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3616 Commits

Author SHA1 Message Date
Colin Ian King
8740fa6f5c sata_nv: remove redundant pointers sdev0 and sdev1 
Pointers sdev0 and sdev1 are being assigned but are never used hence they
are redundant and can be removed.

Cleans up clang warnings:
warning: variable 'sdev0' set but not used [-Wunused-but-set-variable]
warning: variable 'sdev1' set but not used [-Wunused-but-set-variable]

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
 2018-07-02 07:47:06 -07:00
Jens Axboe
eb36333de4 sata_fsl: remove dead code in tag retrieval 
We can never pass in the internal tag to this helper, it'll
always be the hardware tag. So there's no need to check and
do an internal translation of that tag.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Tejun Heo <tj@kernel.org>
 2018-06-19 09:30:27 -07:00
Jens Axboe
d3543b4d1b sata_fsl: convert to command iterator 
We need to iterate all commands, including the internal one,
for ATAPI error handling.

Fixes: 28361c4036 ("libata: add extra internal command")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Tejun Heo <tj@kernel.org>
 2018-06-19 09:30:27 -07:00
Jens Axboe
258c4e5c65 libata: convert eh to command iterators 
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Tejun Heo <tj@kernel.org>
 2018-06-19 09:30:27 -07:00
Wei Yongjun
95ffcf471d ata: ahci_mvebu: ahci_mvebu_stop_engine() can be static 
Fixes the following sparse warning:

drivers/ata/ahci_mvebu.c:85:5: warning:
 symbol 'ahci_mvebu_stop_engine' was not declared. Should it be static?

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
 2018-06-18 11:31:07 -07:00
John Garry
fae2a63737 libahci: Fix possible Spectre-v1 pmp indexing in ahci_led_store() 
Currently smatch warns of possible Spectre-V1 issue in ahci_led_store():
drivers/ata/libahci.c:1150 ahci_led_store() warn: potential spectre issue 'pp->em_priv' (local cap)

Userspace controls @pmp from following callchain:
em_message->store()
->ata_scsi_em_message_store()
-->ap->ops->em_store()
--->ahci_led_store()

After the mask+shift @pmp is effectively an 8b value, which is used to
index into an array of length 8, so sanitize the array index.

Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
 2018-06-18 11:04:28 -07:00
Kees Cook
a86854d0c5 treewide: devm_kzalloc() -> devm_kcalloc() 
The devm_kzalloc() function has a 2-factor argument form, devm_kcalloc().
This patch replaces cases of:

        devm_kzalloc(handle, a * b, gfp)

with:
        devm_kcalloc(handle, a * b, gfp)

as well as handling cases of:

        devm_kzalloc(handle, a * b * c, gfp)

with:

        devm_kzalloc(handle, array3_size(a, b, c), gfp)

as it's slightly less ugly than:

        devm_kcalloc(handle, array_size(a, b), c, gfp)

This does, however, attempt to ignore constant size factors like:

        devm_kzalloc(handle, 4 * 1024, gfp)

though any constants defined via macros get caught up in the conversion.

Any factors with a sizeof() of "unsigned char", "char", and "u8" were
dropped, since they're redundant.

Some manual whitespace fixes were needed in this patch, as Coccinelle
really liked to write "=devm_kcalloc..." instead of "= devm_kcalloc...".

The Coccinelle script used for this was:

// Fix redundant parens around sizeof().
@@
expression HANDLE;
type TYPE;
expression THING, E;
@@

(
  devm_kzalloc(HANDLE,
-	(sizeof(TYPE)) * E
+	sizeof(TYPE) * E
  , ...)
|
  devm_kzalloc(HANDLE,
-	(sizeof(THING)) * E
+	sizeof(THING) * E
  , ...)
)

// Drop single-byte sizes and redundant parens.
@@
expression HANDLE;
expression COUNT;
typedef u8;
typedef __u8;
@@

(
  devm_kzalloc(HANDLE,
-	sizeof(u8) * (COUNT)
+	COUNT
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(__u8) * (COUNT)
+	COUNT
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(char) * (COUNT)
+	COUNT
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(unsigned char) * (COUNT)
+	COUNT
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(u8) * COUNT
+	COUNT
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(__u8) * COUNT
+	COUNT
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(char) * COUNT
+	COUNT
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(unsigned char) * COUNT
+	COUNT
  , ...)
)

// 2-factor product with sizeof(type/expression) and identifier or constant.
@@
expression HANDLE;
type TYPE;
expression THING;
identifier COUNT_ID;
constant COUNT_CONST;
@@

(
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(TYPE) * (COUNT_ID)
+	COUNT_ID, sizeof(TYPE)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(TYPE) * COUNT_ID
+	COUNT_ID, sizeof(TYPE)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(TYPE) * (COUNT_CONST)
+	COUNT_CONST, sizeof(TYPE)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(TYPE) * COUNT_CONST
+	COUNT_CONST, sizeof(TYPE)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(THING) * (COUNT_ID)
+	COUNT_ID, sizeof(THING)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(THING) * COUNT_ID
+	COUNT_ID, sizeof(THING)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(THING) * (COUNT_CONST)
+	COUNT_CONST, sizeof(THING)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(THING) * COUNT_CONST
+	COUNT_CONST, sizeof(THING)
  , ...)
)

// 2-factor product, only identifiers.
@@
expression HANDLE;
identifier SIZE, COUNT;
@@

- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	SIZE * COUNT
+	COUNT, SIZE
  , ...)

// 3-factor product with 1 sizeof(type) or sizeof(expression), with
// redundant parens removed.
@@
expression HANDLE;
expression THING;
identifier STRIDE, COUNT;
type TYPE;
@@

(
  devm_kzalloc(HANDLE,
-	sizeof(TYPE) * (COUNT) * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(TYPE) * (COUNT) * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(TYPE) * COUNT * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(TYPE) * COUNT * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(THING) * (COUNT) * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(THING) * (COUNT) * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(THING) * COUNT * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(THING) * COUNT * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
)

// 3-factor product with 2 sizeof(variable), with redundant parens removed.
@@
expression HANDLE;
expression THING1, THING2;
identifier COUNT;
type TYPE1, TYPE2;
@@

(
  devm_kzalloc(HANDLE,
-	sizeof(TYPE1) * sizeof(TYPE2) * COUNT
+	array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(THING1) * sizeof(THING2) * COUNT
+	array3_size(COUNT, sizeof(THING1), sizeof(THING2))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(THING1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(THING1), sizeof(THING2))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(TYPE1) * sizeof(THING2) * COUNT
+	array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
  , ...)
)

// 3-factor product, only identifiers, with redundant parens removed.
@@
expression HANDLE;
identifier STRIDE, SIZE, COUNT;
@@

