linux-toradex.git/include/linux/nvme.h, branch v4.17-rc1

nvme-pci: clean up SMBSZ bit definitions

2018-01-17T16:55:14+00:00

Define the bit positions instead of macros using the magic values,
and move the expanded helpers to calculate the size and size unit into
the implementation C file.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Keith Busch 
Reviewed-by: Sagi Grimberg 
Reviewed-by: Logan Gunthorpe

nvme: send uevent for some asynchronous events

2017-11-11T02:53:25+00:00

This will give udev a chance to observe and handle asynchronous event
notifications and clear the log to unmask future events of the same type.
The driver will create a change uevent of the asyncronuos event result
before submitting the next AEN request to the device if a completed AEN
event is of type error, smart, command set or vendor specific,

Signed-off-by: Keith Busch 
Reviewed-by: Guan Junxiong 
Signed-off-by: Christoph Hellwig 
Signed-off-by: Jens Axboe

nvme: centralize AEN defines

2017-11-11T02:53:25+00:00

All the transports were unnecessarilly duplicating the AEN request
accounting. This patch defines everything in one place.

Signed-off-by: Keith Busch 
Reviewed-by: Guan Junxiong 
Signed-off-by: Christoph Hellwig 
Signed-off-by: Jens Axboe

nvme: check admin passthru command effects

2017-11-11T02:53:25+00:00

The NVMe standard provides a command effects log page so the host may
be aware of special requirements it may need to do for a particular
command. For example, the command may need to run with IO quiesced to
prevent timeouts or undefined behavior, or it may change the logical block
formats that determine how the host needs to construct future commands.

This patch saves the nvme command effects log page if the controller
supports it, and performs appropriate actions before and after an admin
passthrough command is completed. If the controller does not support the
command effects log page, the driver will define the effects for known
opcodes. The nvme format and santize are the only commands in this patch
with known effects.

Signed-off-by: Keith Busch 
Signed-off-by: Christoph Hellwig 
Signed-off-by: Jens Axboe

nvme: add transport SGL definitions

2017-09-25T14:56:05+00:00

Add transport SGL defintions from NVMe TP 4008, required for
the final NVMe-FC standard.

Signed-off-by: James Smart 
Signed-off-by: Christoph Hellwig 
Signed-off-by: Jens Axboe

nvme.h: remove FC transport-specific error values

2017-09-25T14:56:05+00:00

The NVM express group recinded the reserved range for the transport.
Remove the FC-centric values that had been defined.

Signed-off-by: James Smart 
Signed-off-by: Christoph Hellwig 
Signed-off-by: Jens Axboe

nvme-pci: implement the HMB entry number and size limitations

2017-09-11T16:29:40+00:00

Adds support for the new Host Memory Buffer Minimum Descriptor Entry Size
and Host Memory Maximum Descriptors Entries field that were added in
TP 4002 HMB Enhancements.  These allow the controller to advertise
limits for the usual number of segments in the host memory buffer, as
well as a minimum usable per-segment size.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Keith Busch

Merge branch 'for-4.14/block-postmerge' of git://git.kernel.dk/linux-block

2017-09-09T19:49:01+00:00

Pull followup block layer updates from Jens Axboe:
 "I ended up splitting the main pull request for this series into two,
  mainly because of clashes between NVMe fixes that went into 4.13 after
  the for-4.14 branches were split off. This pull request is mostly
  NVMe, but not exclusively. In detail, it contains:

   - Two pull request for NVMe changes from Christoph. Nothing new on
     the feature front, basically just fixes all over the map for the
     core bits, transport, rdma, etc.

   - Series from Bart, cleaning up various bits in the BFQ scheduler.

   - Series of bcache fixes, which has been lingering for a release or
     two. Coly sent this in, but patches from various people in this
     area.

   - Set of patches for BFQ from Paolo himself, updating both
     documentation and fixing some corner cases in performance.

   - Series from Omar, attempting to now get the 4k loop support
     correct. Our confidence level is higher this time.

   - Series from Shaohua for loop as well, improving O_DIRECT
     performance and fixing a use-after-free"

* 'for-4.14/block-postmerge' of git://git.kernel.dk/linux-block: (74 commits)
  bcache: initialize dirty stripes in flash_dev_run()
  loop: set physical block size to logical block size
  bcache: fix bch_hprint crash and improve output
  bcache: Update continue_at() documentation
  bcache: silence static checker warning
  bcache: fix for gc and write-back race
  bcache: increase the number of open buckets
  bcache: Correct return value for sysfs attach errors
  bcache: correct cache_dirty_target in __update_writeback_rate()
  bcache: gc does not work when triggering by manual command
  bcache: Don't reinvent the wheel but use existing llist API
  bcache: do not subtract sectors_to_gc for bypassed IO
  bcache: fix sequential large write IO bypass
  bcache: Fix leak of bdev reference
  block/loop: remove unused field
  block/loop: fix use after free
  bfq: Use icq_to_bic() consistently
  bfq: Suppress compiler warnings about comparisons
  bfq: Check kstrtoul() return value
  bfq: Declare local functions static
  ...

nvme: fix the definition of the doorbell buffer config support bit

2017-08-30T12:46:32+00:00

NVMe 1.3 specification defines the Optional Admin Command Support feature
flags, bit 8 set to '1' then the controller supports the Doorbell Buffer
Config command. Bit 7 is used for Virtualization Mangement command.

Signed-off-by: Changpeng Liu 
Reviewed-by: Sagi Grimberg 
Reviewed-by: Max Gurtovoy 
Reviewed-by: Johannes Thumshirn 
Signed-off-by: Christoph Hellwig 
Fixes: f9f38e33 ("nvme: improve performance for virtual NVMe devices")
Cc: stable@vger.kernel.org

nvme: rename AMS symbolic constants to fit specification

2017-08-28T20:00:39+00:00

Signed-off-by: Max Gurtovoy 
Signed-off-by: Christoph Hellwig