linux-kernel - Re: [RFC PATCH v3 22/37] irqchip: Add kvx-core-intc core interrupt controller driver

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Message-ID: <f6d293a4-0261-4030-9e86-2f990ea49284@kalrayinc.com>
Date: Fri, 23 Aug 2024 14:54:37 +0200
From: Yann Sionneau <ysionneau@...rayinc.com>
To: Krzysztof Kozlowski <krzk@...nel.org>, linux-kernel@...r.kernel.org,
 Thomas Gleixner <tglx@...utronix.de>
Cc: Jonathan Borne <jborne@...rayinc.com>, Julian Vetter
 <jvetter@...rayinc.com>, Clement Leger <clement@...ment-leger.fr>, Vincent
 Chardon <vincent.chardon@...ys-design.com>, Jules Maselbas
 <jmaselbas@...v.net>
Subject: Re: [RFC PATCH v3 22/37] irqchip: Add kvx-core-intc core interrupt
 controller driver

Hello Krzysztof,

On 22/07/2024 14:32, Krzysztof Kozlowski wrote:
> On 22/07/2024 11:41, ysionneau@...rayinc.com wrote:
>> From: Yann Sionneau <ysionneau@...rayinc.com>
>>
>> Each kvx core includes a hardware interrupt controller (core INTC)
>> with the following features:
>>  - 32 independent interrupt sources
>>  - 4-bit priotity level
>>  - Individual interrupt enable bit
>>  - Interrupt status bit displaying the pending interrupts
>>  - Priority management between the 32 interrupts
>
> ...
>
>> +
>> +static int __init
>> +kvx_init_core_intc(struct device_node *intc, struct device_node *parent)
>> +{
>> +	uint32_t core_nr_irqs;
>> +	unsigned long cpuid;
>> +	int ret;
>> +
>> +	ret = kvx_of_parent_cpuid(intc, &cpuid);
>> +	if (ret)
>> +		panic("core intc has no CPU parent\n");
>> +
>> +	if (smp_processor_id() != cpuid) {
>> +		fwnode_dev_initialized(of_fwnode_handle(intc), true);
>> +		return 0;
>> +	}
>> +
>> +	if (of_property_read_u32(intc, "kalray,intc-nr-irqs", &core_nr_irqs))
> There is no such property. Stop adding fake properties to your code.

Ack, I will replace this with a CORE_INTC_MAX_IRQ_NUM define

-- 

Yann