linux-toradex.git/include/linux/ata.h, branch v6.4-rc1

ata: drop unused ata_id_is_lba_capacity_ok()

2023-03-23T01:29:25+00:00

This function was renamed from lba_capacity_is_ok()() and moved from
drivers/ide/ to  but it never got used by libata, thus it
became useless after drivers/ide/ removal...

Signed-off-by: Sergey Shtylyov 
Signed-off-by: Damien Le Moal

ata: drop unused ata_id_to_hd_driveid()

2023-03-23T01:29:25+00:00

This function was renamed from ide_id_to_hd_driveid() and moved from
drivers/ide/ to  but it never got used by libata, thus it
became useless after drivers/ide/ removal...

Signed-off-by: Sergey Shtylyov 
Signed-off-by: Damien Le Moal

ata: remove unused helper ata_id_flush_ext_enabled()

2022-10-20T22:55:44+00:00

Not only is this function unused, but even worse, the bit it is checking
is actually used for signaling if the feature is supported, not enabled.
Therefore, remove the unused helper function ata_id_flush_ext_enabled().

ata_id_has_flush_ext() is left unmodified, since this extra supported bit
(Bit 13 of word 86) is simply a copy of the bit that ata_id_has_flush_ext()
already checks (Bit 13 of word 83), see ACS-5 r10:
7.13.6.41 Words 85..87, 120: Commands and feature sets supported or enabled

Signed-off-by: Niklas Cassel 
Signed-off-by: Damien Le Moal

ata: remove unused helper ata_id_flush_enabled()

2022-10-20T22:55:42+00:00

Not only is this function unused, but even worse, the bit it is checking
is actually used for signaling if the feature is supported, not enabled.
Therefore, remove the unused helper function ata_id_flush_enabled().

ata_id_has_flush() is left unmodified, since this extra supported bit
(Bit 12 of word 86) is simply a copy of the bit that ata_id_has_flush()
already checks (Bit 12 of word 83), see ACS-5 r10:
7.13.6.41 Words 85..87, 120: Commands and feature sets supported or enabled

Signed-off-by: Niklas Cassel 
Signed-off-by: Damien Le Moal

ata: remove unused helper ata_id_lba48_enabled()

2022-10-20T22:55:40+00:00

Not only is this function unused, but even worse, the bit it is checking
is actually used for signaling if the feature is supported, not enabled.
Therefore, remove the unused helper function ata_id_lba48_enabled().

ata_id_has_lba48() is left unmodified, since this extra supported bit
(Bit 10 of word 86) is simply a copy of the bit that ata_id_has_lba48()
already checks (Bit 10 of word 83), see ACS-5 r10:
7.13.6.41 Words 85..87, 120: Commands and feature sets supported or enabled

Signed-off-by: Niklas Cassel 
Signed-off-by: Damien Le Moal

ata: fix ata_id_has_dipm()

2022-09-21T02:18:28+00:00

ACS-5 section
7.13.6.36 Word 78: Serial ATA features supported
states that:

If word 76 is not 0000h or FFFFh, word 78 reports the features supported
by the device. If this word is not supported, the word shall be cleared
to zero.

(This text also exists in really old ACS standards, e.g. ACS-3.)

The problem with ata_id_has_dipm() is that the while it performs a
check against 0 and 0xffff, it performs the check against
ATA_ID_FEATURE_SUPP (word 78), the same word where the feature bit
is stored.

Fix this by performing the check against ATA_ID_SATA_CAPABILITY
(word 76), like required by the spec. The feature bit check itself
is of course still performed against ATA_ID_FEATURE_SUPP (word 78).

Additionally, move the macro to the other ATA_ID_FEATURE_SUPP macros
(which already have this check), thus making it more likely that the
next ATA_ID_FEATURE_SUPP macro that is added will include this check.

