Many SCSI HBAs support a hostwide tagset, whereby each command submitted to
the HW from all submission queues must have a unique tag identifier.
Normally this unique tag will be in the range [0, max queue], where "max
queue" is the depth of each of the submission queues.
Add support for this hostwide tag feature, via module parameter
"host_max_queue". A non-zero value means that the feature is enabled. In
this case, the submission queues are not exposed to upper layer, i.e. from
blk-mq prespective, the device has a single hw queue. There are 2 reasons
for this:
a. It is assumed that the host can support nr_hw_queues * can_queue
commands, but this is not true for hostwide tags
b. For nr_hw_queues != 0, the request tag is not unique over all HW
queues, and some HBA drivers want to use this tag for the hostwide tag
However, like many SCSI HBA drivers today - megaraid sas being an example -
the full set of HW submission queues are still used in the LLDD driver. So
instead of using a complicated "reply_map" to create a per-CPU submission
queue mapping like megaraid_sas (as it depends on a PCI device + MSIs) -
use a simple algorithm:
hwq = cpu % queue count
If the host_max_queue param is set non-zero, then the max queue depth is
fixed at this value also.
If and when hostwide shared tags are supported in blk-mq/scsi mid-layer,
then the policy to set nr_hw_queues = 0 for hostwide tags can be revised.
Link: https://lore.kernel.org/r/1594297400-24756-3-git-send-email-john.garry@huawei.com
Acked-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Abort failed commands in completion path. This avoids having to wait for
block layer timeouts and triggering the SCSI error handling thread.
Link: https://lore.kernel.org/r/1594627471-235395-2-git-send-email-john.garry@huawei.com
Signed-off-by: Luo Jiaxing <luojiaxing@huawei.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Add inline encryption support to ufs-mediatek.
The standards-compliant parts, such as querying the crypto capabilities and
enabling crypto for individual UFS requests, are already handled by
ufshcd-crypto.c, which itself is wired into the blk-crypto framework.
However MediaTek UFS host requires a vendor-specific hce_enable operation
to allow crypto-related registers being accessed normally in kernel. After
this step, MediaTek UFS host can work as standard-compliant host for
inline-encryption related functions.
Link: https://lore.kernel.org/r/20200712003226.7593-1-stanley.chu@mediatek.com
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The pr_fmt() at the top of the file already includes the __func__ so we can
remove the duplicative "cxgbi_conn_init_pdu:" from the string here. Now it
all fits on one line as well.
Link: https://lore.kernel.org/r/20200713105100.GA251988@mwanda
Acked-by: Varun Prakash <varun@chelsio.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
kmem_cache_destroy() and mempool_destroy() both correctly handle null
pointer parameters. There is no need to check if the parameter is null
before calling these functions.
Link: https://lore.kernel.org/r/1594307167-8807-1-git-send-email-xianting_tian@126.com
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Xianting Tian <xianting_tian@126.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Currently pointer tdata is being dereferenced on the initialization of
pointer skb before tdata is null checked. This could lead to a potential
null pointer dereference. Fix this by dereferencing tdata after tdata has
been null pointer sanity checked.
Link: https://lore.kernel.org/r/20200709135217.1408105-1-colin.king@canonical.com
Fixes: e33c248228 ("scsi: cxgb4i: Add support for iSCSI segmentation offload")
Addresses-Coverity: ("Dereference before null check")
Acked-by: Varun Prakash <varun@chelsio.com>
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Add missing setup_xfer_req() call in ufshcd_issue_devman_upiu_cmd() in
ufs-bsg path. Relocate existing setup_xfer_req() calls to a common place,
i.e., ufshcd_send_command(), to simplify the driver.
Link: https://lore.kernel.org/r/20200706060707.32608-3-stanley.chu@mediatek.com
Acked-by: Avri Altman <Avri.Altman@wdc.com>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Simplify recording command completion time in __ufshcd_transfer_req_compl()
by assigning lrbp->compl_time_stamp in a unified location.
Link: https://lore.kernel.org/r/20200706060707.32608-2-stanley.chu@mediatek.com
Acked-by: Avri Altman <Avri.Altman@wdc.com>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
T5/T6 adapters support iSCSI segmentation offload.
To transmit iSCSI PDUs using ISO driver provides iSCSI header and data
scatterlist to the adapter, adapter forms multiple iSCSI PDUs and transmits
them.
[mkp: checkpatch]
Link: https://lore.kernel.org/r/1593448871-2972-1-git-send-email-varun@chelsio.com
Signed-off-by: Varun Prakash <varun@chelsio.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
For additional robustness in the face of Hyper-V errors or malicious
behavior, validate all values that originate from packets that Hyper-V has
sent to the guest. Ensure that invalid values cannot cause data being
copied out of the bounds of the source buffer when calling memcpy. Ensure
that outgoing packets do not have any leftover guest memory that has not
been zeroed out.
Link: https://lore.kernel.org/r/20200706160928.53049-1-lkmlabelt@gmail.com
Cc: James E.J. Bottomley <jejb@linux.ibm.com>
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Cc: linux-scsi@vger.kernel.org
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Signed-off-by: Andres Beltran <lkmlabelt@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The expression start_idx - dbg_cnt is evaluated using unsigned int
arthithmetic (since these variables are unsigned ints) and hence can never
be less than zero, so the less than comparison is never true. Rewrite the
expression to check for start_idx being less than dbg_cnt.
After the logic was corrected, temp_idx wasn't working correctly. So fix it
as well.
