2 * Copyright (c) 1998 - 2008 Søren Schmidt <sos@FreeBSD.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer,
10 * without modification, immediately at the beginning of the file.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
31 #include <sys/param.h>
32 #include <sys/systm.h>
33 #include <sys/kernel.h>
34 #include <sys/endian.h>
37 #include <sys/ctype.h>
40 #include <sys/taskqueue.h>
42 #include <machine/bus.h>
44 #include <dev/ata/ata-all.h>
45 #include <dev/ata/ata-pci.h>
49 static int ata_generic_status(device_t dev);
50 static int ata_wait(struct ata_channel *ch, struct ata_device *, u_int8_t);
51 static void ata_pio_read(struct ata_request *, int);
52 static void ata_pio_write(struct ata_request *, int);
53 static void ata_tf_read(struct ata_request *);
54 static void ata_tf_write(struct ata_request *);
57 * low level ATA functions
60 ata_generic_hw(device_t dev)
62 struct ata_channel *ch = device_get_softc(dev);
64 ch->hw.begin_transaction = ata_begin_transaction;
65 ch->hw.end_transaction = ata_end_transaction;
66 ch->hw.status = ata_generic_status;
67 ch->hw.softreset = NULL;
68 ch->hw.command = ata_generic_command;
69 ch->hw.tf_read = ata_tf_read;
70 ch->hw.tf_write = ata_tf_write;
71 ch->hw.pm_read = NULL;
72 ch->hw.pm_write = NULL;
75 /* must be called with ATA channel locked and state_mtx held */
77 ata_begin_transaction(struct ata_request *request)
79 struct ata_channel *ch = device_get_softc(request->parent);
80 struct ata_device *atadev = device_get_softc(request->dev);
83 ATA_DEBUG_RQ(request, "begin transaction");
85 /* disable ATAPI DMA writes if HW doesn't support it */
86 if ((ch->flags & ATA_ATAPI_DMA_RO) &&
87 ((request->flags & (ATA_R_ATAPI | ATA_R_DMA | ATA_R_WRITE)) ==
88 (ATA_R_ATAPI | ATA_R_DMA | ATA_R_WRITE)))
89 request->flags &= ~ATA_R_DMA;
91 /* check for 48 bit access and convert if needed */
92 ata_modify_if_48bit(request);
94 switch (request->flags & (ATA_R_ATAPI | ATA_R_DMA)) {
96 /* ATA PIO data transfer and control commands */
99 /* record command direction here as our request might be gone later */
100 int write = (request->flags & ATA_R_WRITE);
103 if (ch->hw.command(request)) {
104 device_printf(request->dev, "error issuing %s command\n",
105 ata_cmd2str(request));
106 request->result = EIO;
110 /* device reset doesn't interrupt */
111 if (request->u.ata.command == ATA_DEVICE_RESET) {
113 int timeout = 1000000;
116 request->status = ATA_IDX_INB(ch, ATA_STATUS);
117 } while (request->status & ATA_S_BUSY && timeout--);
118 if (request->status & ATA_S_ERROR)
119 request->error = ATA_IDX_INB(ch, ATA_ERROR);
123 /* if write command output the data */
125 if (ata_wait(ch, atadev, (ATA_S_READY | ATA_S_DRQ)) < 0) {
126 device_printf(request->dev,
127 "timeout waiting for write DRQ\n");
128 request->result = EIO;
131 ata_pio_write(request, request->transfersize);
136 /* ATA DMA data transfer commands */
138 /* check sanity, setup SG list and DMA engine */
139 if ((error = ch->dma.load(request, NULL, &dummy))) {
