1 // SPDX-License-Identifier: GPL-2.0-only
3  *  Copyright (C) 2000-2002	Andre Hedrick <andre@linux-ide.org>
31 void SELECT_MASK(ide_drive_t *drive, int mask)  in SELECT_MASK()  argument
33 	const struct ide_port_ops *port_ops = drive->hwif->port_ops;  in SELECT_MASK()
35 	if (port_ops && port_ops->maskproc)  in SELECT_MASK()
36 		port_ops->maskproc(drive, mask);  in SELECT_MASK()
39 u8 ide_read_error(ide_drive_t *drive)  in ide_read_error()  argument
43 	drive->hwif->tp_ops->tf_read(drive, &tf, IDE_VALID_ERROR);  in ide_read_error()
53 	int i;  in ide_fix_driveid()  local
55 	for (i = 0; i < 256; i++)  in ide_fix_driveid()
56 		id[i] = __le16_to_cpu(id[i]);  in ide_fix_driveid()
64  * ide_fixstring() cleans up and (optionally) byte-swaps a text string,
75 		/* convert from big-endian to host byte order */  in ide_fixstring()
87 			*p++ = *(s-1);  in ide_fixstring()
96  * This routine busy-waits for the drive status to be not "busy".
99  * cases return error -- caller may then invoke ide_error().
102  * That could be done by busy-waiting for the first jiffy or two, and then
106 int __ide_wait_stat(ide_drive_t *drive, u8 good, u8 bad,  in __ide_wait_stat()  argument
109 	ide_hwif_t *hwif = drive->hwif;  in __ide_wait_stat()
110 	const struct ide_tp_ops *tp_ops = hwif->tp_ops;  in __ide_wait_stat()
113 	int i;  in __ide_wait_stat()  local
116 	udelay(1);	/* spec allows drive 400ns to assert "BUSY" */  in __ide_wait_stat()
117 	stat = tp_ops->read_status(hwif);  in __ide_wait_stat()
125 		while ((stat = tp_ops->read_status(hwif)) & ATA_BUSY) {  in __ide_wait_stat()
132 				stat = tp_ops->read_status(hwif);  in __ide_wait_stat()
139 				return -EBUSY;  in __ide_wait_stat()
152 	for (i = 0; i < 10; i++) {  in __ide_wait_stat()
154 		stat = tp_ops->read_status(hwif);  in __ide_wait_stat()
162 	return -EFAULT;  in __ide_wait_stat()
170 int ide_wait_stat(ide_startstop_t *startstop, ide_drive_t *drive, u8 good,  in ide_wait_stat()  argument
177 	if (drive->max_failures && (drive->failures > drive->max_failures)) {  in ide_wait_stat()
182 	err = __ide_wait_stat(drive, good, bad, timeout, &stat);  in ide_wait_stat()
185 		char *s = (err == -EBUSY) ? "status timeout" : "status error";  in ide_wait_stat()
186 		*startstop = ide_error(drive, s, stat);  in ide_wait_stat()
194  *	ide_in_drive_list	-	look for drive in black/white list
195  *	@id: drive identifier
198  *	Look for a drive in the blacklist and the whitelist tables
199  *	Returns 1 if the drive is found in the table.
204 	for ( ; table->id_model; table++)  in ide_in_drive_list()
205 		if ((!strcmp(table->id_model, (char *)&id[ATA_ID_PROD])) &&  in ide_in_drive_list()
206 		    (!table->id_firmware ||  in ide_in_drive_list()
207 		     strstr((char *)&id[ATA_ID_FW_REV], table->id_firmware)))  in ide_in_drive_list()
220 	{ "TSSTcorp CDDVDW SH-S202J"	, "SB00"	},
221 	{ "TSSTcorp CDDVDW SH-S202J"	, "SB01"	},
222 	{ "TSSTcorp CDDVDW SH-S202N"	, "SB00"	},
223 	{ "TSSTcorp CDDVDW SH-S202N"	, "SB01"	},
224 	{ "TSSTcorp CDDVDW SH-S202H"	, "SB00"	},
225 	{ "TSSTcorp CDDVDW SH-S202H"	, "SB01"	},
226 	{ "SAMSUNG SP0822N"		, "WA100-10"	},
234 u8 eighty_ninty_three(ide_drive_t *drive)  in eighty_ninty_three()  argument
236 	ide_hwif_t *hwif = drive->hwif;  in eighty_ninty_three()
237 	u16 *id = drive->id;  in eighty_ninty_three()
240 	if (hwif->cbl == ATA_CBL_SATA || hwif->cbl == ATA_CBL_PATA40_SHORT)  in eighty_ninty_three()
