// SPDX-License-Identifier: BSD-2-Clause #include #include #include #include #include static int sbi_ecall_susp_handler(unsigned long extid, unsigned long funcid, const struct sbi_trap_regs *regs, unsigned long *out_val, struct sbi_trap_info *out_trap) { int ret = SBI_ENOTSUPP; if (funcid == SBI_EXT_SUSP_SUSPEND) ret = sbi_system_suspend(regs->a0, regs->a1, regs->a2); if (ret >= 0) { *out_val = ret; ret = 0; } return ret; } static int sbi_ecall_susp_probe(unsigned long extid, unsigned long *out_val) { u32 type, count = 0; /* * At least one suspend type should be supported by the * platform for the SBI SUSP extension to be usable. */ for (type = 0; type <= SBI_SUSP_SLEEP_TYPE_LAST; type++) { if (sbi_system_suspend_supported(type)) count++; } *out_val = count ? 1 : 0; return 0; } struct sbi_ecall_extension ecall_susp = { .extid_start = SBI_EXT_SUSP, .extid_end = SBI_EXT_SUSP, .handle = sbi_ecall_susp_handler, .probe = sbi_ecall_susp_probe, };