140 device_printf(request->dev, "setting up DMA failed\n");
141 request->result = error;
146 if (ch->hw.command(request)) {
147 device_printf(request->dev, "error issuing %s command\n",
148 ata_cmd2str(request));
149 request->result = EIO;
153 /* start DMA engine */
154 if (ch->dma.start && ch->dma.start(request)) {
155 device_printf(request->dev, "error starting DMA\n");
156 request->result = EIO;
161 /* ATAPI PIO commands */
163 /* is this just a POLL DSC command ? */
164 if (request->u.atapi.ccb[0] == ATAPI_POLL_DSC) {
165 ATA_IDX_OUTB(ch, ATA_DRIVE, ATA_D_IBM | ATA_DEV(atadev->unit));
167 if (!(ATA_IDX_INB(ch, ATA_ALTSTAT) & ATA_S_DSC))
168 request->result = EBUSY;
172 /* start ATAPI operation */
173 if (ch->hw.command(request)) {
174 device_printf(request->dev, "error issuing ATA PACKET command\n");
175 request->result = EIO;
180 /* ATAPI DMA commands */
181 case ATA_R_ATAPI|ATA_R_DMA:
182 /* is this just a POLL DSC command ? */
183 if (request->u.atapi.ccb[0] == ATAPI_POLL_DSC) {
184 ATA_IDX_OUTB(ch, ATA_DRIVE, ATA_D_IBM | ATA_DEV(atadev->unit));
186 if (!(ATA_IDX_INB(ch, ATA_ALTSTAT) & ATA_S_DSC))
187 request->result = EBUSY;
191 /* check sanity, setup SG list and DMA engine */
192 if ((error = ch->dma.load(request, NULL, &dummy))) {
193 device_printf(request->dev, "setting up DMA failed\n");
194 request->result = error;
198 /* start ATAPI operation */
199 if (ch->hw.command(request)) {
200 device_printf(request->dev, "error issuing ATA PACKET command\n");
201 request->result = EIO;
205 /* start DMA engine */
206 if (ch->dma.start && ch->dma.start(request)) {
207 request->result = EIO;
213 printf("ata_begin_transaction OOPS!!!\n");
216 if (ch->dma.unload) {
217 ch->dma.unload(request);
219 return ATA_OP_FINISHED;
222 callout_reset(&request->callout, request->timeout * hz,
223 (timeout_t*)ata_timeout, request);
224 return ATA_OP_CONTINUES;
227 /* must be called with ATA channel locked and state_mtx held */
229 ata_end_transaction(struct ata_request *request)
231 struct ata_channel *ch = device_get_softc(request->parent);
232 struct ata_device *atadev = device_get_softc(request->dev);
235 ATA_DEBUG_RQ(request, "end transaction");
237 /* clear interrupt and get status */
238 request->status = ATA_IDX_INB(ch, ATA_STATUS);
240 switch (request->flags & (ATA_R_ATAPI | ATA_R_DMA | ATA_R_CONTROL)) {
242 /* ATA PIO data transfer and control commands */
245 /* on timeouts we have no data or anything so just return */
246 if (request->flags & ATA_R_TIMEOUT)
249 /* on control commands read back registers to the request struct */
250 if (request->flags & ATA_R_CONTROL) {
251 ch->hw.tf_read(request);
254 /* if we got an error we are done with the HW */
255 if (request->status & ATA_S_ERROR) {
256 request->error = ATA_IDX_INB(ch, ATA_ERROR);
260 /* are we moving data ? */
261 if (request->flags & (ATA_R_READ | ATA_R_WRITE)) {
263 /* if read data get it */
264 if (request->flags & ATA_R_READ) {
265 int flags = ATA_S_DRQ;
267 if (request->u.ata.command != ATA_ATAPI_IDENTIFY)