(
  devm_kzalloc(HANDLE,
-	(COUNT) * STRIDE * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  devm_kzalloc(HANDLE,
-	COUNT * (STRIDE) * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  devm_kzalloc(HANDLE,
-	COUNT * STRIDE * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  devm_kzalloc(HANDLE,
-	(COUNT) * (STRIDE) * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  devm_kzalloc(HANDLE,
-	COUNT * (STRIDE) * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  devm_kzalloc(HANDLE,
-	(COUNT) * STRIDE * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  devm_kzalloc(HANDLE,
-	(COUNT) * (STRIDE) * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  devm_kzalloc(HANDLE,
-	COUNT * STRIDE * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
)

// Any remaining multi-factor products, first at least 3-factor products,
// when they're not all constants...
@@
expression HANDLE;
expression E1, E2, E3;
constant C1, C2, C3;
@@

(
  devm_kzalloc(HANDLE, C1 * C2 * C3, ...)
|
  devm_kzalloc(HANDLE,
-	(E1) * E2 * E3
+	array3_size(E1, E2, E3)
  , ...)
|
  devm_kzalloc(HANDLE,
-	(E1) * (E2) * E3
+	array3_size(E1, E2, E3)
  , ...)
|
  devm_kzalloc(HANDLE,
-	(E1) * (E2) * (E3)
+	array3_size(E1, E2, E3)
  , ...)
|
  devm_kzalloc(HANDLE,
-	E1 * E2 * E3
+	array3_size(E1, E2, E3)
  , ...)
)

// And then all remaining 2 factors products when they're not all constants,
// keeping sizeof() as the second factor argument.
@@
expression HANDLE;
expression THING, E1, E2;
type TYPE;
constant C1, C2, C3;
@@

(
  devm_kzalloc(HANDLE, sizeof(THING) * C2, ...)
|
  devm_kzalloc(HANDLE, sizeof(TYPE) * C2, ...)
|
  devm_kzalloc(HANDLE, C1 * C2 * C3, ...)
|
  devm_kzalloc(HANDLE, C1 * C2, ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(TYPE) * (E2)
+	E2, sizeof(TYPE)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(TYPE) * E2
+	E2, sizeof(TYPE)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(THING) * (E2)
+	E2, sizeof(THING)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(THING) * E2
+	E2, sizeof(THING)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	(E1) * E2
+	E1, E2
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	(E1) * (E2)
+	E1, E2
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	E1 * E2
+	E1, E2
  , ...)
)

Signed-off-by: Kees Cook <keescook@chromium.org>
 2018-06-12 16:19:22 -07:00
Kees Cook
6396bb2215 treewide: kzalloc() -> kcalloc() 
The kzalloc() function has a 2-factor argument form, kcalloc(). This
patch replaces cases of:

        kzalloc(a * b, gfp)

with:
        kcalloc(a * b, gfp)

as well as handling cases of:

        kzalloc(a * b * c, gfp)

with:

        kzalloc(array3_size(a, b, c), gfp)

as it's slightly less ugly than:

        kzalloc_array(array_size(a, b), c, gfp)

This does, however, attempt to ignore constant size factors like:

        kzalloc(4 * 1024, gfp)

though any constants defined via macros get caught up in the conversion.

Any factors with a sizeof() of "unsigned char", "char", and "u8" were
dropped, since they're redundant.

The Coccinelle script used for this was:

// Fix redundant parens around sizeof().
@@
type TYPE;
expression THING, E;
@@

(
  kzalloc(
-	(sizeof(TYPE)) * E
+	sizeof(TYPE) * E
  , ...)
|
  kzalloc(
-	(sizeof(THING)) * E
+	sizeof(THING) * E
  , ...)
)

// Drop single-byte sizes and redundant parens.
@@
expression COUNT;
typedef u8;
typedef __u8;
@@

(
  kzalloc(
-	sizeof(u8) * (COUNT)
+	COUNT
  , ...)
|
  kzalloc(
-	sizeof(__u8) * (COUNT)
+	COUNT
  , ...)
|
  kzalloc(
-	sizeof(char) * (COUNT)
+	COUNT
  , ...)
|
  kzalloc(
-	sizeof(unsigned char) * (COUNT)
+	COUNT
  , ...)
|
  kzalloc(
-	sizeof(u8) * COUNT
+	COUNT
  , ...)
|
  kzalloc(
-	sizeof(__u8) * COUNT
+	COUNT
  , ...)
|
  kzalloc(
-	sizeof(char) * COUNT
+	COUNT
  , ...)
|
  kzalloc(
-	sizeof(unsigned char) * COUNT
+	COUNT
  , ...)
)

// 2-factor product with sizeof(type/expression) and identifier or constant.
@@
type TYPE;
expression THING;
identifier COUNT_ID;
constant COUNT_CONST;
@@

(
- kzalloc
+ kcalloc
  (
-	sizeof(TYPE) * (COUNT_ID)
+	COUNT_ID, sizeof(TYPE)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(TYPE) * COUNT_ID
+	COUNT_ID, sizeof(TYPE)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(TYPE) * (COUNT_CONST)
+	COUNT_CONST, sizeof(TYPE)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(TYPE) * COUNT_CONST
+	COUNT_CONST, sizeof(TYPE)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(THING) * (COUNT_ID)
+	COUNT_ID, sizeof(THING)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(THING) * COUNT_ID
+	COUNT_ID, sizeof(THING)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(THING) * (COUNT_CONST)
+	COUNT_CONST, sizeof(THING)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(THING) * COUNT_CONST
+	COUNT_CONST, sizeof(THING)
  , ...)
)

// 2-factor product, only identifiers.
@@
identifier SIZE, COUNT;
@@

- kzalloc
+ kcalloc
  (
-	SIZE * COUNT
+	COUNT, SIZE
  , ...)