Fixes: ca77329fb713 ("[libata] Link power management infrastructure")
Signed-off-by: Niklas Cassel 
Signed-off-by: Damien Le Moal

ata: fix ata_id_has_ncq_autosense()

2022-09-21T02:18:26+00:00

ACS-5 section
7.13.6.36 Word 78: Serial ATA features supported
states that:

If word 76 is not 0000h or FFFFh, word 78 reports the features supported
by the device. If this word is not supported, the word shall be cleared
to zero.

(This text also exists in really old ACS standards, e.g. ACS-3.)

Additionally, move the macro to the other ATA_ID_FEATURE_SUPP macros
(which already have this check), thus making it more likely that the
next ATA_ID_FEATURE_SUPP macro that is added will include this check.

Fixes: 5b01e4b9efa0 ("libata: Implement NCQ autosense")
Signed-off-by: Niklas Cassel 
Signed-off-by: Damien Le Moal

ata: fix ata_id_has_devslp()

2022-09-21T02:18:24+00:00

ACS-5 section
7.13.6.36 Word 78: Serial ATA features supported
states that:

If word 76 is not 0000h or FFFFh, word 78 reports the features supported
by the device. If this word is not supported, the word shall be cleared
to zero.

(This text also exists in really old ACS standards, e.g. ACS-3.)

Additionally, move the macro to the other ATA_ID_FEATURE_SUPP macros
(which already have this check), thus making it more likely that the
next ATA_ID_FEATURE_SUPP macro that is added will include this check.

Fixes: 65fe1f0f66a5 ("ahci: implement aggressive SATA device sleep support")
Signed-off-by: Niklas Cassel 
Signed-off-by: Damien Le Moal

ata: fix ata_id_sense_reporting_enabled() and ata_id_has_sense_reporting()

2022-09-21T02:18:21+00:00

ACS-5 section
7.13.6.41 Words 85..87, 120: Commands and feature sets supported or enabled
states that:

If bit 15 of word 86 is set to one, bit 14 of word 119 is set to one,
and bit 15 of word 119 is cleared to zero, then word 119 is valid.

If bit 15 of word 86 is set to one, bit 14 of word 120 is set to one,
and bit 15 of word 120 is cleared to zero, then word 120 is valid.

(This text also exists in really old ACS standards, e.g. ACS-3.)

Currently, ata_id_sense_reporting_enabled() and
ata_id_has_sense_reporting() both check bit 15 of word 86,
but neither of them check that bit 14 of word 119 is set to one,
or that bit 15 of word 119 is cleared to zero.

Additionally, make ata_id_sense_reporting_enabled() return false
if !ata_id_has_sense_reporting(), similar to how e.g.
ata_id_flush_ext_enabled() returns false if !ata_id_has_flush_ext().

Fixes: e87fd28cf9a2 ("libata: Implement support for sense data reporting")
Signed-off-by: Niklas Cassel 
Signed-off-by: Damien Le Moal

ata: libata-core: Fix ata_dev_config_cpr()

2022-02-07T13:38:02+00:00

The concurrent positioning ranges log page 47h is a general purpose log
page and not a subpage of the indentify device log. Using
ata_identify_page_supported() to test for concurrent positioning ranges
support is thus wrong. ata_log_supported() must be used.

Furthermore, unlike other advanced ATA features (e.g. NCQ priority),
accesses to the concurrent positioning ranges log page are not gated by
a feature bit from the device IDENTIFY data. Since many older drives
react badly to the READ LOG EXT and/or READ LOG DMA EXT commands isued
to read device log pages, avoid problems with older drives by limiting
the concurrent positioning ranges support detection to drives
implementing at least the ACS-4 ATA standard (major version 11). This
additional condition effectively turns ata_dev_config_cpr() into a nop
for older drives, avoiding problems in the field.

Fixes: fe22e1c2f705 ("libata: support concurrent positioning ranges log")
BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=215519
Cc: stable@vger.kernel.org
Reviewed-by: Hannes Reinecke 
Tested-by: Abderraouf Adjal 
Signed-off-by: Damien Le Moal