1 // SPDX-License-Identifier: GPL-2.0-only
11 	ide_hwif_t *hwif = drive->hwif;  in ide_ata_error()
14 	    ((stat & ATA_DF) && (drive->dev_flags & IDE_DFLAG_NOWERR) == 0)) {  in ide_ata_error()
16 		scsi_req(rq)->result |= ERROR_RESET;  in ide_ata_error()
20 			if ((drive->dev_flags & IDE_DFLAG_LBA) &&  in ide_ata_error()
22 			    hwif->tp_ops->read_status(hwif) == ATA_CMD_INIT_DEV_PARAMS)  in ide_ata_error()
26 			drive->crc_count++;  in ide_ata_error()
29 			scsi_req(rq)->result = ERROR_MAX;  in ide_ata_error()
32 			scsi_req(rq)->result |= ERROR_RECAL;  in ide_ata_error()
37 	    (hwif->host_flags & IDE_HFLAG_ERROR_STOPS_FIFO) == 0) {  in ide_ata_error()
38 		int nsect = drive->mult_count ? drive->mult_count : 1;  in ide_ata_error()
43 	if (scsi_req(rq)->result >= ERROR_MAX || blk_noretry_request(rq)) {  in ide_ata_error()
48 	if (hwif->tp_ops->read_status(hwif) & (ATA_BUSY | ATA_DRQ))  in ide_ata_error()
49 		scsi_req(rq)->result |= ERROR_RESET;  in ide_ata_error()
51 	if ((scsi_req(rq)->result & ERROR_RESET) == ERROR_RESET) {  in ide_ata_error()
52 		++scsi_req(rq)->result;  in ide_ata_error()
56 	if ((scsi_req(rq)->result & ERROR_RECAL) == ERROR_RECAL)  in ide_ata_error()
57 		drive->special_flags |= IDE_SFLAG_RECALIBRATE;  in ide_ata_error()
59 	++scsi_req(rq)->result;  in ide_ata_error()
67 	ide_hwif_t *hwif = drive->hwif;  in ide_atapi_error()
70 	    ((stat & ATA_DF) && (drive->dev_flags & IDE_DFLAG_NOWERR) == 0)) {  in ide_atapi_error()
72 		scsi_req(rq)->result |= ERROR_RESET;  in ide_atapi_error()
77 	if (hwif->tp_ops->read_status(hwif) & (ATA_BUSY | ATA_DRQ))  in ide_atapi_error()
79 		hwif->tp_ops->exec_command(hwif, ATA_CMD_IDLEIMMEDIATE);  in ide_atapi_error()
81 	if (scsi_req(rq)->result >= ERROR_MAX) {  in ide_atapi_error()
84 		if ((scsi_req(rq)->result & ERROR_RESET) == ERROR_RESET) {  in ide_atapi_error()
85 			++scsi_req(rq)->result;  in ide_atapi_error()
88 		++scsi_req(rq)->result;  in ide_atapi_error()
97 	if (drive->media == ide_disk)  in __ide_error()
103  *	ide_error	-	handle an error on the IDE
110  *	both new-style (taskfile) and old style command handling here.
122 	rq = drive->hwif->rq;  in ide_error()
129 			struct ide_cmd *cmd = ide_req(rq)->special;  in ide_error()
134 			scsi_req(rq)->result = 1;  in ide_error()
138 		scsi_req(rq)->result = err;  in ide_error()
149 	struct request *rq = drive->hwif->rq;  in ide_complete_drive_reset()
152 	    scsi_req(rq)->cmd[0] == REQ_DRIVE_RESET) {  in ide_complete_drive_reset()
153 		if (err <= 0 && scsi_req(rq)->result == 0)  in ide_complete_drive_reset()
154 			scsi_req(rq)->result = -EIO;  in ide_complete_drive_reset()
164  * every 50ms during an atapi drive reset operation.  If the drive has not yet
166  * is restarted for another 50ms.
170 	ide_hwif_t *hwif = drive->hwif;  in atapi_reset_pollfunc()
171 	const struct ide_tp_ops *tp_ops = hwif->tp_ops;  in atapi_reset_pollfunc()
174 	tp_ops->dev_select(drive);  in atapi_reset_pollfunc()
176 	stat = tp_ops->read_status(hwif);  in atapi_reset_pollfunc()
179 		printk(KERN_INFO "%s: ATAPI reset complete\n", drive->name);  in atapi_reset_pollfunc()
181 		if (time_before(jiffies, hwif->poll_timeout)) {  in atapi_reset_pollfunc()
187 		hwif->polling = 0;  in atapi_reset_pollfunc()
188 		printk(KERN_ERR "%s: ATAPI reset timed-out, status=0x%02x\n",  in atapi_reset_pollfunc()
189 			drive->name, stat);  in atapi_reset_pollfunc()
194 	hwif->polling = 0;  in atapi_reset_pollfunc()
208 	printk(KERN_ERR "%s: reset: master: ", hwif->name);  in ide_reset_report_error()
219  * reset_pollfunc() gets invoked to poll the interface for completion every 50ms
222  * for another 50ms.
