arch/mips/generic/irq.c

   1 /*
   2  * Copyright (C) 2016 Imagination Technologies
   3  * Author: Paul Burton <paul.burton@imgtec.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/irqchip/mips-gic.h>
  16 #include <linux/types.h>
  17
  18 #include <asm/irq.h>
  19
  20 int get_c0_fdc_int(void)
  21 {
  22         int mips_cpu_fdc_irq;
  23
  24         if (cpu_has_veic)
  25                 panic("Unimplemented!");
  26         else if (gic_present)
  27                 mips_cpu_fdc_irq = gic_get_c0_fdc_int();
  28         else if (cp0_fdc_irq >= 0)
  29                 mips_cpu_fdc_irq = MIPS_CPU_IRQ_BASE + cp0_fdc_irq;
  30         else
  31                 mips_cpu_fdc_irq = -1;
  32
  33         return mips_cpu_fdc_irq;
  34 }
  35
  36 int get_c0_perfcount_int(void)
  37 {
  38         int mips_cpu_perf_irq;
  39
  40         if (cpu_has_veic)
  41                 panic("Unimplemented!");
  42         else if (gic_present)
  43                 mips_cpu_perf_irq = gic_get_c0_perfcount_int();
  44         else if (cp0_perfcount_irq >= 0)
  45                 mips_cpu_perf_irq = MIPS_CPU_IRQ_BASE + cp0_perfcount_irq;
  46         else
  47                 mips_cpu_perf_irq = -1;
  48
  49         return mips_cpu_perf_irq;
  50 }
  51
  52 unsigned int get_c0_compare_int(void)
  53 {
  54         int mips_cpu_timer_irq;
  55
  56         if (cpu_has_veic)
  57                 panic("Unimplemented!");
  58         else if (gic_present)
  59                 mips_cpu_timer_irq = gic_get_c0_compare_int();
  60         else
  61                 mips_cpu_timer_irq = MIPS_CPU_IRQ_BASE + cp0_compare_irq;
  62
  63         return mips_cpu_timer_irq;
  64 }