diff options
| author | Lukas Auer <lukas.auer@aisec.fraunhofer.de> | 2019-12-08 23:28:50 +0100 |
|---|---|---|
| committer | Andes <uboot@andestech.com> | 2019-12-10 08:23:10 +0800 |
| commit | 8b3e97badf97d6e399014fb4a152031f8a0c94ba (patch) | |
| tree | 63c6e428e63506f5c1010b905159c67b178332f0 /arch/riscv/lib/sbi_ipi.c | |
| parent | b86f6d1e649f237849297b5ec6b5566b7a92b2b4 (diff) | |
riscv: add functions for reading the IPI status
Add the function riscv_get_ipi() for reading the pending status of IPIs.
The supported controllers are Andes' Platform Level Interrupt Controller
(PLIC), the Supervisor Binary Interface (SBI), and SiFive's Core Local
Interruptor (CLINT).
Signed-off-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
Reviewed-by: Rick Chen <rick@andestech.com>
Diffstat (limited to 'arch/riscv/lib/sbi_ipi.c')
| -rw-r--r-- | arch/riscv/lib/sbi_ipi.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/riscv/lib/sbi_ipi.c b/arch/riscv/lib/sbi_ipi.c index 170346da68..9a698ce74e 100644 --- a/arch/riscv/lib/sbi_ipi.c +++ b/arch/riscv/lib/sbi_ipi.c @@ -23,3 +23,14 @@ int riscv_clear_ipi(int hart) return 0; } + +int riscv_get_ipi(int hart, int *pending) +{ + /* + * The SBI does not support reading the IPI status. We always return 0 + * to indicate that no IPI is pending. + */ + *pending = 0; + + return 0; +} |