
384 | return ide_started; | |
385 | } | |
1da177e4 | 386 | |
22aa4b32 BZ |
387 | int ide_raw_taskfile(ide_drive_t *drive, struct ide_cmd *cmd, u8 *buf, |
388 | u16 nsect) | |
1da177e4 | 389 | { |
154ed280 FT |
390 | struct request *rq; |
391 | int error; | |
1da177e4 | 392 | |
154ed280 FT |
393 | rq = blk_get_request(drive->queue, READ, __GFP_WAIT); |
394 | rq->cmd_type = REQ_TYPE_ATA_TASKFILE; | |
395 | rq->buffer = buf; | |
1da177e4 LT |
396 | |
397 | /* | |
398 | * (ks) We transfer currently only whole sectors. | |
399 | * This is suffient for now. But, it would be great, | |
400 | * if we would find a solution to transfer any size. | |
401 | * To support special commands like READ LONG. | |
402 | */ | |
154ed280 FT |
403 | rq->hard_nr_sectors = rq->nr_sectors = nsect; |
404 | rq->hard_cur_sectors = rq->current_nr_sectors = nsect; | |
1da177e4 | 405 | |
22aa4b32 | 406 | if (cmd->tf_flags & IDE_TFLAG_WRITE) |
154ed280 | 407 | rq->cmd_flags |= REQ_RW; |
1da177e4 | 408 | |
22aa4b32 BZ |
409 | rq->special = cmd; |
410 | cmd->rq = rq; | |
1da177e4 | 411 | |
154ed280 FT |
412 | error = blk_execute_rq(drive->queue, NULL, rq, 0); |
413 | blk_put_request(rq); | |
414 | ||
415 | return error; | |
1da177e4 LT |
416 | } |
417 | ||
1da177e4 LT |
418 | EXPORT_SYMBOL(ide_raw_taskfile); |
419 | ||
22aa4b32 | 420 | int ide_no_data_taskfile(ide_drive_t *drive, struct ide_cmd *cmd) |
9a3c49be | 421 | { |
0dfb991c | 422 | cmd->protocol = ATA_PROT_NODATA; |
9a3c49be | 423 | |
22aa4b32 | 424 | return ide_raw_taskfile(drive, cmd, NULL, 0); |
9a3c49be BZ |
425 | } |
426 | EXPORT_SYMBOL_GPL(ide_no_data_taskfile); | |
427 | ||
26a5b040 | 428 | #ifdef CONFIG_IDE_TASK_IOCTL |
22aa4b32 | 429 | int ide_taskfile_ioctl(ide_drive_t *drive, unsigned long arg) |
1da177e4 LT |
430 | { |
431 | ide_task_request_t *req_task; | |
22aa4b32 | 432 | struct ide_cmd cmd; |
1da177e4 LT |
433 | u8 *outbuf = NULL; |
434 | u8 *inbuf = NULL; | |
ac026ff2 | 435 | u8 *data_buf = NULL; |
1da177e4 LT |
436 | int err = 0; |
437 | int tasksize = sizeof(struct ide_task_request_s); | |
3a42bb22 AC |
438 | unsigned int taskin = 0; |
439 | unsigned int taskout = 0; | |
ac026ff2 | 440 | u16 nsect = 0; |
1da177e4 LT |
441 | char __user *buf = (char __user *)arg; |
442 | ||
443 | // printk("IDE Taskfile ...\n"); | |
444 | ||
f5e3c2fa | 445 | req_task = kzalloc(tasksize, GFP_KERNEL); |
1da177e4 | 446 | if (req_task == NULL) return -ENOMEM; |
1da177e4 LT |
447 | if (copy_from_user(req_task, buf, tasksize)) { |
448 | kfree(req_task); | |
449 | return -EFAULT; | |
450 | } | |
451 | ||
3a42bb22 AC |
452 | taskout = req_task->out_size; |
453 | taskin = req_task->in_size; | |
454 | ||
455 | if (taskin > 65536 || taskout > 65536) { | |
456 | err = -EINVAL; | |
457 | goto abort; | |
458 | } | |
1da177e4 LT |
459 | |
460 | if (taskout) { | |
461 | int outtotal = tasksize; | |
f5e3c2fa | 462 | outbuf = kzalloc(taskout, GFP_KERNEL); |
1da177e4 LT |
463 | if (outbuf == NULL) { |
464 | err = -ENOMEM; | |
465 | goto abort; | |
466 | } | |
1da177e4 LT |
467 | if (copy_from_user(outbuf, buf + outtotal, taskout)) { |
468 | err = -EFAULT; | |
469 | goto abort; | |
470 | } | |
471 | } | |
472 | ||
473 | if (taskin) { | |
474 | int intotal = tasksize + taskout; | |
