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 BZ |
49 | cmd.tf.command = ATA_CMD_ID_ATAPI; |
50 | cmd.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; | |
51 | cmd.data_phase = TASKFILE_IN; | |
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 *); |
f6e29e35 | 58 | static ide_startstop_t task_in_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 | |
adb1af98 BZ |
69 | if (orig_cmd->data_phase == TASKFILE_MULTI_IN || |
70 | orig_cmd->data_phase == TASKFILE_MULTI_OUT) { | |
1edee60e BZ |
71 | if (!drive->mult_count) { |
72 | printk(KERN_ERR "%s: multimode not set!\n", | |
73 | drive->name); | |
74 | return ide_stopped; | |
75 | } | |
76 | } | |
77 | ||
adb1af98 BZ |
78 | if (orig_cmd->ftf_flags & IDE_FTFLAG_FLAGGED) |
79 | orig_cmd->ftf_flags |= IDE_FTFLAG_SET_IN_FLAGS; | |
1edee60e | 80 | |
adb1af98 | 81 | memcpy(cmd, orig_cmd, sizeof(*cmd)); |
d6ff9f64 | 82 | |
22aa4b32 | 83 | if ((cmd->tf_flags & IDE_TFLAG_DMA_PIO_FALLBACK) == 0) { |
089c5c7e | 84 | ide_tf_dump(drive->name, tf); |
374e042c | 85 | tp_ops->set_irq(hwif, 1); |
ed4af48f | 86 | SELECT_MASK(drive, 0); |
22aa4b32 | 87 | tp_ops->tf_load(drive, cmd); |
089c5c7e | 88 | } |
1da177e4 | 89 | |
22aa4b32 | 90 | switch (cmd->data_phase) { |
10d90157 BZ |
91 | case TASKFILE_MULTI_OUT: |
92 | case TASKFILE_OUT: | |
374e042c | 93 | tp_ops->exec_command(hwif, tf->command); |
10d90157 | 94 | ndelay(400); /* FIXME */ |
adb1af98 | 95 | return pre_task_out_intr(drive, cmd); |
10d90157 BZ |
96 | case TASKFILE_MULTI_IN: |
97 | case TASKFILE_IN: | |
57d7366b | 98 | handler = task_in_intr; |
1192e528 | 99 | /* fall-through */ |
10d90157 | 100 | case TASKFILE_NO_DATA: |
57d7366b BZ |
101 | if (handler == NULL) |
102 | handler = task_no_data_intr; | |
57d7366b BZ |
103 | ide_execute_command(drive, tf->command, handler, |
104 | WAIT_WORSTCASE, NULL); | |
1da177e4 | 105 | return ide_started; |
10d90157 | 106 | default: |
97100fc8 | 107 | if ((drive->dev_flags & IDE_DFLAG_USING_DMA) == 0 || |
e6830a86 | 108 | ide_build_sglist(drive, hwif->rq) == 0 || |
97100fc8 | 109 | dma_ops->dma_setup(drive)) |
10d90157 | 110 | return ide_stopped; |
5e37bdc0 BZ |
111 | dma_ops->dma_exec_cmd(drive, tf->command); |
112 | dma_ops->dma_start(drive); | |
74095a91 | 113 | return ide_started; |
1da177e4 | 114 | } |
1da177e4 | 115 | } |
f6e29e35 | 116 | EXPORT_SYMBOL_GPL(do_rw_taskfile); |
1da177e4 | 117 | |
1da177e4 | 118 | /* |
d6ff9f64 | 119 | * Handler for commands without a data phase |
1da177e4 | 120 | */ |
d6ff9f64 | 121 | static ide_startstop_t task_no_data_intr(ide_drive_t *drive) |
1da177e4 | 122 | { |
b73c7ee2 | 123 | ide_hwif_t *hwif = drive->hwif; |
22aa4b32 BZ |
124 | struct ide_cmd *cmd = &hwif->cmd; |
125 | struct ide_taskfile *tf = &cmd->tf; | |
126 | int custom = (cmd->tf_flags & IDE_TFLAG_CUSTOM_HANDLER) ? 1 : 0; | |
d6ff9f64 | 127 | int retries = (custom && tf->command == ATA_CMD_INIT_DEV_PARAMS) ? 5 : 1; |
1da177e4 LT |
128 | u8 stat; |
129 | ||
