[kvm-unit-tests,v2,03/16] arm/arm64: gic: Introduce setup_irq() helper
diff mbox series

Message ID 20200110145412.14937-4-eric.auger@redhat.com
State New
Headers show
Series
  • arm/arm64: Add ITS tests
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Commit Message

Auger Eric Jan. 10, 2020, 2:53 p.m. UTC
ipi_enable() code would be reusable for other interrupts
than IPI. Let's rename it setup_irq() and pass an interrupt
handler pointer. We also export it to use it in other tests
such as the PMU's one.

Signed-off-by: Eric Auger <eric.auger@redhat.com>
---
 arm/gic.c         | 24 +++---------------------
 lib/arm/asm/gic.h |  3 +++
 lib/arm/gic.c     | 11 +++++++++++
 3 files changed, 17 insertions(+), 21 deletions(-)

Comments

Andrew Jones Jan. 13, 2020, 4:53 p.m. UTC | #1
On Fri, Jan 10, 2020 at 03:53:59PM +0100, Eric Auger wrote:
> ipi_enable() code would be reusable for other interrupts
> than IPI. Let's rename it setup_irq() and pass an interrupt
> handler pointer. We also export it to use it in other tests
> such as the PMU's one.
> 
> Signed-off-by: Eric Auger <eric.auger@redhat.com>
> ---
>  arm/gic.c         | 24 +++---------------------
>  lib/arm/asm/gic.h |  3 +++
>  lib/arm/gic.c     | 11 +++++++++++
>  3 files changed, 17 insertions(+), 21 deletions(-)
> 
> diff --git a/arm/gic.c b/arm/gic.c
> index fcf4c1f..ba43ae5 100644
> --- a/arm/gic.c
> +++ b/arm/gic.c
> @@ -215,20 +215,9 @@ static void ipi_test_smp(void)
>  	report_prefix_pop();
>  }
>  
> -static void ipi_enable(void)
> -{
> -	gic_enable_defaults();
> -#ifdef __arm__
> -	install_exception_handler(EXCPTN_IRQ, ipi_handler);
> -#else
> -	install_irq_handler(EL1H_IRQ, ipi_handler);
> -#endif
> -	local_irq_enable();
> -}
> -
>  static void ipi_send(void)
>  {
> -	ipi_enable();
> +	setup_irq(ipi_handler);
>  	wait_on_ready();
>  	ipi_test_self();
>  	ipi_test_smp();
> @@ -238,7 +227,7 @@ static void ipi_send(void)
>  
>  static void ipi_recv(void)
>  {
> -	ipi_enable();
> +	setup_irq(ipi_handler);
>  	cpumask_set_cpu(smp_processor_id(), &ready);
>  	while (1)
>  		wfi();
> @@ -295,14 +284,7 @@ static void ipi_clear_active_handler(struct pt_regs *regs __unused)
>  static void run_active_clear_test(void)
>  {
>  	report_prefix_push("active");
> -	gic_enable_defaults();
> -#ifdef __arm__
> -	install_exception_handler(EXCPTN_IRQ, ipi_clear_active_handler);
> -#else
> -	install_irq_handler(EL1H_IRQ, ipi_clear_active_handler);
> -#endif
> -	local_irq_enable();
> -
> +	setup_irq(ipi_clear_active_handler);
>  	ipi_test_self();
>  	report_prefix_pop();
>  }
> diff --git a/lib/arm/asm/gic.h b/lib/arm/asm/gic.h
> index 21cdb58..55dd84b 100644
> --- a/lib/arm/asm/gic.h
> +++ b/lib/arm/asm/gic.h
> @@ -82,5 +82,8 @@ void gic_set_irq_target(int irq, int cpu);
>  void gic_set_irq_group(int irq, int group);
>  int gic_get_irq_group(int irq);
>  
> +typedef void (*handler_t)(struct pt_regs *regs __unused);
> +extern void setup_irq(handler_t handler);
> +
>  #endif /* !__ASSEMBLY__ */
>  #endif /* _ASMARM_GIC_H_ */
> diff --git a/lib/arm/gic.c b/lib/arm/gic.c
> index aa9cb86..8416dde 100644
> --- a/lib/arm/gic.c
> +++ b/lib/arm/gic.c
> @@ -236,3 +236,14 @@ int gic_get_irq_group(int irq)
>  {
>  	return gic_masked_irq_bits(irq, GICD_IGROUPR, 1, 0, ACCESS_READ);
>  }
> +
> +void setup_irq(handler_t handler)
> +{
> +	gic_enable_defaults();
> +#ifdef __arm__
> +	install_exception_handler(EXCPTN_IRQ, handler);
> +#else
> +	install_irq_handler(EL1H_IRQ, handler);
> +#endif
> +	local_irq_enable();
> +}
> -- 
> 2.20.1
>

