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-rw-r--r--arch/blackfin/kernel/irqchip.c132
1 files changed, 0 insertions, 132 deletions
diff --git a/arch/blackfin/kernel/irqchip.c b/arch/blackfin/kernel/irqchip.c
deleted file mode 100644
index 052cde5ed2e4..000000000000
--- a/arch/blackfin/kernel/irqchip.c
+++ /dev/null
@@ -1,132 +0,0 @@
-/*
- * Copyright 2005-2009 Analog Devices Inc.
- *
- * Licensed under the GPL-2 or later
- */
-
-#include <linux/kernel_stat.h>
-#include <linux/module.h>
-#include <linux/random.h>
-#include <linux/seq_file.h>
-#include <linux/kallsyms.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/seq_file.h>
-#include <asm/irq_handler.h>
-#include <asm/trace.h>
-#include <asm/pda.h>
-
-static atomic_t irq_err_count;
-void ack_bad_irq(unsigned int irq)
-{
- atomic_inc(&irq_err_count);
- printk(KERN_ERR "IRQ: spurious interrupt %d\n", irq);
-}
-
-static struct irq_desc bad_irq_desc = {
- .handle_irq = handle_bad_irq,
- .lock = __RAW_SPIN_LOCK_UNLOCKED(bad_irq_desc.lock),
-};
-
-#ifdef CONFIG_CPUMASK_OFFSTACK
-/* We are not allocating a variable-sized bad_irq_desc.affinity */
-#error "Blackfin architecture does not support CONFIG_CPUMASK_OFFSTACK."
-#endif
-
-#ifdef CONFIG_PROC_FS
-int arch_show_interrupts(struct seq_file *p, int prec)
-{
- int j;
-
- seq_printf(p, "%*s: ", prec, "NMI");
- for_each_online_cpu(j)
- seq_printf(p, "%10u ", cpu_pda[j].__nmi_count);
- seq_printf(p, " CORE Non Maskable Interrupt\n");
- seq_printf(p, "%*s: %10u\n", prec, "ERR", atomic_read(&irq_err_count));
- return 0;
-}
-#endif
-
-#ifdef CONFIG_DEBUG_STACKOVERFLOW
-static void check_stack_overflow(int irq)
-{
- /* Debugging check for stack overflow: is there less than STACK_WARN free? */
- long sp = __get_SP() & (THREAD_SIZE - 1);
-
- if (unlikely(sp < (sizeof(struct thread_info) + STACK_WARN))) {
- dump_stack();
- pr_emerg("irq%i: possible stack overflow only %ld bytes free\n",
- irq, sp - sizeof(struct thread_info));
- }
-}
-#else
-static inline void check_stack_overflow(int irq) { }
-#endif
-
-#ifndef CONFIG_IPIPE
-static void maybe_lower_to_irq14(void)
-{
- unsigned short pending, other_ints;
-
- /*
- * If we're the only interrupt running (ignoring IRQ15 which
- * is for syscalls), lower our priority to IRQ14 so that
- * softirqs run at that level. If there's another,
- * lower-level interrupt, irq_exit will defer softirqs to
- * that. If the interrupt pipeline is enabled, we are already
- * running at IRQ14 priority, so we don't need this code.
- */
- CSYNC();
- pending = bfin_read_IPEND() & ~0x8000;
- other_ints = pending & (pending - 1);
- if (other_ints == 0)
- lower_to_irq14();
-}
-#else
-static inline void maybe_lower_to_irq14(void) { }
-#endif
-
-/*
- * do_IRQ handles all hardware IRQs. Decoded IRQs should not
- * come via this function. Instead, they should provide their
- * own 'handler'
- */
-#ifdef CONFIG_DO_IRQ_L1
-__attribute__((l1_text))
-#endif
-asmlinkage void asm_do_IRQ(unsigned int irq, struct pt_regs *regs)
-{
- struct pt_regs *old_regs = set_irq_regs(regs);
-
- irq_enter();
-
- check_stack_overflow(irq);
-
- /*
- * Some hardware gives randomly wrong interrupts. Rather
- * than crashing, do something sensible.
- */
- if (irq >= NR_IRQS)
- handle_bad_irq(&bad_irq_desc);
- else
- generic_handle_irq(irq);
-
- maybe_lower_to_irq14();
-
- irq_exit();
-
- set_irq_regs(old_regs);
-}
-
-void __init init_IRQ(void)
-{
- init_arch_irq();
-
-#ifdef CONFIG_DEBUG_BFIN_HWTRACE_EXPAND
- /* Now that evt_ivhw is set up, turn this on */
- trace_buff_offset = 0;
- bfin_write_TBUFCTL(BFIN_TRACE_ON);
- printk(KERN_INFO "Hardware Trace expanded to %ik\n",
- 1 << CONFIG_DEBUG_BFIN_HWTRACE_EXPAND_LEN);
-#endif
-}