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authorPaul Burton <paul.burton@imgtec.com>2017-03-30 22:06:12 +0300
committerRalf Baechle <ralf@linux-mips.org>2017-04-13 00:13:13 +0300
commit1eed40043579608e16509c43eeeb3a53a8a42378 (patch)
treee52aeb25049d008647b3144ab33b144475b80f42 /arch/mips/mti-malta
parent3838a547fda22a37faab5770d01acd72aaeabbf6 (diff)
downloadlinux-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/mti-malta')
-rw-r--r--arch/mips/mti-malta/malta-int.c83
1 files changed, 4 insertions, 79 deletions
diff --git a/arch/mips/mti-malta/malta-int.c b/arch/mips/mti-malta/malta-int.c
index cb675ec6f283..fe9bb479f2a0 100644
--- a/arch/mips/mti-malta/malta-int.c
+++ b/arch/mips/mti-malta/malta-int.c
@@ -145,56 +145,6 @@ static irqreturn_t corehi_handler(int irq, void *dev_id)
return IRQ_HANDLED;
}
-#ifdef CONFIG_MIPS_MT_SMP
-
-#define MIPS_CPU_IPI_RESCHED_IRQ 0 /* SW int 0 for resched */
-#define C_RESCHED C_SW0
-#define MIPS_CPU_IPI_CALL_IRQ 1 /* SW int 1 for resched */
-#define C_CALL C_SW1
-static int cpu_ipi_resched_irq, cpu_ipi_call_irq;
-
-static void ipi_resched_dispatch(void)
-{
- do_IRQ(MIPS_CPU_IRQ_BASE + MIPS_CPU_IPI_RESCHED_IRQ);
-}
-
-static void ipi_call_dispatch(void)
-{
- do_IRQ(MIPS_CPU_IRQ_BASE + MIPS_CPU_IPI_CALL_IRQ);
-}
-
-static irqreturn_t ipi_resched_interrupt(int irq, void *dev_id)
-{
-#ifdef CONFIG_MIPS_VPE_APSP_API_CMP
- if (aprp_hook)
- aprp_hook();
-#endif
-
- 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 /* CONFIG_MIPS_MT_SMP */
-
static struct irqaction corehi_irqaction = {
.handler = corehi_handler,
.name = "CoreHi",
@@ -222,12 +172,6 @@ static msc_irqmap_t msc_eicirqmap[] __initdata = {
static int msc_nr_eicirqs __initdata = ARRAY_SIZE(msc_eicirqmap);
-void __init arch_init_ipiirq(int irq, struct irqaction *action)
-{
- setup_irq(irq, action);
- irq_set_handler(irq, handle_percpu_irq);
-}
-
void __init arch_init_irq(void)
{
int corehi_irq;
@@ -262,30 +206,11 @@ void __init arch_init_irq(void)
if (gic_present) {
corehi_irq = MIPS_CPU_IRQ_BASE + MIPSCPU_INT_COREHI;
+ } else if (cpu_has_veic) {
+ set_vi_handler(MSC01E_INT_COREHI, corehi_irqdispatch);
+ corehi_irq = MSC01E_INT_BASE + MSC01E_INT_COREHI;
} else {
-#if defined(CONFIG_MIPS_MT_SMP)
- /* set up ipi interrupts */
- if (cpu_has_veic) {
- set_vi_handler (MSC01E_INT_SW0, ipi_resched_dispatch);
- set_vi_handler (MSC01E_INT_SW1, ipi_call_dispatch);
- cpu_ipi_resched_irq = MSC01E_INT_SW0;
- cpu_ipi_call_irq = MSC01E_INT_SW1;
- } else {
- cpu_ipi_resched_irq = MIPS_CPU_IRQ_BASE +
- MIPS_CPU_IPI_RESCHED_IRQ;
- cpu_ipi_call_irq = MIPS_CPU_IRQ_BASE +
- MIPS_CPU_IPI_CALL_IRQ;
- }
- arch_init_ipiirq(cpu_ipi_resched_irq, &irq_resched);
- arch_init_ipiirq(cpu_ipi_call_irq, &irq_call);
-#endif
- if (cpu_has_veic) {
- set_vi_handler(MSC01E_INT_COREHI,
- corehi_irqdispatch);
- corehi_irq = MSC01E_INT_BASE + MSC01E_INT_COREHI;
- } else {
- corehi_irq = MIPS_CPU_IRQ_BASE + MIPSCPU_INT_COREHI;
- }
+ corehi_irq = MIPS_CPU_IRQ_BASE + MIPSCPU_INT_COREHI;
}
setup_irq(corehi_irq, &corehi_irqaction);