Link: https://lore.kernel.org/r/20200706204246.130416-1-jsmart2021@gmail.com
Fixes: 372c187b8a ("scsi: lpfc: Add an internal trace log buffer")
CC: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Addresses-Coverity: ("Unsigned compared against 0")
With certain platforms its possible pci_alloc_irq_vectors() may affinitize
irq vectors to multiple (all?) CPUs. The driver is currently assuming
exclusivity and vectors being doled out to different CPUs and is assigning
primary ownership of each vector to the first CPU in the mask. The code
doesn't bother to check if the CPU already owns a vector and will
unconditionally overwrite the CPU to vector mapping. This causes the
relationships between eq's and cq's to get confused and gets worse when
CPUs start to offline. The net results are interrupts are skipped resulting
in mailbox timeouts and there are oopses in CPU offling flows.
Fix this changing up the primary vector assignment. Now assign the eq to a
CPU only if it is the CPU in the mask that does not have a prior
assignment. And once the primary ownership is assigned, break from the
loop. For CPUs that may have been set before but not the primary owner, the
lpfc_cpu_affinity_check() routine will balance the CPU to eq assignment.
Link: https://lore.kernel.org/r/20200706204230.130363-1-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Wire up ufshcd.c with the UFS Crypto API, the block layer inline encryption
additions and the keyslot manager.
Many existing inline crypto devices require some additional behaviour not
specified in the UFSHCI v2.1 specification - as such the vendor specific
drivers will need to be updated where necessary to make it possible to use
those devices. Some of these changes have already been proposed upstream,
such as for the Qualcomm 845 SoC at
https://lkml.kernel.org/linux-scsi/20200501045111.665881-1-ebiggers@kernel.org/
and for ufs-mediatek at
https://lkml.kernel.org/linux-scsi/20200304022101.14165-1-stanley.chu@mediatek.com/
This patch has been tested on the db845c, sm8150-mtp and sm8250-mtp
(which have Qualcomm chipsets) and on some mediatek chipsets using these
aforementioned vendor specific driver updates.
Link: https://lore.kernel.org/r/20200706200414.2027450-4-satyat@google.com
Reviewed-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Stanley Chu <stanley.chu@mediatek.com>
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Satya Tangirala <satyat@google.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Introduce functions to manipulate UFS inline encryption hardware in line
with the JEDEC UFSHCI v2.1 specification and to work with the block keyslot
manager.
The UFS crypto API will assume by default that a vendor driver doesn't
support UFS crypto, even if the hardware advertises the capability, because
a lot of hardware requires some special handling that's not specified in
the aforementioned JEDEC spec. Each vendor driver must explicitly set
hba->caps |= UFSHCD_CAP_CRYPTO before ufshcd_hba_init_crypto_capabilities()
is called to opt-in to UFS crypto support.
Link: https://lore.kernel.org/r/20200706200414.2027450-3-satyat@google.com
Reviewed-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Stanley Chu <stanley.chu@mediatek.com>
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Satya Tangirala <satyat@google.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Add the crypto registers and structs defined in v2.1 of the JEDEC UFSHCI
specification in preparation to add support for inline encryption to UFS.
Link: https://lore.kernel.org/r/20200706200414.2027450-2-satyat@google.com
Reviewed-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Stanley Chu <stanley.chu@mediatek.com>
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Satya Tangirala <satyat@google.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Fix smatch warning:
drivers/scsi/lpfc/lpfc_sli.c:15156 lpfc_cq_poll_hdler() warn:
inconsistent indenting
Link: https://lore.kernel.org/r/20200707150018.823350-1-colin.king@canonical.com
Reviewed-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Fixes the following W=1 kernel build warning(s):
drivers/scsi/libfc/fc_disc.c:343: warning: Function parameter or member 'disc' not described in 'fc_disc_gpn_ft_req'
drivers/scsi/libfc/fc_disc.c:343: warning: Excess function parameter 'lport' description in 'fc_disc_gpn_ft_req'
drivers/scsi/libfc/fc_disc.c:380: warning: Function parameter or member 'disc' not described in 'fc_disc_gpn_ft_parse'
drivers/scsi/libfc/fc_disc.c:380: warning: Excess function parameter 'lport' description in 'fc_disc_gpn_ft_parse'
drivers/scsi/libfc/fc_disc.c:498: warning: Function parameter or member 'disc_arg' not described in 'fc_disc_gpn_ft_resp'
drivers/scsi/libfc/fc_disc.c:498: warning: Excess function parameter 'lp_arg' description in 'fc_disc_gpn_ft_resp'
Link: https://lore.kernel.org/r/20200707140055.2956235-10-lee.jones@linaro.org
Cc: Hannes Reinecke <hare@suse.de>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
There is no need to populate an unused variable, even if the read is
required.
Fixes the following W=1 kernel build warning(s):
drivers/scsi/pcmcia/nsp_cs.c: In function ‘nsp_cs_message’:
drivers/scsi/pcmcia/nsp_cs.c:143:2: warning: function ‘nsp_cs_message’ might be a candidate for ‘gnu_printf’ format attribute [-Wsuggest-attribute=format]
drivers/scsi/pcmcia/nsp_cs.c: In function ‘nsp_fifo_count’:
drivers/scsi/pcmcia/nsp_cs.c:692:24: warning: variable ‘dummy’ set but not used [-Wunused-but-set-variable]
Link: https://lore.kernel.org/r/20200707140055.2956235-9-lee.jones@linaro.org
Cc: YOKOTA Hiroshi <yokota@netlab.is.tsukuba.ac.jp>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Fixes the following W=1 kernel build warning(s):
drivers/scsi/pcmcia/nsp_cs.c: In function ‘nsp_cs_message’:
drivers/scsi/pcmcia/nsp_cs.c:143:2: warning: function ‘nsp_cs_message’ might be a candidate for ‘gnu_printf’ format attribute [-Wsuggest-attribute=format]
drivers/scsi/pcmcia/nsp_cs.c: In function ‘nsp_fifo_count’:
drivers/scsi/pcmcia/nsp_cs.c:692:24: warning: variable ‘dummy’ set but not used [-Wunused-but-set-variable]
Link: https://lore.kernel.org/r/20200707140055.2956235-8-lee.jones@linaro.org
Cc: YOKOTA Hiroshi <yokota@netlab.is.tsukuba.ac.jp>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Looks to be unused since 2014.
