Messages in this thread | | | From | Jon Mason <> | Date | Tue, 5 Dec 2017 14:15:25 -0500 | Subject | Re: [PATCH 0/7] Switchtec NTB Crosslink Support |
| |
On Wed, Nov 29, 2017 at 12:58 PM, Logan Gunthorpe <logang@deltatee.com> wrote: > Also, I forgot to mention, this patch set is based on today's ntb-next.
All of these look sane to me. Assuming they apply cleanly, adding to ntb-next.
Thanks, Jon
> > Logan > > > On 29/11/17 10:55 AM, Logan Gunthorpe wrote: >> >> Hi, >> >> This patch series adds support for the Switchtec Crosslink feature. >> Crosslink is similar to B2B in that it allows two switches to be >> connected back to back. >> >> Two switches can already be connected between two hosts, however with this >> setup, there would be no symmetry as one switch would handle NTB and the >> other would just need to be a single partition switch. Our customers are >> looking for a completely symmetric solution such that a host or switch >> can be easily replaced without needing to worry about which half was >> replaced. >> >> Crosslink solves this problem by having each of the switches configured >> with two partitions. This results in a special host-less partition in >> the middle of the connection which can be managed in such a way as >> to forward all the traffic and still provide all the same NTB >> functionality. In this way, both hosts and switches can be identical. >> >> Please see Patch 6 for a bit more detailed description of how Crosslink >> works. >> >> Thanks, >> >> Logan >> >> Kelvin Cao (1): >> ntb_hw_switchtec: Allow using Switchtec NTB in multi-partition setups >> >> Logan Gunthorpe (6): >> ntb_hw_switchtec: Keep track of the number of LUT windows used by the >> driver >> ntb_hw_switchtec: Create helper function to setup reserved LUT MWs >> ntb_hw_switchtec: Make switchtec_ntb_init_req_id_table() more general >> ntb_hw_switchtec: Expand PFF CSR registers >> ntb_hw_switchtec: Add initialization code for crosslink >> ntb_hw_switchtec: Crosslink doorbells and messages >> >> drivers/ntb/hw/mscc/ntb_hw_switchtec.c | 494 >> +++++++++++++++++++++++++++------ >> include/linux/ntb.h | 15 +- >> include/linux/switchtec.h | 23 +- >> 3 files changed, 435 insertions(+), 97 deletions(-) >> >> -- >> 2.11.0 >> >
| |