xref: /openbmc/linux/arch/mips/generic/irq.c (revision 09c434b8)
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 }
66