226 	ide_hwif_t *hwif = drive->hwif;  in reset_pollfunc()
227 	const struct ide_port_ops *port_ops = hwif->port_ops;  in reset_pollfunc()
231 	if (port_ops && port_ops->reset_poll) {  in reset_pollfunc()
232 		err = port_ops->reset_poll(drive);  in reset_pollfunc()
235 				hwif->name, drive->name);  in reset_pollfunc()
240 	tmp = hwif->tp_ops->read_status(hwif);  in reset_pollfunc()
243 		if (time_before(jiffies, hwif->poll_timeout)) {  in reset_pollfunc()
248 		printk(KERN_ERR "%s: reset timed-out, status=0x%02x\n",  in reset_pollfunc()
249 			hwif->name, tmp);  in reset_pollfunc()
250 		drive->failures++;  in reset_pollfunc()
256 			printk(KERN_INFO "%s: reset: success\n", hwif->name);  in reset_pollfunc()
257 			drive->failures = 0;  in reset_pollfunc()
260 			drive->failures++;  in reset_pollfunc()
265 	hwif->polling = 0;	/* done polling */  in reset_pollfunc()
272 	int legacy = (drive->id[ATA_ID_CFS_ENABLE_2] & 0x0400) ? 0 : 1;  in ide_disk_pre_reset()
274 	drive->special_flags =  in ide_disk_pre_reset()
277 	drive->mult_count = 0;  in ide_disk_pre_reset()
278 	drive->dev_flags &= ~IDE_DFLAG_PARKED;  in ide_disk_pre_reset()
280 	if ((drive->dev_flags & IDE_DFLAG_KEEP_SETTINGS) == 0 &&  in ide_disk_pre_reset()
281 	    (drive->dev_flags & IDE_DFLAG_USING_DMA) == 0)  in ide_disk_pre_reset()
282 		drive->mult_req = 0;  in ide_disk_pre_reset()
284 	if (drive->mult_req != drive->mult_count)  in ide_disk_pre_reset()
285 		drive->special_flags |= IDE_SFLAG_SET_MULTMODE;  in ide_disk_pre_reset()
290 	const struct ide_port_ops *port_ops = drive->hwif->port_ops;  in pre_reset()
292 	if (drive->media == ide_disk)  in pre_reset()
295 		drive->dev_flags |= IDE_DFLAG_POST_RESET;  in pre_reset()
297 	if (drive->dev_flags & IDE_DFLAG_USING_DMA) {  in pre_reset()
298 		if (drive->crc_count)  in pre_reset()
304 	if ((drive->dev_flags & IDE_DFLAG_KEEP_SETTINGS) == 0) {  in pre_reset()
305 		if ((drive->dev_flags & IDE_DFLAG_USING_DMA) == 0) {  in pre_reset()
306 			drive->dev_flags &= ~IDE_DFLAG_UNMASK;  in pre_reset()
307 			drive->io_32bit = 0;  in pre_reset()
312 	if (port_ops && port_ops->pre_reset)  in pre_reset()
313 		port_ops->pre_reset(drive);  in pre_reset()
315 	if (drive->current_speed != 0xff)  in pre_reset()
316 		drive->desired_speed = drive->current_speed;  in pre_reset()
317 	drive->current_speed = 0xff;  in pre_reset()
332  * (up to 30 seconds worstcase).  So, instead of busy-waiting here for it,
333  * we set a timer to poll at 50ms intervals.
337 	ide_hwif_t *hwif = drive->hwif;  in do_reset1()
338 	struct ide_io_ports *io_ports = &hwif->io_ports;  in do_reset1()
339 	const struct ide_tp_ops *tp_ops = hwif->tp_ops;  in do_reset1()
342 	unsigned long flags, timeout;  in do_reset1()  local
346 	spin_lock_irqsave(&hwif->lock, flags);  in do_reset1()
349 	BUG_ON(hwif->handler != NULL);  in do_reset1()
352 	if (drive->media != ide_disk && !do_not_try_atapi) {  in do_reset1()
354 		tp_ops->dev_select(drive);  in do_reset1()
356 		tp_ops->exec_command(hwif, ATA_CMD_DEV_RESET);  in do_reset1()
358 		hwif->poll_timeout = jiffies + WAIT_WORSTCASE;  in do_reset1()
359 		hwif->polling = 1;  in do_reset1()
361 		spin_unlock_irqrestore(&hwif->lock, flags);  in do_reset1()
370 		timeout = jiffies;  in do_reset1()
372 			if ((tdrive->dev_flags & IDE_DFLAG_PARKED) &&  in do_reset1()
373 			    time_after(tdrive->sleep, timeout))  in do_reset1()
374 				timeout = tdrive->sleep;  in do_reset1()
378 		if (time_before_eq(timeout, now))  in do_reset1()
381 		spin_unlock_irqrestore(&hwif->lock, flags);  in do_reset1()
382 		timeout = schedule_timeout_uninterruptible(timeout - now);  in do_reset1()
383 		spin_lock_irqsave(&hwif->lock, flags);  in do_reset1()
384 	} while (timeout);  in do_reset1()
394 	if (io_ports->ctl_addr == 0) {  in do_reset1()
395 		spin_unlock_irqrestore(&hwif->lock, flags);  in do_reset1()
406 	 * recover from reset very quickly, saving us the first 50ms wait time.  in do_reset1()
409 	tp_ops->write_devctl(hwif, ATA_SRST | ATA_NIEN | ATA_DEVCTL_OBS);  in do_reset1()
413 	tp_ops->write_devctl(hwif,  in do_reset1()
414 		((drive->dev_flags & IDE_DFLAG_NIEN_QUIRK) ? 0 : ATA_NIEN) |  in do_reset1()
418 	hwif->poll_timeout = jiffies + WAIT_WORSTCASE;  in do_reset1()
419 	hwif->polling = 1;  in do_reset1()
427 	port_ops = hwif->port_ops;  in do_reset1()
428 	if (port_ops && port_ops->resetproc)  in do_reset1()
429 		port_ops->resetproc(drive);  in do_reset1()
431 	spin_unlock_irqrestore(&hwif->lock, flags);  in do_reset1()