// 3-factor product with 1 sizeof(type) or sizeof(expression), with
// redundant parens removed.
@@
expression THING;
identifier STRIDE, COUNT;
type TYPE;
@@

(
  kzalloc(
-	sizeof(TYPE) * (COUNT) * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  kzalloc(
-	sizeof(TYPE) * (COUNT) * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  kzalloc(
-	sizeof(TYPE) * COUNT * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  kzalloc(
-	sizeof(TYPE) * COUNT * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  kzalloc(
-	sizeof(THING) * (COUNT) * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  kzalloc(
-	sizeof(THING) * (COUNT) * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  kzalloc(
-	sizeof(THING) * COUNT * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  kzalloc(
-	sizeof(THING) * COUNT * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
)

// 3-factor product with 2 sizeof(variable), with redundant parens removed.
@@
expression THING1, THING2;
identifier COUNT;
type TYPE1, TYPE2;
@@

(
  kzalloc(
-	sizeof(TYPE1) * sizeof(TYPE2) * COUNT
+	array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
  , ...)
|
  kzalloc(
-	sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
  , ...)
|
  kzalloc(
-	sizeof(THING1) * sizeof(THING2) * COUNT
+	array3_size(COUNT, sizeof(THING1), sizeof(THING2))
  , ...)
|
  kzalloc(
-	sizeof(THING1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(THING1), sizeof(THING2))
  , ...)
|
  kzalloc(
-	sizeof(TYPE1) * sizeof(THING2) * COUNT
+	array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
  , ...)
|
  kzalloc(
-	sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
  , ...)
)

// 3-factor product, only identifiers, with redundant parens removed.
@@
identifier STRIDE, SIZE, COUNT;
@@

(
  kzalloc(
-	(COUNT) * STRIDE * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc(
-	COUNT * (STRIDE) * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc(
-	COUNT * STRIDE * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc(
-	(COUNT) * (STRIDE) * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc(
-	COUNT * (STRIDE) * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc(
-	(COUNT) * STRIDE * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc(
-	(COUNT) * (STRIDE) * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc(
-	COUNT * STRIDE * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
)

// Any remaining multi-factor products, first at least 3-factor products,
// when they're not all constants...
@@
expression E1, E2, E3;
constant C1, C2, C3;
@@

(
  kzalloc(C1 * C2 * C3, ...)
|
  kzalloc(
-	(E1) * E2 * E3
+	array3_size(E1, E2, E3)
  , ...)
|
  kzalloc(
-	(E1) * (E2) * E3
+	array3_size(E1, E2, E3)
  , ...)
|
  kzalloc(
-	(E1) * (E2) * (E3)
+	array3_size(E1, E2, E3)
  , ...)
|
  kzalloc(
-	E1 * E2 * E3
+	array3_size(E1, E2, E3)
  , ...)
)

// And then all remaining 2 factors products when they're not all constants,
// keeping sizeof() as the second factor argument.
@@
expression THING, E1, E2;
type TYPE;
constant C1, C2, C3;
@@

(
  kzalloc(sizeof(THING) * C2, ...)
|
  kzalloc(sizeof(TYPE) * C2, ...)
|
  kzalloc(C1 * C2 * C3, ...)
|
  kzalloc(C1 * C2, ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(TYPE) * (E2)
+	E2, sizeof(TYPE)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(TYPE) * E2
+	E2, sizeof(TYPE)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(THING) * (E2)
+	E2, sizeof(THING)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(THING) * E2
+	E2, sizeof(THING)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	(E1) * E2
+	E1, E2
  , ...)
|
- kzalloc
+ kcalloc
  (
-	(E1) * (E2)
+	E1, E2
  , ...)
|
- kzalloc
+ kcalloc
  (
-	E1 * E2
+	E1, E2
  , ...)
)

Signed-off-by: Kees Cook <keescook@chromium.org>
 2018-06-12 16:19:22 -07:00
Linus Torvalds
5f85942c2e SCSI misc on 20180610 
This is mostly updates to the usual drivers: ufs, qedf, mpt3sas, lpfc,
 xfcp, hisi_sas, cxlflash, qla2xxx.  In the absence of Nic, we're also
 taking target updates which are mostly minor except for the tcmu
 refactor. The only real core change to worry about is the removal of
 high page bouncing (in sas, storvsc and iscsi).  This has been well
 tested and no problems have shown up so far.
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.vnet.ibm.com>
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI updates from James Bottomley:
 "This is mostly updates to the usual drivers: ufs, qedf, mpt3sas, lpfc,
  xfcp, hisi_sas, cxlflash, qla2xxx.

  In the absence of Nic, we're also taking target updates which are
  mostly minor except for the tcmu refactor.

  The only real core change to worry about is the removal of high page
  bouncing (in sas, storvsc and iscsi). This has been well tested and no
  problems have shown up so far"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (268 commits)
  scsi: lpfc: update driver version to 12.0.0.4
  scsi: lpfc: Fix port initialization failure.
  scsi: lpfc: Fix 16gb hbas failing cq create.
  scsi: lpfc: Fix crash in blk_mq layer when executing modprobe -r lpfc
  scsi: lpfc: correct oversubscription of nvme io requests for an adapter
  scsi: lpfc: Fix MDS diagnostics failure (Rx < Tx)
  scsi: hisi_sas: Mark PHY as in reset for nexus reset
  scsi: hisi_sas: Fix return value when get_free_slot() failed
  scsi: hisi_sas: Terminate STP reject quickly for v2 hw
  scsi: hisi_sas: Add v2 hw force PHY function for internal ATA command
  scsi: hisi_sas: Include TMF elements in struct hisi_sas_slot
  scsi: hisi_sas: Try wait commands before before controller reset
  scsi: hisi_sas: Init disks after controller reset
  scsi: hisi_sas: Create a scsi_host_template per HW module
  scsi: hisi_sas: Reset disks when discovered
  scsi: hisi_sas: Add LED feature for v3 hw
  scsi: hisi_sas: Change common allocation mode of device id
  scsi: hisi_sas: change slot index allocation mode
  scsi: hisi_sas: Introduce hisi_sas_phy_set_linkrate()
  scsi: hisi_sas: fix a typo in hisi_sas_task_prep()
  ...
 2018-06-10 13:01:12 -07:00
Linus Torvalds
0bbddb8cbe Merge branch 'for-4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata 
Pull libata updates from Tejun Heo:

 - libata has always been limiting the maximum queue depth to 31, with
   one entry set aside mostly for historical reasons. This didn't use to
   make much difference but Jens found out that modern hard drives can
   actually perform measurably better with the extra one queue depth.
   Jens updated libata core so that it can make use of full 32 queue
   depth

 - Damien updated command retry logic in error handling so that it
   doesn't unnecessarily retry when upper layer (SCSI) is gonna handle
   them

 - A couple misc changes

* 'for-4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata:
  sata_fsl: use the right type for tag bitshift
  ahci: enable full queue depth of 32
  libata: don't clamp queue depth to ATA_MAX_QUEUE - 1
  libata: add extra internal command
  sata_nv: set host can_queue count appropriately
  libata: remove assumption that ATA_MAX_QUEUE - 1 is the max
  libata: use ata_tag_internal() consistently
  libata: bump ->qc_active to a 64-bit type
  libata: convert core and drivers to ->hw_tag usage
  libata: introduce notion of separate hardware tags
  libata: Fix command retry decision
  libata: Honor RQF_QUIET flag
  libata: Make ata_dev_set_mode() less verbose
  libata: Fix ata_err_string()
  libata: Fix comment typo in ata_eh_analyze_tf()
  sata_nv: don't use block layer bounce buffer
  ata: hpt37x: Convert to use match_string() helper
 2018-06-05 17:01:41 -07:00
Linus Torvalds
476d9ff653 Merge branch 'for-4.17-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata 
Pull libata fixes from Tejun Heo:
 "These two are fixes which missed v4.17.