90d2c6bc BZ |
130 | local_irq_enable_in_hardirq(); |
131 | ||
374e042c BZ |
132 | while (1) { |
133 | stat = hwif->tp_ops->read_status(hwif); | |
3a7d2484 | 134 | if ((stat & ATA_BUSY) == 0 || retries-- == 0) |
374e042c | 135 | break; |
1da177e4 | 136 | udelay(10); |
374e042c | 137 | }; |
1da177e4 | 138 | |
d6ff9f64 BZ |
139 | if (!OK_STAT(stat, ATA_DRDY, BAD_STAT)) { |
140 | if (custom && tf->command == ATA_CMD_SET_MULTI) { | |
141 | drive->mult_req = drive->mult_count = 0; | |
142 | drive->special.b.recalibrate = 1; | |
143 | (void)ide_dump_status(drive, __func__, stat); | |
144 | return ide_stopped; | |
145 | } else if (custom && tf->command == ATA_CMD_INIT_DEV_PARAMS) { | |
146 | if ((stat & (ATA_ERR | ATA_DRQ)) == 0) { | |
147 | ide_set_handler(drive, &task_no_data_intr, | |
148 | WAIT_WORSTCASE, NULL); | |
149 | return ide_started; | |
150 | } | |
151 | } | |
1da177e4 | 152 | return ide_error(drive, "task_no_data_intr", stat); |
d6ff9f64 | 153 | } |
c47137a9 | 154 | |
a09485df | 155 | if (custom && tf->command == ATA_CMD_IDLEIMMEDIATE) { |
22aa4b32 | 156 | hwif->tp_ops->tf_read(drive, cmd); |
4abdc6ee EO |
157 | if (tf->lbal != 0xc4) { |
158 | printk(KERN_ERR "%s: head unload failed!\n", | |
159 | drive->name); | |
160 | ide_tf_dump(drive->name, tf); | |
161 | } else | |
162 | drive->dev_flags |= IDE_DFLAG_PARKED; | |
a09485df | 163 | } else if (custom && tf->command == ATA_CMD_SET_MULTI) |
d6ff9f64 | 164 | drive->mult_count = drive->mult_req; |
1da177e4 | 165 | |
a09485df BZ |
166 | if (custom == 0 || tf->command == ATA_CMD_IDLEIMMEDIATE) { |
167 | struct request *rq = hwif->rq; | |
168 | u8 err = ide_read_error(drive); | |
169 | ||
170 | if (blk_pm_request(rq)) | |
171 | ide_complete_pm_rq(drive, rq); | |
172 | else { | |
173 | if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) | |
22aa4b32 | 174 | ide_complete_cmd(drive, cmd, stat, err); |
a09485df BZ |
175 | ide_complete_rq(drive, err); |
176 | } | |
177 | } | |
178 | ||
1da177e4 LT |
179 | return ide_stopped; |
180 | } | |
181 | ||
da6f4c7f | 182 | static u8 wait_drive_not_busy(ide_drive_t *drive) |
1da177e4 | 183 | { |
b73c7ee2 | 184 | ide_hwif_t *hwif = drive->hwif; |
b42fa133 | 185 | int retries; |
1da177e4 LT |
186 | u8 stat; |
187 | ||
188 | /* | |
f54feafa BZ |
189 | * Last sector was transfered, wait until device is ready. This can |
190 | * take up to 6 ms on some ATAPI devices, so we will wait max 10 ms. | |
1da177e4 | 191 | */ |
f54feafa | 192 | for (retries = 0; retries < 1000; retries++) { |
374e042c | 193 | stat = hwif->tp_ops->read_status(hwif); |
c47137a9 | 194 | |
3a7d2484 | 195 | if (stat & ATA_BUSY) |
b42fa133 MY |
196 | udelay(10); |
197 | else | |
198 | break; | |
199 | } | |
1da177e4 | 200 | |
3a7d2484 | 201 | if (stat & ATA_BUSY) |
1da177e4 LT |
202 | printk(KERN_ERR "%s: drive still BUSY!\n", drive->name); |
203 | ||
204 | return stat; | |
205 | } | |
206 | ||
adb1af98 | 207 | static void ide_pio_sector(ide_drive_t *drive, struct ide_cmd *cmd, |
