csr_readl
csr_writel(csr_readl(0xffffffec) | 0x1, 0xffffffec);
if (cpu_has_csr() && csr_readl(LOONGSON_CSR_FEATURES) & LOONGSON_CSRF_IPI) {
action = csr_readl(LOONGSON_CSR_IPI_STATUS);
u32 csr_readl(struct vpu_core *core, u32 reg);
if (csr_readl(core, IMX8Q_CSR_CM0Px_CPUWAIT) == 1)
csr_temp_enable = csr_readl(LOONGSON_CSR_FEATURES) &
reg = (csr_readl(LOONGSON_CSR_CPUTEMP) & 0xff);