void iSeries_smp_message_recv(struct pt_regs *regs)
{
int cpu = smp_processor_id();
int msg;
if (num_online_cpus() < 2)
return;
for (msg = 0; msg < 4; msg++)
if (test_and_clear_bit(msg, &iSeries_smp_message[cpu]))
smp_message_recv(msg, regs);
}
void xics_ipi_action(int irq, void *dev_id, struct pt_regs *regs)
{
extern volatile unsigned long xics_ipi_message[];
int cpu = smp_processor_id();
ops->qirr_info(cpu, 0xff);
while (xics_ipi_message[cpu]) {
if (test_and_clear_bit(PPC_MSG_CALL_FUNCTION, &xics_ipi_message[cpu])) {
mb();
smp_message_recv(PPC_MSG_CALL_FUNCTION, regs);
}
if (test_and_clear_bit(PPC_MSG_RESCHEDULE, &xics_ipi_message[cpu])) {
mb();
smp_message_recv(PPC_MSG_RESCHEDULE, regs);
}
#ifdef CONFIG_XMON
if (test_and_clear_bit(PPC_MSG_XMON_BREAK, &xics_ipi_message[cpu])) {
mb();
smp_message_recv(PPC_MSG_XMON_BREAK, regs);
}
#endif
}
}
static irqreturn_t ipi_interrupt_handler(int irq, void *arg)
{
unsigned int message = (unsigned int)(long)arg;
unsigned int cpu = hard_smp_processor_id();
unsigned int offs = 4 * cpu;
unsigned int x;
x = __raw_readl(0xfe410070 + offs); /* C0INITICI..CnINTICI */
x &= (1 << (message << 2));
__raw_writel(x, 0xfe410080 + offs); /* C0INTICICLR..CnINTICICLR */
smp_message_recv(message);
return IRQ_HANDLED;
}
static irqreturn_t j2_ipi_interrupt_handler(int irq, void *arg)
{
unsigned cpu = hard_smp_processor_id();
volatile unsigned *pmsg = &per_cpu(j2_ipi_messages, cpu);
unsigned messages, i;
do messages = *pmsg;
while (cmpxchg(pmsg, messages, 0) != messages);
if (!messages) return IRQ_NONE;
for (i=0; i<SMP_MSG_NR; i++)
if (messages & (1U<<i))
smp_message_recv(i);
return IRQ_HANDLED;
}
static irqreturn_t debug_ipi_action(int irq, void *data)
{
smp_message_recv(PPC_MSG_DEBUGGER_BREAK);
return IRQ_HANDLED;
}
void xics_ipi_action(int irq, void *dev_id, struct pt_regs *regs)
{
qirr_info(smp_processor_id()) = 0xff;
smp_message_recv(MSG_RESCHEDULE, regs);
}
static irqreturn_t xen_ppc_msg_debugger_break(int irq, void *dev_id,
struct pt_regs *regs)
{
smp_message_recv(PPC_MSG_DEBUGGER_BREAK, regs);
return IRQ_HANDLED;
}
static irqreturn_t xen_ppc_msg_call_function(int irq, void *dev_id,
struct pt_regs *regs)
{
smp_message_recv(PPC_MSG_CALL_FUNCTION, regs);
return IRQ_HANDLED;
}
static irqreturn_t xen_ppc_msg_reschedule(int irq, void *dev_id,
struct pt_regs *regs)
{
smp_message_recv(PPC_MSG_RESCHEDULE, regs);
return IRQ_HANDLED;
}