268 flags |= ATA_S_READY;
269 if (ata_wait(ch, atadev, flags) < 0) {
270 device_printf(request->dev,
271 "timeout waiting for read DRQ\n");
272 request->result = EIO;
275 ata_pio_read(request, request->transfersize);
278 /* update how far we've gotten */
279 request->donecount += request->transfersize;
281 /* do we need a scoop more ? */
282 if (request->bytecount > request->donecount) {
284 /* set this transfer size according to HW capabilities */
285 request->transfersize =
286 min((request->bytecount - request->donecount),
287 request->transfersize);
289 /* if data write command, output the data */
290 if (request->flags & ATA_R_WRITE) {
292 /* if we get an error here we are done with the HW */
293 if (ata_wait(ch, atadev, (ATA_S_READY | ATA_S_DRQ)) < 0) {
294 device_printf(request->dev,
295 "timeout waiting for write DRQ\n");
296 request->status = ATA_IDX_INB(ch, ATA_STATUS);
300 /* output data and return waiting for new interrupt */
301 ata_pio_write(request, request->transfersize);
305 /* if data read command, return & wait for interrupt */
306 if (request->flags & ATA_R_READ)
313 /* ATA DMA data transfer commands */
316 /* stop DMA engine and get status */
318 request->dma->status = ch->dma.stop(request);
320 /* did we get error or data */
321 if (request->status & ATA_S_ERROR)
322 request->error = ATA_IDX_INB(ch, ATA_ERROR);
323 else if (request->dma->status & ATA_BMSTAT_ERROR)
324 request->status |= ATA_S_ERROR;
325 else if (!(request->flags & ATA_R_TIMEOUT))
326 request->donecount = request->bytecount;
328 /* release SG list etc */
329 ch->dma.unload(request);
334 /* ATAPI PIO commands */
336 length = ATA_IDX_INB(ch, ATA_CYL_LSB)|(ATA_IDX_INB(ch, ATA_CYL_MSB)<<8);
338 /* on timeouts we have no data or anything so just return */
339 if (request->flags & ATA_R_TIMEOUT)
342 switch ((ATA_IDX_INB(ch, ATA_IREASON) & (ATA_I_CMD | ATA_I_IN)) |
343 (request->status & ATA_S_DRQ)) {
346 /* this seems to be needed for some (slow) devices */
349 if (!(request->status & ATA_S_DRQ)) {
350 device_printf(request->dev, "command interrupt without DRQ\n");
351 request->status = ATA_S_ERROR;
354 ATA_IDX_OUTSW_STRM(ch, ATA_DATA, (int16_t *)request->u.atapi.ccb,
355 (atadev->param.config &
356 ATA_PROTO_MASK)== ATA_PROTO_ATAPI_12 ? 6 : 8);
357 /* return wait for interrupt */
361 if (request->flags & ATA_R_READ) {
362 request->status = ATA_S_ERROR;
363 device_printf(request->dev,
364 "%s trying to write on read buffer\n",
365 ata_cmd2str(request));
369 ata_pio_write(request, length);
370 request->donecount += length;
372 /* set next transfer size according to HW capabilities */
373 request->transfersize = min((request->bytecount-request->donecount),
374 request->transfersize);
375 /* return wait for interrupt */
379 if (request->flags & ATA_R_WRITE) {
380 request->status = ATA_S_ERROR;
381 device_printf(request->dev,
382 "%s trying to read on write buffer\n",
383 ata_cmd2str(request));
386 ata_pio_read(request, length);
387 request->donecount += length;
389 /* set next transfer size according to HW capabilities */
