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 | ||
3153c26b SS |
26 | void ide_tf_readback(ide_drive_t *drive, struct ide_cmd *cmd) |
27 | { | |
28 | ide_hwif_t *hwif = drive->hwif; | |
29 | const struct ide_tp_ops *tp_ops = hwif->tp_ops; | |
30 | ||
31 | /* Be sure we're looking at the low order bytes */ | |
32 | tp_ops->write_devctl(hwif, ATA_DEVCTL_OBS); | |
33 | ||
34 | tp_ops->tf_read(drive, &cmd->tf, cmd->valid.in.tf); | |
35 | ||
36 | if (cmd->tf_flags & IDE_TFLAG_LBA48) { | |
37 | tp_ops->write_devctl(hwif, ATA_HOB | ATA_DEVCTL_OBS); | |
38 | ||
39 | tp_ops->tf_read(drive, &cmd->hob, cmd->valid.in.hob); | |
40 | } | |
41 | } | |
42 | ||
745483f1 | 43 | void ide_tf_dump(const char *s, struct ide_cmd *cmd) |
9e42237f | 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", | |
745483f1 SS |
48 | s, cmd->tf.feature, cmd->tf.nsect, |
49 | cmd->tf.lbal, cmd->tf.lbam, cmd->tf.lbah, | |
50 | cmd->tf.device, cmd->tf.command); | |
51 | printk("%s: hob: nsect 0x%02x lbal 0x%02x lbam 0x%02x lbah 0x%02x\n", | |
52 | s, cmd->hob.nsect, cmd->hob.lbal, cmd->hob.lbam, cmd->hob.lbah); | |
807e35d6 | 53 | #endif |
089c5c7e BZ |
54 | } |
55 | ||
1da177e4 LT |
56 | int taskfile_lib_get_identify (ide_drive_t *drive, u8 *buf) |
57 | { | |
22aa4b32 | 58 | struct ide_cmd cmd; |
650d841d | 59 | |
22aa4b32 BZ |
60 | memset(&cmd, 0, sizeof(cmd)); |
61 | cmd.tf.nsect = 0x01; | |
1da177e4 | 62 | if (drive->media == ide_disk) |
22aa4b32 | 63 | cmd.tf.command = ATA_CMD_ID_ATA; |
1da177e4 | 64 | else |
22aa4b32 | 65 | cmd.tf.command = ATA_CMD_ID_ATAPI; |
60f85019 SS |
66 | cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE; |
67 | cmd.valid.in.tf = IDE_VALID_IN_TF | IDE_VALID_DEVICE; | |
0dfb991c | 68 | cmd.protocol = ATA_PROT_PIO; |
22aa4b32 BZ |
69 | |
70 | return ide_raw_taskfile(drive, &cmd, buf, 1); | |
1da177e4 LT |
71 | } |
72 | ||
1192e528 | 73 | static ide_startstop_t task_no_data_intr(ide_drive_t *); |
adb1af98 | 74 | static ide_startstop_t pre_task_out_intr(ide_drive_t *, struct ide_cmd *); |
901bd08a | 75 | static ide_startstop_t task_pio_intr(ide_drive_t *); |
1192e528 | 76 | |
adb1af98 | 77 | ide_startstop_t do_rw_taskfile(ide_drive_t *drive, struct ide_cmd *orig_cmd) |
1da177e4 | 78 | { |
898ec223 | 79 | ide_hwif_t *hwif = drive->hwif; |
adb1af98 | 80 | struct ide_cmd *cmd = &hwif->cmd; |
22aa4b32 | 81 | struct ide_taskfile *tf = &cmd->tf; |
57d7366b | 82 | ide_handler_t *handler = NULL; |
374e042c | 83 | const struct ide_tp_ops *tp_ops = hwif->tp_ops; |
f37afdac | 84 | const struct ide_dma_ops *dma_ops = hwif->dma_ops; |
1da177e4 | 85 | |
0dfb991c BZ |
86 | if (orig_cmd->protocol == ATA_PROT_PIO && |
87 | (orig_cmd->tf_flags & IDE_TFLAG_MULTI_PIO) && | |
88 | drive->mult_count == 0) { | |
89 | printk(KERN_ERR "%s: multimode not set!\n", drive->name); | |
90 | return ide_stopped; | |
1edee60e BZ |
91 | } |
92 | ||
adb1af98 BZ |
93 | if (orig_cmd->ftf_flags & IDE_FTFLAG_FLAGGED) |
94 | orig_cmd->ftf_flags |= IDE_FTFLAG_SET_IN_FLAGS; | |
1edee60e | 95 | |
adb1af98 | 96 | memcpy(cmd, orig_cmd, sizeof(*cmd)); |
d6ff9f64 | 97 | |
22aa4b32 | 98 | if ((cmd->tf_flags & IDE_TFLAG_DMA_PIO_FALLBACK) == 0) { |
