powerpc/pmac/smp: Consolidate 32-bit and 64-bit PowerMac cpu_die in one file
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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@ -33,7 +33,6 @@ extern void pmac_setup_pci_dma(void);
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extern void pmac_check_ht_link(void);
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extern void pmac_setup_smp(void);
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extern void pmac32_cpu_die(void);
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extern void low_cpu_die(void) __attribute__((noreturn));
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extern int pmac_nvram_init(void);
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@ -650,51 +650,6 @@ static int pmac_pci_probe_mode(struct pci_bus *bus)
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return PCI_PROBE_NORMAL;
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return PCI_PROBE_DEVTREE;
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}
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#ifdef CONFIG_HOTPLUG_CPU
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/* access per cpu vars from generic smp.c */
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DECLARE_PER_CPU(int, cpu_state);
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static void pmac64_cpu_die(void)
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{
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/*
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* turn off as much as possible, we'll be
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* kicked out as this will only be invoked
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* on core99 platforms for now ...
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*/
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printk(KERN_INFO "CPU#%d offline\n", smp_processor_id());
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__get_cpu_var(cpu_state) = CPU_DEAD;
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smp_wmb();
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/*
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* during the path that leads here preemption is disabled,
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* reenable it now so that when coming up preempt count is
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* zero correctly
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*/
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preempt_enable();
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/*
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* hard-disable interrupts for the non-NAP case, the NAP code
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* needs to re-enable interrupts (but soft-disables them)
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*/
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hard_irq_disable();
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while (1) {
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/* let's not take timer interrupts too often ... */
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set_dec(0x7fffffff);
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/* should always be true at this point */
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if (cpu_has_feature(CPU_FTR_CAN_NAP))
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power4_cpu_offline_powersave();
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else {
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HMT_low();
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HMT_very_low();
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}
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}
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}
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#endif /* CONFIG_HOTPLUG_CPU */
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#endif /* CONFIG_PPC64 */
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define_machine(powermac) {
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@ -726,15 +681,4 @@ define_machine(powermac) {
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.pcibios_after_init = pmac_pcibios_after_init,
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.phys_mem_access_prot = pci_phys_mem_access_prot,
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#endif
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#ifdef CONFIG_HOTPLUG_CPU
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#ifdef CONFIG_PPC64
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.cpu_die = pmac64_cpu_die,
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#endif
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#ifdef CONFIG_PPC32
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.cpu_die = pmac32_cpu_die,
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#endif
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#endif
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#if defined(CONFIG_HOTPLUG_CPU) && defined(CONFIG_PPC32)
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.cpu_die = generic_mach_cpu_die,
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#endif
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};
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@ -865,7 +865,7 @@ static void __devinit smp_core99_setup_cpu(int cpu_nr)
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}
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#if defined(CONFIG_HOTPLUG_CPU) && defined(CONFIG_PPC32)
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#ifdef CONFIG_HOTPLUG_CPU
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static int smp_core99_cpu_disable(void)
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{
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@ -878,7 +878,9 @@ static int smp_core99_cpu_disable(void)
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return 0;
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}
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void pmac32_cpu_die(void)
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#ifdef CONFIG_PPC32
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static void pmac_cpu_die(void)
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{
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local_irq_disable();
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idle_task_exit();
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@ -889,7 +891,52 @@ void pmac32_cpu_die(void)
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low_cpu_die();
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}
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#endif /* CONFIG_HOTPLUG_CPU && CONFIG_PP32 */
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#else /* CONFIG_PPC32 */
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static void pmac_cpu_die(void)
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{
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local_irq_disable();
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idle_task_exit();
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/*
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* turn off as much as possible, we'll be
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* kicked out as this will only be invoked
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* on core99 platforms for now ...
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*/
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printk(KERN_INFO "CPU#%d offline\n", smp_processor_id());
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__get_cpu_var(cpu_state) = CPU_DEAD;
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smp_wmb();
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/*
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* during the path that leads here preemption is disabled,
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* reenable it now so that when coming up preempt count is
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* zero correctly
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*/
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preempt_enable();
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/*
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* hard-disable interrupts for the non-NAP case, the NAP code
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* needs to re-enable interrupts (but soft-disables them)
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*/
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hard_irq_disable();
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while (1) {
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/* let's not take timer interrupts too often ... */
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set_dec(0x7fffffff);
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/* should always be true at this point */
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if (cpu_has_feature(CPU_FTR_CAN_NAP))
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power4_cpu_offline_powersave();
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else {
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HMT_low();
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HMT_very_low();
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}
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}
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}
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#endif /* else CONFIG_PPC32 */
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#endif /* CONFIG_HOTPLUG_CPU */
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/* Core99 Macs (dual G4s and G5s) */
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struct smp_ops_t core99_smp_ops = {
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@ -933,5 +980,10 @@ void __init pmac_setup_smp(void)
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smp_ops = &psurge_smp_ops;
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}
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#endif /* CONFIG_PPC32 */
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#ifdef CONFIG_HOTPLUG_CPU
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ppc_md.cpu_die = pmac_cpu_die;
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#endif
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}
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