245 				  drive->name);  in eighty_ninty_three()
250 	if (hwif->cbl != ATA_CBL_PATA80 && !ivb)  in eighty_ninty_three()
255 	 * - change master/slave IDENTIFY order  in eighty_ninty_three()
256 	 * - force bit13 (80c cable present) check also for !ivb devices  in eighty_ninty_three()
257 	 *   (unless the slave device is pre-ATA3)  in eighty_ninty_three()
265 		if (strstr(model, "TSSTcorp CDDVDW SH-S202")) {  in eighty_ninty_three()
270 			if (hwif->cbl == ATA_CBL_PATA80)  in eighty_ninty_three()
279 	if (drive->dev_flags & IDE_DFLAG_UDMA33_WARNED)  in eighty_ninty_three()
282 	printk(KERN_WARNING "%s: %s side 80-wire cable detection failed, "  in eighty_ninty_three()
284 			    drive->name,  in eighty_ninty_three()
285 			    hwif->cbl == ATA_CBL_PATA80 ? "drive" : "host");  in eighty_ninty_three()
287 	drive->dev_flags |= IDE_DFLAG_UDMA33_WARNED;  in eighty_ninty_three()
305 void ide_check_nien_quirk_list(ide_drive_t *drive)  in ide_check_nien_quirk_list()  argument
307 	const char **list, *m = (char *)&drive->id[ATA_ID_PROD];  in ide_check_nien_quirk_list()
311 			drive->dev_flags |= IDE_DFLAG_NIEN_QUIRK;  in ide_check_nien_quirk_list()
316 int ide_driveid_update(ide_drive_t *drive)  in ide_driveid_update()  argument
325 	SELECT_MASK(drive, 1);  in ide_driveid_update()
326 	rc = ide_dev_read_id(drive, ATA_CMD_ID_ATA, id, 1);  in ide_driveid_update()
327 	SELECT_MASK(drive, 0);  in ide_driveid_update()
332 	drive->id[ATA_ID_UDMA_MODES]  = id[ATA_ID_UDMA_MODES];  in ide_driveid_update()
333 	drive->id[ATA_ID_MWDMA_MODES] = id[ATA_ID_MWDMA_MODES];  in ide_driveid_update()
334 	drive->id[ATA_ID_SWDMA_MODES] = id[ATA_ID_SWDMA_MODES];  in ide_driveid_update()
335 	drive->id[ATA_ID_CFA_MODES]   = id[ATA_ID_CFA_MODES];  in ide_driveid_update()
343 		printk(KERN_ERR "%s: %s: bad status\n", drive->name, __func__);  in ide_driveid_update()
348 int ide_config_drive_speed(ide_drive_t *drive, u8 speed)  in ide_config_drive_speed()  argument
350 	ide_hwif_t *hwif = drive->hwif;  in ide_config_drive_speed()
351 	const struct ide_tp_ops *tp_ops = hwif->tp_ops;  in ide_config_drive_speed()
353 	u16 *id = drive->id, i;  in ide_config_drive_speed()  local
358 	if (hwif->dma_ops)	/* check if host supports DMA */  in ide_config_drive_speed()
359 		hwif->dma_ops->dma_host_set(drive, 0);  in ide_config_drive_speed()
362 	/* Skip setting PIO flow-control modes on pre-EIDE drives */  in ide_config_drive_speed()
363 	if ((speed & 0xf8) == XFER_PIO_0 && ata_id_has_iordy(drive->id) == 0)  in ide_config_drive_speed()
367 	 * Don't use ide_wait_cmd here - it will  in ide_config_drive_speed()
374 	tp_ops->dev_select(drive);  in ide_config_drive_speed()
375 	SELECT_MASK(drive, 1);  in ide_config_drive_speed()
377 	tp_ops->write_devctl(hwif, ATA_NIEN | ATA_DEVCTL_OBS);  in ide_config_drive_speed()
383 	tp_ops->tf_load(drive, &tf, IDE_VALID_FEATURE | IDE_VALID_NSECT);  in ide_config_drive_speed()
385 	tp_ops->exec_command(hwif, ATA_CMD_SET_FEATURES);  in ide_config_drive_speed()
387 	if (drive->dev_flags & IDE_DFLAG_NIEN_QUIRK)  in ide_config_drive_speed()
388 		tp_ops->write_devctl(hwif, ATA_DEVCTL_OBS);  in ide_config_drive_speed()
390 	error = __ide_wait_stat(drive, drive->ready_stat,  in ide_config_drive_speed()
394 	SELECT_MASK(drive, 0);  in ide_config_drive_speed()
397 		(void) ide_dump_status(drive, "set_drive_speed_status", stat);  in ide_config_drive_speed()