  One is to remove an incorrect power management blacklist entry and the
  other to fix a cdb buffer overrun which has been there for a very long
  time"

* 'for-4.17-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata:
  libata: Drop SanDisk SD7UB3Q*G1001 NOLPM quirk
  libata: zpodd: small read overflow in eject_tray()
 2018-06-05 16:59:33 -07:00
Linus Torvalds
f459c34538 for-4.18/block-20180603 
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Merge tag 'for-4.18/block-20180603' of git://git.kernel.dk/linux-block

Pull block updates from Jens Axboe:

 - clean up how we pass around gfp_t and
   blk_mq_req_flags_t (Christoph)

 - prepare us to defer scheduler attach (Christoph)

 - clean up drivers handling of bounce buffers (Christoph)

 - fix timeout handling corner cases (Christoph/Bart/Keith)

 - bcache fixes (Coly)

 - prep work for bcachefs and some block layer optimizations (Kent).

 - convert users of bio_sets to using embedded structs (Kent).

 - fixes for the BFQ io scheduler (Paolo/Davide/Filippo)

 - lightnvm fixes and improvements (Matias, with contributions from Hans
   and Javier)

 - adding discard throttling to blk-wbt (me)

 - sbitmap blk-mq-tag handling (me/Omar/Ming).

 - remove the sparc jsflash block driver, acked by DaveM.

 - Kyber scheduler improvement from Jianchao, making it more friendly
   wrt merging.

 - conversion of symbolic proc permissions to octal, from Joe Perches.
   Previously the block parts were a mix of both.

 - nbd fixes (Josef and Kevin Vigor)

 - unify how we handle the various kinds of timestamps that the block
   core and utility code uses (Omar)

 - three NVMe pull requests from Keith and Christoph, bringing AEN to
   feature completeness, file backed namespaces, cq/sq lock split, and
   various fixes

 - various little fixes and improvements all over the map

* tag 'for-4.18/block-20180603' of git://git.kernel.dk/linux-block: (196 commits)
  blk-mq: update nr_requests when switching to 'none' scheduler
  block: don't use blocking queue entered for recursive bio submits
  dm-crypt: fix warning in shutdown path
  lightnvm: pblk: take bitmap alloc. out of critical section
  lightnvm: pblk: kick writer on new flush points
  lightnvm: pblk: only try to recover lines with written smeta
  lightnvm: pblk: remove unnecessary bio_get/put
  lightnvm: pblk: add possibility to set write buffer size manually
  lightnvm: fix partial read error path
  lightnvm: proper error handling for pblk_bio_add_pages
  lightnvm: pblk: fix smeta write error path
  lightnvm: pblk: garbage collect lines with failed writes
  lightnvm: pblk: rework write error recovery path
  lightnvm: pblk: remove dead function
  lightnvm: pass flag on graceful teardown to targets
  lightnvm: pblk: check for chunk size before allocating it
  lightnvm: pblk: remove unnecessary argument
  lightnvm: pblk: remove unnecessary indirection
  lightnvm: pblk: return NVM_ error on failed submission
  lightnvm: pblk: warn in case of corrupted write buffer
  ...
 2018-06-04 07:58:06 -07:00
Hans de Goede
2cfce3a86b libata: Drop SanDisk SD7UB3Q*G1001 NOLPM quirk 
Commit 184add2ca2 ("libata: Apply NOLPM quirk for SanDisk
SD7UB3Q*G1001 SSDs") disabled LPM for SanDisk SD7UB3Q*G1001 SSDs.

This has lead to several reports of users of that SSD where LPM
was working fine and who know have a significantly increased idle
power consumption on their laptops.

Likely there is another problem on the T450s from the original
reporter which gets exposed by the uncore reaching deeper sleep
states (higher PC-states) due to LPM being enabled. The problem as
reported, a hardfreeze about once a day, already did not sound like
it would be caused by LPM and the reports of the SSD working fine
confirm this. The original reporter is ok with dropping the quirk.

A X250 user has reported the same hard freeze problem and for him
the problem went away after unrelated updates, I suspect some GPU
driver stack changes fixed things.

TL;DR: The original reporters problem were triggered by LPM but not
an LPM issue, so drop the quirk for the SSD in question.

BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1583207
Cc: stable@vger.kernel.org
Cc: Richard W.M. Jones <rjones@redhat.com>
Cc: Lorenzo Dalrio <lorenzo.dalrio@gmail.com>
Reported-by: Lorenzo Dalrio <lorenzo.dalrio@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: "Richard W.M. Jones" <rjones@redhat.com>
 2018-05-31 08:45:37 -07:00
Christoph Hellwig
01fc27d969 libata: remove ata_scsi_timed_out 
As far as I can tell this function can't even be called any more, given
that ATA implements its own eh_strategy_handler with ata_scsi_error, which
never calls ->eh_timed_out.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
 2018-05-29 08:47:40 -06:00
Dan Carpenter
18c9a99bce libata: zpodd: small read overflow in eject_tray() 
We read from the cdb[] buffer in ata_exec_internal_sg().  It has to be
ATAPI_CDB_LEN (16) bytes long, but this buffer is only 12 bytes.

Fixes: 213342053d ("libata: handle power transition of ODD")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: stable@vger.kernel.org
 2018-05-29 06:48:54 -07:00
Mika Westerberg
4544e403eb ahci: Add PCI ID for Cannon Lake PCH-LP AHCI 
This one should be using the default LPM policy for mobile chipsets so
add the PCI ID to the driver list of supported revices.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: stable@vger.kernel.org
 2018-05-24 07:03:32 -07:00
Sudip Mukherjee
136d769e0b libata: blacklist Micron 500IT SSD with MU01 firmware 
While whitelisting Micron M500DC drives, the tweaked blacklist entry
enabled queued TRIM from M500IT variants also. But these do not support
queued TRIM. And while using those SSDs with the latest kernel we have
seen errors and even the partition table getting corrupted.

