linux-toradex.git/drivers/rapidio/rio.c, branch v4.9.127

rapidio: modify for rev.3 specification changes

2016-08-02T23:35:37+00:00

Implement changes made in RapidIO specification rev.3 to LP-Serial Physical
Layer register definitions:

 - use per-port register offset calculations based on LP-Serial Extended
   Features Block (EFB) Register Map type (I or II) with different
   per-port offset step (0x20 vs 0x40 respectfully).

 - remove deprecated Parallel Physical layer definitions and related
   code.

[alexandre.bounine@idt.com: fix DocBook warning for gen3 update]
  Link: http://lkml.kernel.org/r/1469191173-19338-1-git-send-email-alexandre.bounine@idt.com
Link: http://lkml.kernel.org/r/1469125134-16523-12-git-send-email-alexandre.bounine@idt.com
Signed-off-by: Alexandre Bounine 
Tested-by: Barry Wood 
Cc: Matt Porter 
Cc: Andre van Herk 
Cc: Barry Wood 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

rapidio: fix error handling in mbox request/release functions

2016-08-02T23:35:36+00:00

Add checking for error code returned by HW-specific mbox open routines.
Ensure that resources are properly release if failed.

This patch is applicable to kernel versions starting from v2.6.15.

Link: http://lkml.kernel.org/r/1469125134-16523-9-git-send-email-alexandre.bounine@idt.com
Signed-off-by: Alexandre Bounine 
Cc: Matt Porter 
Cc: Andre van Herk 
Cc: Barry Wood 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

rapidio: fix return value description for dma_prep functions

2016-08-02T23:35:33+00:00

Update return value description for rio_dma_prep_...  functions to
include error-valued pointer that can be returned by HW mport device
drivers.  Return values from these functions must be checked using
IS_ERR_OR_NULL macro.

This patch is applicable to kernel versions starting from v4.6-rc1.

Link: http://lkml.kernel.org/r/1469125134-16523-4-git-send-email-alexandre.bounine@idt.com
Signed-off-by: Alexandre Bounine 
Cc: Matt Porter 
Cc: Andre van Herk 
Cc: Barry Wood 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

rapidio: add outbound window support

2016-03-22T22:36:02+00:00

Add RapidIO controller (mport) outbound window configuration operations.

This patch is a part of the original patch submitted by Li Yang:

   https://lists.ozlabs.org/pipermail/linuxppc-dev/2009-April/071210.html

For some reason the original part was not applied to mainline code
tree.  The inbound window mapping part has been applied later during
tsi721 mport driver submission.  Now goes the second part with
corresponding HW support.

Signed-off-by: Alexandre Bounine 
Cc: Matt Porter 
Cc: Li Yang 
Cc: Aurelien Jacquiot 
Cc: Andre van Herk 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

rapidio: add global inbound port write interfaces

2016-03-22T22:36:02+00:00

Add new Port Write handler registration interfaces that attach PW
handlers to local mport device objects.  This is different from old
interface that attaches PW callback to individual RapidIO device.  The
new interfaces are intended for use for common event handling (e.g.
hot-plug notifications) while the old interface is available for
individual device drivers.

This patch is based on patch proposed by Andre van Herk but preserves
existing per-device interface and adds lock protection for list
handling.

Signed-off-by: Alexandre Bounine 
Cc: Matt Porter 
Cc: Aurelien Jacquiot 
Cc: Andre van Herk 
Cc: Stephen Rothwell 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

rapidio: move rio_pw_enable into core code

2016-03-22T22:36:02+00:00

Make rio_pw_enable() routine available to other RapidIO drivers.

Signed-off-by: Alexandre Bounine 
Cc: Matt Porter 
Cc: Aurelien Jacquiot 
Cc: Andre van Herk 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

rapidio: move rio_local_set_device_id function to the common core

2016-03-22T22:36:02+00:00

Make function rio_local_set_device_id() common for all components of
RapidIO subsystem.

Signed-off-by: Alexandre Bounine 
Cc: Matt Porter 
Cc: Aurelien Jacquiot 
Cc: Andre van Herk 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

rapidio: add lock protection for doorbell list

2016-03-22T22:36:02+00:00

Add lock protection around doorbell list handling to prevent list
corruption on SMP platforms.

Signed-off-by: Alexandre Bounine 
Cc: Matt Porter 
Cc: Aurelien Jacquiot 
Cc: Andre van Herk 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

rapidio: add core mport removal support

2016-03-22T22:36:02+00:00

Add common mport removal support functions into the RapidIO subsystem
core.

Changes to the existing mport registration process have been made to
avoid race conditions with active subsystem interfaces immediately after
mport device registration: part of initialization code from
rio_register_mport() have been moved into separate function
rio_mport_initialize() to allow to perform mport registration as the
final step of setup process.

Signed-off-by: Alexandre Bounine 
Cc: Matt Porter 
Cc: Aurelien Jacquiot 
Cc: Andre van Herk 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

rapidio: move net allocation into core code

2016-03-22T22:36:02+00:00

Make net allocation/release routines available to all components of
RapidIO subsystem by moving code from rio-scan enumerator.

Make destination ID allocation method private to existing enumerator
because other enumeration methods can use their own algorithm.

Setup net device object as a parent of all RapidIO devices residing in
it and register net as a child of active mport device.

Signed-off-by: Alexandre Bounine 
Cc: Matt Porter 
Cc: Aurelien Jacquiot 
Cc: Andre van Herk 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds