| From: |
| Grégoire Layet <gregoire.layet-AT-9elements.com> |
| To: |
| joel-AT-jms.id.au, andrew-AT-codeconstruct.com.au |
| Subject: |
| [PATCH v2 0/2] soc: aspeed: Add BMC and host driver for PCIe BMC device |
| Date: |
| Mon, 08 Jun 2026 14:51:21 +0000 |
| Message-ID: |
| <cover.1780929570.git.gregoire.layet@9elements.com> |
| Cc: |
| andrew-AT-lunn.ch, jacky_chou-AT-aspeedtech.com, yh_chung-AT-aspeedtech.com, ninad-AT-linux.ibm.com, linux-aspeed-AT-lists.ozlabs.org, linux-arm-kernel-AT-lists.infradead.org, linux-kernel-AT-vger.kernel.org, Grégoire Layet <gregoire.layet-AT-9elements.com> |
| Archive-link: |
| Article |
This is a v2 for upstreaming the VUART over PCIe BMC device driver from the ASPEED kernel SDK (branch master-v6.18) [1].
There are two drivers: a BMC-side driver and a host-side driver.
Together they enable host<->BMC VUART communication via PCIe.
This v2 narrows down the scope to VUART support only, to address review feedback on v1 [2]
that the additional subsystems (shared memory, doorbell and mailbox) were software-defined
IPC channels better used with rpmsg or virtio.
Those subsystems are deferred to a separate future series.
VUART data flow and MSI interrupts have been verified working on the test hardware.
Tested on:
BMC:
- Asus IPMI Kommando Card R1.01, AST2600 A3.
- OpenBMC
Host:
- Linux kernel v7.0.0
This v2 only supports AST2600; the AST2700 is untested and not supported by this patch.
Changes since v1 [2]:
- BMC driver: trimmed down to only SCU and PCIe initialization
- Host driver: removed shared memory misc device, sysfs doorbell, mailbox setup and message queue handler.
Driver now only supports VUART registration.
- Host driver: Fixed cleanup path: removed pci_release_regions() call as there was no matching pci_request_regions call
[1]: https://github.com/AspeedTech-BMC/linux/tree/aspeed-maste...
[2]: https://lore.kernel.org/linux-aspeed/cover.1780409151.git...
Grégoire Layet (2):
soc: aspeed: add BMC-side PCIe BMC device driver
soc: aspeed: add host-side PCIe BMC device driver
drivers/soc/aspeed/Kconfig | 15 ++
drivers/soc/aspeed/Makefile | 2 +
drivers/soc/aspeed/aspeed-bmc-dev.c | 187 +++++++++++++++++
drivers/soc/aspeed/aspeed-host-bmc-dev.c | 249 +++++++++++++++++++++++
4 files changed, 453 insertions(+)
create mode 100644 drivers/soc/aspeed/aspeed-bmc-dev.c
create mode 100644 drivers/soc/aspeed/aspeed-host-bmc-dev.c
--
2.51.2
