arch/mips/generic/irq.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Copyright (C) 2016 Imagination Technologies
   4  * Author: Paul Burton <paul.burton@mips.com>
   5  */
   6
   7 #include <linux/clk.h>
   8 #include <linux/clk-provider.h>
   9 #include <linux/clocksource.h>
  10 #include <linux/init.h>
  11 #include <linux/types.h>
  12
  13 #include <asm/irq.h>
  14 #include <asm/mips-cps.h>
  15 #include <asm/time.h>
  16
  17 int get_c0_fdc_int(void)
  18 {
  19         int mips_cpu_fdc_irq;
  20
  21         if (mips_gic_present())
  22                 mips_cpu_fdc_irq = gic_get_c0_fdc_int();
  23         else if (cpu_has_veic)
  24                 panic("Unimplemented!");
  25         else if (cp0_fdc_irq >= 0)
  26                 mips_cpu_fdc_irq = MIPS_CPU_IRQ_BASE + cp0_fdc_irq;
  27         else
  28                 mips_cpu_fdc_irq = -1;
  29
  30         return mips_cpu_fdc_irq;
  31 }
  32
  33 int get_c0_perfcount_int(void)
  34 {
  35         int mips_cpu_perf_irq;
  36
  37         if (mips_gic_present())
  38                 mips_cpu_perf_irq = gic_get_c0_perfcount_int();
  39         else if (cpu_has_veic)
  40                 panic("Unimplemented!");
  41         else if (cp0_perfcount_irq >= 0)
  42                 mips_cpu_perf_irq = MIPS_CPU_IRQ_BASE + cp0_perfcount_irq;
  43         else
  44                 mips_cpu_perf_irq = -1;
  45
  46         return mips_cpu_perf_irq;
  47 }
  48
  49 unsigned int get_c0_compare_int(void)
  50 {
  51         int mips_cpu_timer_irq;
  52
  53         if (mips_gic_present())
  54                 mips_cpu_timer_irq = gic_get_c0_compare_int();
  55         else if (cpu_has_veic)
  56                 panic("Unimplemented!");
  57         else
  58                 mips_cpu_timer_irq = MIPS_CPU_IRQ_BASE + cp0_compare_irq;
  59
  60         return mips_cpu_timer_irq;
  61 }