745483f1 | 99 | ide_tf_dump(drive->name, cmd); |
ecf3a31d | 100 | tp_ops->write_devctl(hwif, ATA_DEVCTL_OBS); |
35218d1c SS |
101 | |
102 | if (cmd->ftf_flags & IDE_FTFLAG_OUT_DATA) { | |
745483f1 | 103 | u8 data[2] = { cmd->tf.data, cmd->hob.data }; |
35218d1c SS |
104 | |
105 | tp_ops->output_data(drive, cmd, data, 2); | |
106 | } | |
4109d19a SS |
107 | |
108 | if (cmd->valid.out.tf & IDE_VALID_DEVICE) { | |
109 | u8 HIHI = (cmd->tf_flags & IDE_TFLAG_LBA48) ? | |
110 | 0xE0 : 0xEF; | |
111 | ||
112 | if (!(cmd->ftf_flags & IDE_FTFLAG_FLAGGED)) | |
113 | cmd->tf.device &= HIHI; | |
114 | cmd->tf.device |= drive->select; | |
115 | } | |
116 | ||
c9ff9e7b SS |
117 | tp_ops->tf_load(drive, &cmd->hob, cmd->valid.out.hob); |
118 | tp_ops->tf_load(drive, &cmd->tf, cmd->valid.out.tf); | |
089c5c7e | 119 | } |
1da177e4 | 120 | |
0dfb991c BZ |
121 | switch (cmd->protocol) { |
122 | case ATA_PROT_PIO: | |
123 | if (cmd->tf_flags & IDE_TFLAG_WRITE) { | |
124 | tp_ops->exec_command(hwif, tf->command); | |
125 | ndelay(400); /* FIXME */ | |
126 | return pre_task_out_intr(drive, cmd); | |
127 | } | |
901bd08a | 128 | handler = task_pio_intr; |
1192e528 | 129 | /* fall-through */ |
0dfb991c | 130 | case ATA_PROT_NODATA: |
57d7366b BZ |
131 | if (handler == NULL) |
132 | handler = task_no_data_intr; | |
35b5d0be | 133 | ide_execute_command(drive, cmd, handler, WAIT_WORSTCASE); |
1da177e4 | 134 | return ide_started; |
b788ee9c | 135 | case ATA_PROT_DMA: |
5ae5412d | 136 | if (ide_dma_prepare(drive, cmd)) |
10d90157 | 137 | return ide_stopped; |
22117d6e | 138 | hwif->expiry = dma_ops->dma_timer_expiry; |
35b5d0be | 139 | ide_execute_command(drive, cmd, ide_dma_intr, 2 * WAIT_CMD); |
5e37bdc0 | 140 | dma_ops->dma_start(drive); |
b788ee9c | 141 | default: |
74095a91 | 142 | return ide_started; |
1da177e4 | 143 | } |
1da177e4 | 144 | } |
f6e29e35 | 145 | EXPORT_SYMBOL_GPL(do_rw_taskfile); |
1da177e4 | 146 | |
d6ff9f64 | 147 | static ide_startstop_t task_no_data_intr(ide_drive_t *drive) |
1da177e4 | 148 | { |
b73c7ee2 | 149 | ide_hwif_t *hwif = drive->hwif; |
22aa4b32 BZ |
150 | struct ide_cmd *cmd = &hwif->cmd; |
151 | struct ide_taskfile *tf = &cmd->tf; | |
152 | int custom = (cmd->tf_flags & IDE_TFLAG_CUSTOM_HANDLER) ? 1 : 0; | |
d6ff9f64 | 153 | int retries = (custom && tf->command == ATA_CMD_INIT_DEV_PARAMS) ? 5 : 1; |
1da177e4 LT |
154 | u8 stat; |
155 | ||
90d2c6bc BZ |
156 | local_irq_enable_in_hardirq(); |
157 | ||
374e042c BZ |
158 | while (1) { |
159 | stat = hwif->tp_ops->read_status(hwif); | |
3a7d2484 | 160 | if ((stat & ATA_BUSY) == 0 || retries-- == 0) |
374e042c | 161 | break; |
1da177e4 | 162 | udelay(10); |
374e042c | 163 | }; |
1da177e4 | 164 | |
d6ff9f64 BZ |
165 | if (!OK_STAT(stat, ATA_DRDY, BAD_STAT)) { |
166 | if (custom && tf->command == ATA_CMD_SET_MULTI) { | |
167 | drive->mult_req = drive->mult_count = 0; | |
ca1b96e0 | 168 | drive->special_flags |= IDE_SFLAG_RECALIBRATE; |
d6ff9f64 BZ |
169 | (void)ide_dump_status(drive, __func__, stat); |
170 | return ide_stopped; | |
171 | } else if (custom && tf->command == ATA_CMD_INIT_DEV_PARAMS) { | |
172 | if ((stat & (ATA_ERR | ATA_DRQ)) == 0) { | |