Some part from the dmesg:
[    6.727384] ata1.00: ATA-9: Micron_M500IT_MTFDDAK060MBD, MU01, max UDMA/133
[    6.727390] ata1.00: 117231408 sectors, multi 16: LBA48 NCQ (depth 31/32), AA
[    6.741026] ata1.00: supports DRM functions and may not be fully accessible
[    6.759887] ata1.00: configured for UDMA/133
[    6.762256] scsi 0:0:0:0: Direct-Access     ATA      Micron_M500IT_MT MU01 PQ: 0 ANSI: 5

and then for the error:
[  120.860334] ata1.00: exception Emask 0x1 SAct 0x7ffc0007 SErr 0x0 action 0x6 frozen
[  120.860338] ata1.00: irq_stat 0x40000008
[  120.860342] ata1.00: failed command: SEND FPDMA QUEUED
[  120.860351] ata1.00: cmd 64/01:00:00:00:00/00:00:00:00:00/a0 tag 0 ncq dma 512 out
         res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x5 (timeout)
[  120.860353] ata1.00: status: { DRDY }
[  120.860543] ata1: hard resetting link
[  121.166128] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[  121.166376] ata1.00: supports DRM functions and may not be fully accessible
[  121.186238] ata1.00: supports DRM functions and may not be fully accessible
[  121.204445] ata1.00: configured for UDMA/133
[  121.204454] ata1.00: device reported invalid CHS sector 0
[  121.204541] sd 0:0:0:0: [sda] tag#18 UNKNOWN(0x2003) Result: hostbyte=0x00 driverbyte=0x08
[  121.204546] sd 0:0:0:0: [sda] tag#18 Sense Key : 0x5 [current]
[  121.204550] sd 0:0:0:0: [sda] tag#18 ASC=0x21 ASCQ=0x4
[  121.204555] sd 0:0:0:0: [sda] tag#18 CDB: opcode=0x93 93 08 00 00 00 00 00 04 28 80 00 00 00 30 00 00
[  121.204559] print_req_error: I/O error, dev sda, sector 272512

After few reboots with these errors, and the SSD is corrupted.
After blacklisting it, the errors are not seen and the SSD does not get
corrupted any more.

Fixes: 243918be63 ("libata: Do not blacklist Micron M500DC")
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Cc: stable@vger.kernel.org
Signed-off-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
 2018-05-21 08:24:20 -07:00
François Cami
76936e9a6d libata: Apply NOLPM quirk for SAMSUNG PM830 CXM13D1Q. 
Without this patch the drive errors out regularly:

[    1.090154] ata1.00: ATA-8: SAMSUNG SSD PM830 mSATA 256GB,
CXM13D1Q, max UDMA/133
(...)
[  345.154996] ata1.00: exception Emask 0x40 SAct 0x0 SErr 0xc0800 action 0x6
[  345.155006] ata1.00: irq_stat 0x40000001
[  345.155013] ata1: SError: { HostInt CommWake 10B8B }
[  345.155018] ata1.00: failed command: SET FEATURES
[  345.155032] ata1.00: cmd ef/05:e1:00:00:00/00:00:00:00:00/40 tag 7
                        res 51/04:e1:00:00:00/00:00:00:00:00/40 Emask 0x41 (internal error)
[  345.155038] ata1.00: status: { DRDY ERR }
[  345.155042] ata1.00: error: { ABRT }
[  345.155051] ata1: hard resetting link
[  345.465661] ata1: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
[  345.466955] ata1.00: configured for UDMA/133
[  345.467085] ata1: EH complete

Signed-off-by: François Cami <fcami@fedoraproject.org>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
 2018-05-14 08:31:51 -07:00
Jens Axboe
88e10092f6 sata_fsl: use the right type for tag bitshift 
Since ATA_TAG_INTERNAL is now > 31 bits, we need to extend the
type to ULL to cover 32/64-bit cases.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Tejun Heo <tj@kernel.org>
 2018-05-14 08:14:21 -07:00
Jens Axboe
e2d1f8a06e ahci: enable full queue depth of 32 
This changes the AHCI queue depth from 31 to 32, as libata now
fully supports it. Now regular IO requests can utilize the full
tag space of SATA, not just 31. For IOPS constrained workloads,
this can result in a ~3% bump in performance.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Tejun Heo <tj@kernel.org>
 2018-05-11 13:10:44 -07:00
Jens Axboe
69278f790b libata: don't clamp queue depth to ATA_MAX_QUEUE - 1 
Use what the driver provides, which will still be ATA_MAX_QUEUE - 1
at most anyway.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Tejun Heo <tj@kernel.org>
 2018-05-11 13:10:44 -07:00
Jens Axboe
28361c4036 libata: add extra internal command 
Bump the internal tag to 32, instead of stealing the last tag in
our regular command space. This works just fine, since we don't
actually need a separate hardware tag for this. Internal commands
cannot coexist with NCQ commands.

As a bonus, we get rid of the special casing of what tag to use
for the internal command.

This is in preparation for utilizing all 32 commands for normal IO.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Tejun Heo <tj@kernel.org>
 2018-05-11 13:10:44 -07:00
Jens Axboe
ba80c3a572 sata_nv: set host can_queue count appropriately 
libata limits the max limit for drivers to 31 anyway. We'll soon
allow drivers to actually go to QD=32, but that might require some
driver modifications. Before we do that, ensure that sata_nv limits
the depth to 31.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Tejun Heo <tj@kernel.org>
 2018-05-11 13:10:43 -07:00
Jens Axboe
9d207accca libata: remove assumption that ATA_MAX_QUEUE - 1 is the max 
In a few spots we iterate to ATA_MAX_QUEUE -1, including internal
knowledge that the last tag is the internal tag. Remove this
assumption.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Tejun Heo <tj@kernel.org>
 2018-05-11 13:10:43 -07:00
Jens Axboe
2e2cc676ce libata: use ata_tag_internal() consistently 
Some check for the value directly, use the provided helper instead.
Also make it return a bool, since that's what it does.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Tejun Heo <tj@kernel.org>
 2018-05-11 13:10:43 -07:00
Jens Axboe
e3ed893964 libata: bump ->qc_active to a 64-bit type 
This is in preparation for allowing full usage of the tag space,
which means that our reserved error handling command will be
using an internal tag value of 32. This doesn't fit in a u32, so
move to a u64.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Tejun Heo <tj@kernel.org>
 2018-05-11 13:10:43 -07:00
Jens Axboe
4e5b6260cc libata: convert core and drivers to ->hw_tag usage 
Anything that goes to the hardware should use ->hw_tag, anything
related to internal lookup should be using ->tag.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Tejun Heo <tj@kernel.org>
 2018-05-11 13:10:43 -07:00
Jens Axboe
5ac40790b4 libata: introduce notion of separate hardware tags 
Rigth now these are the same, but drivers should be using ->hw_tag
for their command setup and issue.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Tejun Heo <tj@kernel.org>
 2018-05-11 13:10:42 -07:00
Damien Le Moal
804689ad2d libata: Fix command retry decision 
For failed commands with valid sense data (e.g. NCQ commands),
scsi_check_sense() is used in ata_analyze_tf() to determine if the
command can be retried. In such case, rely on this decision and ignore
the command error mask based decision done in ata_worth_retry().

