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Message-ID: <YplnruNz++gABlU0@debian.me>
Date: Fri, 3 Jun 2022 08:45:18 +0700
From: Bagas Sanjaya <bagasdotme@...il.com>
To: Huacai Chen <chenhuacai@...ngson.cn>
Cc: Arnd Bergmann <arnd@...db.de>, Andy Lutomirski <luto@...nel.org>,
Thomas Gleixner <tglx@...utronix.de>,
Peter Zijlstra <peterz@...radead.org>,
Andrew Morton <akpm@...ux-foundation.org>,
David Airlie <airlied@...ux.ie>,
Jonathan Corbet <corbet@....net>,
Linus Torvalds <torvalds@...ux-foundation.org>,
linux-arch@...r.kernel.org, linux-doc@...r.kernel.org,
linux-kernel@...r.kernel.org, Xuefeng Li <lixuefeng@...ngson.cn>,
Yanteng Si <siyanteng@...ngson.cn>,
Huacai Chen <chenhuacai@...il.com>,
Guo Ren <guoren@...nel.org>, Xuerui Wang <kernel@...0n.name>,
Jiaxun Yang <jiaxun.yang@...goat.com>,
Stephen Rothwell <sfr@...b.auug.org.au>,
WANG Xuerui <git@...0n.name>
Subject: Re: [PATCH V14 03/24] Documentation: LoongArch: Add basic
documentations
On Thu, Jun 02, 2022 at 07:51:20PM +0800, Huacai Chen wrote:
> +Legacy IRQ model
> +================
> +
> +In this model, IPI (Inter-Processor Interrupt) and CPU Local Timer interrupt go
> +to CPUINTC directly, CPU UARTS interrupts go to LIOINTC, while all other devices
> +interrupts go to PCH-PIC/PCH-LPC/PCH-MSI and gathered by HTVECINTC, and then go
> +to LIOINTC, and then CPUINTC.
> +
> + +---------------------------------------------+
> + |:: |
> + | |
> + | +-----+ +---------+ +-------+ |
> + | | IPI | --> | CPUINTC | <-- | Timer | |
> + | +-----+ +---------+ +-------+ |
> + | ^ |
> + | | |
> + | +---------+ +-------+ |
> + | | LIOINTC | <-- | UARTs | |
> + | +---------+ +-------+ |
> + | ^ |
> + | | |
> + | +-----------+ |
> + | | HTVECINTC | |
> + | +-----------+ |
> + | ^ ^ |
> + | | | |
> + | +---------+ +---------+ |
> + | | PCH-PIC | | PCH-MSI | |
> + | +---------+ +---------+ |
> + | ^ ^ ^ |
> + | | | | |
> + | +---------+ +---------+ +---------+ |
> + | | PCH-LPC | | Devices | | Devices | |
> + | +---------+ +---------+ +---------+ |
> + | ^ |
> + | | |
> + | +---------+ |
> + | | Devices | |
> + | +---------+ |
> + | |
> + | |
> + +---------------------------------------------+
> +
> +Extended IRQ model
> +==================
> +
> +In this model, IPI (Inter-Processor Interrupt) and CPU Local Timer interrupt go
> +to CPUINTC directly, CPU UARTS interrupts go to LIOINTC, while all other devices
> +interrupts go to PCH-PIC/PCH-LPC/PCH-MSI and gathered by EIOINTC, and then go to
> +to CPUINTC directly.
> +
> + +--------------------------------------------------------+
> + |:: |
> + | |
> + | +-----+ +---------+ +-------+ |
> + | | IPI | --> | CPUINTC | <-- | Timer | |
> + | +-----+ +---------+ +-------+ |
> + | ^ ^ |
> + | | | |
> + | +---------+ +---------+ +-------+ |
> + | | EIOINTC | | LIOINTC | <-- | UARTs | |
> + | +---------+ +---------+ +-------+ |
> + | ^ ^ |
> + | | | |
> + | +---------+ +---------+ |
> + | | PCH-PIC | | PCH-MSI | |
> + | +---------+ +---------+ |
> + | ^ ^ ^ |
> + | | | | |
> + | +---------+ +---------+ +---------+ |
> + | | PCH-LPC | | Devices | | Devices | |
> + | +---------+ +---------+ +---------+ |
> + | ^ |
> + | | |
> + | +---------+ |
> + | | Devices | |
> + | +---------+ |
> + | |
> + | |
> + +--------------------------------------------------------+
> +
I think for consistency with other diagrams in Documentation/, just use
literal code block, like:
diff --git a/Documentation/loongarch/irq-chip-model.rst b/Documentation/loongarch/irq-chip-model.rst
index 35c962991283ff..3cfd528021de05 100644
--- a/Documentation/loongarch/irq-chip-model.rst
+++ b/Documentation/loongarch/irq-chip-model.rst
@@ -24,40 +24,38 @@ to CPUINTC directly, CPU UARTS interrupts go to LIOINTC, while all other devices
interrupts go to PCH-PIC/PCH-LPC/PCH-MSI and gathered by HTVECINTC, and then go
to LIOINTC, and then CPUINTC.
