static void eznps_init_per_cpu(int cpu)
{
smp_ipi_irq_setup(cpu, NPS_IPI_IRQ);
eznps_init_core(cpu);
mtm_enable_core(cpu);
}
/*
* Any SMP specific init any CPU does when it comes up.
* Here we setup the CPU to enable Inter-Processor-Interrupts
* Called for each CPU
* -Master : init_IRQ()
* -Other(s) : start_kernel_secondary()
*/
void eznps_smp_init_cpu(unsigned int cpu)
{
unsigned int rc;
rc = smp_ipi_irq_setup(cpu, IPI_IRQ);
if (rc)
panic("IPI IRQ %d reg failed on BOOT cpu\n", IPI_IRQ);
eznps_init_core(cpu);
mtm_enable_core(cpu);
}
/*
* Any SMP specific init any CPU does when it comes up.
* Here we setup the CPU to enable Inter-Processor-Interrupts
* Called for each CPU
* -Master : init_IRQ()
* -Other(s) : start_kernel_secondary()
*/
void iss_model_init_smp(unsigned int cpu)
{
/* Check if CPU is configured for more than 16 interrupts */
if (NR_IRQS <= 16 || get_hw_config_num_irq() <= 16)
panic("[arcfpga] IRQ system can't support IDU IPI\n");
idu_disable();
/****************************************************************
* IDU provides a set of Common IRQs, each of which can be dynamically
* attached to (1|many|all) CPUs.
* The Common IRQs [0-15] are mapped as CPU pvt [16-31]
*
* Here we use a simple 1:1 mapping:
* A CPU 'x' is wired to Common IRQ 'x'.
* So an IDU ASSERT on IRQ 'x' will trigger Interupt on CPU 'x', which
* makes up for our simple IPI plumbing.
*
* TBD: Have a dedicated multicast IRQ for sending IPIs to all CPUs
* w/o having to do one-at-a-time
******************************************************************/
/*
* Claim an IRQ which would trigger IPI on this CPU.
* In IDU parlance it involves setting up a cpu bitmask for the IRQ
* The bitmap here contains only 1 CPU (self).
*/
idu_irq_set_tgtcpu(cpu, 0x1 << cpu);
/* Set the IRQ destination to use the bitmask above */
idu_irq_set_mode(cpu, 7, /* XXX: IDU_IRQ_MOD_TCPU_ALLRECP: ISS bug */
IDU_IRQ_MODE_PULSE_TRIG);
idu_enable();
/* Attach the arch-common IPI ISR to our IDU IRQ */
smp_ipi_irq_setup(cpu, IDU_INTERRUPT_0 + cpu);
}
static void mcip_setup_per_cpu(int cpu)
{
smp_ipi_irq_setup(cpu, IPI_IRQ);
smp_ipi_irq_setup(cpu, SOFTIRQ_IRQ);
}
/*
* Any SMP specific init any CPU does when it comes up.
* Here we setup the CPU to enable Inter-Processor-Interrupts
* Called for each CPU
* -Master : init_IRQ()
* -Other(s) : start_kernel_secondary()
*/
void mcip_init_smp(unsigned int cpu)
{
smp_ipi_irq_setup(cpu, IPI_IRQ);
}