This fixes useless retries of commands such as unaligned writes on zoned
disks (TYPE_ZAC).

Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
 2018-05-10 11:43:20 -07:00
Damien Le Moal
7eb49509dd libata: Honor RQF_QUIET flag 
Currently, libata ignores requests RQF_QUIET flag and print error
messages for failed commands, regardless if this flag is set in the
command request. Fix this by introducing the ata_eh_quiet() function and
using this function in ata_eh_link_autopsy() to determine if the EH
context should be quiet. This works by counting the number of failed
commands and the number of commands with the quiet flag set. If both
numbers are equal, the the EH context can be set to quiet and all error
messages suppressed. Otherwise, only the error messages for the failed
commands are suppressed and the link Emask and irq_stat messages printed.

Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
 2018-05-10 11:43:20 -07:00
Damien Le Moal
07b9b6d6e1 libata: Make ata_dev_set_mode() less verbose 
For a successful setting of the device transfer speed mode in
ata_dev_set_mode(), do not print the message
"ataX.XX: configured for xxx" if the EH context has the quiet flag set,
unless the device port is being reset.

This preserves the output of the message during device scan but removes
it in the case of a simple device revalidation such as trigerred by
enabling the NCQ I/O priority feature of the device
e.g. echo 1 > /sys/block/sdxx/device/ncq_iprio_enable

Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
 2018-05-10 11:43:20 -07:00
Damien Le Moal
54fb131b32 libata: Fix ata_err_string() 
Add proper error string output for ATA_ERR_NCQ and ATA_ERR_NODEV_HINT
instead of returning "unknown error".

Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
 2018-05-10 11:43:20 -07:00
Damien Le Moal
79487259a4 libata: Fix comment typo in ata_eh_analyze_tf() 
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
 2018-05-10 11:43:19 -07:00
Christoph Hellwig
258c9fded4 sata_nv: don't use block layer bounce buffer 
sata_nv sets the block bounce limit to the reduce dma mask for ATAPI
devices, which means that the iommu or swiotlb already take care of
the bounce buffering, and the block bouncing can be removed.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
 2018-05-10 11:37:28 -07:00
Tejun Heo
322579dcc8 libata: Blacklist some Sandisk SSDs for NCQ 
Sandisk SSDs SD7SN6S256G and SD8SN8U256G are regularly locking up
regularly under sustained moderate load with NCQ enabled.  Blacklist
for now.

Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Dave Jones <davej@codemonkey.org.uk>
Cc: stable@vger.kernel.org
 2018-05-08 14:28:01 -07:00
Andy Shevchenko
dc85ca573b ata: hpt37x: Convert to use match_string() helper 
The new helper returns index of the matching string in an array.
We are going to use it here.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
 2018-05-07 08:50:30 -07:00
Mathieu Malaterre
0d74d872c3 driver core: add __printf verification to __ata_ehi_pushv_desc 
__printf is useful to verify format and arguments. Remove the following
warning (with W=1):

  drivers/ata/libata-eh.c:183:10: warning: function might be possible candidate for ‘gnu_printf’ format attribute [-Wsuggest-attribute=format]

Signed-off-by: Mathieu Malaterre <malat@debian.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
 2018-05-07 08:32:20 -07:00
Colin Ian King
7e437d6151 ata: fix spelling mistake: "directon" -> "direction" 
Trivial fix to spelling mistake in sil24_cerr_info message text

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
 2018-05-01 10:39:49 -07:00
Hans de Goede
184add2ca2 libata: Apply NOLPM quirk for SanDisk SD7UB3Q*G1001 SSDs 
Richard Jones has reported that using med_power_with_dipm on a T450s
with a Sandisk SD7UB3Q256G1001 SSD (firmware version X2180501) is
causing the machine to hang.

Switching the LPM to max_performance fixes this, so it seems that
this Sandisk SSD does not handle LPM well.

Note in the past there have been bug-reports about the following
Sandisk models not working with min_power, so we may need to extend
the quirk list in the future: name - firmware
Sandisk SD6SB2M512G1022I   - X210400
Sandisk SD6PP4M-256G-1006  - A200906

Cc: stable@vger.kernel.org
Cc: Richard W.M. Jones <rjones@redhat.com>
Reported-and-tested-by: Richard W.M. Jones <rjones@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
 2018-04-26 14:08:55 -07:00
Hans de Goede
b5b4d3a52c libata: Apply NOLPM quirk for SAMSUNG MZMPC128HBFU-000MV SSD 
Kevin Shanahan reports the following repeating errors when using LPM,
causing long delays accessing the disk:

  Apr 23 10:21:43 link kernel: ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x50000 action 0x6 frozen
  Apr 23 10:21:43 link kernel: ata1: SError: { PHYRdyChg CommWake }
  Apr 23 10:21:43 link kernel: ata1.00: failed command: WRITE DMA
  Apr 23 10:21:43 link kernel: ata1.00: cmd ca/00:08:60:5d:cd/00:00:00:00:00/e1 tag 9 dma 4096 out
                                        res 50/01:01:01:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
  Apr 23 10:21:43 link kernel: ata1.00: status: { DRDY }
  Apr 23 10:21:43 link kernel: ata1.00: error: { AMNF }
  Apr 23 10:21:43 link kernel: ata1: hard resetting link
  Apr 23 10:21:43 link kernel: ata1: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
  Apr 23 10:21:43 link kernel: ata1.00: configured for UDMA/133
  Apr 23 10:21:43 link kernel: ata1: EH complete

These go away when switching from med_power_with_dipm to medium_power.

This is somewhat weird as the PM830 datasheet explicitly mentions DIPM
being supported and the idle power-consumption is specified with DIPM
enabled.

There are many OEM customized firmware versions for the PM830, so for now
lets assume this is firmware version specific and blacklist LPM based on
the firmware version.

Cc: Kevin Shanahan <kevin@shanahan.id.au>
Reported-by: Kevin Shanahan <kevin@shanahan.id.au>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
 2018-04-26 11:46:23 -07:00
Evan Wang
daa2e3bdbb ata: ahci: mvebu: override ahci_stop_engine for mvebu AHCI 
There is an issue(Errata Ref#226) that the SATA can not be
detected via SATA Port-MultiPlayer(PMP) with following
error log:
  ata1.15: PMP product ID mismatch
  ata1.15: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
  ata1.15: Port Multiplier vendor mismatch '0x1b4b'!='0x0'
  ata1.15: PMP revalidation failed (errno=-19)

After debugging, the reason is found that the value Port-x
FIS-based Switching Control(PxFBS@0x40) become wrong.
According to design, the bits[11:8, 0] of register PxFBS
are cleared when Port Command and Status (0x18) bit[0]
changes its value from 1 to 0, i.e. falling edge of Port
Command and Status bit[0] sends PULSE that resets PxFBS
bits[11:8; 0].
So it needs a mvebu SATA WA to save the port PxFBS register
before PxCMD ST write and restore it afterwards.