173 | ide_set_handler(drive, &task_no_data_intr, | |
60c0cd02 | 174 | WAIT_WORSTCASE); |
d6ff9f64 BZ |
175 | return ide_started; |
176 | } | |
177 | } | |
1da177e4 | 178 | return ide_error(drive, "task_no_data_intr", stat); |
d6ff9f64 | 179 | } |
c47137a9 | 180 | |
e7fedc3c | 181 | if (custom && tf->command == ATA_CMD_SET_MULTI) |
d6ff9f64 | 182 | drive->mult_count = drive->mult_req; |
1da177e4 | 183 | |
d364c7f5 BZ |
184 | if (custom == 0 || tf->command == ATA_CMD_IDLEIMMEDIATE || |
185 | tf->command == ATA_CMD_CHK_POWER) { | |
a09485df | 186 | struct request *rq = hwif->rq; |
a09485df BZ |
187 | |
188 | if (blk_pm_request(rq)) | |
189 | ide_complete_pm_rq(drive, rq); | |
2230d90d BZ |
190 | else |
191 | ide_finish_cmd(drive, cmd, stat); | |
a09485df BZ |
192 | } |
193 | ||
1da177e4 LT |
194 | return ide_stopped; |
195 | } | |
196 | ||
da6f4c7f | 197 | static u8 wait_drive_not_busy(ide_drive_t *drive) |
1da177e4 | 198 | { |
b73c7ee2 | 199 | ide_hwif_t *hwif = drive->hwif; |
b42fa133 | 200 | int retries; |
1da177e4 LT |
201 | u8 stat; |
202 | ||
203 | /* | |
f54feafa BZ |
204 | * Last sector was transfered, wait until device is ready. This can |
205 | * take up to 6 ms on some ATAPI devices, so we will wait max 10 ms. | |
1da177e4 | 206 | */ |
f54feafa | 207 | for (retries = 0; retries < 1000; retries++) { |
374e042c | 208 | stat = hwif->tp_ops->read_status(hwif); |
c47137a9 | 209 | |
3a7d2484 | 210 | if (stat & ATA_BUSY) |
b42fa133 MY |
211 | udelay(10); |
212 | else | |
213 | break; | |
214 | } | |
1da177e4 | 215 | |
3a7d2484 | 216 | if (stat & ATA_BUSY) |
1da177e4 LT |
217 | printk(KERN_ERR "%s: drive still BUSY!\n", drive->name); |
218 | ||
219 | return stat; | |
220 | } | |
221 | ||
a08915ba BZ |
222 | void ide_pio_bytes(ide_drive_t *drive, struct ide_cmd *cmd, |
223 | unsigned int write, unsigned int len) | |
1da177e4 LT |
224 | { |
225 | ide_hwif_t *hwif = drive->hwif; | |
226 | struct scatterlist *sg = hwif->sg_table; | |
b6308ee0 | 227 | struct scatterlist *cursg = cmd->cursg; |
1da177e4 | 228 | struct page *page; |
1da177e4 | 229 | unsigned long flags; |
1da177e4 LT |
230 | unsigned int offset; |
231 | u8 *buf; | |
232 | ||
b6308ee0 | 233 | cursg = cmd->cursg; |
7a00798b BZ |
234 | if (cursg == NULL) |
235 | cursg = cmd->cursg = sg; | |
236 | ||
237 | while (len) { | |
238 | unsigned nr_bytes = min(len, cursg->length - cmd->cursg_ofs); | |
55c16a70 | 239 | |
7a00798b BZ |
240 | if (nr_bytes > PAGE_SIZE) |
241 | nr_bytes = PAGE_SIZE; | |
1da177e4 | 242 | |
7a00798b BZ |
243 | page = sg_page(cursg); |
244 | offset = cursg->offset + cmd->cursg_ofs; | |
245 | ||
246 | /* get the current page and offset */ | |
247 | page = nth_page(page, (offset >> PAGE_SHIFT)); | |
248 | offset %= PAGE_SIZE; | |
1da177e4 | 249 | |
f2bc3167 BZ |
250 | if (PageHighMem(page)) |
251 | local_irq_save(flags); | |
252 | ||
7a00798b | 253 | buf = kmap_atomic(page, KM_BIO_SRC_IRQ) + offset; |
1da177e4 | 254 | |
7a00798b BZ |
255 | cmd->nleft -= nr_bytes; |
256 | cmd->cursg_ofs += nr_bytes; | |
1da177e4 | 257 | |
7a00798b BZ |
258 | if (cmd->cursg_ofs == cursg->length) { |
259 | cursg = cmd->cursg = sg_next(cmd->cursg); | |