f5e3c2fa | 475 | inbuf = kzalloc(taskin, GFP_KERNEL); |
1da177e4 LT |
476 | if (inbuf == NULL) { |
477 | err = -ENOMEM; | |
478 | goto abort; | |
479 | } | |
1da177e4 LT |
480 | if (copy_from_user(inbuf, buf + intotal, taskin)) { |
481 | err = -EFAULT; | |
482 | goto abort; | |
483 | } | |
484 | } | |
485 | ||
22aa4b32 | 486 | memset(&cmd, 0, sizeof(cmd)); |
1da177e4 | 487 | |
22aa4b32 BZ |
488 | memcpy(&cmd.tf_array[0], req_task->hob_ports, |
489 | HDIO_DRIVE_HOB_HDR_SIZE - 2); | |
490 | memcpy(&cmd.tf_array[6], req_task->io_ports, | |
491 | HDIO_DRIVE_TASK_HDR_SIZE); | |
866e2ec9 | 492 | |
22aa4b32 BZ |
493 | cmd.tf_flags = IDE_TFLAG_IO_16BIT | IDE_TFLAG_DEVICE | |
494 | IDE_TFLAG_IN_TF; | |
1da177e4 | 495 | |
97100fc8 | 496 | if (drive->dev_flags & IDE_DFLAG_LBA48) |
22aa4b32 | 497 | cmd.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_IN_HOB); |
a3bbb9d8 | 498 | |
74095a91 | 499 | if (req_task->out_flags.all) { |
22aa4b32 | 500 | cmd.ftf_flags |= IDE_FTFLAG_FLAGGED; |
74095a91 BZ |
501 | |
502 | if (req_task->out_flags.b.data) | |
22aa4b32 | 503 | cmd.ftf_flags |= IDE_FTFLAG_OUT_DATA; |
74095a91 BZ |
504 | |
505 | if (req_task->out_flags.b.nsector_hob) | |
22aa4b32 | 506 | cmd.tf_flags |= IDE_TFLAG_OUT_HOB_NSECT; |
74095a91 | 507 | if (req_task->out_flags.b.sector_hob) |
22aa4b32 | 508 | cmd.tf_flags |= IDE_TFLAG_OUT_HOB_LBAL; |
74095a91 | 509 | if (req_task->out_flags.b.lcyl_hob) |
22aa4b32 | 510 | cmd.tf_flags |= IDE_TFLAG_OUT_HOB_LBAM; |
74095a91 | 511 | if (req_task->out_flags.b.hcyl_hob) |
22aa4b32 | 512 | cmd.tf_flags |= IDE_TFLAG_OUT_HOB_LBAH; |
74095a91 BZ |
513 | |
514 | if (req_task->out_flags.b.error_feature) | |
22aa4b32 | 515 | cmd.tf_flags |= IDE_TFLAG_OUT_FEATURE; |
74095a91 | 516 | if (req_task->out_flags.b.nsector) |
22aa4b32 | 517 | cmd.tf_flags |= IDE_TFLAG_OUT_NSECT; |
74095a91 | 518 | if (req_task->out_flags.b.sector) |
22aa4b32 | 519 | cmd.tf_flags |= IDE_TFLAG_OUT_LBAL; |
74095a91 | 520 | if (req_task->out_flags.b.lcyl) |
22aa4b32 | 521 | cmd.tf_flags |= IDE_TFLAG_OUT_LBAM; |
74095a91 | 522 | if (req_task->out_flags.b.hcyl) |
22aa4b32 | 523 | cmd.tf_flags |= IDE_TFLAG_OUT_LBAH; |
a3bbb9d8 | 524 | } else { |
22aa4b32 BZ |
525 | cmd.tf_flags |= IDE_TFLAG_OUT_TF; |
526 | if (cmd.tf_flags & IDE_TFLAG_LBA48) | |
527 | cmd.tf_flags |= IDE_TFLAG_OUT_HOB; | |
74095a91 BZ |
528 | } |
529 | ||
866e2ec9 | 530 | if (req_task->in_flags.b.data) |
22aa4b32 | 531 | cmd.ftf_flags |= IDE_FTFLAG_IN_DATA; |
866e2ec9 | 532 | |
04d09b0e BZ |
533 | if (req_task->req_cmd == IDE_DRIVE_TASK_RAW_WRITE) { |
534 | /* fixup data phase if needed */ | |
535 | if (req_task->data_phase == TASKFILE_IN_DMAQ || | |
536 | req_task->data_phase == TASKFILE_IN_DMA) | |
0dfb991c | 537 | cmd.tf_flags |= IDE_TFLAG_WRITE; |
04d09b0e BZ |
538 | } |
539 | ||
0dfb991c BZ |
540 | cmd.protocol = ATA_PROT_DMA; |
541 | ||
542 | switch (req_task->data_phase) { | |
1da177e4 LT |
543 | case TASKFILE_MULTI_OUT: |
544 | if (!drive->mult_count) { | |
545 | /* (hs): give up if multcount is not set */ | |
546 | printk(KERN_ERR "%s: %s Multimode Write " \ | |
547 | "multcount is not set\n", | |
eb63963a | 548 | drive->name, __func__); |
1da177e4 LT |
549 | err = -EPERM; |
