diff options
Diffstat (limited to 'arch/mips/mti-malta/malta-int.c')
| -rw-r--r-- | arch/mips/mti-malta/malta-int.c | 111 |
1 files changed, 5 insertions, 106 deletions
diff --git a/arch/mips/mti-malta/malta-int.c b/arch/mips/mti-malta/malta-int.c index c6a6c7afddab..cb675ec6f283 100644 --- a/arch/mips/mti-malta/malta-int.c +++ b/arch/mips/mti-malta/malta-int.c @@ -14,11 +14,13 @@ */ #include <linux/init.h> #include <linux/irq.h> +#include <linux/irqchip.h> #include <linux/sched.h> #include <linux/smp.h> #include <linux/interrupt.h> #include <linux/io.h> #include <linux/irqchip/mips-gic.h> +#include <linux/of_irq.h> #include <linux/kernel_stat.h> #include <linux/kernel.h> #include <linux/random.h> @@ -37,10 +39,6 @@ #include <asm/setup.h> #include <asm/rtlx.h> -static void __iomem *_msc01_biu_base; - -static DEFINE_RAW_SPINLOCK(mips_irq_lock); - static inline int mips_pcibios_iack(void) { int irq; @@ -85,49 +83,6 @@ static inline int mips_pcibios_iack(void) return irq; } -static inline int get_int(void) -{ - unsigned long flags; - int irq; - raw_spin_lock_irqsave(&mips_irq_lock, flags); - - irq = mips_pcibios_iack(); - - /* - * The only way we can decide if an interrupt is spurious - * is by checking the 8259 registers. This needs a spinlock - * on an SMP system, so leave it up to the generic code... - */ - - raw_spin_unlock_irqrestore(&mips_irq_lock, flags); - - return irq; -} - -static void malta_hw0_irqdispatch(void) -{ - int irq; - - irq = get_int(); - if (irq < 0) { - /* interrupt has already been cleared */ - return; - } - - do_IRQ(MALTA_INT_BASE + irq); - -#ifdef CONFIG_MIPS_VPE_APSP_API_MT - if (aprp_hook) - aprp_hook(); -#endif -} - -static irqreturn_t i8259_handler(int irq, void *dev_id) -{ - malta_hw0_irqdispatch(); - return IRQ_HANDLED; -} - static void corehi_irqdispatch(void) { unsigned int intedge, intsteer, pcicmd, pcibadaddr; @@ -240,12 +195,6 @@ static struct irqaction irq_call = { }; #endif /* CONFIG_MIPS_MT_SMP */ -static struct irqaction i8259irq = { - .handler = i8259_handler, - .name = "XT-PIC cascade", - .flags = IRQF_NO_THREAD, -}; - static struct irqaction corehi_irqaction = { .handler = corehi_handler, .name = "CoreHi", @@ -281,28 +230,10 @@ void __init arch_init_ipiirq(int irq, struct irqaction *action) void __init arch_init_irq(void) { - int corehi_irq, i8259_irq; - - init_i8259_irqs(); + int corehi_irq; - if (!cpu_has_veic) - mips_cpu_irq_init(); - - if (mips_cm_present()) { - write_gcr_gic_base(GIC_BASE_ADDR | CM_GCR_GIC_BASE_GICEN_MSK); - gic_present = 1; - } else { - if (mips_revision_sconid == MIPS_REVISION_SCON_ROCIT) { - _msc01_biu_base = ioremap_nocache(MSC01_BIU_REG_BASE, - MSC01_BIU_ADDRSPACE_SZ); - gic_present = - (__raw_readl(_msc01_biu_base + MSC01_SC_CFG_OFS) & - MSC01_SC_CFG_GICPRES_MSK) >> - MSC01_SC_CFG_GICPRES_SHF; - } - } - if (gic_present) - pr_debug("GIC present\n"); + i8259_set_poll(mips_pcibios_iack); + irqchip_init(); switch (mips_revision_sconid) { case MIPS_REVISION_SCON_SOCIT: @@ -330,18 +261,6 @@ void __init arch_init_irq(void) } if (gic_present) { - int i; - - gic_init(GIC_BASE_ADDR, GIC_ADDRSPACE_SZ, MIPSCPU_INT_GIC, - MIPS_GIC_IRQ_BASE); - if (!mips_cm_present()) { - /* Enable the GIC */ - i = __raw_readl(_msc01_biu_base + MSC01_SC_CFG_OFS); - __raw_writel(i | (0x1 << MSC01_SC_CFG_GICENA_SHF), - _msc01_biu_base + MSC01_SC_CFG_OFS); - pr_debug("GIC Enabled\n"); - } - i8259_irq = MIPS_GIC_IRQ_BASE + GIC_INT_I8259A; corehi_irq = MIPS_CPU_IRQ_BASE + MIPSCPU_INT_COREHI; } else { #if defined(CONFIG_MIPS_MT_SMP) @@ -361,33 +280,13 @@ void __init arch_init_irq(void) arch_init_ipiirq(cpu_ipi_call_irq, &irq_call); #endif if (cpu_has_veic) { - set_vi_handler(MSC01E_INT_I8259A, - malta_hw0_irqdispatch); set_vi_handler(MSC01E_INT_COREHI, corehi_irqdispatch); - i8259_irq = MSC01E_INT_BASE + MSC01E_INT_I8259A; corehi_irq = MSC01E_INT_BASE + MSC01E_INT_COREHI; } else { - i8259_irq = MIPS_CPU_IRQ_BASE + MIPSCPU_INT_I8259A; corehi_irq = MIPS_CPU_IRQ_BASE + MIPSCPU_INT_COREHI; } } - setup_irq(i8259_irq, &i8259irq); setup_irq(corehi_irq, &corehi_irqaction); } - -void malta_be_init(void) -{ - /* Could change CM error mask register. */ -} - -int malta_be_handler(struct pt_regs *regs, int is_fixup) -{ - /* This duplicates the handling in do_be which seems wrong */ - int retval = is_fixup ? MIPS_BE_FIXUP : MIPS_BE_FATAL; - - mips_cm_error_report(); - - return retval; -} |