92d3ab27 | 208 | unsigned int write) |
1da177e4 LT |
209 | { |
210 | ide_hwif_t *hwif = drive->hwif; | |
211 | struct scatterlist *sg = hwif->sg_table; | |
b6308ee0 | 212 | struct scatterlist *cursg = cmd->cursg; |
1da177e4 LT |
213 | struct page *page; |
214 | #ifdef CONFIG_HIGHMEM | |
215 | unsigned long flags; | |
216 | #endif | |
217 | unsigned int offset; | |
218 | u8 *buf; | |
219 | ||
b6308ee0 | 220 | cursg = cmd->cursg; |
55c16a70 JA |
221 | if (!cursg) { |
222 | cursg = sg; | |
b6308ee0 | 223 | cmd->cursg = sg; |
55c16a70 JA |
224 | } |
225 | ||
45711f1a | 226 | page = sg_page(cursg); |
b6308ee0 | 227 | offset = cursg->offset + cmd->cursg_ofs * SECTOR_SIZE; |
1da177e4 LT |
228 | |
229 | /* get the current page and offset */ | |
230 | page = nth_page(page, (offset >> PAGE_SHIFT)); | |
231 | offset %= PAGE_SIZE; | |
232 | ||
233 | #ifdef CONFIG_HIGHMEM | |
234 | local_irq_save(flags); | |
235 | #endif | |
236 | buf = kmap_atomic(page, KM_BIO_SRC_IRQ) + offset; | |
237 | ||
b6308ee0 BZ |
238 | cmd->nleft--; |
239 | cmd->cursg_ofs++; | |
1da177e4 | 240 | |
b6308ee0 BZ |
241 | if ((cmd->cursg_ofs * SECTOR_SIZE) == cursg->length) { |
242 | cmd->cursg = sg_next(cmd->cursg); | |
243 | cmd->cursg_ofs = 0; | |
1da177e4 LT |
244 | } |
245 | ||
246 | /* do the actual data transfer */ | |
247 | if (write) | |
adb1af98 | 248 | hwif->tp_ops->output_data(drive, cmd, buf, SECTOR_SIZE); |
1da177e4 | 249 | else |
adb1af98 | 250 | hwif->tp_ops->input_data(drive, cmd, buf, SECTOR_SIZE); |
1da177e4 LT |
251 | |
252 | kunmap_atomic(buf, KM_BIO_SRC_IRQ); | |
253 | #ifdef CONFIG_HIGHMEM | |
254 | local_irq_restore(flags); | |
255 | #endif | |
256 | } | |
257 | ||
adb1af98 | 258 | static void ide_pio_multi(ide_drive_t *drive, struct ide_cmd *cmd, |
92d3ab27 | 259 | unsigned int write) |
1da177e4 LT |
260 | { |
261 | unsigned int nsect; | |
262 | ||
b6308ee0 | 263 | nsect = min_t(unsigned int, cmd->nleft, drive->mult_count); |
1da177e4 | 264 | while (nsect--) |
adb1af98 | 265 | ide_pio_sector(drive, cmd, write); |
1da177e4 LT |
266 | } |
267 | ||
adb1af98 BZ |
268 | static void ide_pio_datablock(ide_drive_t *drive, struct ide_cmd *cmd, |
269 | unsigned int write) | |
1da177e4 | 270 | { |
35cf2b94 TH |
271 | u8 saved_io_32bit = drive->io_32bit; |
272 | ||
adb1af98 BZ |
273 | if (cmd->tf_flags & IDE_TFLAG_FS) |
274 | cmd->rq->errors = 0; | |
1da177e4 | 275 | |
22aa4b32 | 276 | if (cmd->tf_flags & IDE_TFLAG_IO_16BIT) |
e3d9a73a | 277 | drive->io_32bit = 0; |
35cf2b94 | 278 | |
651c29a1 AM |
279 | touch_softlockup_watchdog(); |
280 | ||
22aa4b32 | 281 | switch (cmd->data_phase) { |
1da177e4 LT |
282 | case TASKFILE_MULTI_IN: |
283 | case TASKFILE_MULTI_OUT: | |
adb1af98 | 284 | ide_pio_multi(drive, cmd, write); |
1da177e4 LT |
285 | break; |
286 | default: | |
adb1af98 | 287 | ide_pio_sector(drive, cmd, write); |
1da177e4 LT |
288 | break; |
289 | } | |
35cf2b94 TH |
290 | |
291 | drive->io_32bit = saved_io_32bit; | |
