diff options
Diffstat (limited to 'arch/mips/cavium-octeon/smp.c')
| -rw-r--r-- | arch/mips/cavium-octeon/smp.c | 44 |
1 files changed, 26 insertions, 18 deletions
diff --git a/arch/mips/cavium-octeon/smp.c b/arch/mips/cavium-octeon/smp.c index 3de786545ded..054e331b3202 100644 --- a/arch/mips/cavium-octeon/smp.c +++ b/arch/mips/cavium-octeon/smp.c @@ -15,10 +15,12 @@ #include <linux/sched/task_stack.h> #include <linux/init.h> #include <linux/export.h> +#include <linux/kexec.h> #include <asm/mmu_context.h> #include <asm/time.h> #include <asm/setup.h> +#include <asm/smp.h> #include <asm/octeon/octeon.h> @@ -90,7 +92,7 @@ static irqreturn_t mailbox_interrupt(int irq, void *dev_id) return IRQ_HANDLED; } -/** +/* * Cause the function described by call_data to be executed on the passed * cpu. When the function has finished, increment the finished field of * call_data. @@ -114,7 +116,7 @@ static inline void octeon_send_ipi_mask(const struct cpumask *mask, octeon_send_ipi_single(i, action); } -/** +/* * Detect available CPUs, populate cpu_possible_mask */ static void octeon_smp_hotplug_setup(void) @@ -201,11 +203,10 @@ int plat_post_relocation(long offset) } #endif /* CONFIG_RELOCATABLE */ -/** +/* * Firmware CPU startup hook - * */ -static void octeon_boot_secondary(int cpu, struct task_struct *idle) +static int octeon_boot_secondary(int cpu, struct task_struct *idle) { int count; @@ -223,11 +224,15 @@ static void octeon_boot_secondary(int cpu, struct task_struct *idle) udelay(1); count--; } - if (count == 0) + if (count == 0) { pr_err("Secondary boot timeout\n"); + return -ETIMEDOUT; + } + + return 0; } -/** +/* * After we've done initial boot, this function is called to allow the * board code to clean up state, if needed */ @@ -245,9 +250,8 @@ static void octeon_init_secondary(void) octeon_irq_setup_secondary(); } -/** +/* * Callout to firmware before smp_init - * */ static void __init octeon_prepare_cpus(unsigned int max_cpus) { @@ -263,7 +267,7 @@ static void __init octeon_prepare_cpus(unsigned int max_cpus) } } -/** +/* * Last chance for the board code to finish SMP initialization before * the CPU is "online". */ @@ -279,15 +283,12 @@ static void octeon_smp_finish(void) #ifdef CONFIG_HOTPLUG_CPU /* State of each CPU. */ -DEFINE_PER_CPU(int, cpu_state); +static DEFINE_PER_CPU(int, cpu_state); static int octeon_cpu_disable(void) { unsigned int cpu = smp_processor_id(); - if (cpu == 0) - return -EBUSY; - if (!octeon_bootloader_entry_addr) return -ENOTSUPP; @@ -333,7 +334,7 @@ static void octeon_cpu_die(unsigned int cpu) new_mask = *p; } - pr_info("Reset core %d. Available Coremask = 0x%x \n", coreid, new_mask); + pr_info("Reset core %d. Available Coremask = 0x%x\n", coreid, new_mask); mb(); cvmx_write_csr(CVMX_CIU_PP_RST, 1 << coreid); cvmx_write_csr(CVMX_CIU_PP_RST, 0); @@ -344,6 +345,7 @@ void play_dead(void) int cpu = cpu_number_map(cvmx_get_core_num()); idle_task_exit(); + cpuhp_ap_report_dead(); octeon_processor_boot = 0xff; per_cpu(cpu_state, cpu) = CPU_DEAD; @@ -408,7 +410,7 @@ late_initcall(register_cavium_notifier); #endif /* CONFIG_HOTPLUG_CPU */ -struct plat_smp_ops octeon_smp_ops = { +static const struct plat_smp_ops octeon_smp_ops = { .send_ipi_single = octeon_send_ipi_single, .send_ipi_mask = octeon_send_ipi_mask, .init_secondary = octeon_init_secondary, @@ -420,6 +422,9 @@ struct plat_smp_ops octeon_smp_ops = { .cpu_disable = octeon_cpu_disable, .cpu_die = octeon_cpu_die, #endif +#ifdef CONFIG_KEXEC_CORE + .kexec_nonboot_cpu = kexec_nonboot_cpu_jump, +#endif }; static irqreturn_t octeon_78xx_reched_interrupt(int irq, void *dev_id) @@ -485,7 +490,7 @@ static void octeon_78xx_send_ipi_mask(const struct cpumask *mask, octeon_78xx_send_ipi_single(cpu, action); } -static struct plat_smp_ops octeon_78xx_smp_ops = { +static const struct plat_smp_ops octeon_78xx_smp_ops = { .send_ipi_single = octeon_78xx_send_ipi_single, .send_ipi_mask = octeon_78xx_send_ipi_mask, .init_secondary = octeon_init_secondary, @@ -497,11 +502,14 @@ static struct plat_smp_ops octeon_78xx_smp_ops = { .cpu_disable = octeon_cpu_disable, .cpu_die = octeon_cpu_die, #endif +#ifdef CONFIG_KEXEC_CORE + .kexec_nonboot_cpu = kexec_nonboot_cpu_jump, +#endif }; void __init octeon_setup_smp(void) { - struct plat_smp_ops *ops; + const struct plat_smp_ops *ops; if (octeon_has_feature(OCTEON_FEATURE_CIU3)) ops = &octeon_78xx_smp_ops; |