260 | cmd->cursg_ofs = 0; | |
261 | } | |
1da177e4 | 262 | |
7a00798b BZ |
263 | /* do the actual data transfer */ |
264 | if (write) | |
265 | hwif->tp_ops->output_data(drive, cmd, buf, nr_bytes); | |
266 | else | |
267 | hwif->tp_ops->input_data(drive, cmd, buf, nr_bytes); | |
1da177e4 | 268 | |
7a00798b | 269 | kunmap_atomic(buf, KM_BIO_SRC_IRQ); |
f2bc3167 BZ |
270 | |
271 | if (PageHighMem(page)) | |
272 | local_irq_restore(flags); | |
1da177e4 | 273 | |
7a00798b BZ |
274 | len -= nr_bytes; |
275 | } | |
1da177e4 | 276 | } |
a08915ba | 277 | EXPORT_SYMBOL_GPL(ide_pio_bytes); |
1da177e4 | 278 | |
adb1af98 BZ |
279 | static void ide_pio_datablock(ide_drive_t *drive, struct ide_cmd *cmd, |
280 | unsigned int write) | |
1da177e4 | 281 | { |
7a00798b BZ |
282 | unsigned int nr_bytes; |
283 | ||
35cf2b94 TH |
284 | u8 saved_io_32bit = drive->io_32bit; |
285 | ||
adb1af98 BZ |
286 | if (cmd->tf_flags & IDE_TFLAG_FS) |
287 | cmd->rq->errors = 0; | |
1da177e4 | 288 | |
22aa4b32 | 289 | if (cmd->tf_flags & IDE_TFLAG_IO_16BIT) |
e3d9a73a | 290 | drive->io_32bit = 0; |
35cf2b94 | 291 | |
651c29a1 AM |
292 | touch_softlockup_watchdog(); |
293 | ||
0dfb991c | 294 | if (cmd->tf_flags & IDE_TFLAG_MULTI_PIO) |
7a00798b | 295 | nr_bytes = min_t(unsigned, cmd->nleft, drive->mult_count << 9); |
0dfb991c | 296 | else |
7a00798b BZ |
297 | nr_bytes = SECTOR_SIZE; |
298 | ||
299 | ide_pio_bytes(drive, cmd, write, nr_bytes); | |
35cf2b94 TH |
300 | |
301 | drive->io_32bit = saved_io_32bit; | |
1da177e4 LT |
302 | } |
303 | ||
041cea10 | 304 | static void ide_error_cmd(ide_drive_t *drive, struct ide_cmd *cmd) |
1da177e4 | 305 | { |
adb1af98 | 306 | if (cmd->tf_flags & IDE_TFLAG_FS) { |
bf717c0a | 307 | int nr_bytes = cmd->nbytes - cmd->nleft; |
1da177e4 | 308 | |
0dfb991c BZ |
309 | if (cmd->protocol == ATA_PROT_PIO && |
310 | ((cmd->tf_flags & IDE_TFLAG_WRITE) || cmd->nleft == 0)) { | |
311 | if (cmd->tf_flags & IDE_TFLAG_MULTI_PIO) | |
bf717c0a | 312 | nr_bytes -= drive->mult_count << 9; |
0dfb991c | 313 | else |
bf717c0a | 314 | nr_bytes -= SECTOR_SIZE; |
1da177e4 LT |
315 | } |
316 | ||
bf717c0a BZ |
317 | if (nr_bytes > 0) |
318 | ide_complete_rq(drive, 0, nr_bytes); | |
1da177e4 | 319 | } |
1da177e4 LT |
320 | } |
321 | ||
adb1af98 | 322 | void ide_finish_cmd(ide_drive_t *drive, struct ide_cmd *cmd, u8 stat) |
1da177e4 | 323 | { |
6902a533 | 324 | struct request *rq = drive->hwif->rq; |
2230d90d | 325 | u8 err = ide_read_error(drive); |
1da177e4 | 326 | |
2230d90d | 327 | ide_complete_cmd(drive, cmd, stat, err); |
6902a533 | 328 | rq->errors = err; |
f974b196 | 329 | ide_complete_rq(drive, err ? -EIO : 0, blk_rq_bytes(rq)); |
1da177e4 LT |
330 | } |
331 | ||
332 | /* | |
901bd08a | 333 | * Handler for command with PIO data phase. |
1da177e4 | 334 | */ |
901bd08a | 335 | static ide_startstop_t task_pio_intr(ide_drive_t *drive) |
1da177e4 LT |
336 | { |
337 | ide_hwif_t *hwif = drive->hwif; | |
adb1af98 | 338 | struct ide_cmd *cmd = &drive->hwif->cmd; |
374e042c | 339 | u8 stat = hwif->tp_ops->read_status(hwif); |
901bd08a | 340 | u8 write = !!(cmd->tf_flags & IDE_TFLAG_WRITE); |
1da177e4 | 341 | |