Fixes the following W=1 kernel build warning(s):
drivers/scsi/aha152x.c: In function ‘datai_run’:
drivers/scsi/aha152x.c:2033:9: warning: variable ‘data’ set but not used [-Wunused-but-set-variable]
2033 | int data;
| ^~~~
Link: https://lore.kernel.org/r/20200707140055.2956235-7-lee.jones@linaro.org
Cc: "Juergen E. Fischer" <fischer@norbit.de>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Not all source files which include 'fdomain.h' make use of 'fdomain_pm_ops'
leaving them defined but unused. Mark it as __maybe_unused to tell the
compiler this is not only acceptable, but expected.
Fixes the following W=1 kernel build warning(s):
In file included from drivers/scsi/pcmcia/fdomain_cs.c:16:
drivers/scsi/fdomain.h:106:32: warning: ‘fdomain_pm_ops’ defined but not used [-Wunused-const-variable=]
106 | static const struct dev_pm_ops fdomain_pm_ops;
| ^~~~~~~~~~~~~~
Link: https://lore.kernel.org/r/20200707140055.2956235-4-lee.jones@linaro.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
According to the UFS Spec, the Flags field in the UPIU is one byte in size,
not 4. Change it to be u8.
Link: https://lore.kernel.org/r/20200706123936.24799-1-huobean@gmail.com
Tested-by: Alim Akhtar <alim.akhtar@samsung.com>
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Bean Huo <beanhuo@micron.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Fix kdoc comments format to avoid compiler warnings when compiling with
W=1.
No functional changes.
Link: https://lore.kernel.org/r/20200706123358.452180-1-damien.lemoal@wdc.com
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
In _config_request(), the variable issue_reset is set using the macro
mpt3sas_check_cmd_timeout() but otherwise unused, causing a compiler
warning when compiling with W=1. Avoid this warning by removing this
variable, using the function mpt3sas_base_check_cmd_timeout() directly
instead of the mpt3sas_check_cmd_timeout() macro.
Link: https://lore.kernel.org/r/20200706123356.452135-1-damien.lemoal@wdc.com
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Fix the kdoc comment of the function sd_zbc_check_capacity() to avoid a
compiler warning when compiling with W=1.
No functional changes.
Link: https://lore.kernel.org/r/20200706123355.452091-1-damien.lemoal@wdc.com
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Fix the kdoc comment of the function sd_ioctl_common() to avoid a compiler
warning when compiling with W=1.
No functional changes.
Link: https://lore.kernel.org/r/20200706123354.452047-1-damien.lemoal@wdc.com
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
In mega_is_bios_enabled(), the variable ret is set but unused. Remove it to
avoid a compiler warning.
Link: https://lore.kernel.org/r/20200706123352.452003-1-damien.lemoal@wdc.com
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
In megadev_ioctl(), if MEGA_HAVE_STATS is not defined, the variables
num_ldrv and ustats are unused. Conditionally define them to avoid compiler
warnings.
Link: https://lore.kernel.org/r/20200706123351.451959-1-damien.lemoal@wdc.com
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
In mega_build_cmd(), the variable epthru is set but not used. Remove it to
avoid a compiler warning.
Link: https://lore.kernel.org/r/20200706123349.451915-1-damien.lemoal@wdc.com
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The variable remainder is unused in mega_div64_32(). Remove it to avoid a
compiler warning. While at it, also fix the function documentation
comments.
Link: https://lore.kernel.org/r/20200706123348.451871-1-damien.lemoal@wdc.com
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Move function declarations to megaraid_sas.h to avoid warnings such as:
warning: no previous prototype for ‘xxx'
No functional changes.
Link: https://lore.kernel.org/r/20200706123346.451827-1-damien.lemoal@wdc.com
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Fix kernel documentation comments to avoid various warnings when compiling
with W=1.
No functional changes.
Link: https://lore.kernel.org/r/20200706123345.451783-1-damien.lemoal@wdc.com
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
IBM decided to retire a lot of the content that was previously hosted on
"developerworks", and so some of the links we've used for documentation are
now dead or redirect to some general landing page with no correlation to
what the links were meant to provide.
Change the provided link in the Kconfig file for zfcp to rather refer to
our device drivers book that we regularly update and publish for free, and
whose name hasn't been changed since it was first published.
Our hardware is also not called "IBM eServer zSeries" anymore - in fact, it
hasn't been called like that since 2006. Use a broader term that covers
different server names over time.
Lastly, add a short paragraph about how our HBAs are typically named, to
have some more tangible references.
Link: https://lore.kernel.org/r/96069b9f4c4f056a515b37e89b2bdfccc282e3d3.1593780621.git.bblock@linux.ibm.com
Reviewed-by: Julian Wiedmann <jwi@linux.ibm.com>
Reviewed-by: Steffen Maier <maier@linux.ibm.com>
Signed-off-by: Benjamin Block <bblock@linux.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Register sysfs for workqueue iscsi_destroy so that users can set CPU
affinity through "cpumask" for this workqueue to get better isolation in
cloud multi-tenant scenario.