I'd rather not add this function to the common code, at least not without
calling it something with 'defaults' in the name. Also I'd prefer unit
tests to call local_irq_enable()/disable() themselves. I think it's fine
to implement this in arm/gic.c and duplicate it in arm/pmu.c, if needed.

Thanks,
drew

Patch
diff mbox series

diff --git a/arm/gic.c b/arm/gic.c
index fcf4c1f..ba43ae5 100644
--- a/arm/gic.c
+++ b/arm/gic.c
@@ -215,20 +215,9 @@  static void ipi_test_smp(void)
 	report_prefix_pop();
 }
 
-static void ipi_enable(void)
-{
-	gic_enable_defaults();
-#ifdef __arm__
-	install_exception_handler(EXCPTN_IRQ, ipi_handler);
-#else
-	install_irq_handler(EL1H_IRQ, ipi_handler);
-#endif
-	local_irq_enable();
-}
-
 static void ipi_send(void)
 {
-	ipi_enable();
+	setup_irq(ipi_handler);
 	wait_on_ready();
 	ipi_test_self();
 	ipi_test_smp();
@@ -238,7 +227,7 @@  static void ipi_send(void)
 
 static void ipi_recv(void)
 {
-	ipi_enable();
+	setup_irq(ipi_handler);
 	cpumask_set_cpu(smp_processor_id(), &ready);
 	while (1)
 		wfi();
@@ -295,14 +284,7 @@  static void ipi_clear_active_handler(struct pt_regs *regs __unused)
 static void run_active_clear_test(void)
 {
 	report_prefix_push("active");
-	gic_enable_defaults();
-#ifdef __arm__
-	install_exception_handler(EXCPTN_IRQ, ipi_clear_active_handler);
-#else
-	install_irq_handler(EL1H_IRQ, ipi_clear_active_handler);
-#endif
-	local_irq_enable();
-
+	setup_irq(ipi_clear_active_handler);
 	ipi_test_self();
 	report_prefix_pop();
 }
diff --git a/lib/arm/asm/gic.h b/lib/arm/asm/gic.h
index 21cdb58..55dd84b 100644
--- a/lib/arm/asm/gic.h
+++ b/lib/arm/asm/gic.h
@@ -82,5 +82,8 @@  void gic_set_irq_target(int irq, int cpu);
 void gic_set_irq_group(int irq, int group);
 int gic_get_irq_group(int irq);
 
+typedef void (*handler_t)(struct pt_regs *regs __unused);
+extern void setup_irq(handler_t handler);
+
 #endif /* !__ASSEMBLY__ */
 #endif /* _ASMARM_GIC_H_ */
diff --git a/lib/arm/gic.c b/lib/arm/gic.c
index aa9cb86..8416dde 100644
--- a/lib/arm/gic.c
+++ b/lib/arm/gic.c
@@ -236,3 +236,14 @@  int gic_get_irq_group(int irq)
 {
 	return gic_masked_irq_bits(irq, GICD_IGROUPR, 1, 0, ACCESS_READ);
 }
+
+void setup_irq(handler_t handler)
+{
+	gic_enable_defaults();
+#ifdef __arm__
+	install_exception_handler(EXCPTN_IRQ, handler);
+#else
+	install_irq_handler(EL1H_IRQ, handler);
+#endif
+	local_irq_enable();
+}