linux-toradex.git/include/linux/nvme.h, branch v3.10.2

NVMe: Simplify Firmware Activate code slightly

2013-05-08T13:55:05+00:00

Add definitions for the three Firmware Activate actions, and change the
SCSI translation code to construct the command into a temporary variable
instead of translating the endianness back-and-forth.

Signed-off-by: Matthew Wilcox 
Reviewed-by: Vishal Verma

NVMe: Meta-data support in NVME_IOCTL_SUBMIT_IO

2013-05-02T19:35:09+00:00

This adds support for namespaces with separate meta-data formats in the
submit io ioctl. The meta-data buffer has to be a contiguous, so such
a buffer is allocated and the mapped user pages are copied to/from this
buffer for write/read commands.

Signed-off-by: Keith Busch 
Signed-off-by: Matthew Wilcox

NVMe: Device specific stripe size handling

2013-05-02T18:41:05+00:00

We have an nvme device that has a concept of a stripe size. IO requests
that do not transfer data crossing a stripe boundary has greater
performance compared to IO that does cross it. This patch sets the
stripe size for the device if the device and vendor ids match one with
this feature and splits IO requests that cross the stripe boundary.

Signed-off-by: Keith Busch 
Signed-off-by: Matthew Wilcox

NVMe: Add a character device for each nvme device

2013-04-16T19:43:55+00:00

Registers a miscellaneous device for each nvme controller probed. This
creates character device files as /dev/nvmeN, where N is the device
instance, and supports nvme admin ioctl commands so devices without
namespaces can be managed.

Signed-off-by: Keith Busch 
Signed-off-by: Matthew Wilcox

NVMe: Fix endian-related problems in user I/O submission path

2013-04-16T19:21:06+00:00

When constructing the command, dsmgmt needs to be treated as a 32-bit
value, not a 16-bit value.  reftag, apptag and appmask all need to be
converted from native-endian to little-endian.  Again, sparse's bitwise
warnings caught this problem.  Thanks to Keith for pointing out the
correct way to fix the reftag.

Signed-off-by: Matthew Wilcox 
Acked-by: Keith Busch

NVMe: Abstract out sector to block number conversion

2013-04-16T19:05:22+00:00

Introduce nvme_block_nr() to help convert sectors to block numbers.
This fixes an integer overflow in the SCSI conversion layer, and it's
slightly less typing than opencoding it.

Signed-off-by: Matthew Wilcox 
Acked-by: Keith Busch

NVMe: Add nvme-scsi.c

2013-03-28T18:50:49+00:00

Translates SCSI commands in SG_IO ioctl to NVMe commands.
Uses the scsi-nvme translation spec from nvmexpress.org as reference.

Signed-off-by: Vishal Verma 
Signed-off-by: Matthew Wilcox

NVMe: Add definitions for format command

2013-03-27T11:17:49+00:00

The SCSI emulation has the ability to send format commands, so we need
to add the definition of the command.  Also add a missing error code.

Signed-off-by: Vishal Verma 
Signed-off-by: Matthew Wilcox

NVMe: Move structures & definitions to header file

2013-03-27T11:05:42+00:00

nvme-scsi.c uses several data structures and definitions that were
previously private to nvme-core.c.  Move the definitions to nvme.h,
protected by __KERNEL__.

Signed-off-by: Vishal Verma 
Signed-off-by: Matthew Wilcox

NVMe: Add discard support for capable devices

2013-03-26T18:18:58+00:00

This adds discard support to block queues if the nvme device is capable of
deallocating blocks as indicated by the controller's optional command support.
A discard flagged bio request will submit an NVMe deallocate Data Set
Management command for the requested blocks.

Signed-off-by: Keith Busch 
Signed-off-by: Matthew Wilcox