System supporting NTB (Non-Transparent Bridge)

I'm recently purchasing a set of machines to do my NTB experiments on Intel's machine. So I did a few search on Intel's spec which has this cool feature. It seems that currently no other vendor except Intel has NTB-capable motherboard. And my local vendor even made a mistake by giving me a machine with NTB-capable CPU but not NTB-capable server board (R1000GZ/GL). Turn out I have to carefully check the spec and told them what I need in detail.

NTB-capable CPU: E5-2620

Vol1 and Vol2:
http://www.intel.com/content/www/us/en/processors/xeon/xeon-e5-1600-2600-vol-1-datasheet.html
http://www.intel.com/content/dam/www/public/us/en/documents/datasheets/xeon-e5-1600-2600-vol-2-datasheet.pdf

NTB: in chapter 3.3
QuickData: DMA channel support in chapter 3.4

NTB-capable Server Board: S1600JP4

http://download.intel.com/support/motherboards/server/sb-s1600jp/sb/g68018004_s1600jp_tps_r1_4.pdf

Intel® Server Board S1600JP4 BIOS

Root Complex Peer-to-Peer support

In 3.4.1, S1600JP4
The Intel® C600 PCH provides up to eight PCI Express* Root Ports, supporting the PCI
http://download.intel.com/support/motherboards/server/sb-s1600jp/sb/g68018004_s1600jp_tps_r1_4.pdf

Processor Integrated I/O (IIO) configuration, peer-to-peer configurations are mentioned.
http://www.intel.com/content/dam/www/public/us/en/documents/datasheets/xeon-e5-1600-2600-vol-2-datasheet.pdf

Intel C600PCH
http://www.intel.com/content/dam/www/public/us/en/documents/design-guides/c600-series-chipset-thermal-guide.pdf

Other chipset with P2P root complex: Intel MCH 5100, 5400, 7520都有peer-to-peer RC
http://www.intel.com/content/dam/doc/datasheet/5400-chipset-memory-controller-hub-datasheet.pdf
However, I'm not 100% sure this supports peer-to-peer root complex.

References

Intel's forum
http://communities.intel.com/message/194756#194756

Server Board with NTB support
S1600JP/S2600JF/S2600CO/S2600WP

Server board without NTB support
S2600CP, S2600GZ/S2600GL, R1000GZ/GL server
If your product doesn't have JP, JF, CO, or WP in it, then it does not support NTB.

Jon Mason’s blog
https://github.com/jonmason/ntb/wiki