arch/mips/generic/irq.c

   1 /*
   2  * Copyright (C) 2016 Imagination Technologies
   3  * Author: Paul Burton <paul.burton@mips.com>
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License as published by the
   7  * Free Software Foundation; either version 2 of the License, or (at your
   8  * option) any later version.
   9  */
  10
  11 #include <linux/clk.h>
  12 #include <linux/clk-provider.h>
  13 #include <linux/clocksource.h>
  14 #include <linux/init.h>
  15 #include <linux/types.h>
  16
  17 #include <asm/irq.h>
  18 #include <asm/mips-cps.h>
  19 #include <asm/time.h>
  20
  21 int get_c0_fdc_int(void)
  22 {
  23         int mips_cpu_fdc_irq;
  24
  25         if (mips_gic_present())
  26                 mips_cpu_fdc_irq = gic_get_c0_fdc_int();
  27         else if (cpu_has_veic)
  28                 panic("Unimplemented!");
  29         else if (cp0_fdc_irq >= 0)
  30                 mips_cpu_fdc_irq = MIPS_CPU_IRQ_BASE + cp0_fdc_irq;
  31         else
  32                 mips_cpu_fdc_irq = -1;
  33
  34         return mips_cpu_fdc_irq;
  35 }
  36
  37 int get_c0_perfcount_int(void)
  38 {
  39         int mips_cpu_perf_irq;
  40
  41         if (mips_gic_present())
  42                 mips_cpu_perf_irq = gic_get_c0_perfcount_int();
  43         else if (cpu_has_veic)
  44                 panic("Unimplemented!");
  45         else if (cp0_perfcount_irq >= 0)
  46                 mips_cpu_perf_irq = MIPS_CPU_IRQ_BASE + cp0_perfcount_irq;
  47         else
  48                 mips_cpu_perf_irq = -1;
  49
  50         return mips_cpu_perf_irq;
  51 }
  52
  53 unsigned int get_c0_compare_int(void)
  54 {
  55         int mips_cpu_timer_irq;
  56
  57         if (mips_gic_present())
  58                 mips_cpu_timer_irq = gic_get_c0_compare_int();
  59         else if (cpu_has_veic)
  60                 panic("Unimplemented!");
  61         else
  62                 mips_cpu_timer_irq = MIPS_CPU_IRQ_BASE + cp0_compare_irq;
  63
  64         return mips_cpu_timer_irq;
  65 }