linux-toradex.git/drivers/ntb, branch v3.17-rc6

ntb: Add alignment check to meet hardware requirement

2014-09-14T04:10:38+00:00

The NTB translate register must have the value to be BAR size aligned.
This alignment check make sure that the DMA memory allocated has the
proper alignment. Another requirement for NTB to function properly with
memory window BAR size greater or equal to 4M is to use the CMA feature
in 3.16 kernel with the appropriate CONFIG_CMA_ALIGNMENT and
CONFIG_CMA_SIZE_MBYTES set.

Signed-off-by: Dave Jiang 
Signed-off-by: Jon Mason

NTB: correct the spread of queues over mw's

2014-09-14T04:10:38+00:00

The detection of an uneven number of queues on the given memory windows
was not correct.  The mw_num is zero based and the mod should be
division to spread them evenly over the mw's.

Signed-off-by: Jon Mason

ntb: Use pci_enable_msix_range() instead of pci_enable_msix()

2014-04-07T17:59:20+00:00

As result of deprecation of MSI-X/MSI enablement functions
pci_enable_msix() and pci_enable_msi_block() all drivers
using these two interfaces need to be updated to use the
new pci_enable_msi_range()  or pci_enable_msi_exact()
and pci_enable_msix_range() or pci_enable_msix_exact()
interfaces.

Signed-off-by: Alexander Gordeev 
Signed-off-by: Jon Mason

ntb: Split ntb_setup_msix() into separate BWD/SNB routines

2014-04-07T17:59:19+00:00

This is an cleanup effort to make ntb_setup_msix() more
readable - use ntb_setup_bwd_msix() to init MSI-Xs on
BWD hardware and ntb_setup_snb_msix() - on SNB hardware.

Function ntb_setup_snb_msix() also initializes MSI-Xs the
way it should has been done - looping pci_enable_msix()
until success or failure.

Signed-off-by: Alexander Gordeev 
Signed-off-by: Jon Mason

ntb: Use pci_msix_vec_count() to obtain number of MSI-Xs

2014-04-07T17:59:19+00:00

Signed-off-by: Alexander Gordeev 
Signed-off-by: Jon Mason

NTB: Code Style Clean-up

2014-04-07T17:59:19+00:00

Some white space and 80 char overruns corrected.

Signed-off-by: Jon Mason

NTB: client event cleanup

2014-04-07T17:59:19+00:00

Provide a better event interface between the client and transport

Signed-off-by: Jon Mason

ntb: Fix leakage of ntb_device::msix_entries[] array

2014-04-07T17:58:14+00:00

Signed-off-by: Alexander Gordeev 
Signed-off-by: Jon Mason

NTB: Fix typo in setting one translation register

2014-04-07T17:58:14+00:00

In the code for Xeon devices in back-to-back mode with xeon_errata_workaround
disabled, the downstream device puts the wrong value in SNB_B2B_XLAT_OFFSETL
(SNB_MBAR01_DSD_ADDR vs. SNB_MBAR01_USD_ADDR).

This was spotted while reading code, since the typo has no practical effect,
at least for now: the low 32 bits of both constants are actually identical
anyway.  However, it's clearer and safer to use the right name.

Signed-off-by: Roland Dreier 
Signed-off-by: Jon Mason

Merge tag 'ntb-3.13' of git://github.com/jonmason/ntb

2013-11-26T19:15:12+00:00

Pull non-transparent bridge updates from Jon Mason:
 "NTB driver bug fixes to address a missed call to pci_enable_msix,
  NTB-RP Link Up issue, Xeon Doorbell errata workaround, ntb_transport
  link down race, and correct dmaengine_get/put usage.

  Also, clean-ups to remove duplicate defines and document a hardware
  errata.  Finally, some changes to improve performance"

* tag 'ntb-3.13' of git://github.com/jonmason/ntb:
  NTB: Disable interrupts and poll under high load
  NTB: Enable Snoop on Primary Side
  NTB: Document HW errata
  NTB: remove duplicate defines
  NTB: correct dmaengine_get/put usage
  NTB: Fix ntb_transport link down race
  ntb: Fix missed call to pci_enable_msix()
  NTB: Fix NTB-RP Link Up
  NTB: Xeon Doorbell errata workaround