901bd08a BZ |
342 | if (write == 0) { |
343 | /* Error? */ | |
344 | if (stat & ATA_ERR) | |
0a1248c5 | 345 | goto out_err; |
1da177e4 | 346 | |
901bd08a | 347 | /* Didn't want any data? Odd. */ |
151055ed BZ |
348 | if ((stat & ATA_DRQ) == 0) { |
349 | /* Command all done? */ | |
0a1248c5 BZ |
350 | if (OK_STAT(stat, ATA_DRDY, ATA_BUSY)) |
351 | goto out_end; | |
151055ed BZ |
352 | |
353 | /* Assume it was a spurious irq */ | |
0a1248c5 | 354 | goto out_wait; |
151055ed | 355 | } |
901bd08a BZ |
356 | } else { |
357 | if (!OK_STAT(stat, DRIVE_READY, drive->bad_wstat)) | |
0a1248c5 | 358 | goto out_err; |
1da177e4 | 359 | |
901bd08a BZ |
360 | /* Deal with unexpected ATA data phase. */ |
361 | if (((stat & ATA_DRQ) == 0) ^ (cmd->nleft == 0)) | |
0a1248c5 | 362 | goto out_err; |
901bd08a BZ |
363 | } |
364 | ||
0a1248c5 BZ |
365 | if (write && cmd->nleft == 0) |
366 | goto out_end; | |
1da177e4 LT |
367 | |
368 | /* Still data left to transfer. */ | |
901bd08a | 369 | ide_pio_datablock(drive, cmd, write); |
1da177e4 | 370 | |
901bd08a BZ |
371 | /* Are we done? Check status and finish transfer. */ |
372 | if (write == 0 && cmd->nleft == 0) { | |
373 | stat = wait_drive_not_busy(drive); | |
374 | if (!OK_STAT(stat, 0, BAD_STAT)) | |
0a1248c5 | 375 | goto out_err; |
1da177e4 | 376 | |
0a1248c5 BZ |
377 | goto out_end; |
378 | } | |
379 | out_wait: | |
1da177e4 | 380 | /* Still data left to transfer. */ |
60c0cd02 | 381 | ide_set_handler(drive, &task_pio_intr, WAIT_WORSTCASE); |
1da177e4 | 382 | return ide_started; |
0a1248c5 | 383 | out_end: |
2230d90d BZ |
384 | if ((cmd->tf_flags & IDE_TFLAG_FS) == 0) |
385 | ide_finish_cmd(drive, cmd, stat); | |
386 | else | |
9780e2dd | 387 | ide_complete_rq(drive, 0, blk_rq_sectors(cmd->rq) << 9); |
0a1248c5 BZ |
388 | return ide_stopped; |
389 | out_err: | |
041cea10 BZ |
390 | ide_error_cmd(drive, cmd); |
391 | return ide_error(drive, __func__, stat); | |
1da177e4 LT |
392 | } |
393 | ||
adb1af98 BZ |
394 | static ide_startstop_t pre_task_out_intr(ide_drive_t *drive, |
395 | struct ide_cmd *cmd) | |
1da177e4 LT |
396 | { |
397 | ide_startstop_t startstop; | |
398 | ||
3a7d2484 | 399 | if (ide_wait_stat(&startstop, drive, ATA_DRQ, |
1da177e4 LT |
400 | drive->bad_wstat, WAIT_DRQ)) { |
401 | printk(KERN_ERR "%s: no DRQ after issuing %sWRITE%s\n", | |
c7db966b | 402 | drive->name, |
0dfb991c | 403 | (cmd->tf_flags & IDE_TFLAG_MULTI_PIO) ? "MULT" : "", |
97100fc8 | 404 | (drive->dev_flags & IDE_DFLAG_LBA48) ? "_EXT" : ""); |
1da177e4 LT |
405 | return startstop; |
406 | } | |
407 | ||
97100fc8 | 408 | if ((drive->dev_flags & IDE_DFLAG_UNMASK) == 0) |
1da177e4 LT |
409 | local_irq_disable(); |
410 | ||
60c0cd02 | 411 | ide_set_handler(drive, &task_pio_intr, WAIT_WORSTCASE); |
901bd08a | 412 | |
adb1af98 | 413 | ide_pio_datablock(drive, cmd, 1); |
1da177e4 LT |
414 | |
415 | return ide_started; | |
416 | } | |
1da177e4 | 417 | |
22aa4b32 BZ |
418 | int ide_raw_taskfile(ide_drive_t *drive, struct ide_cmd *cmd, u8 *buf, |
419 | u16 nsect) | |
1da177e4 | 420 | { |
154ed280 FT |
421 | struct request *rq; |
422 | int error; | |
1da177e4 | 423 | |
154ed280 FT |