This patch implements the WA in a separate function of
ahci_mvebu_stop_engine to override ahci_stop_gngine.

Signed-off-by: Evan Wang <xswang@marvell.com>
Cc: Ofer Heifetz <oferh@marvell.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
 2018-04-26 11:25:15 -07:00
Evan Wang
fa89f53bd7 libahci: Allow drivers to override stop_engine 
Marvell armada37xx, armada7k and armada8k share the same
AHCI sata controller IP, and currently there is an issue
(Errata Ref#226)that the SATA can not be detected via SATA
Port-MultiPlayer(PMP). After debugging, the reason is
found that the value of Port-x FIS-based Switching Control
(PxFBS@0x40) became wrong.
According to design, the bits[11:8, 0] of register PxFBS
are cleared when Port Command and Status (0x18) bit[0]
changes its value from 1 to 0, i.e. falling edge of Port
Command and Status bit[0] sends PULSE that resets PxFBS
bits[11:8; 0].
So it needs save the port PxFBS register before PxCMD
ST write and restore the port PxFBS register afterwards
in ahci_stop_engine().

This commit allows drivers to override ahci_stop_engine
behavior for use by the Marvell AHCI driver(and potentially
other drivers in the future).

Signed-off-by: Evan Wang <xswang@marvell.com>
Cc: Ofer Heifetz <oferh@marvell.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
 2018-04-26 11:25:04 -07:00
Jason Yan
b6240a4df0 scsi: libsas: add transport class for ATA devices 
Now ata devices attached with sas controller do not have transport
class, so that we can not see any information of these ata devices in
/sys/class/ata_port(or ata_link or ata_device).

Add transport class for the ata devices attached with sas controller.
The /sys/class directory will show the infomation of the ata devices
as follows:

localhost:/sys/class # ls ata*
ata_device:
dev1.0  dev2.0

ata_link:
link1  link2

ata_port:
ata1  ata2

No functional change of the device scanning and io path. The ata
transport class was deleted when destroying the sas devices.

Signed-off-by: Jason Yan <yanaijie@huawei.com>
CC: Dan Williams <dan.j.williams@intel.com>
CC: Tejun Heo <tj@kernel.org>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
 2018-04-18 19:32:51 -04:00
Kunihiko Hayashi
fd17ed684b Revert "ata: ahci-platform: add reset control support" 
This reverts commit f0f56716fc.

According to Thierry's view,
https://www.spinics.net/lists/linux-ide/msg55357.html
some hardware-specific drivers already use their own resets,
and the common reset might make a path to occur double controls of resets.

For now, revert the commit that adds reset control support to ahci-platform,
and hold until the solution is confirmed not be affect all hardware-specific
drivers.

Fixes: f0f56716fc ("ata: ahci-platform: add reset control support")
Reported-by: Thierry Reding <thierry.reding@gmail.com>
Suggested-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
 2018-04-09 15:10:50 -07:00
Linus Torvalds
a23867f1d2 Merge branch 'for-4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata 
Pull libata updates from Tejun Heo:
 "Nothing too interesting.

  The biggest change is refcnting fix for ata_host - the bug is recent
  and can only be triggered on controller hotplug, so very few are
  hitting it.

  There also are a number of trivial license / error message changes and
  some hardware specific changes"

* 'for-4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata: (23 commits)
  ahci: imx: add the imx8qm ahci sata support
  libata: ensure host is free'd on error exit paths
  ata: ahci-platform: add reset control support
  ahci: imx: fix the build warning
  ata: add Amiga Gayle PATA controller driver
  ahci: imx: add the imx6qp ahci sata support
  ata: change Tegra124 to Tegra
  ata: ahci_tegra: Add AHCI support for Tegra210
  ata: ahci_tegra: disable DIPM
  ata: ahci_tegra: disable devslp for Tegra124
  ata: ahci_tegra: initialize regulators from soc struct
  ata: ahci_tegra: Update initialization sequence
  dt-bindings: Tegra210: add binding documentation
  libata: add refcounting to ata_host
  pata_bk3710: clarify license version and use SPDX header
  pata_falcon: clarify license version and use SPDX header
  pata_it821x: Delete an error message for a failed memory allocation in it821x_firmware_command()
  pata_macio: Delete an error message for a failed memory allocation in two functions
  pata_mpc52xx: Delete an error message for a failed memory allocation in mpc52xx_ata_probe()
  sata_dwc_460ex: Delete an error message for a failed memory allocation in sata_dwc_port_start()
  ...
 2018-04-03 17:42:25 -07:00
Linus Torvalds
e40dc66220 LED updates for 4.17-rc1 
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Merge tag 'leds_for_4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds

Pull LED updates from Jacek Anaszewski:
 "New LED class driver:
   - add driver for Mellanox regmap LEDs

  Improvement to ledtrig-disk:
   - extend disk trigger for reads and writes

  Improvements and fixes to existing LED class drivers:
   - add more product/board names for PC Engines APU2
   - fix wrong dmi_match on PC Engines APU LEDs
   - clarify chips supported by LM355x driver
   - fix Kconfig text for MLXCPLD, SYSCON, MC13783, NETXBIG
   - allow leds-mlxcpld compilation for 32 bit arch"

* tag 'leds_for_4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds:
  leds: Fix wrong dmi_match on PC Engines APU LEDs
  leds: Extends disk trigger for reads and writes
  leds: Add more product/board names for PC Engines APU2
  leds: add driver for support Mellanox regmap LEDs for BMC and x86 platform
  leds: fix Kconfig text for MLXCPLD, SYSCON, MC13783, NETXBIG
  leds: Clarify supported chips by LM355x driver
  leds: leds-mlxcpld: Allow compilation for 32 bit arch
 2018-04-03 12:38:19 -07:00
Linus Torvalds
f5a8eb632b arch: remove obsolete architecture ports 
This removes the entire architecture code for blackfin, cris, frv, m32r,
 metag, mn10300, score, and tile, including the associated device drivers.
 
 I have been working with the (former) maintainers for each one to ensure
 that my interpretation was right and the code is definitely unused in
 mainline kernels. Many had fond memories of working on the respective
 ports to start with and getting them included in upstream, but also saw
 no point in keeping the port alive without any users.
 
