Commit 3719122a authored by Stefan Richter's avatar Stefan Richter
Browse files

ieee1394: sbp2: fix spindown for PL-3507 and TSB42AA9 firmwares 



Reported by Tino Keitel:  PL-3507 with firmware from Prolific does not
spin down the disk on START STOP UNIT with power condition = 0 and start
= 0.  It does however work with power condition = 2 or 3.

Also found while investigating this:  DViCO Momobay CX-1 and FX-3A (TI
TSB42AA9/A based) become unresponsive after START STOP UNIT with power
condition = 0 and start = 0.  They stay responsive if power condition is
set when stopping the motor.

Signed-off-by: default avatarStefan Richter <stefanr@s5r6.in-berlin.de>
parent ffcaade3

drivers/ieee1394/sbp2.c

+18 −2
Original line number Diff line number Diff line
@@ -186,6 +186,11 @@ MODULE_PARM_DESC(exclusive_login, "Exclusive login to sbp2 device " 
 * - delay inquiry

 *   Wait extra SBP2_INQUIRY_DELAY seconds after login before SCSI inquiry.

 *

 * - power condition

 *   Set the power condition field in the START STOP UNIT commands sent by

 *   sd_mod on suspend, resume, and shutdown (if manage_start_stop is on).

 *   Some disks need this to spin down or to resume properly.

 *

 * - override internal blacklist

 *   Instead of adding to the built-in blacklist, use only the workarounds

 *   specified in the module load parameter.
@@ -199,6 +204,8 @@ MODULE_PARM_DESC(workarounds, "Work around device bugs (default = 0" 
	", skip mode page 8 = "   __stringify(SBP2_WORKAROUND_MODE_SENSE_8)

	", fix capacity = "       __stringify(SBP2_WORKAROUND_FIX_CAPACITY)

	", delay inquiry = "      __stringify(SBP2_WORKAROUND_DELAY_INQUIRY)

	", set power condition in start stop unit = "

				  __stringify(SBP2_WORKAROUND_POWER_CONDITION)

	", override internal blacklist = " __stringify(SBP2_WORKAROUND_OVERRIDE)

	", or a combination)");
@@ -359,18 +366,25 @@ static const struct { 
		.firmware_revision	= 0x002800,

		.model_id		= 0x001010,

		.workarounds		= SBP2_WORKAROUND_INQUIRY_36 |

					  SBP2_WORKAROUND_MODE_SENSE_8,

					  SBP2_WORKAROUND_MODE_SENSE_8 |

					  SBP2_WORKAROUND_POWER_CONDITION,

	},

	/* DViCO Momobay FX-3A with TSB42AA9A bridge */ {

		.firmware_revision	= 0x002800,

		.model_id		= 0x000000,

		.workarounds		= SBP2_WORKAROUND_DELAY_INQUIRY,

		.workarounds		= SBP2_WORKAROUND_DELAY_INQUIRY |

					  SBP2_WORKAROUND_POWER_CONDITION,

	},

	/* Initio bridges, actually only needed for some older ones */ {

		.firmware_revision	= 0x000200,

		.model_id		= SBP2_ROM_VALUE_WILDCARD,

		.workarounds		= SBP2_WORKAROUND_INQUIRY_36,

	},

	/* PL-3507 bridge with Prolific firmware */ {

		.firmware_revision	= 0x012800,

		.model_id		= SBP2_ROM_VALUE_WILDCARD,

		.workarounds		= SBP2_WORKAROUND_POWER_CONDITION,

	},

	/* Symbios bridge */ {

		.firmware_revision	= 0xa0b800,

		.model_id		= SBP2_ROM_VALUE_WILDCARD,
@@ -2002,6 +2016,8 @@ static int sbp2scsi_slave_configure(struct scsi_device *sdev) 
		sdev->skip_ms_page_8 = 1;

	if (lu->workarounds & SBP2_WORKAROUND_FIX_CAPACITY)

		sdev->fix_capacity = 1;

	if (lu->workarounds & SBP2_WORKAROUND_POWER_CONDITION)

		sdev->start_stop_pwr_cond = 1;

	if (lu->workarounds & SBP2_WORKAROUND_128K_MAX_TRANS)

		blk_queue_max_sectors(sdev->request_queue, 128 * 1024 / 512);

	return 0;

drivers/ieee1394/sbp2.h

+1 −0
Original line number Diff line number Diff line
@@ -345,6 +345,7 @@ enum sbp2lu_state_types { 
#define SBP2_WORKAROUND_FIX_CAPACITY	0x8

#define SBP2_WORKAROUND_DELAY_INQUIRY	0x10

#define SBP2_INQUIRY_DELAY		12

#define SBP2_WORKAROUND_POWER_CONDITION	0x20

#define SBP2_WORKAROUND_OVERRIDE	0x100



#endif /* SBP2_H */

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