424 | rq = blk_get_request(drive->queue, READ, __GFP_WAIT); |
425 | rq->cmd_type = REQ_TYPE_ATA_TASKFILE; | |
d868ca24 TH |
426 | |
427 | if (cmd->tf_flags & IDE_TFLAG_WRITE) | |
428 | rq->cmd_flags |= REQ_RW; | |
1da177e4 LT |
429 | |
430 | /* | |
431 | * (ks) We transfer currently only whole sectors. | |
432 | * This is suffient for now. But, it would be great, | |
433 | * if we would find a solution to transfer any size. | |
434 | * To support special commands like READ LONG. | |
435 | */ | |
d868ca24 TH |
436 | if (nsect) { |
437 | error = blk_rq_map_kern(drive->queue, rq, buf, | |
438 | nsect * SECTOR_SIZE, __GFP_WAIT); | |
439 | if (error) | |
440 | goto put_req; | |
441 | } | |
1da177e4 | 442 | |
22aa4b32 BZ |
443 | rq->special = cmd; |
444 | cmd->rq = rq; | |
1da177e4 | 445 | |
154ed280 | 446 | error = blk_execute_rq(drive->queue, NULL, rq, 0); |
154ed280 | 447 | |
d868ca24 TH |
448 | put_req: |
449 | blk_put_request(rq); | |
154ed280 | 450 | return error; |
1da177e4 LT |
451 | } |
452 | ||
1da177e4 LT |
453 | EXPORT_SYMBOL(ide_raw_taskfile); |
454 | ||
22aa4b32 | 455 | int ide_no_data_taskfile(ide_drive_t *drive, struct ide_cmd *cmd) |
9a3c49be | 456 | { |
0dfb991c | 457 | cmd->protocol = ATA_PROT_NODATA; |
9a3c49be | 458 | |
22aa4b32 | 459 | return ide_raw_taskfile(drive, cmd, NULL, 0); |
9a3c49be BZ |
460 | } |
461 | EXPORT_SYMBOL_GPL(ide_no_data_taskfile); | |
462 | ||
26a5b040 | 463 | #ifdef CONFIG_IDE_TASK_IOCTL |
22aa4b32 | 464 | int ide_taskfile_ioctl(ide_drive_t *drive, unsigned long arg) |
1da177e4 LT |
465 | { |
466 | ide_task_request_t *req_task; | |
22aa4b32 | 467 | struct ide_cmd cmd; |
1da177e4 LT |
468 | u8 *outbuf = NULL; |
469 | u8 *inbuf = NULL; | |
ac026ff2 | 470 | u8 *data_buf = NULL; |
1da177e4 LT |
471 | int err = 0; |
472 | int tasksize = sizeof(struct ide_task_request_s); | |
3a42bb22 AC |
473 | unsigned int taskin = 0; |
474 | unsigned int taskout = 0; | |
ac026ff2 | 475 | u16 nsect = 0; |
1da177e4 LT |
476 | char __user *buf = (char __user *)arg; |
477 | ||
478 | // printk("IDE Taskfile ...\n"); | |
479 | ||
f5e3c2fa | 480 | req_task = kzalloc(tasksize, GFP_KERNEL); |
1da177e4 | 481 | if (req_task == NULL) return -ENOMEM; |
1da177e4 LT |
482 | if (copy_from_user(req_task, buf, tasksize)) { |
483 | kfree(req_task); | |
484 | return -EFAULT; | |
485 | } | |
486 | ||
3a42bb22 AC |
487 | taskout = req_task->out_size; |
488 | taskin = req_task->in_size; | |
489 | ||
490 | if (taskin > 65536 || taskout > 65536) { | |
491 | err = -EINVAL; | |
492 | goto abort; | |
493 | } | |
1da177e4 LT |
494 | |
495 | if (taskout) { | |
496 | int outtotal = tasksize; | |
f5e3c2fa | 497 | outbuf = kzalloc(taskout, GFP_KERNEL); |
1da177e4 LT |
498 | if (outbuf == NULL) { |
499 | err = -ENOMEM; | |
500 | goto abort; | |
501 | } | |
1da177e4 LT |
502 | if (copy_from_user(outbuf, buf + outtotal, taskout)) { |
503 | err = -EFAULT; | |
504 | goto abort; | |
505 | } | |
506 | } | |
507 | ||
508 | if (taskin) { | |
509 | int intotal = tasksize + taskout; | |
f5e3c2fa | 510 | inbuf = kzalloc(taskin, GFP_KERNEL); |
1da177e4 LT |
511 | if (inbuf == NULL) { |
512 | err = -ENOMEM; | |
513 | goto abort; | |