390 request->transfersize = min((request->bytecount-request->donecount),
391 request->transfersize);
392 /* return wait for interrupt */
395 case ATAPI_P_DONEDRQ:
396 device_printf(request->dev,
397 "WARNING - %s DONEDRQ non conformant device\n",
398 ata_cmd2str(request));
399 if (request->flags & ATA_R_READ) {
400 ata_pio_read(request, length);
401 request->donecount += length;
403 else if (request->flags & ATA_R_WRITE) {
404 ata_pio_write(request, length);
405 request->donecount += length;
408 request->status = ATA_S_ERROR;
413 if (request->status & (ATA_S_ERROR | ATA_S_DWF))
414 request->error = ATA_IDX_INB(ch, ATA_ERROR);
418 device_printf(request->dev, "unknown transfer phase\n");
419 request->status = ATA_S_ERROR;
425 /* ATAPI DMA commands */
426 case ATA_R_ATAPI|ATA_R_DMA:
428 /* stop DMA engine and get status */
430 request->dma->status = ch->dma.stop(request);
432 /* did we get error or data */
433 if (request->status & (ATA_S_ERROR | ATA_S_DWF))
434 request->error = ATA_IDX_INB(ch, ATA_ERROR);
435 else if (request->dma->status & ATA_BMSTAT_ERROR)
436 request->status |= ATA_S_ERROR;
437 else if (!(request->flags & ATA_R_TIMEOUT))
438 request->donecount = request->bytecount;
440 /* release SG list etc */
441 ch->dma.unload(request);
447 printf("ata_end_transaction OOPS!!\n");
450 callout_stop(&request->callout);
451 return ATA_OP_FINISHED;
454 return ATA_OP_CONTINUES;
457 /* must be called with ATA channel locked and state_mtx held */
459 ata_generic_reset(device_t dev)
461 struct ata_channel *ch = device_get_softc(dev);
463 u_int8_t ostat0 = 0, stat0 = 0, ostat1 = 0, stat1 = 0;
464 u_int8_t err = 0, lsb = 0, msb = 0;
465 int mask = 0, timeout;
467 /* do we have any signs of ATA/ATAPI HW being present ? */
468 ATA_IDX_OUTB(ch, ATA_DRIVE, ATA_D_IBM | ATA_D_LBA | ATA_DEV(ATA_MASTER));
470 ostat0 = ATA_IDX_INB(ch, ATA_STATUS);
471 if ((ostat0 & 0xf8) != 0xf8 && ostat0 != 0xa5) {
476 /* in some setups we dont want to test for a slave */
477 if (!(ch->flags & ATA_NO_SLAVE)) {
478 ATA_IDX_OUTB(ch, ATA_DRIVE, ATA_D_IBM | ATA_D_LBA | ATA_DEV(ATA_SLAVE));
480 ostat1 = ATA_IDX_INB(ch, ATA_STATUS);
481 if ((ostat1 & 0xf8) != 0xf8 && ostat1 != 0xa5) {
488 device_printf(dev, "reset tp1 mask=%02x ostat0=%02x ostat1=%02x\n",
489 mask, ostat0, ostat1);
491 /* if nothing showed up there is no need to get any further */
492 /* XXX SOS is that too strong?, we just might loose devices here */
497 /* reset (both) devices on this channel */
498 ATA_IDX_OUTB(ch, ATA_DRIVE, ATA_D_IBM | ATA_D_LBA | ATA_DEV(ATA_MASTER));
500 ATA_IDX_OUTB(ch, ATA_CONTROL, ATA_A_IDS | ATA_A_RESET);
502 ATA_IDX_OUTB(ch, ATA_CONTROL, ATA_A_IDS);
504 ATA_IDX_INB(ch, ATA_ERROR);
506 /* wait for BUSY to go inactive */
507 for (timeout = 0; timeout < 310; timeout++) {
508 if ((mask & 0x01) && (stat0 & ATA_S_BUSY)) {
509 ATA_IDX_OUTB(ch, ATA_DRIVE, ATA_D_IBM | ATA_DEV(ATA_MASTER));
511 err = ATA_IDX_INB(ch, ATA_ERROR);
512 lsb = ATA_IDX_INB(ch, ATA_CYL_LSB);
513 msb = ATA_IDX_INB(ch, ATA_CYL_MSB);