This patch unfolded create_singlethread_workqueue(), added WQ_SYSFS and
drop __WQ_ORDERED_EXPLICIT since __WQ_ORDERED_EXPLICIT workqueue isn't
allowed to change "cpumask".
Link: https://lore.kernel.org/r/20200703051603.1473-1-bob.liu@oracle.com
Suggested-by: Mike Christie <michael.christie@oracle.com>
Reviewed-by: Lee Duncan <lduncan@suse.com>
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Bob Liu <bob.liu@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Heavy testing indicates the irqsave() spinlock around the __set_bit() is
insufficient to stop following clear_bit() calls being rarely applied
out-of-order. Also the nearby failed kzalloc() path leading to
SCSI_MLQUEUE_HOST_BUSY does not properly undo the in_use bitmap and
num_in_q, fix.
Link: https://lore.kernel.org/r/20200702145355.522283-1-dgilbert@interlog.com
Signed-off-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
There is no need for one session to flush the entire iscsi_eh_timer_workq
when removing/unblocking a session. During removal we need to make sure our
works are not running anymore. And iscsi_unblock_session only needs to make
sure its work is done. The unblock work function will flush/cancel the
works it has conflicts with.
Link: https://lore.kernel.org/r/1593632868-6808-3-git-send-email-michael.christie@oracle.com
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
If we are doing async removal of the session, we could be doing a
scsi_remove_target from the removal workqueue, and for the offload case we
could be doing a new session addition and scan to the same host. The
add/scan might then end up trying to use the target_id of the target we are
removing.
This patch just has a delay the freeing of the target_id until after the
scsi_remove_target has completed, so we know it's no longer in use.
Link: https://lore.kernel.org/r/1593632868-6808-2-git-send-email-michael.christie@oracle.com
Reviewed-by: Lee Duncan <lduncan@suse.com>
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Permit scsi_wq_xxx and scsi_tmf_xxx to be bound to different CPUs to get
better isolation.
Use alloc_workqueue with WQ_SYSFS and drop __WQ_ORDERED_EXPLICIT since a
__WQ_ORDERED_EXPLICIT workqueue isn't allowed to change the CPU mask.
Link: https://lore.kernel.org/r/20200701030745.16897-2-bob.liu@oracle.com
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Bob Liu <bob.liu@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The current logging methods typically end up requesting a reproduction with
a different logging level set to figure out what happened. This was mainly
by design to not clutter the kernel log messages with things that were
typically not interesting and the messages themselves could cause other
issues.
When looking to make a better system, it was seen that in many cases when
more data was wanted was when another message, usually at KERN_ERR level,
was logged. And in most cases, what the additional logging that was then
enabled was typically. Most of these areas fell into the discovery machine.
Based on this summary, the following design has been put in place: The
driver will maintain an internal log (256 elements of 256 bytes). The
"additional logging" messages that are usually enabled in a reproduction
will be changed to now log all the time to the internal log. A new logging
level is defined - LOG_TRACE_EVENT. When this level is set (it is not by
default) and a message marked as KERN_ERR is logged, all the messages in
the internal log will be dumped to the kernel log before the KERN_ERR
message is logged.
There is a timestamp on each message added to the internal log. However,
this timestamp is not converted to wall time when logged. The value of the
timestamp is solely to give a crude time reference for the messages.
Link: https://lore.kernel.org/r/20200630215001.70793-14-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Although the existing implementation is very good at high I/O load, on
tests involving light load, especially on only a few hardware queues,
latency was a little higher than it can be due to using workqueue
scheduling. Other tasks in the system can delay handling.
Change the lower level to use irq_poll by default which uses a softirq for
I/O completion. This gives better latency as variance in when the cq is
processed is reduced over the workqueue interface. However, as high load is
better served by not being in softirq when the CPU is loaded, work queues
are still used under high I/O load.
Link: https://lore.kernel.org/r/20200630215001.70793-13-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Currently, if there has been an issue whereby an adapter dump was taken,
there is nothing displayed to hint that it is present. Utilities must be
run and they must query for the status in order to then download the dump.
Add a message to the driver to query dump image presence when initializing
the SLI Port.
Link: https://lore.kernel.org/r/20200630215001.70793-12-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Currently the driver validates command codes received from the
application. COMMON_SET_FEATURES is not currently being approved.
Add definition of the missing command and allow it to be issued by
applications.
Link: https://lore.kernel.org/r/20200630215001.70793-11-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Change vocabulary of 0373 log msg from "error" to "cmpl" The current
language of the 0373 message contains the word "error" which caused a
number of customers to inquire about the "error" and if it should be a
concern. It isn't an error, it's simply an io completion status.
Revise the message to replace the word "error" with "cmpl" for completion.
Link: https://lore.kernel.org/r/20200630215001.70793-10-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
When the kdump kernel shuts down lpfc calls flush_work_queue on an
interrupt to schedule the cq handler. When there is only one CPU active on
the kdump kernel, it is possible for the work_on to get scheduled on a
non-active CPU causing it to never be scheduled.
When in the kdump environment, per-CPU affinity of cq's to cpus is not
necessary. In those cases, use a general queue_work rather than a
queue_work_on().
Link: https://lore.kernel.org/r/20200630215001.70793-9-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
When vports are deleted, it is observed that there is memory/kthread
leakage as the vport isn't fully being released.
There is a shost reference taken in scsi_add_host_dma that is not released
during scsi_remove_host. It was noticed that other drivers resolve this by
doing a scsi_host_put after calling scsi_remove_host.
The vport_delete routine is taking two references one that corresponds to
an access to the scsi_host in the vport_delete routine and another that is
released after the adapter mailbox command completes that destroys the VPI
that corresponds to the vport.
