#include <linux/kernel.h>
#include <linux/threads.h>
+#include <linux/cpu.h>
#include <linux/cpumask.h>
#include <linux/string.h>
#include <linux/ctype.h>
#include <linux/sched.h>
#include <linux/module.h>
#include <linux/hardirq.h>
+#include <linux/timer.h>
+#include <linux/proc_fs.h>
+#include <asm/current.h>
#include <asm/smp.h>
#include <asm/ipi.h>
#include <asm/genapic.h>
/* Start with all IRQs pointing to boot CPU. IRQ balancing will shift them. */
-static const cpumask_t *uv_target_cpus(void)
+static const struct cpumask *uv_target_cpus(void)
{
- return &cpumask_of_cpu(0);
+ return cpumask_of(0);
}
-static void uv_vector_allocation_domain(int cpu, cpumask_t *retmask)
+static void uv_vector_allocation_domain(int cpu, struct cpumask *retmask)
{
- cpus_clear(*retmask);
- cpu_set(cpu, *retmask);
+ cpumask_clear(retmask);
+ cpumask_set_cpu(cpu, retmask);
}
int uv_wakeup_secondary(int phys_apicid, unsigned int start_rip)
uv_write_global_mmr64(pnode, UVH_IPI_INT, val);
}
-static void uv_send_IPI_mask(const cpumask_t *mask, int vector)
+static void uv_send_IPI_mask(const struct cpumask *mask, int vector)
{
unsigned int cpu;
- for_each_cpu_mask_nr(cpu, *mask)
+ for_each_cpu(cpu, mask)
uv_send_IPI_one(cpu, vector);
}
-static void uv_send_IPI_mask_allbutself(const cpumask_t *mask, int vector)
+static void uv_send_IPI_mask_allbutself(const struct cpumask *mask, int vector)
{
unsigned int cpu;
unsigned int this_cpu = smp_processor_id();
- for_each_cpu_mask_nr(cpu, *mask)
+ for_each_cpu(cpu, mask)
if (cpu != this_cpu)
uv_send_IPI_one(cpu, vector);
}
static void uv_send_IPI_all(int vector)
{
- uv_send_IPI_mask(&cpu_online_map, vector);
+ uv_send_IPI_mask(cpu_online_mask, vector);
}
static int uv_apic_id_registered(void)
{
}
-static unsigned int uv_cpu_mask_to_apicid(const cpumask_t *cpumask)
+static unsigned int uv_cpu_mask_to_apicid(const struct cpumask *cpumask)
{
int cpu;
* We're using fixed IRQ delivery, can only return one phys APIC ID.
* May as well be the first.
*/
- cpu = first_cpu(*cpumask);
+ cpu = cpumask_first(cpumask);
if ((unsigned)cpu < nr_cpu_ids)
return per_cpu(x86_cpu_to_apicid, cpu);
else
return BAD_APICID;
}
-static unsigned int uv_cpu_mask_to_apicid_and(const cpumask_t *cpumask,
- const cpumask_t *andmask)
+static unsigned int uv_cpu_mask_to_apicid_and(const struct cpumask *cpumask,
+ const struct cpumask *andmask)
{
int cpu;
* We're using fixed IRQ delivery, can only return one phys APIC ID.
* May as well be the first.
