From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out-182.mta0.migadu.com (out-182.mta0.migadu.com [91.218.175.182]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 03F2B2AF04 for ; Tue, 1 Apr 2025 01:40:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.182 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1743471620; cv=none; b=NtpUfgBo2RWrE5b+dvoxyhCIH88wHEliKWADXbRzcIvMn8aKAtqWYcTHM2qiQR71+kRpyh5XzscMu7mhOZqR1W5fHx2p6CzjuUFFBIZVem+g6RfQKd/yPpoJYDlGSZZCehsB0sPSg7vI6qoGpMNK15tzdCyCNV1k55+xYRiHDfw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1743471620; c=relaxed/simple; bh=Ln079lz0yzjobmwJiN0OVPo+66Jkvv2FG4dAT0dZWOo=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=aIzFbmlo3WfScnOQKs7WjC3jGGm+H+FR3ysHhkhBwREJgBP5dD7Y/rzSHmEb6beaj1bfM1YQ5Lk2xunLWywhKYciQId4ZSU5h25dWY539Rj2P153Wd7oyxQk8iBraFzDiKSxg4Fo7nkA7fzJxUyWt01UvM4Q1iIF9L3X1gH37Qw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=r3y1bId/; arc=none smtp.client-ip=91.218.175.182 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="r3y1bId/" Message-ID: DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1743471604; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=o9ohi78hJmC8ZbZkUbSfn1oReFwEpPo/O49EMuN7f7U=; b=r3y1bId/Oq6Q+U02X4bb5gIfLFeBuu1LrKdBUBdSdiBo+rCUJxcBW9Hd8HR+h5jtqkUk9z EnY4fkQO6lEOGRJPOg29JTy318DZJcwTB2tWwZw/V8NPPWUNuWoUVQm6qsm4yfUV+XNElf vcKHzZ5Dzk3wJCWMbONGk9oi96TsNdc= Date: Tue, 1 Apr 2025 09:39:57 +0800 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Subject: Re: [PATCH v2 1/2] Docs/LoongArch: Add Advanced Extended-Redirect IRQ model description To: Tianyang Zhang , chenhuacai@kernel.org, kernel@xen0n.name, corbet@lwn.net, alexs@kernel.org, tglx@linutronix.de, jiaxun.yang@flygoat.com, peterz@infradead.org, wangliupu@loongson.cn, lvjianmin@loongson.cn, maobibo@loongson.cn, siyanteng@cqsoftware.com.cn, gaosong@loongson.cn, yangtiezhu@loongson.cn Cc: loongarch@lists.linux.dev, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org References: <20250331064116.32540-1-zhangtianyang@loongson.cn> <20250331064116.32540-2-zhangtianyang@loongson.cn> Content-Language: en-US X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. From: Yanteng Si In-Reply-To: <20250331064116.32540-2-zhangtianyang@loongson.cn> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT 在 3/31/25 2:41 PM, Tianyang Zhang 写道: > Introduce the redirect interrupt controllers.When the redirect interrupt > controller is enabled, the routing target of MSI interrupts is no longer a > specific CPU and vector number, but a specific redirect entry. The actual > CPU and vector number used are described by the redirect entry. > > Signed-off-by: Tianyang Zhang > --- > .../arch/loongarch/irq-chip-model.rst | 38 +++++++++++++++++++ > .../zh_CN/arch/loongarch/irq-chip-model.rst | 37 ++++++++++++++++++ > 2 files changed, 75 insertions(+) > > diff --git a/Documentation/arch/loongarch/irq-chip-model.rst b/Documentation/arch/loongarch/irq-chip-model.rst > index a7ecce11e445..84fafb86ec17 100644 > --- a/Documentation/arch/loongarch/irq-chip-model.rst > +++ b/Documentation/arch/loongarch/irq-chip-model.rst > @@ -181,6 +181,44 @@ go to PCH-PIC/PCH-LPC and gathered by EIOINTC, and then go to CPUINTC directly:: > | Devices | > +---------+ > > +Advanced Extended IRQ model (with redirection) > +=============== Did you do the build test? > + > +In this model, IPI (Inter-Processor Interrupt) and CPU Local Timer interrupt go > +to CPUINTC directly, CPU UARTS interrupts go to LIOINTC, PCH-MSI interrupts go > +to REDIRECT for remapping it to AVEC, and then go to CPUINTC directly, while all > +other devices interrupts go to PCH-PIC/PCH-LPC and gathered by EIOINTC, and then > +go to CPUINTC directly:: > + > + +-----+ +-----------------------+ +-------+ > + | IPI | --> | CPUINTC | <-- | Timer | > + +-----+ +-----------------------+ +-------+ > + ^ ^ ^ > + | | | > + +---------+ +----------+ +---------+ +-------+ > + | EIOINTC | | AVECINTC | | LIOINTC | <-- | UARTs | > + +---------+ +----------+ +---------+ +-------+ > + ^ ^ > + | | > + | +----------+ > + | | REDIRECT | > + | +----------+ > + | ^ > + | | > + +---------+ +---------+ > + | PCH-PIC | | PCH-MSI | > + +---------+ +---------+ > + ^ ^ ^ > + | | | > + +---------+ +---------+ +---------+ > + | Devices | | PCH-LPC | | Devices | > + +---------+ +---------+ +---------+ > + ^ > + | > + +---------+ > + | Devices | > + +---------+ > + > ACPI-related definitions > ======================== > > diff --git a/Documentation/translations/zh_CN/arch/loongarch/irq-chip-model.rst b/Documentation/translations/zh_CN/arch/loongarch/irq-chip-model.rst > index d4ff80de47b6..5d82cba07482 100644 > --- a/Documentation/translations/zh_CN/arch/loongarch/irq-chip-model.rst > +++ b/Documentation/translations/zh_CN/arch/loongarch/irq-chip-model.rst > @@ -174,6 +174,43 @@ CPU串口（UARTs）中断发送到LIOINTC，PCH-MSI中断发送到AVECINTC， > | Devices | > +---------+ > > +高级扩展IRQ模型 (带重定向) > +=============== ditto Thanks, Yanteng