diff options
Diffstat (limited to 'arch/mn10300/kernel/smp.c')
| -rw-r--r-- | arch/mn10300/kernel/smp.c | 68 |
1 files changed, 49 insertions, 19 deletions
diff --git a/arch/mn10300/kernel/smp.c b/arch/mn10300/kernel/smp.c index 0dcd1c686ba8..226c826a2194 100644 --- a/arch/mn10300/kernel/smp.c +++ b/arch/mn10300/kernel/smp.c @@ -113,15 +113,17 @@ static void init_ipi(void); */ static void mn10300_ipi_disable(unsigned int irq); static void mn10300_ipi_enable(unsigned int irq); -static void mn10300_ipi_ack(unsigned int irq); -static void mn10300_ipi_nop(unsigned int irq); +static void mn10300_ipi_chip_disable(struct irq_data *d); +static void mn10300_ipi_chip_enable(struct irq_data *d); +static void mn10300_ipi_ack(struct irq_data *d); +static void mn10300_ipi_nop(struct irq_data *d); static struct irq_chip mn10300_ipi_type = { .name = "cpu_ipi", - .disable = mn10300_ipi_disable, - .enable = mn10300_ipi_enable, - .ack = mn10300_ipi_ack, - .eoi = mn10300_ipi_nop + .irq_disable = mn10300_ipi_chip_disable, + .irq_enable = mn10300_ipi_chip_enable, + .irq_ack = mn10300_ipi_ack, + .irq_eoi = mn10300_ipi_nop }; static irqreturn_t smp_reschedule_interrupt(int irq, void *dev_id); @@ -154,15 +156,15 @@ static void init_ipi(void) u16 tmp16; /* set up the reschedule IPI */ - set_irq_chip_and_handler(RESCHEDULE_IPI, - &mn10300_ipi_type, handle_percpu_irq); + irq_set_chip_and_handler(RESCHEDULE_IPI, &mn10300_ipi_type, + handle_percpu_irq); setup_irq(RESCHEDULE_IPI, &reschedule_ipi); set_intr_level(RESCHEDULE_IPI, RESCHEDULE_GxICR_LV); mn10300_ipi_enable(RESCHEDULE_IPI); /* set up the call function IPI */ - set_irq_chip_and_handler(CALL_FUNC_SINGLE_IPI, - &mn10300_ipi_type, handle_percpu_irq); + irq_set_chip_and_handler(CALL_FUNC_SINGLE_IPI, &mn10300_ipi_type, + handle_percpu_irq); setup_irq(CALL_FUNC_SINGLE_IPI, &call_function_ipi); set_intr_level(CALL_FUNC_SINGLE_IPI, CALL_FUNCTION_GxICR_LV); mn10300_ipi_enable(CALL_FUNC_SINGLE_IPI); @@ -170,8 +172,8 @@ static void init_ipi(void) /* set up the local timer IPI */ #if !defined(CONFIG_GENERIC_CLOCKEVENTS) || \ defined(CONFIG_GENERIC_CLOCKEVENTS_BROADCAST) - set_irq_chip_and_handler(LOCAL_TIMER_IPI, - &mn10300_ipi_type, handle_percpu_irq); + irq_set_chip_and_handler(LOCAL_TIMER_IPI, &mn10300_ipi_type, + handle_percpu_irq); setup_irq(LOCAL_TIMER_IPI, &local_timer_ipi); set_intr_level(LOCAL_TIMER_IPI, LOCAL_TIMER_GxICR_LV); mn10300_ipi_enable(LOCAL_TIMER_IPI); @@ -236,6 +238,11 @@ static void mn10300_ipi_enable(unsigned int irq) arch_local_irq_restore(flags); } +static void mn10300_ipi_chip_enable(struct irq_data *d) +{ + mn10300_ipi_enable(d->irq); +} + /** * mn10300_ipi_disable - Disable an IPI * @irq: The IPI to be disabled. @@ -254,6 +261,12 @@ static void mn10300_ipi_disable(unsigned int irq) arch_local_irq_restore(flags); } +static void mn10300_ipi_chip_disable(struct irq_data *d) +{ + mn10300_ipi_disable(d->irq); +} + + /** * mn10300_ipi_ack - Acknowledge an IPI interrupt in the PIC * @irq: The IPI to be acknowledged. @@ -261,8 +274,9 @@ static void mn10300_ipi_disable(unsigned int irq) * Clear the interrupt detection flag for the IPI on the appropriate interrupt * channel in the PIC. */ -static void mn10300_ipi_ack(unsigned int irq) +static void mn10300_ipi_ack(struct irq_data *d) { + unsigned int irq = d->irq; unsigned long flags; u16 tmp; @@ -276,7 +290,7 @@ static void mn10300_ipi_ack(unsigned int irq) * mn10300_ipi_nop - Dummy IPI action * @irq: The IPI to be acted upon. */ -static void mn10300_ipi_nop(unsigned int irq) +static void mn10300_ipi_nop(struct irq_data *d) { } @@ -426,6 +440,22 @@ int smp_nmi_call_function(smp_call_func_t func, void *info, int wait) } /** + * smp_jump_to_debugger - Make other CPUs enter the debugger by sending an IPI + * + * Send a non-maskable request to all other CPUs in the system, instructing + * them to jump into the debugger. The caller is responsible for checking that + * the other CPUs responded to the instruction. + * + * The caller should make sure that this CPU's debugger IPI is disabled. + */ +void smp_jump_to_debugger(void) +{ + if (num_online_cpus() > 1) + /* Send a message to all other CPUs */ + send_IPI_allbutself(DEBUGGER_NMI_IPI); +} + +/** * stop_this_cpu - Callback to stop a CPU. * @unused: Callback context (ignored). */ @@ -589,7 +619,7 @@ static void __init smp_cpu_init(void) /** * smp_prepare_cpu_init - Initialise CPU in startup_secondary * - * Set interrupt level 0-6 setting and init ICR of gdbstub. + * Set interrupt level 0-6 setting and init ICR of the kernel debugger. */ void smp_prepare_cpu_init(void) { @@ -608,15 +638,15 @@ void smp_prepare_cpu_init(void) for (loop = 0; loop < GxICR_NUM_IRQS; loop++) GxICR(loop) = GxICR_LEVEL_6 | GxICR_DETECT; -#ifdef CONFIG_GDBSTUB - /* initialise GDB-stub */ +#ifdef CONFIG_KERNEL_DEBUGGER + /* initialise the kernel debugger interrupt */ do { unsigned long flags; u16 tmp16; flags = arch_local_cli_save(); - GxICR(GDB_NMI_IPI) = GxICR_NMI | GxICR_ENABLE | GxICR_DETECT; - tmp16 = GxICR(GDB_NMI_IPI); + GxICR(DEBUGGER_NMI_IPI) = GxICR_NMI | GxICR_ENABLE | GxICR_DETECT; + tmp16 = GxICR(DEBUGGER_NMI_IPI); arch_local_irq_restore(flags); } while (0); #endif |