linux-kernel - Re: [PATCH v13 03/13] irqchip/riscv-intc: Add support for RISC-V AIA

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Message-ID: <87cysrigud.ffs@tglx>
Date: Tue, 20 Feb 2024 11:13:14 +0100
From: Thomas Gleixner <tglx@...utronix.de>
To: Anup Patel <apatel@...tanamicro.com>, Palmer Dabbelt
 <palmer@...belt.com>, Paul Walmsley <paul.walmsley@...ive.com>, Rob
 Herring <robh+dt@...nel.org>, Krzysztof Kozlowski
 <krzysztof.kozlowski+dt@...aro.org>, Frank Rowand
 <frowand.list@...il.com>, Conor Dooley <conor+dt@...nel.org>
Cc: Marc Zyngier <maz@...nel.org>, Björn Töpel
 <bjorn@...nel.org>, Atish
 Patra <atishp@...shpatra.org>, Andrew Jones <ajones@...tanamicro.com>,
 Sunil V L <sunilvl@...tanamicro.com>, Saravana Kannan
 <saravanak@...gle.com>, Anup Patel <anup@...infault.org>,
 linux-riscv@...ts.infradead.org, linux-arm-kernel@...ts.infradead.org,
 linux-kernel@...r.kernel.org, devicetree@...r.kernel.org, Anup Patel
 <apatel@...tanamicro.com>
Subject: Re: [PATCH v13 03/13] irqchip/riscv-intc: Add support for RISC-V AIA

On Tue, Feb 20 2024 at 11:37, Anup Patel wrote:

> The RISC-V advanced interrupt architecture (AIA) extends the per-HART
> local interrupts in following ways:
> 1. Minimum 64 local interrupts for both RV32 and RV64
> 2. Ability to process multiple pending local interrupts in same
>    interrupt handler
> 3. Priority configuration for each local interrupts
> 4. Special CSRs to configure/access the per-HART MSI controller
>
> We add support for #1 and #2 described above in the RISC-V intc
> driver.

S/We add/Add/

> +static asmlinkage void riscv_intc_aia_irq(struct pt_regs *regs)
> +{
> +	unsigned long topi;
> +
> +	while ((topi = csr_read(CSR_TOPI)))
> +		generic_handle_domain_irq(intc_domain,
> +					  topi >> TOPI_IID_SHIFT);

Please let it stick out. You got 100 characters. All over the place.

Thanks,

        tglx