diff mbox

[v4,5/5] ARC: [intc-*] switch to linear domain

Message ID 1460547605-26184-6-git-send-email-vgupta@synopsys.com
State New
Headers show

Commit Message

Vineet Gupta April 13, 2016, 11:40 a.m. UTC 
Now that we have Timers probed from DT, don't need legacy domain

This however requires mapping to be called explicitly for the IRQ which
still can't (and probably never) be probed from DT such as IPI and
SOFTIRQ

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
---
 arch/arc/kernel/intc-arcv2.c   | 8 ++++++--
 arch/arc/kernel/intc-compact.c | 2 +-
 2 files changed, 7 insertions(+), 3 deletions(-)

Comments

Vineet Gupta April 18, 2016, 6:51 a.m. UTC | #1 
Hi Marc,

On Wednesday 13 April 2016 05:10 PM, Vineet Gupta wrote:
> Now that we have Timers probed from DT, don't need legacy domain
> 
> This however requires mapping to be called explicitly for the IRQ which
> still can't (and probably never) be probed from DT such as IPI and
> SOFTIRQ
> 
> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
> ---
>  arch/arc/kernel/intc-arcv2.c   | 8 ++++++--
>  arch/arc/kernel/intc-compact.c | 2 +-
>  2 files changed, 7 insertions(+), 3 deletions(-)
> 
> diff --git a/arch/arc/kernel/intc-arcv2.c b/arch/arc/kernel/intc-arcv2.c
> index 592cc977151e..6c24faf48b16 100644
> --- a/arch/arc/kernel/intc-arcv2.c
> +++ b/arch/arc/kernel/intc-arcv2.c
> @@ -146,8 +146,7 @@ init_onchip_IRQ(struct device_node *intc, struct device_node *parent)
>  	if (parent)
>  		panic("DeviceTree incore intc not a root irq controller\n");
>  
> -	root_domain = irq_domain_add_legacy(intc, NR_CPU_IRQS, 0, 0,
> -					    &arcv2_irq_ops, NULL);
> +	root_domain = irq_domain_add_linear(intc, NR_CPU_IRQS, &arcv2_irq_ops, NULL);
>  	if (!root_domain)
>  		panic("root irq domain not avail\n");
>  
> @@ -157,6 +156,11 @@ init_onchip_IRQ(struct device_node *intc, struct device_node *parent)
>  	 */
>  	irq_set_default_host(root_domain);
>  
> +#ifdef CONFIG_SMP
> +	irq_create_mapping(root_domain, IPI_IRQ);
> +#endif
> +	irq_create_mapping(root_domain, SOFTIRQ_IRQ);
> +
>  	return 0;
>  }
>  
> diff --git a/arch/arc/kernel/intc-compact.c b/arch/arc/kernel/intc-compact.c
> index 48a8b24de23e..c5cceca36118 100644
> --- a/arch/arc/kernel/intc-compact.c
> +++ b/arch/arc/kernel/intc-compact.c
> @@ -105,7 +105,7 @@ init_onchip_IRQ(struct device_node *intc, struct device_node *parent)
>  	if (parent)
>  		panic("DeviceTree incore intc not a root irq controller\n");
>  
> -	root_domain = irq_domain_add_legacy(intc, NR_CPU_IRQS, 0, 0,
> +	root_domain = irq_domain_add_linear(intc, NR_CPU_IRQS,
>  					    &arc_intc_domain_ops, NULL);
>  	if (!root_domain)
>  		panic("root irq domain not avail\n");
> 

Does this patch look ok to you ? Do you want to see any other improvements here.