1da177e4 LT |
292 | } |
293 | ||
adb1af98 | 294 | static ide_startstop_t task_error(ide_drive_t *drive, struct ide_cmd *cmd, |
1da177e4 LT |
295 | const char *s, u8 stat) |
296 | { | |
adb1af98 | 297 | if (cmd->tf_flags & IDE_TFLAG_FS) { |
b6308ee0 | 298 | int sectors = cmd->nsect - cmd->nleft; |
1da177e4 | 299 | |
22aa4b32 | 300 | switch (cmd->data_phase) { |
1da177e4 | 301 | case TASKFILE_IN: |
b6308ee0 | 302 | if (cmd->nleft) |
1da177e4 LT |
303 | break; |
304 | /* fall through */ | |
305 | case TASKFILE_OUT: | |
306 | sectors--; | |
307 | break; | |
308 | case TASKFILE_MULTI_IN: | |
b6308ee0 | 309 | if (cmd->nleft) |
1da177e4 LT |
310 | break; |
311 | /* fall through */ | |
312 | case TASKFILE_MULTI_OUT: | |
313 | sectors -= drive->mult_count; | |
314 | default: | |
315 | break; | |
316 | } | |
317 | ||
c152cc1a BZ |
318 | if (sectors > 0) |
319 | ide_end_request(drive, 1, sectors); | |
1da177e4 LT |
320 | } |
321 | return ide_error(drive, s, stat); | |
322 | } | |
323 | ||
adb1af98 | 324 | void ide_finish_cmd(ide_drive_t *drive, struct ide_cmd *cmd, u8 stat) |
1da177e4 | 325 | { |
adb1af98 | 326 | if ((cmd->tf_flags & IDE_TFLAG_FS) == 0) { |
64a57fe4 | 327 | u8 err = ide_read_error(drive); |
1da177e4 | 328 | |
adb1af98 | 329 | ide_complete_cmd(drive, cmd, stat, err); |
a09485df | 330 | ide_complete_rq(drive, err); |
4d7a984b | 331 | return; |
1da177e4 LT |
332 | } |
333 | ||
adb1af98 | 334 | ide_end_request(drive, 1, cmd->rq->nr_sectors); |
1da177e4 LT |
335 | } |
336 | ||
6c3c3158 LT |
337 | /* |
338 | * We got an interrupt on a task_in case, but no errors and no DRQ. | |
339 | * | |
340 | * It might be a spurious irq (shared irq), but it might be a | |
341 | * command that had no output. | |
342 | */ | |
adb1af98 BZ |
343 | static ide_startstop_t task_in_unexpected(ide_drive_t *drive, |
344 | struct ide_cmd *cmd, u8 stat) | |
6c3c3158 LT |
345 | { |
346 | /* Command all done? */ | |
3a7d2484 | 347 | if (OK_STAT(stat, ATA_DRDY, ATA_BUSY)) { |
adb1af98 | 348 | ide_finish_cmd(drive, cmd, stat); |
6c3c3158 LT |
349 | return ide_stopped; |
350 | } | |
351 | ||
352 | /* Assume it was a spurious irq */ | |
353 | ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL); | |
354 | return ide_started; | |
355 | } | |
356 | ||
1da177e4 LT |
357 | /* |
358 | * Handler for command with PIO data-in phase (Read/Read Multiple). | |
359 | */ | |
f6e29e35 | 360 | static ide_startstop_t task_in_intr(ide_drive_t *drive) |
1da177e4 LT |
361 | { |
362 | ide_hwif_t *hwif = drive->hwif; | |
adb1af98 | 363 | struct ide_cmd *cmd = &drive->hwif->cmd; |
374e042c | 364 | u8 stat = hwif->tp_ops->read_status(hwif); |
1da177e4 | 365 | |
6c3c3158 | 366 | /* Error? */ |
3a7d2484 | 367 | if (stat & ATA_ERR) |
adb1af98 | 368 | return task_error(drive, cmd, __func__, stat); |
6c3c3158 LT |
369 | |
370 | /* Didn't want any data? Odd. */ | |
3a7d2484 | 371 | if ((stat & ATA_DRQ) == 0) |
adb1af98 | 372 | return task_in_unexpected(drive, cmd, stat); |
