lkml.org 
[lkml]   [2018]   [Dec]   [6]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Subject[PATCH v2 0/3] ntb_hw_switchtec: Added support of >=4G memory windows
Date
Hi, Everyone,

This patch series adds support of >=4G memory windows.

Current Switchtec's BAR setup registers are limited to 32bits,
corresponding to the maximum MW (memory window) size is <4G.
Increase the MW sizes with the addition of the BAR Setup Extension
Register for the upper 32bits of a 64bits MW size. This increases the MW
range to between 4K and 2^63.

Additionally, we've made the following changes:

* debug print 64bit aligned crosslink BAR numbers
* Fix the array size of NT req id mapping table

Tested with ntb_test.sh successfully based on NTB fixes series from
Logan Gunthorpe <logang@deltatee.com> at
https://github.com/sbates130272/linux-p2pmem on branch of
ntb_multiport_fixes

Regards,
Wesley

--

Changed since v1:
- Using upper_32_bits() and lower_32_bits() marcos makes it easier
to read and avoids compiler warning on 32-bit arch
- Reorder the patches to make the bug fixes first and add a "Fixes"
line to the commit messages

--
Paul Selles (2):
ntb_hw_switchtec: debug print 64bit aligned crosslink BAR Numbers
ntb_hw_switchtec: Added support of >=4G memory windows

Wesley Sheng (1):
ntb_hw_switchtec: NT req id mapping table register entry number should
be 512

drivers/ntb/hw/mscc/ntb_hw_switchtec.c | 11 ++++++++---
include/linux/switchtec.h | 10 +++++++---
2 files changed, 15 insertions(+), 6 deletions(-)

--
2.7.4

\
 
 \ /
  Last update: 2018-12-06 08:33    [W:0.033 / U:1.524 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site