 In the end, it seems that while the eight architectures are extremely
 different, they all suffered the same fate: There was one company
 in charge of an SoC line, a CPU microarchitecture and a software
 ecosystem, which was more costly than licensing newer off-the-shelf
 CPU cores from a third party (typically ARM, MIPS, or RISC-V). It seems
 that all the SoC product lines are still around, but have not used the
 custom CPU architectures for several years at this point. In contrast,
 CPU instruction sets that remain popular and have actively maintained
 kernel ports tend to all be used across multiple licensees.
 
 The removal came out of a discussion that is now documented at
 https://lwn.net/Articles/748074/. Unlike the original plans, I'm not
 marking any ports as deprecated but remove them all at once after I made
 sure that they are all unused. Some architectures (notably tile, mn10300,
 and blackfin) are still being shipped in products with old kernels,
 but those products will never be updated to newer kernel releases.
 
 After this series, we still have a few architectures without mainline
 gcc support:
 
 - unicore32 and hexagon both have very outdated gcc releases, but the
   maintainers promised to work on providing something newer. At least
   in case of hexagon, this will only be llvm, not gcc.
 
 - openrisc, risc-v and nds32 are still in the process of finishing their
   support or getting it added to mainline gcc in the first place.
   They all have patched gcc-7.3 ports that work to some degree, but
   complete upstream support won't happen before gcc-8.1. Csky posted
   their first kernel patch set last week, their situation will be similar.
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Merge tag 'arch-removal' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic

Pul removal of obsolete architecture ports from Arnd Bergmann:
 "This removes the entire architecture code for blackfin, cris, frv,
  m32r, metag, mn10300, score, and tile, including the associated device
  drivers.

  I have been working with the (former) maintainers for each one to
  ensure that my interpretation was right and the code is definitely
  unused in mainline kernels. Many had fond memories of working on the
  respective ports to start with and getting them included in upstream,
  but also saw no point in keeping the port alive without any users.

  In the end, it seems that while the eight architectures are extremely
  different, they all suffered the same fate: There was one company in
  charge of an SoC line, a CPU microarchitecture and a software
  ecosystem, which was more costly than licensing newer off-the-shelf
  CPU cores from a third party (typically ARM, MIPS, or RISC-V). It
  seems that all the SoC product lines are still around, but have not
  used the custom CPU architectures for several years at this point. In
  contrast, CPU instruction sets that remain popular and have actively
  maintained kernel ports tend to all be used across multiple licensees.

  [ See the new nds32 port merged in the previous commit for the next
    generation of "one company in charge of an SoC line, a CPU
    microarchitecture and a software ecosystem"   - Linus ]

  The removal came out of a discussion that is now documented at
  https://lwn.net/Articles/748074/. Unlike the original plans, I'm not
  marking any ports as deprecated but remove them all at once after I
  made sure that they are all unused. Some architectures (notably tile,
  mn10300, and blackfin) are still being shipped in products with old
  kernels, but those products will never be updated to newer kernel
  releases.

  After this series, we still have a few architectures without mainline
  gcc support:

   - unicore32 and hexagon both have very outdated gcc releases, but the
     maintainers promised to work on providing something newer. At least
     in case of hexagon, this will only be llvm, not gcc.

   - openrisc, risc-v and nds32 are still in the process of finishing
     their support or getting it added to mainline gcc in the first
     place. They all have patched gcc-7.3 ports that work to some
     degree, but complete upstream support won't happen before gcc-8.1.
     Csky posted their first kernel patch set last week, their situation
     will be similar

  [ Palmer Dabbelt points out that RISC-V support is in mainline gcc
    since gcc-7, although gcc-7.3.0 is the recommended minimum  - Linus ]"

This really says it all:

 2498 files changed, 95 insertions(+), 467668 deletions(-)

* tag 'arch-removal' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: (74 commits)
  MAINTAINERS: UNICORE32: Change email account
  staging: iio: remove iio-trig-bfin-timer driver
  tty: hvc: remove tile driver
  tty: remove bfin_jtag_comm and hvc_bfin_jtag drivers
  serial: remove tile uart driver
  serial: remove m32r_sio driver
  serial: remove blackfin drivers
  serial: remove cris/etrax uart drivers
  usb: Remove Blackfin references in USB support
  usb: isp1362: remove blackfin arch glue
  usb: musb: remove blackfin port
  usb: host: remove tilegx platform glue
  pwm: remove pwm-bfin driver
  i2c: remove bfin-twi driver
  spi: remove blackfin related host drivers
  watchdog: remove bfin_wdt driver
  can: remove bfin_can driver
  mmc: remove bfin_sdh driver
  input: misc: remove blackfin rotary driver
  input: keyboard: remove bf54x driver
  ...
 2018-04-02 20:20:12 -07:00
Richard Zhu
027fa4dee9 ahci: imx: add the imx8qm ahci sata support 
- There are three PHY lanes on iMX8QM, and can be
  used in the following three cases
    1. a two lanes PCIE_A, and a single lane SATA.
    2. a single lane PCIE_A, a single lane PCIE_B
    and a single lane SATA.
    3. a two lanes PCIE_A, and a single lane PCIE_B.
  The configuration of the iMX8QM AHCI SATA is relied
  on the usage of PCIE ports in the case 1 and 2.
  Use standalone iMX8 AHCI SATA probe and enable
  functions to enable iMX8QM AHCI SATA support.
- To save power consumption, PHY CLKs can be gated
  off after the configurations are done.
- The impedance ratio should be configured refer to
  differnet REXT values.
  0x6c <--> REXT value is 85Ohms
  0x80 (default value) <--> REXT value is 100Ohms.
  In general, REXT value should be 85ohms in standalone
  PCIE HW board design, and 100ohms in SATA standalone
  HW board design.
  When the PCIE and the SATA are enabled simultaneously
  in the HW board design. The REXT value would be set
  to 85ohms.
  Configure the SATA PHY impedance ratio to 0x6c in
  default.

Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
 2018-03-29 06:43:55 -07:00
Colin Ian King
dafd6c4963 libata: ensure host is free'd on error exit paths 
The host structure is not being kfree'd on two error exit paths
leading to memory leaks. Add in new err_free label and kfree host.

Detected by CoverityScan, CID#1466103 ("Resource leak")

Fixes: 2623c7a5f2 ("libata: add refcounting to ata_host")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
 2018-03-27 06:56:02 -07:00
Kunihiko Hayashi
f0f56716fc ata: ahci-platform: add reset control support 
Add support to get and control a list of resets for the device
as optional and shared. These resets must be kept de-asserted until
the device is enabled.

This is specified as shared because some SoCs like UniPhier series
have common reset controls with all ahci controller instances.

Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
 2018-03-26 07:40:01 -07:00