1da177e4 | 373 | |
adb1af98 | 374 | ide_pio_datablock(drive, cmd, 0); |
1da177e4 | 375 | |
6c3c3158 | 376 | /* Are we done? Check status and finish transfer. */ |
b6308ee0 | 377 | if (cmd->nleft == 0) { |
1da177e4 | 378 | stat = wait_drive_not_busy(drive); |
73d7de0c | 379 | if (!OK_STAT(stat, 0, BAD_STAT)) |
adb1af98 BZ |
380 | return task_error(drive, cmd, __func__, stat); |
381 | ide_finish_cmd(drive, cmd, stat); | |
1da177e4 LT |
382 | return ide_stopped; |
383 | } | |
384 | ||
385 | /* Still data left to transfer. */ | |
386 | ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL); | |
387 | ||
388 | return ide_started; | |
389 | } | |
1da177e4 LT |
390 | |
391 | /* | |
392 | * Handler for command with PIO data-out phase (Write/Write Multiple). | |
393 | */ | |
394 | static ide_startstop_t task_out_intr (ide_drive_t *drive) | |
395 | { | |
396 | ide_hwif_t *hwif = drive->hwif; | |
adb1af98 | 397 | struct ide_cmd *cmd = &drive->hwif->cmd; |
374e042c | 398 | u8 stat = hwif->tp_ops->read_status(hwif); |
1da177e4 LT |
399 | |
400 | if (!OK_STAT(stat, DRIVE_READY, drive->bad_wstat)) | |
adb1af98 | 401 | return task_error(drive, cmd, __func__, stat); |
1da177e4 LT |
402 | |
403 | /* Deal with unexpected ATA data phase. */ | |
b6308ee0 | 404 | if (((stat & ATA_DRQ) == 0) ^ (cmd->nleft == 0)) |
adb1af98 | 405 | return task_error(drive, cmd, __func__, stat); |
1da177e4 | 406 | |
b6308ee0 | 407 | if (cmd->nleft == 0) { |
adb1af98 | 408 | ide_finish_cmd(drive, cmd, stat); |
1da177e4 LT |
409 | return ide_stopped; |
410 | } | |
411 | ||
412 | /* Still data left to transfer. */ | |
adb1af98 | 413 | ide_pio_datablock(drive, cmd, 1); |
1da177e4 LT |
414 | ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL); |
415 | ||
416 | return ide_started; | |
417 | } | |
418 | ||
adb1af98 BZ |
419 | static ide_startstop_t pre_task_out_intr(ide_drive_t *drive, |
420 | struct ide_cmd *cmd) | |
1da177e4 LT |
421 | { |
422 | ide_startstop_t startstop; | |
423 | ||
3a7d2484 | 424 | if (ide_wait_stat(&startstop, drive, ATA_DRQ, |
1da177e4 LT |
425 | drive->bad_wstat, WAIT_DRQ)) { |
426 | printk(KERN_ERR "%s: no DRQ after issuing %sWRITE%s\n", | |
c7db966b | 427 | drive->name, |
22aa4b32 | 428 | cmd->data_phase == TASKFILE_MULTI_OUT ? "MULT" : "", |
97100fc8 | 429 | (drive->dev_flags & IDE_DFLAG_LBA48) ? "_EXT" : ""); |
1da177e4 LT |
430 | return startstop; |
431 | } | |
432 | ||
97100fc8 | 433 | if ((drive->dev_flags & IDE_DFLAG_UNMASK) == 0) |
1da177e4 LT |
434 | local_irq_disable(); |
435 | ||
436 | ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL); | |
adb1af98 | 437 | ide_pio_datablock(drive, cmd, 1); |
1da177e4 LT |
438 | |
439 | return ide_started; | |
440 | } | |
1da177e4 | 441 | |
22aa4b32 BZ |
442 | int ide_raw_taskfile(ide_drive_t *drive, struct ide_cmd *cmd, u8 *buf, |
443 | u16 nsect) | |
1da177e4 | 444 | { |
154ed280 FT |
445 | struct request *rq; |
446 | int error; | |
1da177e4 | 447 | |
