diff options
| author | Paul Burton <paul.burton@imgtec.com> | 2014-03-24 10:19:32 +0000 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2014-03-31 18:17:12 +0200 |
| commit | 45b29578040e42c88d27ab46510fa822ce14767e (patch) | |
| tree | 8c05e47ca6a15ac7f8b352134b80820f17e63ed0 /arch/mips/mti-malta/malta-int.c | |
| parent | 0c2cb004b262987f7ab84d0c40b7bff74ed5d17b (diff) | |
| download | lwn-45b29578040e42c88d27ab46510fa822ce14767e.tar.gz lwn-45b29578040e42c88d27ab46510fa822ce14767e.zip | |
MIPS: Malta: GIC IPIs may be used without MT
It's perfectly valid to use SMP on a non-MT CPU and use the GIC for
IPIs. Set them up conditional upon CONFIG_MIPS_GIC_IPI rather than
CONFIG_MIPS_MT_SMP.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: Paul Burton <paul.burton@imgtec.com>
Patchwork: https://patchwork.linux-mips.org/patch/6654/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/mti-malta/malta-int.c')
| -rw-r--r-- | arch/mips/mti-malta/malta-int.c | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/arch/mips/mti-malta/malta-int.c b/arch/mips/mti-malta/malta-int.c index 93103f81bf57..c6cbfebcac9b 100644 --- a/arch/mips/mti-malta/malta-int.c +++ b/arch/mips/mti-malta/malta-int.c @@ -286,10 +286,6 @@ asmlinkage void plat_irq_dispatch(void) #ifdef CONFIG_MIPS_MT_SMP - -#define GIC_MIPS_CPU_IPI_RESCHED_IRQ 3 -#define GIC_MIPS_CPU_IPI_CALL_IRQ 4 - #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 */ @@ -306,6 +302,13 @@ static void ipi_call_dispatch(void) do_IRQ(MIPS_CPU_IRQ_BASE + MIPS_CPU_IPI_CALL_IRQ); } +#endif /* CONFIG_MIPS_MT_SMP */ + +#ifdef CONFIG_MIPS_GIC_IPI + +#define GIC_MIPS_CPU_IPI_RESCHED_IRQ 3 +#define GIC_MIPS_CPU_IPI_CALL_IRQ 4 + static irqreturn_t ipi_resched_interrupt(int irq, void *dev_id) { #ifdef MIPS_VPE_APSP_API @@ -336,7 +339,7 @@ static struct irqaction irq_call = { .flags = IRQF_PERCPU, .name = "IPI_call" }; -#endif /* CONFIG_MIPS_MT_SMP */ +#endif /* CONFIG_MIPS_GIC_IPI */ static int gic_resched_int_base; static int gic_call_int_base; @@ -416,7 +419,7 @@ static struct gic_intr_map gic_intr_map[GIC_NUM_INTRS] = { }; #undef X -#if defined(CONFIG_MIPS_MT_SMP) +#ifdef CONFIG_MIPS_GIC_IPI static void __init fill_ipi_map1(int baseintr, int cpu, int cpupin) { int intr = baseintr + cpu; @@ -532,7 +535,7 @@ void __init arch_init_irq(void) if (gic_present) { /* FIXME */ int i; -#if defined(CONFIG_MIPS_MT_SMP) +#if defined(CONFIG_MIPS_GIC_IPI) gic_call_int_base = GIC_NUM_INTRS - (NR_CPUS - nr_cpu_ids) * 2 - nr_cpu_ids; gic_resched_int_base = gic_call_int_base - nr_cpu_ids; @@ -547,7 +550,7 @@ void __init arch_init_irq(void) (i | (0x1 << MSC01_SC_CFG_GICENA_SHF)); pr_debug("GIC Enabled\n"); } -#if defined(CONFIG_MIPS_MT_SMP) +#if defined(CONFIG_MIPS_GIC_IPI) /* set up ipi interrupts */ if (cpu_has_vint) { set_vi_handler(MIPSCPU_INT_IPI0, malta_ipi_irqdispatch); |