514 stat0 = ATA_IDX_INB(ch, ATA_STATUS);
517 "stat0=0x%02x err=0x%02x lsb=0x%02x msb=0x%02x\n",
518 stat0, err, lsb, msb);
519 if (stat0 == err && lsb == err && msb == err &&
520 timeout > (stat0 & ATA_S_BUSY ? 100 : 10))
522 if (!(stat0 & ATA_S_BUSY)) {
523 if ((err & 0x7f) == ATA_E_ILI) {
524 if (lsb == ATAPI_MAGIC_LSB && msb == ATAPI_MAGIC_MSB) {
525 ch->devices |= ATA_ATAPI_MASTER;
527 else if (stat0 & ATA_S_READY) {
528 ch->devices |= ATA_ATA_MASTER;
531 else if ((stat0 & 0x0f) && err == lsb && err == msb) {
537 if ((mask & 0x02) && (stat1 & ATA_S_BUSY) &&
538 !((mask & 0x01) && (stat0 & ATA_S_BUSY))) {
539 ATA_IDX_OUTB(ch, ATA_DRIVE, ATA_D_IBM | ATA_DEV(ATA_SLAVE));
541 err = ATA_IDX_INB(ch, ATA_ERROR);
542 lsb = ATA_IDX_INB(ch, ATA_CYL_LSB);
543 msb = ATA_IDX_INB(ch, ATA_CYL_MSB);
544 stat1 = ATA_IDX_INB(ch, ATA_STATUS);
547 "stat1=0x%02x err=0x%02x lsb=0x%02x msb=0x%02x\n",
548 stat1, err, lsb, msb);
549 if (stat1 == err && lsb == err && msb == err &&
550 timeout > (stat1 & ATA_S_BUSY ? 100 : 10))
552 if (!(stat1 & ATA_S_BUSY)) {
553 if ((err & 0x7f) == ATA_E_ILI) {
554 if (lsb == ATAPI_MAGIC_LSB && msb == ATAPI_MAGIC_MSB) {
555 ch->devices |= ATA_ATAPI_SLAVE;
557 else if (stat1 & ATA_S_READY) {
558 ch->devices |= ATA_ATA_SLAVE;
561 else if ((stat1 & 0x0f) && err == lsb && err == msb) {
567 if (mask == 0x00) /* nothing to wait for */
569 if (mask == 0x01) /* wait for master only */
570 if (!(stat0 & ATA_S_BUSY) || (stat0 == 0xff && timeout > 10))
572 if (mask == 0x02) /* wait for slave only */
573 if (!(stat1 & ATA_S_BUSY) || (stat1 == 0xff && timeout > 10))
575 if (mask == 0x03) { /* wait for both master & slave */
576 if (!(stat0 & ATA_S_BUSY) && !(stat1 & ATA_S_BUSY))
578 if ((stat0 == 0xff) && (timeout > 20))
580 if ((stat1 == 0xff) && (timeout > 20))
587 device_printf(dev, "reset tp2 stat0=%02x stat1=%02x devices=0x%x\n",
588 stat0, stat1, ch->devices);
591 /* must be called with ATA channel locked and state_mtx held */
593 ata_generic_status(device_t dev)
595 struct ata_channel *ch = device_get_softc(dev);
597 if (ATA_IDX_INB(ch, ATA_ALTSTAT) & ATA_S_BUSY) {
599 if (ATA_IDX_INB(ch, ATA_ALTSTAT) & ATA_S_BUSY)
606 ata_wait(struct ata_channel *ch, struct ata_device *atadev, u_int8_t mask)
613 /* wait at max 1 second for device to get !BUSY */
614 while (timeout < 1000000) {
615 status = ATA_IDX_INB(ch, ATA_ALTSTAT);
617 /* if drive fails status, reselect the drive and try again */
618 if (status == 0xff) {
619 ATA_IDX_OUTB(ch, ATA_DRIVE, ATA_D_IBM | ATA_DEV(atadev->unit));
626 if (!(status & ATA_S_BUSY))
629 if (timeout > 1000) {
638 if (timeout >= 1000000)
641 return (status & ATA_S_ERROR);
645 /* wait 50 msec for bits wanted */
648 status = ATA_IDX_INB(ch, ATA_ALTSTAT);
649 if ((status & mask) == mask)
650 return (status & ATA_S_ERROR);
657 ata_generic_command(struct ata_request *request)
659 struct ata_channel *ch = device_get_softc(request->parent);
660 struct ata_device *atadev = device_get_softc(request->dev);