154ed280 FT |
448 | rq = blk_get_request(drive->queue, READ, __GFP_WAIT); |
449 | rq->cmd_type = REQ_TYPE_ATA_TASKFILE; | |
450 | rq->buffer = buf; | |
1da177e4 LT |
451 | |
452 | /* | |
453 | * (ks) We transfer currently only whole sectors. | |
454 | * This is suffient for now. But, it would be great, | |
455 | * if we would find a solution to transfer any size. | |
456 | * To support special commands like READ LONG. | |
457 | */ | |
154ed280 FT |
458 | rq->hard_nr_sectors = rq->nr_sectors = nsect; |
459 | rq->hard_cur_sectors = rq->current_nr_sectors = nsect; | |
1da177e4 | 460 | |
22aa4b32 | 461 | if (cmd->tf_flags & IDE_TFLAG_WRITE) |
154ed280 | 462 | rq->cmd_flags |= REQ_RW; |
1da177e4 | 463 | |
22aa4b32 BZ |
464 | rq->special = cmd; |
465 | cmd->rq = rq; | |
1da177e4 | 466 | |
154ed280 FT |
467 | error = blk_execute_rq(drive->queue, NULL, rq, 0); |
468 | blk_put_request(rq); | |
469 | ||
470 | return error; | |
1da177e4 LT |
471 | } |
472 | ||
1da177e4 LT |
473 | EXPORT_SYMBOL(ide_raw_taskfile); |
474 | ||
22aa4b32 | 475 | int ide_no_data_taskfile(ide_drive_t *drive, struct ide_cmd *cmd) |
9a3c49be | 476 | { |
22aa4b32 | 477 | cmd->data_phase = TASKFILE_NO_DATA; |
9a3c49be | 478 | |
22aa4b32 | 479 | return ide_raw_taskfile(drive, cmd, NULL, 0); |
9a3c49be BZ |
480 | } |
481 | EXPORT_SYMBOL_GPL(ide_no_data_taskfile); | |
482 | ||
26a5b040 | 483 | #ifdef CONFIG_IDE_TASK_IOCTL |
22aa4b32 | 484 | int ide_taskfile_ioctl(ide_drive_t *drive, unsigned long arg) |
1da177e4 LT |
485 | { |
486 | ide_task_request_t *req_task; | |
22aa4b32 | 487 | struct ide_cmd cmd; |
1da177e4 LT |
488 | u8 *outbuf = NULL; |
489 | u8 *inbuf = NULL; | |
ac026ff2 | 490 | u8 *data_buf = NULL; |
1da177e4 LT |
491 | int err = 0; |
492 | int tasksize = sizeof(struct ide_task_request_s); | |
3a42bb22 AC |
493 | unsigned int taskin = 0; |
494 | unsigned int taskout = 0; | |
ac026ff2 | 495 | u16 nsect = 0; |
1da177e4 LT |
496 | char __user *buf = (char __user *)arg; |
497 | ||
498 | // printk("IDE Taskfile ...\n"); | |
499 | ||
f5e3c2fa | 500 | req_task = kzalloc(tasksize, GFP_KERNEL); |
1da177e4 | 501 | if (req_task == NULL) return -ENOMEM; |
1da177e4 LT |
502 | if (copy_from_user(req_task, buf, tasksize)) { |
503 | kfree(req_task); | |
504 | return -EFAULT; | |
505 | } | |
506 | ||
3a42bb22 AC |
507 | taskout = req_task->out_size; |
508 | taskin = req_task->in_size; | |
509 | ||
510 | if (taskin > 65536 || taskout > 65536) { | |
511 | err = -EINVAL; | |
512 | goto abort; | |
513 | } | |
1da177e4 LT |
514 | |
515 | if (taskout) { | |
516 | int outtotal = tasksize; | |
f5e3c2fa | 517 | outbuf = kzalloc(taskout, GFP_KERNEL); |
1da177e4 LT |
518 | if (outbuf == NULL) { |
519 | err = -ENOMEM; | |
520 | goto abort; | |
521 | } | |
1da177e4 LT |
522 | if (copy_from_user(outbuf, buf + outtotal, taskout)) { |
523 | err = -EFAULT; | |
524 | goto abort; | |
525 | } | |
526 | } | |
527 | ||
528 | if (taskin) { | |
529 | int intotal = tasksize + taskout; | |
