ipmbbridge works over ipmb-dev: https://github.com/openbmc/ipmbbridge/blob/master/ipmbbridged.cpp#L548 Seems like the difference between ipmb-dev and ipmb-host is the only way they act: as an IPMB device (receive requests and sends answers) or as an initiator (sends requests and receives answers). Perhaps, the upstreamed ipmb-dev works in either way (technically, the difference only in send/receive order). On Mon, 20 Apr 2020 at 20:35, Oskar Senft wrote: > Hi Vijay > > Thanks for the pointer! > > I also found both https://github.com/Mellanox/ipmb-host and > https://github.com/openbmc/linux/blob/dev-5.4/drivers/char/ipmi/ipmb_dev_int.c > . > > Is it right that with ipmbbridge I don't need either of them since > ipmbbridge uses the raw i2c dev? > > Thanks > Oskar. > > On Mon, Apr 20, 2020 at 2:12 PM Vijay Khemka wrote: > >> Hi Oskar, >> >> You need to configure your ME channel in ipmb channel config file >> https://github.com/openbmc/ipmbbridge/blob/master/ipmb-channels.json >> >> And make sure ipmbbridge is running. Then you can send get device id >> command to ME from command line itself to test if everything is working. >> >> >> >> busctl call xyz.openbmc_project.Ipmi.Channel.Ipmb >> /xyz/openbmc_project/Ipmi/Channel/Ipmb org.openbmc.Ipmb sendRequest yyyyay >> 1 6 0 0x1 0 >> >> >> >> Regards >> >> -Vijay >> >> >> >> *From: *openbmc on >> behalf of Oskar Senft >> *Date: *Saturday, April 18, 2020 at 6:47 PM >> *To: *OpenBMC Maillist >> *Subject: *Access Intel ME IPMB from BMC >> >> >> >> Hi everyone >> >> >> >> I'm trying to find out how I can access the Intel ME via IPMB from the >> BMC (OpenBMC). >> >> >> >> From what I gathered, Intel ME's IPMB is on the PCH's SMLink0. I know >> this is connected to one of the SMBus modules on my AST2500. But what I >> can't find out is how I actually send commands there? I'm sure I'm missing >> a document that makes this obvious. >> >> >> >> Or is it as simple as dropping IPMI packets onto the bus? >> >> >> >> Is this by any chance already implemented in OpenBMC? >> >> >> >> Thanks for any hints! >> >> >> >> Oskar >> >