514 | } | |
1da177e4 LT |
515 | if (copy_from_user(inbuf, buf + intotal, taskin)) { |
516 | err = -EFAULT; | |
517 | goto abort; | |
518 | } | |
519 | } | |
520 | ||
22aa4b32 | 521 | memset(&cmd, 0, sizeof(cmd)); |
1da177e4 | 522 | |
745483f1 SS |
523 | memcpy(&cmd.hob, req_task->hob_ports, HDIO_DRIVE_HOB_HDR_SIZE - 2); |
524 | memcpy(&cmd.tf, req_task->io_ports, HDIO_DRIVE_TASK_HDR_SIZE); | |
866e2ec9 | 525 | |
60f85019 SS |
526 | cmd.valid.out.tf = IDE_VALID_DEVICE; |
527 | cmd.valid.in.tf = IDE_VALID_DEVICE | IDE_VALID_IN_TF; | |
528 | cmd.tf_flags = IDE_TFLAG_IO_16BIT; | |
1da177e4 | 529 | |
60f85019 SS |
530 | if (drive->dev_flags & IDE_DFLAG_LBA48) { |
531 | cmd.tf_flags |= IDE_TFLAG_LBA48; | |
532 | cmd.valid.in.hob = IDE_VALID_IN_HOB; | |
533 | } | |
a3bbb9d8 | 534 | |
74095a91 | 535 | if (req_task->out_flags.all) { |
22aa4b32 | 536 | cmd.ftf_flags |= IDE_FTFLAG_FLAGGED; |
74095a91 BZ |
537 | |
538 | if (req_task->out_flags.b.data) | |
22aa4b32 | 539 | cmd.ftf_flags |= IDE_FTFLAG_OUT_DATA; |
74095a91 BZ |
540 | |
541 | if (req_task->out_flags.b.nsector_hob) | |
60f85019 | 542 | cmd.valid.out.hob |= IDE_VALID_NSECT; |
74095a91 | 543 | if (req_task->out_flags.b.sector_hob) |
60f85019 | 544 | cmd.valid.out.hob |= IDE_VALID_LBAL; |
74095a91 | 545 | if (req_task->out_flags.b.lcyl_hob) |
60f85019 | 546 | cmd.valid.out.hob |= IDE_VALID_LBAM; |
74095a91 | 547 | if (req_task->out_flags.b.hcyl_hob) |
60f85019 | 548 | cmd.valid.out.hob |= IDE_VALID_LBAH; |
74095a91 BZ |
549 | |
550 | if (req_task->out_flags.b.error_feature) | |
60f85019 | 551 | cmd.valid.out.tf |= IDE_VALID_FEATURE; |
74095a91 | 552 | if (req_task->out_flags.b.nsector) |
60f85019 | 553 | cmd.valid.out.tf |= IDE_VALID_NSECT; |
74095a91 | 554 | if (req_task->out_flags.b.sector) |
60f85019 | 555 | cmd.valid.out.tf |= IDE_VALID_LBAL; |
74095a91 | 556 | if (req_task->out_flags.b.lcyl) |
60f85019 | 557 | cmd.valid.out.tf |= IDE_VALID_LBAM; |
74095a91 | 558 | if (req_task->out_flags.b.hcyl) |
60f85019 | 559 | cmd.valid.out.tf |= IDE_VALID_LBAH; |
a3bbb9d8 | 560 | } else { |
60f85019 | 561 | cmd.valid.out.tf |= IDE_VALID_OUT_TF; |
22aa4b32 | 562 | if (cmd.tf_flags & IDE_TFLAG_LBA48) |
60f85019 | 563 | cmd.valid.out.hob |= IDE_VALID_OUT_HOB; |
74095a91 BZ |
564 | } |
565 | ||
866e2ec9 | 566 | if (req_task->in_flags.b.data) |
22aa4b32 | 567 | cmd.ftf_flags |= IDE_FTFLAG_IN_DATA; |
866e2ec9 | 568 | |
04d09b0e BZ |
569 | if (req_task->req_cmd == IDE_DRIVE_TASK_RAW_WRITE) { |
570 | /* fixup data phase if needed */ | |
571 | if (req_task->data_phase == TASKFILE_IN_DMAQ || | |
572 | req_task->data_phase == TASKFILE_IN_DMA) | |
0dfb991c | 573 | cmd.tf_flags |= IDE_TFLAG_WRITE; |
04d09b0e BZ |
574 | } |
575 | ||
0dfb991c BZ |
576 | cmd.protocol = ATA_PROT_DMA; |
577 | ||
578 | switch (req_task->data_phase) { | |
1da177e4 LT |
579 | case TASKFILE_MULTI_OUT: |
580 | if (!drive->mult_count) { | |
581 | /* (hs): give up if multcount is not set */ | |
582 | printk(KERN_ERR "%s: %s Multimode Write " \ | |
583 | "multcount is not set\n", | |
eb63963a | 584 | drive->name, __func__); |
1da177e4 LT |
585 | err = -EPERM; |
586 | goto abort; | |
587 | } | |