550 | goto abort; | |
551 | } | |
0dfb991c | 552 | cmd.tf_flags |= IDE_TFLAG_MULTI_PIO; |
1da177e4 LT |
553 | /* fall through */ |
554 | case TASKFILE_OUT: | |
0dfb991c | 555 | cmd.protocol = ATA_PROT_PIO; |
ac026ff2 BZ |
556 | /* fall through */ |
557 | case TASKFILE_OUT_DMAQ: | |
558 | case TASKFILE_OUT_DMA: | |
04d09b0e | 559 | cmd.tf_flags |= IDE_TFLAG_WRITE; |
ac026ff2 BZ |
560 | nsect = taskout / SECTOR_SIZE; |
561 | data_buf = outbuf; | |
1da177e4 LT |
562 | break; |
563 | case TASKFILE_MULTI_IN: | |
564 | if (!drive->mult_count) { | |
565 | /* (hs): give up if multcount is not set */ | |
566 | printk(KERN_ERR "%s: %s Multimode Read failure " \ | |
567 | "multcount is not set\n", | |
eb63963a | 568 | drive->name, __func__); |
1da177e4 LT |
569 | err = -EPERM; |
570 | goto abort; | |
571 | } | |
0dfb991c | 572 | cmd.tf_flags |= IDE_TFLAG_MULTI_PIO; |
1da177e4 LT |
573 | /* fall through */ |
574 | case TASKFILE_IN: | |
0dfb991c | 575 | cmd.protocol = ATA_PROT_PIO; |
ac026ff2 BZ |
576 | /* fall through */ |
577 | case TASKFILE_IN_DMAQ: | |
578 | case TASKFILE_IN_DMA: | |
579 | nsect = taskin / SECTOR_SIZE; | |
580 | data_buf = inbuf; | |
1da177e4 LT |
581 | break; |
582 | case TASKFILE_NO_DATA: | |
0dfb991c | 583 | cmd.protocol = ATA_PROT_NODATA; |
1da177e4 LT |
584 | break; |
585 | default: | |
586 | err = -EFAULT; | |
587 | goto abort; | |
588 | } | |
589 | ||
ac026ff2 BZ |
590 | if (req_task->req_cmd == IDE_DRIVE_TASK_NO_DATA) |
591 | nsect = 0; | |
592 | else if (!nsect) { | |
22aa4b32 | 593 | nsect = (cmd.tf.hob_nsect << 8) | cmd.tf.nsect; |
ac026ff2 BZ |
594 | |
595 | if (!nsect) { | |
596 | printk(KERN_ERR "%s: in/out command without data\n", | |
597 | drive->name); | |
598 | err = -EFAULT; | |
599 | goto abort; | |
600 | } | |
601 | } | |
602 | ||
22aa4b32 | 603 | err = ide_raw_taskfile(drive, &cmd, data_buf, nsect); |
ac026ff2 | 604 | |
22aa4b32 BZ |
605 | memcpy(req_task->hob_ports, &cmd.tf_array[0], |
606 | HDIO_DRIVE_HOB_HDR_SIZE - 2); | |
607 | memcpy(req_task->io_ports, &cmd.tf_array[6], | |
608 | HDIO_DRIVE_TASK_HDR_SIZE); | |
866e2ec9 | 609 | |
22aa4b32 | 610 | if ((cmd.ftf_flags & IDE_FTFLAG_SET_IN_FLAGS) && |
866e2ec9 BZ |
611 | req_task->in_flags.all == 0) { |
612 | req_task->in_flags.all = IDE_TASKFILE_STD_IN_FLAGS; | |
97100fc8 | 613 | if (drive->dev_flags & IDE_DFLAG_LBA48) |
866e2ec9 BZ |
614 | req_task->in_flags.all |= (IDE_HOB_STD_IN_FLAGS << 8); |
615 | } | |
1da177e4 LT |
616 | |
617 | if (copy_to_user(buf, req_task, tasksize)) { | |
618 | err = -EFAULT; | |
619 | goto abort; | |
620 | } | |
621 | if (taskout) { | |
622 | int outtotal = tasksize; | |
623 | if (copy_to_user(buf + outtotal, outbuf, taskout)) { | |
624 | err = -EFAULT; | |
625 | goto abort; | |
626 | } | |
627 | } | |
628 | if (taskin) { | |
629 | int intotal = tasksize + taskout; | |
630 | if (copy_to_user(buf + intotal, inbuf, taskin)) { | |
631 | err = -EFAULT; | |
632 | goto abort; | |
633 | } | |
634 | } | |
635 | abort: | |
636 | kfree(req_task); | |
6044ec88 JJ |
637 | kfree(outbuf); |
638 | kfree(inbuf); | |
1da177e4 LT |
639 | |
640 | // printk("IDE Taskfile ioctl ended. rc = %i\n", err); | |
641 | ||
1da177e4 LT |
642 | return err; |
643 | } | |
26a5b040 | 644 | #endif |