Remove one of the references taken such that the second reference that is
put will complete the missing scsi_add_host_dma reference and the shost
will be terminated.
Link: https://lore.kernel.org/r/20200630215001.70793-8-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Call traces have been observed running different tests that involve aborts
and setting the rrq active flag. The lpfc_set_rrq_active routine is doing
a mempool_alloc under the soft_irq processing level. When the mempool needs
to get a new buffer from the free pool and has to wait for memory to become
free it will check the flags passed in on the alloc and dump the stack if
the thread is running in interrupt context.
Replace the GFP_KERNEL flag with GFP_ATOMIC so that the memory allocation
will not attempt to sleep if there is no mem available.
Link: https://lore.kernel.org/r/20200630215001.70793-7-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
When using DUMP on SLI3 to read VPD and Port status data (config region
23), the adapter is overruning the kmalloc'd buffer causing havoc on other
consumers of the allocation pools.
Rework the loops processing the dump data and validate/size memory lengths
before performing bcopy.
Link: https://lore.kernel.org/r/20200630215001.70793-6-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
During driver unload/reload testing, the NVMe initiator would not
re-establish connectivity to NVMe controllers on reload.
The failing NVMe array supports concurrent FCP and NVMe operation via
different nport_id's. The array was repeatedly sending an ADISC every 2
seconds after PLOGI completed and while NVMe subsystems were executing
discovery. The target would continue this state for roughly 45 seconds.
The driver's current behavior on ADISC receipt is to validate a the ADISC
vs the device and issue a RESUME_RPI to restore transmission. The receipt
of the ADISC effectively caused a driver to take actions similar to a
logout and login for the remote port, causing the deregistration of the
nvme rport and a subsequent re-registration. This caused a constant reset
and re-connect of the NVMe controller while this 45s window occurred. There
was no need for the state changes as ADISC does not change login state.
This patch corrects this behavior by validating if the remoteport is
already logged in (MAPPED) and when true, avoids the call to set the ndlp
state to MAPPED, which triggers the unreg/re-reg. Thus ADISC does not
change the login state of the node.
Link: https://lore.kernel.org/r/20200630215001.70793-5-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Visual code inspection of the MDS implementation revealed two errors in
the driver:
- The set features Feature Code had an incorrect value
- The routine that classifies command type for cmd completions was missing
the Send Frame definition. Send Frame is used for MDS driver loopback.
Link: https://lore.kernel.org/r/20200630215001.70793-3-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Coverity reported the following error:
Assigned value that is never used may represent unnecessary computation.
The rc variable was initially assigned a value but in several cases, when
an error case is detected, it is reassigned a new value. The initial value
had little use.
In code-reviewing this routine, it could use some cleanup:
- Setting the initialization value to -ENODEV is a much better choice and
lessens code in the routine.
- The wasn't tracking logic errors vs no error and mailbox failure.
Better to resolve by adding a status to track the mailbox failure
and merge it with the logic error when the routine returns.
Link: https://lore.kernel.org/r/20200630215001.70793-2-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* Firmware Initialization with SCM enabled based on NVRAM setting and
firmware support (About Firmware).
* Enable PUREX and add support for fabric performance impact
notification (FPIN) handling.
* Allocate a default PUREX item for each vha to handle memory allocation
failures in ISR.
Link: https://lore.kernel.org/r/20200630102229.29660-3-njavali@marvell.com
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Reviewed-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Shyam Sundar <ssundar@marvell.com>
Signed-off-by: Arun Easi <aeasi@marvell.com>
Signed-off-by: Nilesh Javali <njavali@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
SAN Congestion Management generates ELS pkts whose size can vary and be >
64 bytes. Change the PUREX handling code to support non-standard ELS pkt
size.
Link: https://lore.kernel.org/r/20200630102229.29660-2-njavali@marvell.com
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Shyam Sundar <ssundar@marvell.com>
Signed-off-by: Arun Easi <aeasi@marvell.com>
Signed-off-by: Nilesh Javali <njavali@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Instead of repeating the code for generating a debug message prefix six
times, introduce a function for computing the debug message prefix.
Link: https://lore.kernel.org/r/20200629225454.22863-10-bvanassche@acm.org
Cc: Nilesh Javali <njavali@marvell.com>
Cc: Quinn Tran <qutran@marvell.com>
Cc: Himanshu Madhani <himanshu.madhani@oracle.com>
Cc: Martin Wilck <mwilck@suse.com>
Cc: Roman Bolshakov <r.bolshakov@yadro.com>
Reviewed-by: Daniel Wagner <dwagner@suse.de>
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Instead of using complicated control flow to only have one return statement
at the end of qla2x00_restart_isp(), return an error status as soon as it
is known that this function will fail.
Link: https://lore.kernel.org/r/20200629225454.22863-9-bvanassche@acm.org
Cc: Nilesh Javali <njavali@marvell.com>
Cc: Quinn Tran <qutran@marvell.com>
Cc: Himanshu Madhani <himanshu.madhani@oracle.com>
Cc: Martin Wilck <mwilck@suse.com>
Cc: Roman Bolshakov <r.bolshakov@yadro.com>
Reviewed-by: Daniel Wagner <dwagner@suse.de>
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
'cnt' can exceed the size of the risc_ram[] array. Prevent that Coverity
complains by rewriting an address calculation expression. This patch fixes
the following Coverity complaint:
CID 337803 (#1 of 1): Out-of-bounds read (OVERRUN)
109. overrun-local: Overrunning array of 122880 bytes at byte offset 122880
by dereferencing pointer &fw->risc_ram[cnt].
