Messages in this thread | | | Subject | Re: [PATCH 0/5] bus: fsl-mc: add userspace support | From | Laurentiu Tudor <> | Date | Wed, 27 Jan 2021 16:06:56 +0200 |
| |
On 1/27/2021 4:02 PM, Greg KH wrote: > On Thu, Jan 14, 2021 at 07:07:47PM +0200, Ioana Ciornei wrote: >> From: Ioana Ciornei <ioana.ciornei@nxp.com> >> >> This patch set adds userspace support in the fsl-mc bus along with a >> rescan attribute to the root DPRC container. An earlier discussion on >> this functionality can be found at the link below. I didn't continue >> with the versioning scheme since quite some time has passed since the >> last discussion. >> https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Flkml.org%2Flkml%2F2018%2F11%2F20%2F1162&data=04%7C01%7Claurentiu.tudor%40nxp.com%7C8d74c7b04f864d17419508d8c2cc3e10%7C686ea1d3bc2b4c6fa92cd99c5c301635%7C0%7C0%7C637473529759283328%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=kDWLNqq91k5LW74jgZ%2Blu%2FZJfCmeLUZm5DccUiS4m94%3D&reserved=0 >> >> The FSL_MC_SEND_MC_COMMAND ioctl acts as a direct passthrough to the >> Management Complex (or MC) by passing fixed-length command/response >> pairs. Keeping in mind that the MC manages DPAA2 hardware resources and >> provides and object-based abstraction for sofware drivers, the proposed >> ioctl interface enables userspace tools to do the following: >> - Get layout information about the available resources abstracted and >> exported by the Management Complex firmware. This is especially >> useful to generate a complete description of the current hardware >> resource partitioning. >> - Manage DPAA2 objects lifecycle (create, destroy) and establish >> connection between different components as needed. >> >> The ioctl interface is intended for dynamic usecases where DPAA2 objects >> need to be created on demand or destroyed so that the underlying >> hardware resources can be further repurposed. In static usecases, >> depending on the requirements, a firmware configuration file can be used >> to describe the needed DPAA2 objects, their attributes or any link >> between them. >> >> Each command received through the ioctl interface is first checked >> against a list of accepted MC commands. Also, commands which would alter >> the hardware resource management require CAP_NET_ADMIN. The command is >> also check so that it does not contain garbage beyond the maximum size >> expected for that command id. > > I need an ack from the maintainers here before I can take this series. >
Sorry, got caught with other things and forgot about it. Done.
--- Thanks & Best Regards, Laurentiu
| |