void __init uv_setup()

in uv/kernel/setup.c [84:119]

• 32 lines of code
• 1 McCabe index (conditional complexity)

void __init uv_setup(char **cmdline_p)
{
	union uvh_si_addr_map_config_u m_n_config;
	union uvh_node_id_u node_id;
	unsigned long gnode_upper;
	int nid, cpu, m_val, n_val;
	unsigned long mmr_base, lowmem_redir_base, lowmem_redir_size;

	get_lowmem_redirect(&lowmem_redir_base, &lowmem_redir_size);
	node_id.v = uv_read_local_mmr(UVH_NODE_ID);
	m_n_config.v = uv_read_local_mmr(UVH_SI_ADDR_MAP_CONFIG);
	mmr_base = uv_read_local_mmr(UVH_RH_GAM_MMR_OVERLAY_CONFIG_MMR) &
			~UV_MMR_ENABLE;

	m_val = m_n_config.s.m_skt;
	n_val = m_n_config.s.n_skt;
	printk(KERN_DEBUG "UV: global MMR base 0x%lx\n", mmr_base);

	gnode_upper = (((unsigned long)node_id.s.node_id) &
		       ~((1 << n_val) - 1)) << m_val;

	for_each_present_cpu(cpu) {
		nid = cpu_to_node(cpu);
		uv_cpu_hub_info(cpu)->lowmem_remap_base = lowmem_redir_base;
		uv_cpu_hub_info(cpu)->lowmem_remap_top =
			lowmem_redir_base + lowmem_redir_size;
		uv_cpu_hub_info(cpu)->m_val = m_val;
		uv_cpu_hub_info(cpu)->n_val = n_val;
		uv_cpu_hub_info(cpu)->pnode_mask = (1 << n_val) -1;
		uv_cpu_hub_info(cpu)->gpa_mask = (1 << (m_val + n_val)) - 1;
		uv_cpu_hub_info(cpu)->gnode_upper = gnode_upper;
		uv_cpu_hub_info(cpu)->global_mmr_base = mmr_base;
		uv_cpu_hub_info(cpu)->coherency_domain_number = 0;/* ZZZ */
		printk(KERN_DEBUG "UV cpu %d, nid %d\n", cpu, nid);
	}
}