int numa_cpu_node(int cpu)
{
int apicid = early_per_cpu(x86_cpu_to_apicid, cpu);
if (apicid != BAD_APICID)
return __apicid_to_node[apicid];
return NUMA_NO_NODE;
}
void __init generic_bigsmp_probe(void)
{
unsigned int cpu;
if (!probe_bigsmp())
return;
apic = &apic_bigsmp;
for_each_possible_cpu(cpu) {
if (early_per_cpu(x86_cpu_to_logical_apicid,
cpu) == BAD_APICID)
continue;
early_per_cpu(x86_cpu_to_logical_apicid, cpu) =
bigsmp_early_logical_apicid(cpu);
}
pr_info("Overriding APIC driver with %s\n", apic_bigsmp.name);
}
static int summit_early_logical_apicid(int cpu)
{
int count = 0;
u8 my_id = early_per_cpu(x86_cpu_to_apicid, cpu);
u8 my_cluster = APIC_CLUSTER(my_id);
#ifdef CONFIG_SMP
u8 lid;
int i;
for (count = 0, i = nr_cpu_ids; --i >= 0; ) {
lid = early_per_cpu(x86_cpu_to_logical_apicid, i);
if (lid != BAD_APICID && APIC_CLUSTER(lid) == my_cluster)
++count;
}
#endif
BUG_ON(count >= XAPIC_DEST_CPUS_SHIFT);
return my_cluster | (1UL << count);
}
static void summit_init_apic_ldr(void)
{
int cpu = smp_processor_id();
unsigned long id = early_per_cpu(x86_cpu_to_logical_apicid, cpu);
unsigned long val;
apic_write(APIC_DFR, SUMMIT_APIC_DFR_VALUE);
val = apic_read(APIC_LDR) & ~APIC_LDR_MASK;
val |= SET_APIC_LOGICAL_ID(id);
apic_write(APIC_LDR, val);
}
static int summit_early_logical_apicid(int cpu)
{
int count = 0;
u8 my_id = early_per_cpu(x86_cpu_to_apicid, cpu);
u8 my_cluster = APIC_CLUSTER(my_id);
#ifdef CONFIG_SMP
u8 lid;
int i;
/* Create logical APIC IDs by counting CPUs already in cluster. */
for (count = 0, i = nr_cpu_ids; --i >= 0; ) {
lid = early_per_cpu(x86_cpu_to_logical_apicid, i);
if (lid != BAD_APICID && APIC_CLUSTER(lid) == my_cluster)
++count;
}
#endif
/* We only have a 4 wide bitmap in cluster mode. If a deranged
* BIOS puts 5 CPUs in one APIC cluster, we're hosed. */
BUG_ON(count >= XAPIC_DEST_CPUS_SHIFT);
return my_cluster | (1UL << count);
}
static unsigned int summit_cpu_mask_to_apicid(const struct cpumask *cpumask)
{
unsigned int round = 0;
int cpu, apicid = 0;
for_each_cpu(cpu, cpumask) {
int new_apicid = early_per_cpu(x86_cpu_to_logical_apicid, cpu);
if (round && APIC_CLUSTER(apicid) != APIC_CLUSTER(new_apicid)) {
printk("%s: Not a valid mask!\n", __func__);
return BAD_APICID;
}
apicid |= new_apicid;
round++;
}
static inline int
summit_cpu_mask_to_apicid(const struct cpumask *cpumask, unsigned int *dest_id)
{
unsigned int round = 0;
unsigned int cpu, apicid = 0;
/*
* The cpus in the mask must all be on the apic cluster.
*/
for_each_cpu_and(cpu, cpumask, cpu_online_mask) {
int new_apicid = early_per_cpu(x86_cpu_to_logical_apicid, cpu);
if (round && APIC_CLUSTER(apicid) != APIC_CLUSTER(new_apicid)) {
pr_err("Not a valid mask!\n");
return -EINVAL;
}
apicid |= new_apicid;
round++;
}
static unsigned int es7000_cpu_mask_to_apicid(const struct cpumask *cpumask)
{
unsigned int round = 0;
int cpu, uninitialized_var(apicid);
/*
* The cpus in the mask must all be on the apic cluster.
*/
for_each_cpu(cpu, cpumask) {
int new_apicid = early_per_cpu(x86_cpu_to_logical_apicid, cpu);
if (round && APIC_CLUSTER(apicid) != APIC_CLUSTER(new_apicid)) {
WARN(1, "Not a valid mask!");
return BAD_APICID;
}
apicid = new_apicid;
round++;
}
/**
* acpi_register_lapic - register a local apic and generates a logic cpu number
* @id: local apic id to register
* @acpiid: ACPI id to register
* @enabled: this cpu is enabled or not
*
* Returns the logic cpu number which maps to the local apic
*/
static int acpi_register_lapic(int id, u32 acpiid, u8 enabled)
{
unsigned int ver = 0;
int cpu;
if (id >= MAX_LOCAL_APIC) {
printk(KERN_INFO PREFIX "skipped apicid that is too big\n");
return -EINVAL;
}
if (boot_cpu_physical_apicid != -1U)
ver = boot_cpu_apic_version;
cpu = __generic_processor_info(id, ver, enabled);
if (cpu >= 0)
early_per_cpu(x86_cpu_to_acpiid, cpu) = acpiid;
return cpu;
}
static int es7000_early_logical_apicid(int cpu)
{
/* on es7000, logical apicid is the same as physical */
return early_per_cpu(x86_bios_cpu_apicid, cpu);
}
static int bigsmp_early_logical_apicid(int cpu)
{
/* on bigsmp, logical apicid is the same as physical */
return early_per_cpu(x86_cpu_to_apicid, cpu);
}
void __cpuinit generic_processor_info(int apicid, int version)
{
int cpu;
if (version == 0x0) {
pr_warning("BIOS bug, APIC version is 0 for CPU#%d! "
"fixing up to 0x10. (tell your hw vendor)\n",
version);
version = 0x10;
}
apic_version[apicid] = version;
if (num_processors >= nr_cpu_ids) {
int max = nr_cpu_ids;
int thiscpu = max + disabled_cpus;
pr_warning(
"ACPI: NR_CPUS/possible_cpus limit of %i reached."
" Processor %d/0x%x ignored.\n", max, thiscpu, apicid);
disabled_cpus++;
return;
}
num_processors++;
cpu = cpumask_next_zero(-1, cpu_present_mask);
if (version != apic_version[boot_cpu_physical_apicid])
WARN_ONCE(1,
"ACPI: apic version mismatch, bootcpu: %x cpu %d: %x\n",
apic_version[boot_cpu_physical_apicid], cpu, version);
physid_set(apicid, phys_cpu_present_map);
if (apicid == boot_cpu_physical_apicid) {
cpu = 0;
}
if (apicid > max_physical_apicid)
max_physical_apicid = apicid;
#ifdef CONFIG_X86_32
switch (boot_cpu_data.x86_vendor) {
case X86_VENDOR_INTEL:
if (num_processors > 8)
def_to_bigsmp = 1;
break;
case X86_VENDOR_AMD:
if (max_physical_apicid >= 8)
def_to_bigsmp = 1;
}
#endif
#if defined(CONFIG_SMP) || defined(CONFIG_X86_64)
early_per_cpu(x86_cpu_to_apicid, cpu) = apicid;
early_per_cpu(x86_bios_cpu_apicid, cpu) = apicid;
#endif
set_cpu_possible(cpu, true);
set_cpu_present(cpu, true);
}
