opensbi.git/lib/utils/ipi/fdt_ipi_mswi.c, branch v1.7

lib: utils/ipi: Use fdt_driver for initialization

2024-11-28T12:12:05Z

The ipi driver subsystem does not need any extra data, so it can use `struct fdt_driver` directly. The generic fdt_ipi_init() performs a best-effort initialization of all matching DT nodes. Signed-off-by: Samuel Holland Reviewed-by: Anup Patel

platform: Drop IPI warm init and exit hooks

2024-11-11T12:51:04Z

Now that the SBI IPI core clears IPIs at warm boot in a generic way, none of the drivers or platforms use these hooks, and we can remove them. Platforms need only to initialize the driver once during cold init. If other hooks are needed in the future, they can be added to struct sbi_ipi_device. Signed-off-by: Samuel Holland Reviewed-by: Anup Patel

lib: sbi_ipi: Move initial IPI clear to sbi_ipi_init()

2024-11-11T12:48:35Z

sbi_ipi_init() expects the platform warm init function to clear IPIs on the local hart, but there is already a generic function to do this. After this change, none of the existing drivers need a warm init callback. Signed-off-by: Samuel Holland Reviewed-by: Anup Patel

lib: utils/ipi: Constify FDT pointers in parsing functions

2024-08-24T07:32:33Z

Indicate that none of these functions modify the devicetree by constifying the parameter type. Signed-off-by: Samuel Holland Reviewed-by: Andrew Jones Reviewed-by: Anup Patel

lib: utils/timer: mtimer: only use regname for aclint

2023-12-27T06:27:33Z

The parser will fail if the timer is clint timer and has regname property. As the regname is only meaningful for aclint, it is more robust to only check regname for aclint timer. Fixes: 6112d58 ("lib: utils/fdt: Allow to use reg-names when parsing ACLINT") Signed-off-by: Inochi Amaoto Reviewed-by: Anup Patel

lib: utils/ipi: mswi: add separate T-Head C9xx CLINT mswi compatible

2023-11-16T11:25:28Z

Like the mtimer of T-HEAD C9xx clint, the mswi also needs new compatible string to avoid misuse. Signed-off-by: Inochi Amaoto Link: https://lore.kernel.org/linux-riscv/1f6b82a1864477a51db33d3f295889ff985b497b.1696433229.git.unicorn_wang@outlook.com/ Reviewed-by: Guo Ren Reviewed-by: Anup Patel

lib: utils/ipi: Use heap in ACLINT MSWI driver

2023-06-05T10:25:56Z

Let's use heap allocation in ACLINT MSWI driver instead of using a fixed size global array. Signed-off-by: Anup Patel Reviewed-by: Andrew Jones

lib: utils/ipi: mswi: add T-Head C9xx CLINT compatible

2022-12-17T05:31:00Z

Althoug the MTIMER part of a C9xx CLINT differs from a SiFive one, the MSWI part is compliant. Add T-Head C9xx CLINT compatible string to fdt_ipi_mswi code, sharing the same codepath with SiFive CLINT. Signed-off-by: Icenowy Zheng Reviewed-by: Anup Patel

lib: utils/timer: Remove Allwinner D1 CLINT compatibles

2022-06-22T05:25:37Z

The allwinner,sun20i-d1-clint compatible string is not documented in any official binding, so it should not be used by drivers. The MSWI in the D1 CLINT is compatible with the ACLINT specification, so it can take advantage of generic driver support. However, that is only possible if the MSWI and MTIMER are split into separate DT nodes. This means the final binding for this device is likely to be incompatible with what is implemented here. Remove this compatible string from the driver to prevent it from appearing in a stable version and causing future issues. Signed-off-by: Samuel Holland Reviewed-by: Anup Patel

lib: utils/timer: Add a separate compatible for the D1 CLINT

2022-06-21T03:50:59Z

The CLINT in the Allwinner D1 SoC apparently does not support 64-bit MMIO access. A property was added to support this quirk (and that property was copied to the ACLINT MTIMER code). However, since this difference in behavior makes the D1 CLINT incompatible with the SiFive CLINT's programming interface, a better solution is to use a separate compatible string. Signed-off-by: Samuel Holland Reviewed-by: Anup Patel