0dfb991c | 588 | cmd.tf_flags |= IDE_TFLAG_MULTI_PIO; |
1da177e4 LT |
589 | /* fall through */ |
590 | case TASKFILE_OUT: | |
0dfb991c | 591 | cmd.protocol = ATA_PROT_PIO; |
ac026ff2 BZ |
592 | /* fall through */ |
593 | case TASKFILE_OUT_DMAQ: | |
594 | case TASKFILE_OUT_DMA: | |
04d09b0e | 595 | cmd.tf_flags |= IDE_TFLAG_WRITE; |
ac026ff2 BZ |
596 | nsect = taskout / SECTOR_SIZE; |
597 | data_buf = outbuf; | |
1da177e4 LT |
598 | break; |
599 | case TASKFILE_MULTI_IN: | |
600 | if (!drive->mult_count) { | |
601 | /* (hs): give up if multcount is not set */ | |
602 | printk(KERN_ERR "%s: %s Multimode Read failure " \ | |
603 | "multcount is not set\n", | |
eb63963a | 604 | drive->name, __func__); |
1da177e4 LT |
605 | err = -EPERM; |
606 | goto abort; | |
607 | } | |
0dfb991c | 608 | cmd.tf_flags |= IDE_TFLAG_MULTI_PIO; |
1da177e4 LT |
609 | /* fall through */ |
610 | case TASKFILE_IN: | |
0dfb991c | 611 | cmd.protocol = ATA_PROT_PIO; |
ac026ff2 BZ |
612 | /* fall through */ |
613 | case TASKFILE_IN_DMAQ: | |
614 | case TASKFILE_IN_DMA: | |
615 | nsect = taskin / SECTOR_SIZE; | |
616 | data_buf = inbuf; | |
1da177e4 LT |
617 | break; |
618 | case TASKFILE_NO_DATA: | |
0dfb991c | 619 | cmd.protocol = ATA_PROT_NODATA; |
1da177e4 LT |
620 | break; |
621 | default: | |
622 | err = -EFAULT; | |
623 | goto abort; | |
624 | } | |
625 | ||
ac026ff2 BZ |
626 | if (req_task->req_cmd == IDE_DRIVE_TASK_NO_DATA) |
627 | nsect = 0; | |
628 | else if (!nsect) { | |
745483f1 | 629 | nsect = (cmd.hob.nsect << 8) | cmd.tf.nsect; |
ac026ff2 BZ |
630 | |
631 | if (!nsect) { | |
632 | printk(KERN_ERR "%s: in/out command without data\n", | |
633 | drive->name); | |
634 | err = -EFAULT; | |
635 | goto abort; | |
636 | } | |
637 | } | |
638 | ||
22aa4b32 | 639 | err = ide_raw_taskfile(drive, &cmd, data_buf, nsect); |
ac026ff2 | 640 | |
745483f1 SS |
641 | memcpy(req_task->hob_ports, &cmd.hob, HDIO_DRIVE_HOB_HDR_SIZE - 2); |
642 | memcpy(req_task->io_ports, &cmd.tf, HDIO_DRIVE_TASK_HDR_SIZE); | |
866e2ec9 | 643 | |
22aa4b32 | 644 | if ((cmd.ftf_flags & IDE_FTFLAG_SET_IN_FLAGS) && |
866e2ec9 BZ |
645 | req_task->in_flags.all == 0) { |
646 | req_task->in_flags.all = IDE_TASKFILE_STD_IN_FLAGS; | |
97100fc8 | 647 | if (drive->dev_flags & IDE_DFLAG_LBA48) |
866e2ec9 BZ |
648 | req_task->in_flags.all |= (IDE_HOB_STD_IN_FLAGS << 8); |
649 | } | |
1da177e4 LT |
650 | |
651 | if (copy_to_user(buf, req_task, tasksize)) { | |
652 | err = -EFAULT; | |
653 | goto abort; | |
654 | } | |
655 | if (taskout) { | |
656 | int outtotal = tasksize; | |
657 | if (copy_to_user(buf + outtotal, outbuf, taskout)) { | |
658 | err = -EFAULT; | |
659 | goto abort; | |
660 | } | |
661 | } | |
662 | if (taskin) { | |
663 | int intotal = tasksize + taskout; | |
664 | if (copy_to_user(buf + intotal, inbuf, taskin)) { | |
665 | err = -EFAULT; | |
666 | goto abort; | |
667 | } | |
668 | } | |
669 | abort: | |
670 | kfree(req_task); | |
6044ec88 JJ |
671 | kfree(outbuf); |
672 | kfree(inbuf); | |
1da177e4 LT |
673 | |
674 | // printk("IDE Taskfile ioctl ended. rc = %i\n", err); | |
675 | ||
1da177e4 LT |
676 | return err; |
677 | } | |
26a5b040 | 678 | #endif |