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ANDROID: irqchip/irq-gic-v3: Add vendor hook for gic suspend

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This change adds vendor hook for gic suspend syscore ops callback.
And it is invoked during deepsleep and hibernation to store
gic register snapshot.

Bug: 340049585
Change-Id: I4e3729afa4daf18d73e00ee9601b6da72a578b4a
Signed-off-by: Nagireddy Annem <quic_nannem@quicinc.com>
Signed-off-by: Kamati Srinivas <quic_kamasrin@quicinc.com>
This commit is contained in:
Kamati Srinivas 2024-07-03 14:39:10 +05:30 committed by Ksawlii
parent 6e318661f7
commit 826acfacd4
4 changed files with 26 additions and 3 deletions
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1
drivers/android/vendor_hooks.c
View file

@ -145,6 +145,7 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_cpu_idle_enter);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_cpu_idle_exit);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_find_busiest_group);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_gic_resume);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_gic_suspend);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_wq_lockup_pool);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_ipi_stop);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_dump_throttled_rt_tasks);

19
drivers/irqchip/irq-gic-v3.c
View file

@ -217,10 +217,11 @@ static void gic_do_wait_for_rwp(void __iomem *base, u32 bit)
}
/* Wait for completion of a distributor change */
static void gic_dist_wait_for_rwp(void)
void gic_dist_wait_for_rwp(void)
{
gic_do_wait_for_rwp(gic_data.dist_base, GICD_CTLR_RWP);
}
EXPORT_SYMBOL_GPL(gic_dist_wait_for_rwp);
/* Wait for completion of a redistributor change */
static void gic_redist_wait_for_rwp(void)
@ -804,7 +805,7 @@ static bool gic_has_group0(void)
return val != 0;
}
static void __init gic_dist_init(void)
void gic_dist_init(void)
{
unsigned int i;
u64 affinity;
@ -862,6 +863,7 @@ static void __init gic_dist_init(void)
for (i = 0; i < GIC_ESPI_NR; i++)
gic_write_irouter(affinity, base + GICD_IROUTERnE + i * 8);
}
EXPORT_SYMBOL_GPL(gic_dist_init);
static int gic_iterate_rdists(int (*fn)(struct redist_region *, void __iomem *))
{
@ -1143,7 +1145,7 @@ static int gic_dist_supports_lpis(void)
!gicv3_nolpi);
}
static void gic_cpu_init(void)
void gic_cpu_init(void)
{
void __iomem *rbase;
int i;
@ -1170,6 +1172,7 @@ static void gic_cpu_init(void)
/* initialise system registers */
gic_cpu_sys_reg_init();
}
EXPORT_SYMBOL_GPL(gic_cpu_init);
#ifdef CONFIG_SMP
@ -1370,8 +1373,17 @@ void gic_resume(void)
}
EXPORT_SYMBOL_GPL(gic_resume);
static int gic_suspend(void)
{
int ret = 0;
trace_android_vh_gic_suspend(&gic_data, &ret);
return ret;
}
static struct syscore_ops gic_syscore_ops = {
.resume = gic_resume,
.suspend = gic_suspend,
};
static void gic_syscore_init(void)
@ -1382,6 +1394,7 @@ static void gic_syscore_init(void)
#else
static inline void gic_syscore_init(void) { }
void gic_resume(void) { }
static int gic_suspend(void) { return 0; }
#endif

3
include/linux/irqchip/arm-gic-v3.h
View file

@ -723,6 +723,9 @@ static inline bool gic_enable_sre(void)
}
void gic_resume(void);
void gic_dist_init(void);
void gic_cpu_init(void);
void gic_dist_wait_for_rwp(void);
#endif

6
include/trace/hooks/gic_v3.h
View file

@ -19,6 +19,9 @@ struct irq_data;
/* struct irq_data */
#include <linux/irq.h>
#endif /* __GENKSYMS__ */
struct gic_chip_data;
DECLARE_RESTRICTED_HOOK(android_rvh_gic_v3_set_affinity,
TP_PROTO(struct irq_data *d, const struct cpumask *mask_val,
u64 *affinity, bool force, void __iomem *base),
@ -26,6 +29,9 @@ DECLARE_RESTRICTED_HOOK(android_rvh_gic_v3_set_affinity,
1);
/* macro versions of hooks are no longer required */
DECLARE_HOOK(android_vh_gic_suspend,
TP_PROTO(struct gic_chip_data *gd, int *ret),
TP_ARGS(gd, ret));
#endif /* _TRACE_HOOK_GIC_V3_H */
/* This part must be outside protection */