663 ATA_IDX_OUTB(ch, ATA_DRIVE, ATA_D_IBM | ATA_D_LBA | ATA_DEV(atadev->unit));
665 /* ready to issue command ? */
666 if (ata_wait(ch, atadev, 0) < 0) {
667 device_printf(request->dev, "timeout waiting to issue command\n");
671 /* enable interrupt */
672 ATA_IDX_OUTB(ch, ATA_CONTROL, ATA_A_4BIT);
674 if (request->flags & ATA_R_ATAPI) {
677 /* issue packet command to controller */
678 if (request->flags & ATA_R_DMA) {
679 ATA_IDX_OUTB(ch, ATA_FEATURE, ATA_F_DMA);
680 ATA_IDX_OUTB(ch, ATA_CYL_LSB, 0);
681 ATA_IDX_OUTB(ch, ATA_CYL_MSB, 0);
684 ATA_IDX_OUTB(ch, ATA_FEATURE, 0);
685 ATA_IDX_OUTB(ch, ATA_CYL_LSB, request->transfersize);
686 ATA_IDX_OUTB(ch, ATA_CYL_MSB, request->transfersize >> 8);
688 ATA_IDX_OUTB(ch, ATA_COMMAND, ATA_PACKET_CMD);
690 /* command interrupt device ? just return and wait for interrupt */
691 if ((atadev->param.config & ATA_DRQ_MASK) == ATA_DRQ_INTR)
694 /* wait for ready to write ATAPI command block */
696 int reason = ATA_IDX_INB(ch, ATA_IREASON);
697 int status = ATA_IDX_INB(ch, ATA_STATUS);
699 if (((reason & (ATA_I_CMD | ATA_I_IN)) |
700 (status & (ATA_S_DRQ | ATA_S_BUSY))) == ATAPI_P_CMDOUT)
705 device_printf(request->dev, "timeout waiting for ATAPI ready\n");
706 request->result = EIO;
710 /* this seems to be needed for some (slow) devices */
713 /* output command block */
714 ATA_IDX_OUTSW_STRM(ch, ATA_DATA, (int16_t *)request->u.atapi.ccb,
715 (atadev->param.config & ATA_PROTO_MASK) ==
716 ATA_PROTO_ATAPI_12 ? 6 : 8);
719 ch->hw.tf_write(request);
721 /* issue command to controller */
722 ATA_IDX_OUTB(ch, ATA_COMMAND, request->u.ata.command);
728 ata_tf_read(struct ata_request *request)
730 struct ata_channel *ch = device_get_softc(request->parent);
731 struct ata_device *atadev = device_get_softc(request->dev);
733 if (atadev->flags & ATA_D_48BIT_ACTIVE) {
734 ATA_IDX_OUTB(ch, ATA_CONTROL, ATA_A_4BIT | ATA_A_HOB);
735 request->u.ata.count = (ATA_IDX_INB(ch, ATA_COUNT) << 8);
737 ((u_int64_t)(ATA_IDX_INB(ch, ATA_SECTOR)) << 24) |
738 ((u_int64_t)(ATA_IDX_INB(ch, ATA_CYL_LSB)) << 32) |
739 ((u_int64_t)(ATA_IDX_INB(ch, ATA_CYL_MSB)) << 40);
741 ATA_IDX_OUTB(ch, ATA_CONTROL, ATA_A_4BIT);
742 request->u.ata.count |= ATA_IDX_INB(ch, ATA_COUNT);
743 request->u.ata.lba |=
744 (ATA_IDX_INB(ch, ATA_SECTOR) |
745 (ATA_IDX_INB(ch, ATA_CYL_LSB) << 8) |
746 (ATA_IDX_INB(ch, ATA_CYL_MSB) << 16));
749 request->u.ata.count = ATA_IDX_INB(ch, ATA_COUNT);
750 request->u.ata.lba = ATA_IDX_INB(ch, ATA_SECTOR) |
751 (ATA_IDX_INB(ch, ATA_CYL_LSB) << 8) |
752 (ATA_IDX_INB(ch, ATA_CYL_MSB) << 16) |
753 ((ATA_IDX_INB(ch, ATA_DRIVE) & 0xf) << 24);
758 ata_tf_write(struct ata_request *request)
760 struct ata_channel *ch = device_get_softc(request->parent);
761 struct ata_device *atadev = device_get_softc(request->dev);
763 if (atadev->flags & ATA_D_48BIT_ACTIVE) {
764 ATA_IDX_OUTB(ch, ATA_FEATURE, request->u.ata.feature >> 8);
765 ATA_IDX_OUTB(ch, ATA_FEATURE, request->u.ata.feature);
766 ATA_IDX_OUTB(ch, ATA_COUNT, request->u.ata.count >> 8);
767 ATA_IDX_OUTB(ch, ATA_COUNT, request->u.ata.count);