*/
- while ((cpu = next_cpu(-1, *cpumask)) < nr_cpu_ids)
- if (cpu_isset(cpu, *andmask))
- return per_cpu(x86_cpu_to_apicid, cpu);
+ for_each_cpu_and(cpu, cpumask, andmask)
+ if (cpumask_test_cpu(cpu, cpu_online_mask))
+ break;
+ if (cpu < nr_cpu_ids)
+ return per_cpu(x86_cpu_to_apicid, cpu);
return BAD_APICID;
}
sn_rtc_cycles_per_second = ticks_per_sec;
}
+/*
+ * percpu heartbeat timer
+ */
+static void uv_heartbeat(unsigned long ignored)
+{
+ struct timer_list *timer = &uv_hub_info->scir.timer;
+ unsigned char bits = uv_hub_info->scir.state;
+
+ /* flip heartbeat bit */
+ bits ^= SCIR_CPU_HEARTBEAT;
+
+ /* is this cpu idle? */
+ if (idle_cpu(raw_smp_processor_id()))
+ bits &= ~SCIR_CPU_ACTIVITY;
+ else
+ bits |= SCIR_CPU_ACTIVITY;
+
+ /* update system controller interface reg */
+ uv_set_scir_bits(bits);
+
+ /* enable next timer period */
+ mod_timer(timer, jiffies + SCIR_CPU_HB_INTERVAL);
+}
+
+static void __cpuinit uv_heartbeat_enable(int cpu)
+{
+ if (!uv_cpu_hub_info(cpu)->scir.enabled) {
+ struct timer_list *timer = &uv_cpu_hub_info(cpu)->scir.timer;
+
+ uv_set_cpu_scir_bits(cpu, SCIR_CPU_HEARTBEAT|SCIR_CPU_ACTIVITY);
+ setup_timer(timer, uv_heartbeat, cpu);
+ timer->expires = jiffies + SCIR_CPU_HB_INTERVAL;
+ add_timer_on(timer, cpu);
+ uv_cpu_hub_info(cpu)->scir.enabled = 1;
+ }
+
+ /* check boot cpu */
+ if (!uv_cpu_hub_info(0)->scir.enabled)
+ uv_heartbeat_enable(0);
+}
+
+#ifdef CONFIG_HOTPLUG_CPU
+static void __cpuinit uv_heartbeat_disable(int cpu)
+{
+ if (uv_cpu_hub_info(cpu)->scir.enabled) {
+ uv_cpu_hub_info(cpu)->scir.enabled = 0;
+ del_timer(&uv_cpu_hub_info(cpu)->scir.timer);
+ }
+ uv_set_cpu_scir_bits(cpu, 0xff);
+}
+
+/*
+ * cpu hotplug notifier
+ */
+static __cpuinit int uv_scir_cpu_notify(struct notifier_block *self,
+ unsigned long action, void *hcpu)
+{
+ long cpu = (long)hcpu;
+
+ switch (action) {
+ case CPU_ONLINE:
+ uv_heartbeat_enable(cpu);
+ break;
+ case CPU_DOWN_PREPARE:
+ uv_heartbeat_disable(cpu);
+ break;
+ default:
+ break;
+ }
+ return NOTIFY_OK;
+}
+
+static __init void uv_scir_register_cpu_notifier(void)
+{
+ hotcpu_notifier(uv_scir_cpu_notify, 0);
+}
+
+#else /* !CONFIG_HOTPLUG_CPU */
+
+static __init void uv_scir_register_cpu_notifier(void)
+{
+}
+
+static __init int uv_init_heartbeat(void)
+{
+ int cpu;
+
+ if (is_uv_system())
+ for_each_online_cpu(cpu)
+ uv_heartbeat_enable(cpu);
+ return 0;
+}
+
+late_initcall(uv_init_heartbeat);
+
+#endif /* !CONFIG_HOTPLUG_CPU */
+
/*
* Called on each cpu to initialize the per_cpu UV data area.
* ZZZ hotplug not supported yet
uv_bios_init();
uv_bios_get_sn_info(0, &uv_type, &sn_partition_id,
- &uv_coherency_id, &uv_region_size);
+ &sn_coherency_id, &sn_region_size);
uv_rtc_init();
for_each_present_cpu(cpu) {
uv_blade_info[blade].nr_possible_cpus++;
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)->lowmem_remap_top = lowmem_redir_size;
uv_cpu_hub_info(cpu)->m_val = m_val;
uv_cpu_hub_info(cpu)->n_val = m_val;
uv_cpu_hub_info(cpu)->numa_blade_id = blade;
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 = uv_coherency_id;
+ uv_cpu_hub_info(cpu)->coherency_domain_number = sn_coherency_id;
+ uv_cpu_hub_info(cpu)->scir.offset = SCIR_LOCAL_MMR_BASE + lcpu;
uv_node_to_blade[nid] = blade;
uv_cpu_to_blade[cpu] = blade;
max_pnode = max(pnode, max_pnode);
map_mmioh_high(max_pnode);
uv_cpu_init();
+ uv_scir_register_cpu_notifier();
+ proc_mkdir("sgi_uv", NULL);
}
projects / ~andy / linux / blobdiff