f5e3c2fa | 530 | inbuf = kzalloc(taskin, GFP_KERNEL); |
1da177e4 LT |
531 | if (inbuf == NULL) { |
532 | err = -ENOMEM; | |
533 | goto abort; | |
534 | } | |
1da177e4 LT |
535 | if (copy_from_user(inbuf, buf + intotal, taskin)) { |
536 | err = -EFAULT; | |
537 | goto abort; | |
538 | } | |
539 | } | |
540 | ||
22aa4b32 | 541 | memset(&cmd, 0, sizeof(cmd)); |
1da177e4 | 542 | |
22aa4b32 BZ |
543 | memcpy(&cmd.tf_array[0], req_task->hob_ports, |
544 | HDIO_DRIVE_HOB_HDR_SIZE - 2); | |
545 | memcpy(&cmd.tf_array[6], req_task->io_ports, | |
546 | HDIO_DRIVE_TASK_HDR_SIZE); | |
866e2ec9 | 547 | |
22aa4b32 BZ |
548 | cmd.data_phase = req_task->data_phase; |
549 | cmd.tf_flags = IDE_TFLAG_IO_16BIT | IDE_TFLAG_DEVICE | | |
550 | IDE_TFLAG_IN_TF; | |
1da177e4 | 551 | |
97100fc8 | 552 | if (drive->dev_flags & IDE_DFLAG_LBA48) |
22aa4b32 | 553 | cmd.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_IN_HOB); |
a3bbb9d8 | 554 | |
74095a91 | 555 | if (req_task->out_flags.all) { |
22aa4b32 | 556 | cmd.ftf_flags |= IDE_FTFLAG_FLAGGED; |
74095a91 BZ |
557 | |
558 | if (req_task->out_flags.b.data) | |
22aa4b32 | 559 | cmd.ftf_flags |= IDE_FTFLAG_OUT_DATA; |
74095a91 BZ |
560 | |
561 | if (req_task->out_flags.b.nsector_hob) | |
22aa4b32 | 562 | cmd.tf_flags |= IDE_TFLAG_OUT_HOB_NSECT; |
74095a91 | 563 | if (req_task->out_flags.b.sector_hob) |
22aa4b32 | 564 | cmd.tf_flags |= IDE_TFLAG_OUT_HOB_LBAL; |
74095a91 | 565 | if (req_task->out_flags.b.lcyl_hob) |
22aa4b32 | 566 | cmd.tf_flags |= IDE_TFLAG_OUT_HOB_LBAM; |
74095a91 | 567 | if (req_task->out_flags.b.hcyl_hob) |
22aa4b32 | 568 | cmd.tf_flags |= IDE_TFLAG_OUT_HOB_LBAH; |
74095a91 BZ |
569 | |
570 | if (req_task->out_flags.b.error_feature) | |
22aa4b32 | 571 | cmd.tf_flags |= IDE_TFLAG_OUT_FEATURE; |
74095a91 | 572 | if (req_task->out_flags.b.nsector) |
22aa4b32 | 573 | cmd.tf_flags |= IDE_TFLAG_OUT_NSECT; |
74095a91 | 574 | if (req_task->out_flags.b.sector) |
22aa4b32 | 575 | cmd.tf_flags |= IDE_TFLAG_OUT_LBAL; |
74095a91 | 576 | if (req_task->out_flags.b.lcyl) |
22aa4b32 | 577 | cmd.tf_flags |= IDE_TFLAG_OUT_LBAM; |
74095a91 | 578 | if (req_task->out_flags.b.hcyl) |
22aa4b32 | 579 | cmd.tf_flags |= IDE_TFLAG_OUT_LBAH; |
a3bbb9d8 | 580 | } else { |
22aa4b32 BZ |
581 | cmd.tf_flags |= IDE_TFLAG_OUT_TF; |
582 | if (cmd.tf_flags & IDE_TFLAG_LBA48) | |
583 | cmd.tf_flags |= IDE_TFLAG_OUT_HOB; | |
74095a91 BZ |
584 | } |
585 | ||
866e2ec9 | 586 | if (req_task->in_flags.b.data) |
22aa4b32 | 587 | cmd.ftf_flags |= IDE_FTFLAG_IN_DATA; |
866e2ec9 | 588 | |
1da177e4 | 589 | switch(req_task->data_phase) { |
1da177e4 LT |
590 | case TASKFILE_MULTI_OUT: |
591 | if (!drive->mult_count) { | |
592 | /* (hs): give up if multcount is not set */ | |
593 | printk(KERN_ERR "%s: %s Multimode Write " \ | |
594 | "multcount is not set\n", | |
eb63963a | 595 | drive->name, __func__); |
1da177e4 LT |
596 | err = -EPERM; |
597 | goto abort; | |
598 | } | |
599 | /* fall through */ | |
