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MIPS: Use mips_gic_present() in place of gic_present

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In preparation for removing the gic_present global variable, switch to
using the mips_gic_present() function instead. For the most part this is
a straightforward substitution. In cases which previously wrapped the
GIC case in an #ifdef CONFIG_MIPS_GIC that #ifdef has been removed,
since mips_gic_present() will return a compile-time constant false
allowing the affected code to be optimised out anyway.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/17044/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Paul Burton 2017-08-12 21:36:34 -07:00 committed by Ralf Baechle
parent 85eec73ce4
commit 72eb29951f
5 changed files with 17 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
arch/mips/generic/irq.c
View File

@ -16,6 +16,7 @@
#include <linux/types.h>
#include <asm/irq.h>
#include <asm/mips-cps.h>
#include <asm/time.h>
int get_c0_fdc_int(void)
@ -24,7 +25,7 @@ int get_c0_fdc_int(void)
if (cpu_has_veic)
panic("Unimplemented!");
else if (gic_present)
else if (mips_gic_present())
mips_cpu_fdc_irq = gic_get_c0_fdc_int();
else if (cp0_fdc_irq >= 0)
mips_cpu_fdc_irq = MIPS_CPU_IRQ_BASE + cp0_fdc_irq;
@ -40,7 +41,7 @@ int get_c0_perfcount_int(void)
if (cpu_has_veic)
panic("Unimplemented!");
else if (gic_present)
else if (mips_gic_present())
mips_cpu_perf_irq = gic_get_c0_perfcount_int();
else if (cp0_perfcount_irq >= 0)
mips_cpu_perf_irq = MIPS_CPU_IRQ_BASE + cp0_perfcount_irq;
@ -56,7 +57,7 @@ unsigned int get_c0_compare_int(void)
if (cpu_has_veic)
panic("Unimplemented!");
else if (gic_present)
else if (mips_gic_present())
mips_cpu_timer_irq = gic_get_c0_compare_int();
else
mips_cpu_timer_irq = MIPS_CPU_IRQ_BASE + cp0_compare_irq;

6
arch/mips/kernel/smp-mt.c
View File

@ -21,7 +21,6 @@
#include <linux/sched.h>
#include <linux/cpumask.h>
#include <linux/interrupt.h>
#include <linux/irqchip/mips-gic.h>
#include <linux/compiler.h>
#include <linux/sched/task_stack.h>
#include <linux/smp.h>
@ -36,6 +35,7 @@
#include <asm/mipsregs.h>
#include <asm/mipsmtregs.h>
#include <asm/mips_mt.h>
#include <asm/mips-cps.h>
static void __init smvp_copy_vpe_config(void)
{
@ -118,14 +118,12 @@ static void __init smvp_tc_init(unsigned int tc, unsigned int mvpconf0)
static void vsmp_init_secondary(void)
{
#ifdef CONFIG_MIPS_GIC
/* This is Malta specific: IPI,performance and timer interrupts */
if (gic_present)
if (mips_gic_present())
change_c0_status(ST0_IM, STATUSF_IP2 | STATUSF_IP3 |
STATUSF_IP4 | STATUSF_IP5 |
STATUSF_IP6 | STATUSF_IP7);
else
#endif
change_c0_status(ST0_IM, STATUSF_IP0 | STATUSF_IP1 |
STATUSF_IP6 | STATUSF_IP7);
}

4
arch/mips/lantiq/irq.c
View File

@ -61,10 +61,6 @@
/* we have a cascade of 8 irqs */
#define MIPS_CPU_IRQ_CASCADE 8
#ifdef CONFIG_MIPS_MT_SMP
int gic_present;
#endif
static int exin_avail;
static u32 ltq_eiu_irq[MAX_EIU];
static void __iomem *ltq_icu_membase[MAX_IM];