Link: https://lore.kernel.org/r/20200629225454.22863-8-bvanassche@acm.org
Cc: Nilesh Javali <njavali@marvell.com>
Cc: Quinn Tran <qutran@marvell.com>
Cc: Himanshu Madhani <himanshu.madhani@oracle.com>
Cc: Martin Wilck <mwilck@suse.com>
Cc: Roman Bolshakov <r.bolshakov@yadro.com>
Reviewed-by: Daniel Wagner <dwagner@suse.de>
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The request_t 'handle' member is 32-bits wide, hence use wrt_reg_dword().
Change the cast in the wrt_reg_byte() call to make it clear that a regular
pointer is casted to an __iomem pointer.
Note: 'pkt' points to I/O memory for the qlafx00 adapter family and to
coherent memory for all other adapter families.
This patch fixes the following Coverity complaint:
CID 358864 (#1 of 1): Reliance on integer endianness (INCOMPATIBLE_CAST)
incompatible_cast: Pointer &pkt->handle points to an object whose effective
type is unsigned int (32 bits, unsigned) but is dereferenced as a narrower
unsigned short (16 bits, unsigned). This may lead to unexpected results
depending on machine endianness.
Link: https://lore.kernel.org/r/20200629225454.22863-7-bvanassche@acm.org
Fixes: 8ae6d9c7eb ("[SCSI] qla2xxx: Enhancements to support ISPFx00.")
Cc: Nilesh Javali <njavali@marvell.com>
Cc: Quinn Tran <qutran@marvell.com>
Cc: Himanshu Madhani <himanshu.madhani@oracle.com>
Cc: Martin Wilck <mwilck@suse.com>
Cc: Roman Bolshakov <r.bolshakov@yadro.com>
Reviewed-by: Daniel Wagner <dwagner@suse.de>
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Remove an unnecessary cast because it prevents the compiler to perform type
checking.
Link: https://lore.kernel.org/r/20200629225454.22863-6-bvanassche@acm.org
Cc: Nilesh Javali <njavali@marvell.com>
Cc: Quinn Tran <qutran@marvell.com>
Cc: Himanshu Madhani <himanshu.madhani@oracle.com>
Cc: Martin Wilck <mwilck@suse.com>
Cc: Roman Bolshakov <r.bolshakov@yadro.com>
Reviewed-by: Daniel Wagner <dwagner@suse.de>
Reviewed-by: Shyam Sundar <ssundar@marvell.com>
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The following code:
qla82xx_rom_fast_read(ha, 0, &n)
only initializes 'n' if it succeeds. Since 'n' may be reported in a debug
message even if no ROM reads succeeded, initialize 'n' to zero.
This patch fixes the following sparse warning:
qla_nx.c:1218: qla82xx_pinit_from_rom() error: uninitialized symbol 'n'.
Link: https://lore.kernel.org/r/20200629225454.22863-5-bvanassche@acm.org
Cc: Nilesh Javali <njavali@marvell.com>
Cc: Quinn Tran <qutran@marvell.com>
Cc: Himanshu Madhani <himanshu.madhani@oracle.com>
Cc: Martin Wilck <mwilck@suse.com>
Cc: Roman Bolshakov <r.bolshakov@yadro.com>
Reviewed-by: Daniel Wagner <dwagner@suse.de>
Reviewed-by: Shyam Sundar <ssundar@marvell.com>
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Return early instead of having a single return statement at the end of this
function. This patch fixes the following sparse warning:
qla_nx.c:1018: qla82xx_flash_wait_write_finish() error: uninitialized symbol 'val'.
Link: https://lore.kernel.org/r/20200629225454.22863-4-bvanassche@acm.org
Cc: Nilesh Javali <njavali@marvell.com>
Cc: Quinn Tran <qutran@marvell.com>
Cc: Himanshu Madhani <himanshu.madhani@oracle.com>
Cc: Martin Wilck <mwilck@suse.com>
Cc: Roman Bolshakov <r.bolshakov@yadro.com>
Reviewed-by: Daniel Wagner <dwagner@suse.de>
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Remove the __packed annotation from struct fcp_hdr* because that annotation
is not necessary for these data structures.
Link: https://lore.kernel.org/r/20200629225454.22863-3-bvanassche@acm.org
Cc: Nilesh Javali <njavali@marvell.com>
Cc: Quinn Tran <qutran@marvell.com>
Cc: Himanshu Madhani <himanshu.madhani@oracle.com>
Cc: Martin Wilck <mwilck@suse.com>
Cc: Roman Bolshakov <r.bolshakov@yadro.com>
Reviewed-by: Daniel Wagner <dwagner@suse.de>
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Since struct fcp_hdr is used to exchange data with the firmware, check its
size at compile time.
Link: https://lore.kernel.org/r/20200629225454.22863-2-bvanassche@acm.org
Cc: Nilesh Javali <njavali@marvell.com>
Cc: Quinn Tran <qutran@marvell.com>
Cc: Himanshu Madhani <himanshu.madhani@oracle.com>
Cc: Martin Wilck <mwilck@suse.com>
Cc: Roman Bolshakov <r.bolshakov@yadro.com>
Reviewed-by: Daniel Wagner <dwagner@suse.de>
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The "head" pointer can't be NULL because it points to an address in the
middle of a ufs_hba struct. Looking at this code, probably someone would
wonder if the intent was to check whether "hba" is NULL, but "hba" isn't
NULL and the check can just be removed.
Link: https://lore.kernel.org/r/20200626105133.GF314359@mwanda
Acked-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
If a UFS device is not qualified to use WriteBooster, either due to wrong
UFS version or device-specific quirks, then the capability in host shall be
disabled to prevent any WriteBooster operations in the future.