412 	if (speed >= XFER_SW_DMA_0 && (drive->dev_flags & IDE_DFLAG_USING_DMA))  in ide_config_drive_speed()
413 		hwif->dma_ops->dma_host_set(drive, 1);  in ide_config_drive_speed()
414 	else if (hwif->dma_ops)	/* check if host supports DMA */  in ide_config_drive_speed()
415 		ide_dma_off_quietly(drive);  in ide_config_drive_speed()
419 		i = 1 << (speed - XFER_UDMA_0);  in ide_config_drive_speed()
420 		id[ATA_ID_UDMA_MODES] |= (i << 8 | i);  in ide_config_drive_speed()
422 		i = speed - XFER_MW_DMA_2;  in ide_config_drive_speed()
423 		id[ATA_ID_CFA_MODES] |= i << 9;  in ide_config_drive_speed()
425 		i = 1 << (speed - XFER_MW_DMA_0);  in ide_config_drive_speed()
426 		id[ATA_ID_MWDMA_MODES] |= (i << 8 | i);  in ide_config_drive_speed()
428 		i = 1 << (speed - XFER_SW_DMA_0);  in ide_config_drive_speed()
429 		id[ATA_ID_SWDMA_MODES] |= (i << 8 | i);  in ide_config_drive_speed()
431 		i = speed - XFER_PIO_4;  in ide_config_drive_speed()
432 		id[ATA_ID_CFA_MODES] |= i << 6;  in ide_config_drive_speed()
435 	if (!drive->init_speed)  in ide_config_drive_speed()
436 		drive->init_speed = speed;  in ide_config_drive_speed()
437 	drive->current_speed = speed;  in ide_config_drive_speed()
443  * wait for an interrupt response from a drive.  handler() points
450 void __ide_set_handler(ide_drive_t *drive, ide_handler_t *handler,  in __ide_set_handler()  argument
453 	ide_hwif_t *hwif = drive->hwif;  in __ide_set_handler()
455 	BUG_ON(hwif->handler);  in __ide_set_handler()
456 	hwif->handler		= handler;  in __ide_set_handler()
457 	hwif->timer.expires	= jiffies + timeout;  in __ide_set_handler()
458 	hwif->req_gen_timer	= hwif->req_gen;  in __ide_set_handler()
459 	add_timer(&hwif->timer);  in __ide_set_handler()
462 void ide_set_handler(ide_drive_t *drive, ide_handler_t *handler,  in ide_set_handler()  argument
465 	ide_hwif_t *hwif = drive->hwif;  in ide_set_handler()
468 	spin_lock_irqsave(&hwif->lock, flags);  in ide_set_handler()
469 	__ide_set_handler(drive, handler, timeout);  in ide_set_handler()
470 	spin_unlock_irqrestore(&hwif->lock, flags);  in ide_set_handler()
475  *	ide_execute_command	-	execute an IDE command
476  *	@drive: IDE drive to issue the command against
487 void ide_execute_command(ide_drive_t *drive, struct ide_cmd *cmd,  in ide_execute_command()  argument
490 	ide_hwif_t *hwif = drive->hwif;  in ide_execute_command()
493 	spin_lock_irqsave(&hwif->lock, flags);  in ide_execute_command()
494 	if ((cmd->protocol != ATAPI_PROT_DMA &&  in ide_execute_command()
495 	     cmd->protocol != ATAPI_PROT_PIO) ||  in ide_execute_command()
496 	    (drive->atapi_flags & IDE_AFLAG_DRQ_INTERRUPT))  in ide_execute_command()
497 		__ide_set_handler(drive, handler, timeout);  in ide_execute_command()
498 	hwif->tp_ops->exec_command(hwif, cmd->tf.command);  in ide_execute_command()
500 	 * Drive takes 400nS to respond, we must avoid the IRQ being  in ide_execute_command()
506 	spin_unlock_irqrestore(&hwif->lock, flags);  in ide_execute_command()
511  * to report a non-busy status, see comments in ide_probe_port().
517 	while (timeout--) {  in ide_wait_not_busy()
519 		 * Turn this into a schedule() sleep once I'm sure  in ide_wait_not_busy()
523 		stat = hwif->tp_ops->read_status(hwif);  in ide_wait_not_busy()
528 		 * the interface and it doesn't implement the pull-down  in ide_wait_not_busy()
532 			return -ENODEV;  in ide_wait_not_busy()
535 	return -EBUSY;  in ide_wait_not_busy()