wireguard-linux/include/linux/mailbox, branch stable

irqchip: Add driver for the RPMI system MSI service group

2025-09-25T20:31:56Z

The RPMI specification defines a system MSI service group which allows application processors to receive MSIs upon system events such as graceful shutdown/reboot request, CPU hotplug event, memory hotplug event, etc. Add an irqchip driver for the RISC-V RPMI system MSI service group to directly receive system MSIs in Linux kernel. Reviewed-by: Thomas Gleixner Signed-off-by: Anup Patel Link: https://lore.kernel.org/r/20250818040920.272664-14-apatel@ventanamicro.com Signed-off-by: Paul Walmsley

clk: Add clock driver for the RISC-V RPMI clock service group

2025-09-25T19:16:48Z

The RPMI specification defines a clock service group which can be accessed via SBI MPXY extension or dedicated S-mode RPMI transport. Add mailbox client based clock driver for the RISC-V RPMI clock service group. Reviewed-by: Stephen Boyd Reviewed-by: Andy Shevchenko Co-developed-by: Anup Patel Signed-off-by: Anup Patel Signed-off-by: Rahul Pathak Link: https://lore.kernel.org/r/20250818040920.272664-11-apatel@ventanamicro.com [pjw@kernel.org: converted rpmi_clkrate_u64 macro to a function; replaced bare constant with a macro] Signed-off-by: Paul Walmsley

mailbox: Add common header for RPMI messages sent via mailbox

2025-09-24T22:58:00Z

The RPMI based mailbox controller drivers and mailbox clients need to share defines related to RPMI messages over mailbox interface so add a common header for this purpose. Acked-by: Jassi Brar Co-developed-by: Rahul Pathak Signed-off-by: Rahul Pathak Signed-off-by: Anup Patel Link: https://lore.kernel.org/r/20250818040920.272664-5-apatel@ventanamicro.com Signed-off-by: Paul Walmsley

mailbox: mtk-cmdq: remove cl in struct cmdq_pkt

2025-03-27T01:58:24Z

Every client driver has the struct cmdq_client information, so it's not necessary to store it in struct cmdq_pkt. cl is used to store struct cmdq_client information and now no client driver use it, so remove it. Signed-off-by: Chun-Kuang Hu Signed-off-by: Jassi Brar

mailbox: add Samsung Exynos driver

2025-01-18T22:18:48Z

The Samsung Exynos mailbox controller, used on Google GS101 SoC, has 16 flag bits for hardware interrupt generation and a shared register for passing mailbox messages. When the controller is used by the ACPM interface the shared register is ignored and the mailbox controller acts as a doorbell. The controller just raises the interrupt to APM after the ACPM interface has written the message to SRAM. Add support for the Samsung Exynos mailbox controller. Signed-off-by: Tudor Ambarus Signed-off-by: Jassi Brar

mailbox: add Microchip IPC support

2025-01-18T22:09:48Z

Add a mailbox controller driver for the Microchip Inter-processor Communication (IPC), which is used to send and receive data between processors. The driver uses the RISC-V Supervisor Binary Interface (SBI) to communicate with software running in machine mode (M-mode) to access the IPC hardware block. Additional details on the Microchip vendor extension and the IPC function IDs described in the driver can be found in the following documentation: https://github.com/linux4microchip/microchip-sbi-ecall-extension This SBI interface in this driver is compatible with the Mi-V Inter-hart Communication (IHC) IP. Transmitting and receiving data through the mailbox framework is done through struct mchp_ipc_msg. Signed-off-by: Valentina Fernandez Signed-off-by: Jassi Brar

mailbox: zynqmp: Fix typo in IPI documentation

2023-03-14T19:28:12Z

Xilinx IPI message buffers allows 32-byte data transfer. Fix documentation that says 12 bytes Fixes: 4981b82ba2ff ("mailbox: ZynqMP IPI mailbox controller") Signed-off-by: Tanmay Shah Acked-by: Michal Simek Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20230311012407.1292118-4-tanmay.shah@amd.com Signed-off-by: Mathieu Poirier

mailbox: mtk-cmdq: Remove proprietary cmdq_task_cb

2022-08-02T20:06:57Z

rx_callback is a standard mailbox callback mechanism and could cover the function of proprietary cmdq_task_cb, so use the standard one instead of the proprietary one. Client driver has changed to use standard rx_callback, so remove proprietary cmdq_task_cb. Signed-off-by: Chun-Kuang Hu Reviewed-by: Matthias Brugger Signed-off-by: Jassi Brar

mailbox: mtk-cmdq: Add struct cmdq_pkt in struct cmdq_cb_data

2021-06-26T16:40:20Z

Current client use 'struct cmdq_pkt' as callback data, so change 'void *data' to 'struct cmdq_pkt *pkt'. Keep data until client use pkt instead of data. Signed-off-by: Chun-Kuang Hu Reviewed-by: Yongqiang Niu Signed-off-by: Jassi Brar

mailbox: mtk-cmdq: Remove cmdq_cb_status

2021-06-26T16:39:54Z

cmdq_cb_status is an error status. Use the standard error number instead of cmdq_cb_status to prevent status duplication. Signed-off-by: Chun-Kuang Hu Reviewed-by: Yongqiang Niu Signed-off-by: Jassi Brar