4
arch/mips/mti-malta/malta-int.c
View File

@ -19,7 +19,6 @@
#include <linux/smp.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/irqchip/mips-gic.h>
#include <linux/of_irq.h>
#include <linux/kernel_stat.h>
#include <linux/kernel.h>
@ -31,6 +30,7 @@
#include <asm/irq_regs.h>
#include <asm/mips-boards/malta.h>
#include <asm/mips-boards/maltaint.h>
#include <asm/mips-cps.h>
#include <asm/gt64120.h>
#include <asm/mips-boards/generic.h>
#include <asm/mips-boards/msc01_pci.h>
@ -214,7 +214,7 @@ void __init arch_init_irq(void)
msc_nr_irqs);
}
if (gic_present) {
if (mips_gic_present()) {
corehi_irq = MIPS_CPU_IRQ_BASE + MIPSCPU_INT_COREHI;
} else if (cpu_has_veic) {
set_vi_handler(MSC01E_INT_COREHI, corehi_irqdispatch);

19
arch/mips/mti-malta/malta-time.c
View File

@ -40,6 +40,7 @@
#include <asm/time.h>
#include <asm/mc146818-time.h>
#include <asm/msc01_ic.h>
#include <asm/mips-cps.h>
#include <asm/mips-boards/generic.h>
#include <asm/mips-boards/maltaint.h>
@ -85,7 +86,7 @@ static void __init estimate_frequencies(void)
local_irq_save(flags);
if (gic_present)
if (mips_gic_present())
clear_gic_config(GIC_CONFIG_COUNTSTOP);
/*
@ -95,7 +96,7 @@ static void __init estimate_frequencies(void)
while (CMOS_READ(RTC_REG_A) & RTC_UIP);
while (!(CMOS_READ(RTC_REG_A) & RTC_UIP));
start = read_c0_count();
if (gic_present)
if (mips_gic_present())
gicstart = read_gic_counter();
/* Wait for falling edge before reading RTC. */
@ -105,7 +106,7 @@ static void __init estimate_frequencies(void)
/* Read counters again exactly on rising edge of update flag. */
while (!(CMOS_READ(RTC_REG_A) & RTC_UIP));
count = read_c0_count();
if (gic_present)
if (mips_gic_present())
giccount = read_gic_counter();
/* Wait for falling edge before reading RTC again. */
@ -128,7 +129,7 @@ static void __init estimate_frequencies(void)
count /= secs;
mips_hpt_frequency = count;
if (gic_present) {
if (mips_gic_present()) {
giccount = div_u64(giccount - gicstart, secs);
gic_frequency = giccount;
}
@ -154,7 +155,7 @@ int get_c0_fdc_int(void)
if (cpu_has_veic)
return -1;
else if (gic_present)
else if (mips_gic_present())
return gic_get_c0_fdc_int();
else if (cp0_fdc_irq >= 0)
return MIPS_CPU_IRQ_BASE + cp0_fdc_irq;
@ -167,7 +168,7 @@ int get_c0_perfcount_int(void)
if (cpu_has_veic) {
set_vi_handler(MSC01E_INT_PERFCTR, mips_perf_dispatch);
mips_cpu_perf_irq = MSC01E_INT_BASE + MSC01E_INT_PERFCTR;
} else if (gic_present) {
} else if (mips_gic_present()) {
mips_cpu_perf_irq = gic_get_c0_perfcount_int();
} else if (cp0_perfcount_irq >= 0) {
mips_cpu_perf_irq = MIPS_CPU_IRQ_BASE + cp0_perfcount_irq;
@ -184,7 +185,7 @@ unsigned int get_c0_compare_int(void)
if (cpu_has_veic) {
set_vi_handler(MSC01E_INT_CPUCTR, mips_timer_dispatch);
mips_cpu_timer_irq = MSC01E_INT_BASE + MSC01E_INT_CPUCTR;
} else if (gic_present) {
} else if (mips_gic_present()) {
mips_cpu_timer_irq = gic_get_c0_compare_int();
} else {
mips_cpu_timer_irq = MIPS_CPU_IRQ_BASE + cp0_compare_irq;
@ -258,8 +259,7 @@ void __init plat_time_init(void)
setup_pit_timer();
#endif
#ifdef CONFIG_MIPS_GIC
if (gic_present) {
if (mips_gic_present()) {
freq = freqround(gic_frequency, 5000);
printk("GIC frequency %d.%02d MHz\n", freq/1000000,
(freq%1000000)*100/1000000);
@ -268,5 +268,4 @@ void __init plat_time_init(void)
timer_probe();
#endif
}
#endif
}