768 ATA_IDX_OUTB(ch, ATA_SECTOR, request->u.ata.lba >> 24);
769 ATA_IDX_OUTB(ch, ATA_SECTOR, request->u.ata.lba);
770 ATA_IDX_OUTB(ch, ATA_CYL_LSB, request->u.ata.lba >> 32);
771 ATA_IDX_OUTB(ch, ATA_CYL_LSB, request->u.ata.lba >> 8);
772 ATA_IDX_OUTB(ch, ATA_CYL_MSB, request->u.ata.lba >> 40);
773 ATA_IDX_OUTB(ch, ATA_CYL_MSB, request->u.ata.lba >> 16);
774 ATA_IDX_OUTB(ch, ATA_DRIVE, ATA_D_LBA | ATA_DEV(atadev->unit));
777 ATA_IDX_OUTB(ch, ATA_FEATURE, request->u.ata.feature);
778 ATA_IDX_OUTB(ch, ATA_COUNT, request->u.ata.count);
779 if (atadev->flags & ATA_D_USE_CHS) {
782 if (atadev->param.atavalid & ATA_FLAG_54_58) {
783 heads = atadev->param.current_heads;
784 sectors = atadev->param.current_sectors;
787 heads = atadev->param.heads;
788 sectors = atadev->param.sectors;
791 ATA_IDX_OUTB(ch, ATA_SECTOR, (request->u.ata.lba % sectors)+1);
792 ATA_IDX_OUTB(ch, ATA_CYL_LSB,
793 (request->u.ata.lba / (sectors * heads)));
794 ATA_IDX_OUTB(ch, ATA_CYL_MSB,
795 (request->u.ata.lba / (sectors * heads)) >> 8);
796 ATA_IDX_OUTB(ch, ATA_DRIVE, ATA_D_IBM | ATA_DEV(atadev->unit) |
797 (((request->u.ata.lba% (sectors * heads)) /
801 ATA_IDX_OUTB(ch, ATA_SECTOR, request->u.ata.lba);
802 ATA_IDX_OUTB(ch, ATA_CYL_LSB, request->u.ata.lba >> 8);
803 ATA_IDX_OUTB(ch, ATA_CYL_MSB, request->u.ata.lba >> 16);
804 ATA_IDX_OUTB(ch, ATA_DRIVE,
805 ATA_D_IBM | ATA_D_LBA | ATA_DEV(atadev->unit) |
806 ((request->u.ata.lba >> 24) & 0x0f));
812 ata_pio_read(struct ata_request *request, int length)
814 struct ata_channel *ch = device_get_softc(request->parent);
815 int size = min(request->transfersize, length);
818 if (ch->flags & ATA_USE_16BIT || (size % sizeof(int32_t)))
819 ATA_IDX_INSW_STRM(ch, ATA_DATA,
820 (void*)((uintptr_t)request->data+request->donecount),
821 size / sizeof(int16_t));
823 ATA_IDX_INSL_STRM(ch, ATA_DATA,
824 (void*)((uintptr_t)request->data+request->donecount),
825 size / sizeof(int32_t));
827 if (request->transfersize < length) {
828 device_printf(request->dev, "WARNING - %s read data overrun %d>%d\n",
829 ata_cmd2str(request), length, request->transfersize);
830 for (resid = request->transfersize; resid < length;
831 resid += sizeof(int16_t))
832 ATA_IDX_INW(ch, ATA_DATA);
837 ata_pio_write(struct ata_request *request, int length)
839 struct ata_channel *ch = device_get_softc(request->parent);
840 int size = min(request->transfersize, length);
843 if (ch->flags & ATA_USE_16BIT || (size % sizeof(int32_t)))
844 ATA_IDX_OUTSW_STRM(ch, ATA_DATA,
845 (void*)((uintptr_t)request->data+request->donecount),
846 size / sizeof(int16_t));
848 ATA_IDX_OUTSL_STRM(ch, ATA_DATA,
849 (void*)((uintptr_t)request->data+request->donecount),
850 size / sizeof(int32_t));
852 if (request->transfersize < length) {
853 device_printf(request->dev, "WARNING - %s write data underrun %d>%d\n",
854 ata_cmd2str(request), length, request->transfersize);
855 for (resid = request->transfersize; resid < length;
856 resid += sizeof(int16_t))
857 ATA_IDX_OUTW(ch, ATA_DATA, 0);