linux-toradex.git/drivers/scsi/cxlflash/main.h, branch master

scsi: cxlflash: Remove driver

2025-02-03T23:04:55+00:00

Remove the cxlflash driver for IBM CAPI Flash devices.

The cxlflash driver has received minimal maintenance for some time, and
the CAPI Flash hardware that uses it is no longer commercially available.

Thanks to Uma Krishnan, Matthew Ochs and Manoj Kumar for their work on
this driver over the years.

Signed-off-by: Andrew Donnellan 
Link: https://lore.kernel.org/r/20250203072801.365551-2-ajd@linux.ibm.com
Reviewed-by: Frederic Barrat 
Signed-off-by: Martin K. Petersen

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152

2019-05-30T18:26:32+00:00

Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 3029 file(s).

Signed-off-by: Thomas Gleixner 
Reviewed-by: Allison Randal 
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de
Signed-off-by: Greg Kroah-Hartman

scsi: cxlflash: fix assignment of the backend operations

2018-07-11T02:29:54+00:00

commit cd43c221bb5e ("scsi: cxlflash: Isolate external module
dependencies") introduced the use of ifdefs to avoid compilation errors
when one of the possible backend driver, CXL or OCXL, is not compiled.

Unfortunately, the wrong defines are used and the backend ops are never
assigned, leading to a kernel crash in any case when the cxlflash module is
loaded.

Signed-off-by: Cédric Le Goater 
Acked-by: Matthew R. Ochs 
Signed-off-by: Martin K. Petersen

scsi: cxlflash: Isolate external module dependencies

2018-05-18T15:22:10+00:00

Depending on the underlying transport, cxlflash has a dependency on either
the CXL or OCXL drivers, which are enabled via their Kconfig option.
Instead of having a module wide dependency on these config options, it is
better to isolate the object modules that are dependent on the CXL and OCXL
drivers and adjust the module dependencies accordingly.

This commit isolates the object files that are dependent on CXL and/or
OCXL. The cxl/ocxl fops used in the core driver are tucked under an ifdef to
avoid compilation errors.

Signed-off-by: Uma Krishnan 
Acked-by: Matthew R. Ochs 
Signed-off-by: Martin K. Petersen

scsi: cxlflash: Abstract hardware dependent assignments

2018-05-18T15:22:10+00:00

As a staging cleanup to support transport specific builds of the cxlflash
module, relocate device dependent assignments to header files. This will
avoid littering the core driver with conditional compilation logic.

Signed-off-by: Uma Krishnan 
Acked-by: Matthew R. Ochs 
Signed-off-by: Martin K. Petersen

scsi: cxlflash: Enable OCXL operations

2018-04-18T23:32:50+00:00

This commit enables the OCXL operations for the OCXL devices.

Signed-off-by: Uma Krishnan 
Acked-by: Matthew R. Ochs 
Signed-off-by: Martin K. Petersen

scsi: cxlflash: Allow cards without WWPN VPD to configure

2017-10-31T16:28:03+00:00

Currently, all adapters that cxlflash supports must have WWPN VPD
keywords to complete configuration. This was required as cards with
external FC ports needed to be programmed with WWPNs.

Newer supported cards do not have an external FC interface and therefore
do not require WWPN. To support backwards compatibility, these devices
have included 'dummy' WWPN VPD with WWPN values of zero. This however
places a dependency that all future cards have WWPN VPD, which may not
always be the case.

Allow for cards to not have WWPN, designating which cards are expected
to have it in order to configure properly.

Signed-off-by: Matthew R. Ochs 
Signed-off-by: Uma Krishnan 
Signed-off-by: Martin K. Petersen

scsi: cxlflash: Support AFU debug

2017-06-26T19:01:12+00:00

Adopt the SISLite AFU debug capability to allow future CXL Flash
adapters the ability to better debug AFU issues. Update the SISLite
header with the changes necessary to support AFU debug operations
and create a host ioctl interface for user debug software. Also
update the cxlflash documentation to describe this new host ioctl.

Signed-off-by: Matthew R. Ochs 
Signed-off-by: Uma Krishnan 
Signed-off-by: Martin K. Petersen

scsi: cxlflash: Support LUN provisioning

2017-06-26T19:01:12+00:00

Adopt the SISLite AFU LUN provisioning capability to allow future CXL
Flash adapters the ability to better manage storage. Update the SISLite
header with the changes necessary to support LUN provision operations
and create a host ioctl interface for user LUN management software. Also
update the cxlflash documentation to describe this new host ioctl.

Signed-off-by: Matthew R. Ochs 
Signed-off-by: Uma Krishnan 
Signed-off-by: Martin K. Petersen

scsi: cxlflash: Create character device to provide host management interface

2017-06-26T19:01:10+00:00

The cxlflash driver currently lacks host management interface. Future
devices supported by cxlflash will provide a variety of host-wide
management functions. Examples include LUN provisioning, hardware debug
support, and firmware download.

In order to provide a way to manage the device, a character device will
be created during probe of each adapter. This device will support a set of
ioctls defined in the SISLite specification from which administrators can
manage the adapter.

Signed-off-by: Uma Krishnan 
Acked-by: Matthew R. Ochs 
Signed-off-by: Martin K. Petersen