-Vineet
Marc Zyngier April 18, 2016, 9:41 a.m. UTC | #2 
On 18/04/16 07:51, Vineet Gupta wrote:
> Hi Marc,
> 
> On Wednesday 13 April 2016 05:10 PM, Vineet Gupta wrote:
>> Now that we have Timers probed from DT, don't need legacy domain
>>
>> This however requires mapping to be called explicitly for the IRQ which
>> still can't (and probably never) be probed from DT such as IPI and
>> SOFTIRQ
>>
>> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
>> ---
>>  arch/arc/kernel/intc-arcv2.c   | 8 ++++++--
>>  arch/arc/kernel/intc-compact.c | 2 +-
>>  2 files changed, 7 insertions(+), 3 deletions(-)
>>
>> diff --git a/arch/arc/kernel/intc-arcv2.c b/arch/arc/kernel/intc-arcv2.c
>> index 592cc977151e..6c24faf48b16 100644
>> --- a/arch/arc/kernel/intc-arcv2.c
>> +++ b/arch/arc/kernel/intc-arcv2.c
>> @@ -146,8 +146,7 @@ init_onchip_IRQ(struct device_node *intc, struct device_node *parent)
>>  	if (parent)
>>  		panic("DeviceTree incore intc not a root irq controller\n");
>>  
>> -	root_domain = irq_domain_add_legacy(intc, NR_CPU_IRQS, 0, 0,
>> -					    &arcv2_irq_ops, NULL);
>> +	root_domain = irq_domain_add_linear(intc, NR_CPU_IRQS, &arcv2_irq_ops, NULL);
>>  	if (!root_domain)
>>  		panic("root irq domain not avail\n");
>>  
>> @@ -157,6 +156,11 @@ init_onchip_IRQ(struct device_node *intc, struct device_node *parent)
>>  	 */
>>  	irq_set_default_host(root_domain);
>>  
>> +#ifdef CONFIG_SMP
>> +	irq_create_mapping(root_domain, IPI_IRQ);
>> +#endif
>> +	irq_create_mapping(root_domain, SOFTIRQ_IRQ);
>> +
>>  	return 0;
>>  }
>>  
>> diff --git a/arch/arc/kernel/intc-compact.c b/arch/arc/kernel/intc-compact.c
>> index 48a8b24de23e..c5cceca36118 100644
>> --- a/arch/arc/kernel/intc-compact.c
>> +++ b/arch/arc/kernel/intc-compact.c
>> @@ -105,7 +105,7 @@ init_onchip_IRQ(struct device_node *intc, struct device_node *parent)
>>  	if (parent)
>>  		panic("DeviceTree incore intc not a root irq controller\n");
>>  
>> -	root_domain = irq_domain_add_legacy(intc, NR_CPU_IRQS, 0, 0,
>> +	root_domain = irq_domain_add_linear(intc, NR_CPU_IRQS,
>>  					    &arc_intc_domain_ops, NULL);
>>  	if (!root_domain)
>>  		panic("root irq domain not avail\n");
>>
> 
> Does this patch look ok to you ? Do you want to see any other improvements here.

Decoupling HW irqs from Linux irqs is a major progress, so for that:

Acked-by: Marc Zyngier <marc.zyngier@arm.com>

Thanks,

	M.
diff mbox

Patch

diff --git a/arch/arc/kernel/intc-arcv2.c b/arch/arc/kernel/intc-arcv2.c
index 592cc977151e..6c24faf48b16 100644
--- a/arch/arc/kernel/intc-arcv2.c
+++ b/arch/arc/kernel/intc-arcv2.c
@@ -146,8 +146,7 @@  init_onchip_IRQ(struct device_node *intc, struct device_node *parent)
 	if (parent)
 		panic("DeviceTree incore intc not a root irq controller\n");
 
-	root_domain = irq_domain_add_legacy(intc, NR_CPU_IRQS, 0, 0,
-					    &arcv2_irq_ops, NULL);
+	root_domain = irq_domain_add_linear(intc, NR_CPU_IRQS, &arcv2_irq_ops, NULL);
 	if (!root_domain)
 		panic("root irq domain not avail\n");
 
@@ -157,6 +156,11 @@  init_onchip_IRQ(struct device_node *intc, struct device_node *parent)
 	 */
 	irq_set_default_host(root_domain);
 
+#ifdef CONFIG_SMP
+	irq_create_mapping(root_domain, IPI_IRQ);
+#endif
+	irq_create_mapping(root_domain, SOFTIRQ_IRQ);
+
 	return 0;
 }
 
diff --git a/arch/arc/kernel/intc-compact.c b/arch/arc/kernel/intc-compact.c
index 48a8b24de23e..c5cceca36118 100644
--- a/arch/arc/kernel/intc-compact.c
+++ b/arch/arc/kernel/intc-compact.c
@@ -105,7 +105,7 @@  init_onchip_IRQ(struct device_node *intc, struct device_node *parent)
 	if (parent)
 		panic("DeviceTree incore intc not a root irq controller\n");
 
-	root_domain = irq_domain_add_legacy(intc, NR_CPU_IRQS, 0, 0,
+	root_domain = irq_domain_add_linear(intc, NR_CPU_IRQS,
 					    &arc_intc_domain_ops, NULL);
 	if (!root_domain)
 		panic("root irq domain not avail\n");