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irqchip: gic-v3: Add support to get pending irqs

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Add APIs to show pending interrupts in GIC.

Change-Id: Ifb7e515a06d6eb1fda82e0287e6c8084f4707c99
Signed-off-by: Swetha Chikkaboraiah <schikk@codeaurora.org>
This commit is contained in:
Swetha Chikkaboraiah 2020-09-21 11:21:08 +05:30 • committed by Gerrit - the friendly Code Review server
parent 464112e0b7
commit a95fbbfa70
2 changed files with 24 additions and 0 deletions
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23
drivers/irqchip/irq-gic-v3.c
View file

@ -344,6 +344,29 @@ static int gic_suspend(void)
return 0; return 0;
} }
/*
* gic_show_pending_irq - Shows the pending interrupts
* Note: Interrupts should be disabled on the cpu from which
* this is called to get accurate list of pending interrupts.
*/
void gic_show_pending_irqs(void)
{
void __iomem *base;
u32 pending, enabled;
unsigned int j;
base = gic_data.dist_base;
for (j = 0; j * 32 < gic_data.irq_nr; j++) {
enabled = readl_relaxed(base +
GICD_ISENABLER + j * 4);
pending = readl_relaxed(base +
GICD_ISPENDR + j * 4);
pr_err("Pending and enabled irqs[%d] %x %x\n", j,
pending, enabled);
}
}
static void gic_show_resume_irq(struct gic_chip_data *gic) static void gic_show_resume_irq(struct gic_chip_data *gic)
{ {
unsigned int i; unsigned int i;

1
include/linux/irqchip/arm-gic-v3.h
View file

@ -594,6 +594,7 @@ struct rdists {
}; };
struct irq_domain; struct irq_domain;
void gic_show_pending_irqs(void);
struct fwnode_handle; struct fwnode_handle;
int its_cpu_init(void); int its_cpu_init(void);
int its_init(struct fwnode_handle *handle, struct rdists *rdists, int its_init(struct fwnode_handle *handle, struct rdists *rdists,