Link: https://lore.kernel.org/r/20200625030430.25048-1-stanley.chu@mediatek.com
Fixes: 3d17b9b5ab ("scsi: ufs: Add write booster feature support")
Tested-by: Steev Klimaszewski <steev@kali.org>
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Reviewed-by: Bean Huo <beanhuo@micron.com>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Removed all the unused variables.
Link: https://lore.kernel.org/r/20200622093814.3250-1-jhasan@marvell.com
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Javed Hasan <jhasan@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The dev_id used in request_irq() and free_irq() should match. Use 'info'
in both cases.
Link: https://lore.kernel.org/r/20200625204730.943520-1-christophe.jaillet@wanadoo.fr
Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Acked-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
While building for x86_64 allmodconfig, the following warning was reported:
WARNING: modpost: missing MODULE_LICENSE() in drivers/scsi/ufs/ufs-exynos.o
Add the missing license/author/description tags.
Link: https://lore.kernel.org/r/20200625154405.60448-1-alim.akhtar@samsung.com
Fixes: 55f4b1f736 ("scsi: ufs: ufs-exynos: Add UFS host support for Exynos SoCs")
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
In case of error, the function devm_ioremap_resource() returns ERR_PTR()
and never returns NULL. The NULL test in the return value check should be
replaced with IS_ERR().
Link: https://lore.kernel.org/r/20200618133837.127274-1-weiyongjun1@huawei.com
Fixes: 55f4b1f736 ("scsi: ufs: ufs-exynos: Add UFS host support for Exynos SoCs")
Reported-by: Hulk Robot <hulkci@huawei.com>
Acked-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Allow Exynos UFS driver to build as a module. This patch fixes the
followin build issue reported by kernel build robot.
drivers/scsi/ufs/ufs-exynos.o: in function `exynos_ufs_probe':
drivers/scsi/ufs/ufs-exynos.c:1231: undefined reference to `ufshcd_pltfrm_init'
drivers/scsi/ufs/ufs-exynos.o: in function `exynos_ufs_pre_pwr_mode':
drivers/scsi/ufs/ufs-exynos.c:635: undefined reference to `ufshcd_get_pwr_dev_param'
drivers/scsi/ufs/ufs-exynos.o:undefined reference to `ufshcd_pltfrm_shutdown'
drivers/scsi/ufs/ufs-exynos.o:undefined reference to `ufshcd_pltfrm_suspend'
drivers/scsi/ufs/ufs-exynos.o:undefined reference to `ufshcd_pltfrm_resume'
drivers/scsi/ufs/ufs-exynos.o:undefined reference to `ufshcd_pltfrm_runtime_suspend'
drivers/scsi/ufs/ufs-exynos.o:undefined reference to `ufshcd_pltfrm_runtime_resume'
drivers/scsi/ufs/ufs-exynos.o:undefined reference to `ufshcd_pltfrm_runtime_idle'
Link: https://lore.kernel.org/r/20200620173232.52521-1-alim.akhtar@samsung.com
Fixes: 55f4b1f736 ("scsi: ufs: ufs-exynos: Add UFS host support for Exynos SoCs")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Delete trailing whitespace, multiple blank lines, and make switch/case be
at the same indentation.
Link: https://lore.kernel.org/r/20200619154117.10262-3-huobean@gmail.com
Signed-off-by: Bean Huo <beanhuo@micron.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
After commit f664a3cc17 ("scsi: kill off the legacy IO path"),
scsi_sdb_cache is not used anymore. Remove it.
Link: https://lore.kernel.org/r/20200619154117.10262-2-huobean@gmail.com
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Bean Huo <beanhuo@micron.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
There is a spelling mistake in a dev_warn message. Fix it.
Link: https://lore.kernel.org/r/20200617084911.167359-1-colin.king@canonical.com
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Fix build warning reported by kernel test robot:
Warning:
>> drivers/scsi/ufs/ufs-mediatek.c:181:5: warning: no previous prototype
>> for 'ufs_mtk_wait_link_state' [-Wmissing-prototypes]
Link: https://lore.kernel.org/r/20200616095120.14570-1-stanley.chu@mediatek.com
Reported-by: kernel test robot <lkp@intel.com>
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The UFS load calculation is based on "total_time" and "busy_time" in a
devfreq window. However, the source of time is different for both
parameters: "busy_time" is assigned from "jiffies" thus has different
accuracy from "total_time" which is assigned from ktime_get().
In addition, the time of window boundary is not exactly the same as the
starting busy time in this window if UFS is actually busy in the beginning
of the window. A similar accuracy error may also happen for the end of busy
time in current window.
To guarantee the precision of load calculation, we need to
1. Align time accuracy of both devfreq_dev_status.total_time and
devfreq_dev_status.busy_time. For example, use "ktime_get()" directly.
2. Align the following timelines:
- The beginning time of devfreq windows
- The beginning of busy time in a new window
- The end of busy time in the current window
Link: https://lore.kernel.org/r/20200611101043.6379-1-stanley.chu@mediatek.com
Fixes: a3cd5ec55f ("scsi: ufs: add load based scaling of UFS gear")
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Remove unused fields "cmd_active" and "result" in struct ufs_command.
Link: https://lore.kernel.org/r/20200615072235.23042-2-stanley.chu@mediatek.com
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Clean up the following items:
- Sort vendor names in alphabetical order
- Squash quirks as compact as possible in device table to enhance
performance of the lookup
- Sort device quirks in alphabetical order
Link: https://lore.kernel.org/r/20200612012625.6615-3-stanley.chu@mediatek.com
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
It is confirmed that Micron device needs DELAY_BEFORE_LPM quirk to have a
delay before VCC is powered off. Sdd Micron vendor ID and this quirk for
Micron devices.
