diff options
| author | Paul Burton <paul.burton@imgtec.com> | 2017-03-30 22:06:12 +0300 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2017-04-13 00:13:13 +0300 |
| commit | 1eed40043579608e16509c43eeeb3a53a8a42378 (patch) | |
| tree | e52aeb25049d008647b3144ab33b144475b80f42 /arch/mips/lantiq | |
| parent | 3838a547fda22a37faab5770d01acd72aaeabbf6 (diff) | |
| download | linux-1eed40043579608e16509c43eeeb3a53a8a42378.tar.xz | |
MIPS: smp-mt: Use CPU interrupt controller IPI IRQ domain support
Remove the smp-mt IPI code that supported single-core multithreaded
systems and instead make use of the IPI IRQ domain support provided by
the MIPS CPU interrupt controller driver. This removes some less than
nice code, the horrible split between arch & board code and the
duplication that led to within board code.
The lantiq portion of this patch has only been compile tested. Malta has
been tested & is functional.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/15837/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/lantiq')
| -rw-r--r-- | arch/mips/lantiq/irq.c | 52 |
1 files changed, 0 insertions, 52 deletions
diff --git a/arch/mips/lantiq/irq.c b/arch/mips/lantiq/irq.c index 0ddf3698b85d..33728b7af426 100644 --- a/arch/mips/lantiq/irq.c +++ b/arch/mips/lantiq/irq.c @@ -274,47 +274,6 @@ static void ltq_hw_irq_handler(struct irq_desc *desc) ltq_hw_irqdispatch(irq_desc_get_irq(desc) - 2); } -#ifdef CONFIG_MIPS_MT_SMP -void __init arch_init_ipiirq(int irq, struct irqaction *action) -{ - setup_irq(irq, action); - irq_set_handler(irq, handle_percpu_irq); -} - -static void ltq_sw0_irqdispatch(void) -{ - do_IRQ(MIPS_CPU_IRQ_BASE + MIPS_CPU_IPI_RESCHED_IRQ); -} - -static void ltq_sw1_irqdispatch(void) -{ - do_IRQ(MIPS_CPU_IRQ_BASE + MIPS_CPU_IPI_CALL_IRQ); -} -static irqreturn_t ipi_resched_interrupt(int irq, void *dev_id) -{ - scheduler_ipi(); - return IRQ_HANDLED; -} - -static irqreturn_t ipi_call_interrupt(int irq, void *dev_id) -{ - generic_smp_call_function_interrupt(); - return IRQ_HANDLED; -} - -static struct irqaction irq_resched = { - .handler = ipi_resched_interrupt, - .flags = IRQF_PERCPU, - .name = "IPI_resched" -}; - -static struct irqaction irq_call = { - .handler = ipi_call_interrupt, - .flags = IRQF_PERCPU, - .name = "IPI_call" -}; -#endif - asmlinkage void plat_irq_dispatch(void) { unsigned int pending = read_c0_status() & read_c0_cause() & ST0_IM; @@ -402,17 +361,6 @@ int __init icu_of_init(struct device_node *node, struct device_node *parent) (MAX_IM * INT_NUM_IM_OFFSET) + MIPS_CPU_IRQ_CASCADE, &irq_domain_ops, 0); -#if defined(CONFIG_MIPS_MT_SMP) - if (cpu_has_vint) { - pr_info("Setting up IPI vectored interrupts\n"); - set_vi_handler(MIPS_CPU_IPI_RESCHED_IRQ, ltq_sw0_irqdispatch); - set_vi_handler(MIPS_CPU_IPI_CALL_IRQ, ltq_sw1_irqdispatch); - } - arch_init_ipiirq(MIPS_CPU_IRQ_BASE + MIPS_CPU_IPI_RESCHED_IRQ, - &irq_resched); - arch_init_ipiirq(MIPS_CPU_IRQ_BASE + MIPS_CPU_IPI_CALL_IRQ, &irq_call); -#endif - #ifndef CONFIG_MIPS_MT_SMP set_c0_status(IE_IRQ0 | IE_IRQ1 | IE_IRQ2 | IE_IRQ3 | IE_IRQ4 | IE_IRQ5); |