- +---------------------------------------------+
- |:: |
- | |
- | +-----+ +---------+ +-------+ |
- | | IPI | --> | CPUINTC | <-- | Timer | |
- | +-----+ +---------+ +-------+ |
- | ^ |
- | | |
- | +---------+ +-------+ |
- | | LIOINTC | <-- | UARTs | |
- | +---------+ +-------+ |
- | ^ |
- | | |
- | +-----------+ |
- | | HTVECINTC | |
- | +-----------+ |
- | ^ ^ |
- | | | |
- | +---------+ +---------+ |
- | | PCH-PIC | | PCH-MSI | |
- | +---------+ +---------+ |
- | ^ ^ ^ |
- | | | | |
- | +---------+ +---------+ +---------+ |
- | | PCH-LPC | | Devices | | Devices | |
- | +---------+ +---------+ +---------+ |
- | ^ |
- | | |
- | +---------+ |
- | | Devices | |
- | +---------+ |
- | |
- | |
- +---------------------------------------------+
+ ::
+
+ +-----+ +---------+ +-------+
+ | IPI | --> | CPUINTC | <-- | Timer |
+ +-----+ +---------+ +-------+
+ ^
+ |
+ +---------+ +-------+
+ | LIOINTC | <-- | UARTs |
+ +---------+ +-------+
+ ^
+ |
+ +-----------+
+ | HTVECINTC |
+ +-----------+
+ ^ ^
+ | |
+ +---------+ +---------+
+ | PCH-PIC | | PCH-MSI |
+ +---------+ +---------+
+ ^ ^ ^
+ | | |
+ +---------+ +---------+ +---------+
+ | PCH-LPC | | Devices | | Devices |
+ +---------+ +---------+ +---------+
+ ^
+ |
+ +---------+
+ | Devices |
+ +---------+
+
+
Extended IRQ model
==================
@@ -67,35 +65,33 @@ to CPUINTC directly, CPU UARTS interrupts go to LIOINTC, while all other devices
interrupts go to PCH-PIC/PCH-LPC/PCH-MSI and gathered by EIOINTC, and then go to
to CPUINTC directly.
- +--------------------------------------------------------+
- |:: |
- | |
- | +-----+ +---------+ +-------+ |
- | | IPI | --> | CPUINTC | <-- | Timer | |
- | +-----+ +---------+ +-------+ |
- | ^ ^ |
- | | | |
- | +---------+ +---------+ +-------+ |
- | | EIOINTC | | LIOINTC | <-- | UARTs | |
- | +---------+ +---------+ +-------+ |
- | ^ ^ |
- | | | |
- | +---------+ +---------+ |
- | | PCH-PIC | | PCH-MSI | |
- | +---------+ +---------+ |
- | ^ ^ ^ |
- | | | | |
- | +---------+ +---------+ +---------+ |
- | | PCH-LPC | | Devices | | Devices | |
- | +---------+ +---------+ +---------+ |
- | ^ |
- | | |
- | +---------+ |
- | | Devices | |
- | +---------+ |
- | |
- | |
- +--------------------------------------------------------+
+ ::
+
+ +-----+ +---------+ +-------+
+ | IPI | --> | CPUINTC | <-- | Timer |
+ +-----+ +---------+ +-------+
+ ^ ^
+ | |
+ +---------+ +---------+ +-------+
+ | EIOINTC | | LIOINTC | <-- | UARTs |
+ +---------+ +---------+ +-------+
+ ^ ^
+ | |
+ +---------+ +---------+
+ | PCH-PIC | | PCH-MSI |
+ +---------+ +---------+
+ ^ ^ ^
+ | | |
+ +---------+ +---------+ +---------+
+ | PCH-LPC | | Devices | | Devices |
+ +---------+ +---------+ +---------+
+ ^
+ |
+ +---------+
+ | Devices |
+ +---------+
+
+
ACPI-related definitions
========================
Otherwise, htmldocs builds successfully without any new warnings related
to this patch series.
Tested-by: Bagas Sanjaya <bagasdotme@...il.com>
--
An old man doll... just what I always wanted! - Clara
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