Link: https://lore.kernel.org/r/20200612012625.6615-2-stanley.chu@mediatek.com
Reviewed-by: Bean Huo <beanhuo@micron.com>
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Add SPDX GPL-2.0 to UFS driver files that specified the GPL version 2
license, remove the full boilerplate text.
Link: https://lore.kernel.org/r/20200605200520.20831-2-huobean@gmail.com
Reviewed-by: Tomas Winkler <tomas.winkler@intel.com>
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Bean Huo <beanhuo@micron.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
For UFS 3.1, the normal unit descriptor is 10 bytes larger than the RPMB
unit. However, both descriptors share the same desc_idn, to cover both unit
descriptors with one length, we choose the normal unit descriptor length by
desc_index.
Link: https://lore.kernel.org/r/20200603091959.27618-6-huobean@gmail.com
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Bean Huo <beanhuo@micron.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
At UFS initialization stage, to get the length of the descriptor,
ufshcd_read_desc_length() was being called 6 times. Instead, we will
capture the descriptor size the first time we'll read it.
Delete unnecessary redundant code, remove ufshcd_read_desc_length(),
ufshcd_init_desc_sizes(), and boost UFS initialization.
Link: https://lore.kernel.org/r/20200603091959.27618-5-huobean@gmail.com
Acked-by: Avri Altman <avri.altman@wdc.com>
Reviewed-by: Bart van Assche <bvanassche@acm.org>
Reviewed-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Bean Huo <beanhuo@micron.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
If param_offset is not 0, the memcpy length shouldn't be the true
descriptor length.
Link: https://lore.kernel.org/r/20200603091959.27618-4-huobean@gmail.com
Acked-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Bean Huo <beanhuo@micron.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
For the UFS device, the maximum descriptor size is 255, max_t called on
ufs_get_device_desc() is useless.
Link: https://lore.kernel.org/r/20200603091959.27618-2-huobean@gmail.com
Reviewed-by: Stanley Chu <stanley.chu@mediatek.com>
Acked-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Bart van Assche <bvanassche@acm.org>
Signed-off-by: Bean Huo <beanhuo@micron.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Allow unbound MPHY module since not every MediaTek UFS platform needs
specific MPHY control.
Link: https://lore.kernel.org/r/20200601104646.15436-6-stanley.chu@mediatek.com
Reviewed-by: Peter Wang <peter.wang@mediatek.com>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
MediaTek UFS clocks are separated to two parts and controlled by different
modules: ufs-mediatek and phy-ufs-mediatek.
If both Auto-Hibern8 and clk-gating feature are enabled, mphy power control
is not balanced thus unbalanced control also happens to the clocks probed
by phy-ufs-mediatek module.
Fix this issue by:
- Promise usage of phy_power_on/off balanced
- Remove phy_power_on/off control in suspend/resume vops since both can be
handled in setup_clock vops only
Link: https://lore.kernel.org/r/20200601104646.15436-5-stanley.chu@mediatek.com
Reviewed-by: Peter Wang <peter.wang@mediatek.com>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Allow device power supply to enter low-power mode.
Link: https://lore.kernel.org/r/20200601104646.15436-4-stanley.chu@mediatek.com
Reviewed-by: Pengshun Zhao <pengshun.zhao@mediatek.com>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
There is a chance that link enters hibern8 via auto-hibern8 scheme during
the clock-gating flow. Clocks shall not be gated if link is still active
otherwise host or device may hang.
Fix this by returning error code to the caller __ufshcd_setup_clocks() to
skip gating clocks there if link is not confirmed in hibern8 state yet.
Also allow some waiting time for the hibern8 state transition.
Link: https://lore.kernel.org/r/20200601104646.15436-3-stanley.chu@mediatek.com
Reviewed-by: Andy Teng <andy.teng@mediatek.com>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Currently ref-clk control timeout is implemented by jiffies. However
jiffies is not accurate enough thus "false timeout" may happen.
Use more accurate delay mechanism instead, i.e. ktime.
Link: https://lore.kernel.org/r/20200601104646.15436-2-stanley.chu@mediatek.com
Reviewed-by: Andy Teng <andy.teng@mediatek.com>
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This patch introduces Exynos UFS host controller driver which mainly
handles vendor-specific operations including link startup, power mode
change and hibernation/unhibernation.
[robot: drivers/scsi/ufs/ufs-exynos.c:931:8-10:
WARNING: possible condition with no effect (if == else)
]
Link: https://lore.kernel.org/r/20200528011658.71590-10-alim.akhtar@samsung.com
Reported-by: kbuild test robot <lkp@intel.com>
Reported-by: Julia Lawall <julia.lawall@lip6.fr>
Tested-by: Paweł Chmiel <pawel.mikolaj.chmiel@gmail.com>
Reviewed-by: Kiwoong Kim <kwmad.kim@samsung.com>
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Seungwon Jeon <essuuj@gmail.com>
Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Some controller like Exynos determines if FATAL ERROR (0x7) in OCS field in
UTRD occurs for values other than GOOD (0x0) in STATUS field in response
upiu as well as errors that a host controller can't cover. This patch is
to prevent from reporting command results in those cases.
Link: https://lore.kernel.org/r/20200528011658.71590-6-alim.akhtar@samsung.com
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Kiwoong Kim <kwmad.kim@samsung.com>
Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Some UFS host controllers like Exynos uses granularities of PRDT length and
offset as bytes, whereas others use actual segment count.
Link: https://lore.kernel.org/r/20200528011658.71590-5-alim.akhtar@samsung.com
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Kiwoong Kim <kwmad.kim@samsung.com>
Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
John Garry