Messages in this thread | | | From | Arnaud Pouliquen <> | Subject | [PATCH v3 0/6] Restructure the rpmsg char and introduce the rpmsg-raw channel | Date | Thu, 29 Apr 2021 15:55:01 +0200 |
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Main update from V2 [1] - Management of the endpoint creation/release to handle it for all the use cases in the rpmsg_eptdev_open and rpmsg_eptdev_release function
Other patch updates are described at the end of their commit message.
This series can be applied on git/andersson/remoteproc.git for-next branch (dc0e14fa833b) + "rpmsg: char: Remove useless includes" patch[3].
Series description: This series is the second step in the division of the series [2]: "Introducing a Generic IOCTL Interface for RPMsg Channel Management".
The purpose of this patchset is to: - split the control code related to the control and the endpoint. - define the rpmsg-raw channel, associated with the rpmsg char device to allow it to be instantiated using a name service announcement.
An important point to keep in mind for this patchset is that the concept of channel is associated with a default endpoint. To facilitate communication with the remote side, this default endpoint must have a fixed address.
Therefore, for /dev/rpmsgX device created during the instantiation of he "rpmsg-raw" device, the endpoint creation/release is not dynamically managed on each FS open/close.
This is only applicable for channels probed by the rpmsg bus. The behavior, using the RPMSG_CREATE_EPT_IOCTL and RPMSG_DESTROY_EPT_IOCTL controls, is preserved.
The next step should be: Introduce the IOCTLs RPMSG_CREATE_DEV_IOCTL and RPMSG_DESTROY_DEV_IOCTL to instantiate the rpmsg devices
[1]: https://patchwork.kernel.org/project/linux-remoteproc/list/?series=466357 [2]: https://patchwork.kernel.org/project/linux-remoteproc/list/?series=435523 [3]: https://patchwork.kernel.org/project/linux-remoteproc/patch/20210429080639.6379-1-arnaud.pouliquen@foss.st.com/
Arnaud Pouliquen (6): rpmsg: char: Export eptdev create an destroy functions rpmsg: Move the rpmsg control device from rpmsg_char to rpmsg_ctrl rpmsg: Update rpmsg_chrdev_register_device function rpmsg: char: Add possibility to create and reuse default endpoint rpmsg: char: Introduce a rpmsg driver for the rpmsg char device rpmsg: char: Return error if user tries to destroy a default endpoint.
drivers/rpmsg/Kconfig | 9 ++ drivers/rpmsg/Makefile | 1 + drivers/rpmsg/qcom_glink_native.c | 2 +- drivers/rpmsg/qcom_smd.c | 2 +- drivers/rpmsg/rpmsg_char.c | 223 ++++++++++-------------------- drivers/rpmsg/rpmsg_char.h | 51 +++++++ drivers/rpmsg/rpmsg_ctrl.c | 209 ++++++++++++++++++++++++++++ drivers/rpmsg/rpmsg_internal.h | 8 +- drivers/rpmsg/virtio_rpmsg_bus.c | 2 +- 9 files changed, 350 insertions(+), 157 deletions(-) create mode 100644 drivers/rpmsg/rpmsg_char.h create mode 100644 drivers/rpmsg/rpmsg_ctrl.c
-- 2.17.1
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