static int __sbi_rfence_v02_call()

in kernel/sbi.c [259:310]

• 48 lines of code
• 9 McCabe index (conditional complexity)

static int __sbi_rfence_v02_call(unsigned long fid, unsigned long hmask_val,
				 unsigned long hbase, unsigned long start,
				 unsigned long size, unsigned long arg4,
				 unsigned long arg5)
{
	struct sbiret ret = {0};
	int ext = SBI_EXT_RFENCE;
	int result = 0;

	switch (fid) {
	case SBI_EXT_RFENCE_REMOTE_FENCE_I:
		ret = sbi_ecall(ext, fid, hmask_val, hbase, 0, 0, 0, 0);
		break;
	case SBI_EXT_RFENCE_REMOTE_SFENCE_VMA:
		ret = sbi_ecall(ext, fid, hmask_val, hbase, start,
				size, 0, 0);
		break;
	case SBI_EXT_RFENCE_REMOTE_SFENCE_VMA_ASID:
		ret = sbi_ecall(ext, fid, hmask_val, hbase, start,
				size, arg4, 0);
		break;

	case SBI_EXT_RFENCE_REMOTE_HFENCE_GVMA:
		ret = sbi_ecall(ext, fid, hmask_val, hbase, start,
				size, 0, 0);
		break;
	case SBI_EXT_RFENCE_REMOTE_HFENCE_GVMA_VMID:
		ret = sbi_ecall(ext, fid, hmask_val, hbase, start,
				size, arg4, 0);
		break;
	case SBI_EXT_RFENCE_REMOTE_HFENCE_VVMA:
		ret = sbi_ecall(ext, fid, hmask_val, hbase, start,
				size, 0, 0);
		break;
	case SBI_EXT_RFENCE_REMOTE_HFENCE_VVMA_ASID:
		ret = sbi_ecall(ext, fid, hmask_val, hbase, start,
				size, arg4, 0);
		break;
	default:
		pr_err("unknown function ID [%lu] for SBI extension [%d]\n",
		       fid, ext);
		result = -EINVAL;
	}

	if (ret.error) {
		result = sbi_err_map_linux_errno(ret.error);
		pr_err("%s: hbase = [%lu] hmask = [0x%lx] failed (error [%d])\n",
		       __func__, hbase, hmask_val, result);
	}

	return result;
}