600 | case TASKFILE_OUT: | |
ac026ff2 BZ |
601 | /* fall through */ |
602 | case TASKFILE_OUT_DMAQ: | |
603 | case TASKFILE_OUT_DMA: | |
604 | nsect = taskout / SECTOR_SIZE; | |
605 | data_buf = outbuf; | |
1da177e4 LT |
606 | break; |
607 | case TASKFILE_MULTI_IN: | |
608 | if (!drive->mult_count) { | |
609 | /* (hs): give up if multcount is not set */ | |
610 | printk(KERN_ERR "%s: %s Multimode Read failure " \ | |
611 | "multcount is not set\n", | |
eb63963a | 612 | drive->name, __func__); |
1da177e4 LT |
613 | err = -EPERM; |
614 | goto abort; | |
615 | } | |
616 | /* fall through */ | |
617 | case TASKFILE_IN: | |
ac026ff2 BZ |
618 | /* fall through */ |
619 | case TASKFILE_IN_DMAQ: | |
620 | case TASKFILE_IN_DMA: | |
621 | nsect = taskin / SECTOR_SIZE; | |
622 | data_buf = inbuf; | |
1da177e4 LT |
623 | break; |
624 | case TASKFILE_NO_DATA: | |
1da177e4 LT |
625 | break; |
626 | default: | |
627 | err = -EFAULT; | |
628 | goto abort; | |
629 | } | |
630 | ||
ac026ff2 BZ |
631 | if (req_task->req_cmd == IDE_DRIVE_TASK_NO_DATA) |
632 | nsect = 0; | |
633 | else if (!nsect) { | |
22aa4b32 | 634 | nsect = (cmd.tf.hob_nsect << 8) | cmd.tf.nsect; |
ac026ff2 BZ |
635 | |
636 | if (!nsect) { | |
637 | printk(KERN_ERR "%s: in/out command without data\n", | |
638 | drive->name); | |
639 | err = -EFAULT; | |
640 | goto abort; | |
641 | } | |
642 | } | |
643 | ||
644 | if (req_task->req_cmd == IDE_DRIVE_TASK_RAW_WRITE) | |
22aa4b32 | 645 | cmd.tf_flags |= IDE_TFLAG_WRITE; |
ac026ff2 | 646 | |
22aa4b32 | 647 | err = ide_raw_taskfile(drive, &cmd, data_buf, nsect); |
ac026ff2 | 648 | |
22aa4b32 BZ |
649 | memcpy(req_task->hob_ports, &cmd.tf_array[0], |
650 | HDIO_DRIVE_HOB_HDR_SIZE - 2); | |
651 | memcpy(req_task->io_ports, &cmd.tf_array[6], | |
652 | HDIO_DRIVE_TASK_HDR_SIZE); | |
866e2ec9 | 653 | |
22aa4b32 | 654 | if ((cmd.ftf_flags & IDE_FTFLAG_SET_IN_FLAGS) && |
866e2ec9 BZ |
655 | req_task->in_flags.all == 0) { |
656 | req_task->in_flags.all = IDE_TASKFILE_STD_IN_FLAGS; | |
97100fc8 | 657 | if (drive->dev_flags & IDE_DFLAG_LBA48) |
866e2ec9 BZ |
658 | req_task->in_flags.all |= (IDE_HOB_STD_IN_FLAGS << 8); |
659 | } | |
1da177e4 LT |
660 | |
661 | if (copy_to_user(buf, req_task, tasksize)) { | |
662 | err = -EFAULT; | |
663 | goto abort; | |
664 | } | |
665 | if (taskout) { | |
666 | int outtotal = tasksize; | |
667 | if (copy_to_user(buf + outtotal, outbuf, taskout)) { | |
668 | err = -EFAULT; | |
669 | goto abort; | |
670 | } | |
671 | } | |
672 | if (taskin) { | |
673 | int intotal = tasksize + taskout; | |
674 | if (copy_to_user(buf + intotal, inbuf, taskin)) { | |
675 | err = -EFAULT; | |
676 | goto abort; | |
677 | } | |
678 | } | |
679 | abort: | |
680 | kfree(req_task); | |
6044ec88 JJ |
681 | kfree(outbuf); |
682 | kfree(inbuf); | |
1da177e4 LT |
683 | |
684 | // printk("IDE Taskfile ioctl ended. rc = %i\n", err); | |
685 | ||
1da177e4 LT |
686 | return err; |
687 | } | |
26a5b040 | 688 | #endif |