From: Tianyang Zhang <zhangtianyang@loongson.cn>
To: chenhuacai@kernel.org, kernel@xen0n.name, corbet@lwn.net,
alexs@kernel.org, siyanteng@loongson.cn
Cc: loongarch@lists.linux.dev, linux-doc@vger.kernel.org,
linux-kernel@vger.kernel.org,
Tianyang Zhang <zhangtianyang@loongson.cn>
Subject: [PATCH 1/2] docs: Add advanced extended IRQ model description
Date: Tue, 7 May 2024 20:22:28 +0800 [thread overview]
Message-ID: <20240507122228.5288-1-zhangtianyang@loongson.cn> (raw)
From 3C6000, Loongarch began to support advanced extended
interrupt mode, in which each CPU has an independent interrupt
vector number.This will enhance the architecture's ability
to support modern devices
Signed-off-by: Tianyang Zhang <zhangtianyang@loongson.cn>
---
.../arch/loongarch/irq-chip-model.rst | 33 +++++++++++++++++
.../zh_CN/arch/loongarch/irq-chip-model.rst | 37 +++++++++++++++++--
2 files changed, 67 insertions(+), 3 deletions(-)
diff --git a/Documentation/arch/loongarch/irq-chip-model.rst b/Documentation/arch/loongarch/irq-chip-model.rst
index 7988f4192363..79228741d1b9 100644
--- a/Documentation/arch/loongarch/irq-chip-model.rst
+++ b/Documentation/arch/loongarch/irq-chip-model.rst
@@ -85,6 +85,39 @@ to CPUINTC directly::
| Devices |
+---------+
+Advanced 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, MSI interrupts go to AVEC,
+and then go to CPUINTC, Other devices interrupts go to PCH-PIC/PCH-LPC and gathered
+by EIOINTC, and then go to CPUINTC directly::
+
+ +-----+ +--------------------------+ +-------+
+ | IPI | --> | CPUINTC | <-- | Timer |
+ +-----+ +--------------------------+ +-------+
+ ^ ^ ^
+ | | |
+ +--------+ +---------+ +---------+ +-------+
+ | AVEC | | EIOINTC | | LIOINTC | <-- | UARTs |
+ +--------+ +---------+ +---------+ +-------+
+ ^ ^
+ | |
+ +---------+ +---------+
+ | MSI | | PCH-PIC |
+ +---------+ +---------+
+ ^ ^ ^
+ | | |
+ +---------+ +---------+ +---------+
+ | 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 f1e9ab18206c..7ccde82dd666 100644
--- a/Documentation/translations/zh_CN/arch/loongarch/irq-chip-model.rst
+++ b/Documentation/translations/zh_CN/arch/loongarch/irq-chip-model.rst
@@ -9,9 +9,8 @@
LoongArch的IRQ芯片模型（层级关系）
==================================
-目前，基于LoongArch的处理器（如龙芯3A5000）只能与LS7A芯片组配合工作。LoongArch计算机
-中的中断控制器（即IRQ芯片）包括CPUINTC（CPU Core Interrupt Controller）、LIOINTC（
-Legacy I/O Interrupt Controller）、EIOINTC（Extended I/O Interrupt Controller）、
+LoongArch计算机中的中断控制器（即IRQ芯片）包括CPUINTC（CPU Core Interrupt Controller）、
+LIOINTC（Legacy I/O Interrupt Controller）、EIOINTC（Extended I/O Interrupt Controller）、
HTVECINTC（Hyper-Transport Vector Interrupt Controller）、PCH-PIC（LS7A芯片组的主中
断控制器）、PCH-LPC（LS7A芯片组的LPC中断控制器）和PCH-MSI（MSI中断控制器）。
@@ -87,6 +86,38 @@ PCH-LPC/PCH-MSI，然后被EIOINTC统一收集，再直接到达CPUINTC::
| Devices |
+---------+
+高级扩展IRQ模型
+=======================
+
+在这种模型里面，IPI（Inter-Processor Interrupt）和CPU本地时钟中断直接发送到CPUINTC，
+CPU串口（UARTs）中断发送到LIOINTC，MSI中断发送到AVEC,而后通过AVEC送达CPUINTC，而
+其他所有设备的中断则分别发送到所连接的PCH-PIC/PCH-LPC，然后由EIOINTC统一收集，再直
+接到达CPUINTC::
+
+ +-----+ +--------------------------+ +-------+
+ | IPI | --> | CPUINTC | <-- | Timer |
+ +-----+ +--------------------------+ +-------+
+ ^ ^ ^
+ | | |
+ +--------+ +---------+ +---------+ +-------+
+ | AVEC | | EIOINTC | | LIOINTC | <-- | UARTs |
+ +--------+ +---------+ +---------+ +-------+
+ ^ ^
+ | |
+ +---------+ +-------------+
+ | MSI | | PCH-PIC |
+ +---------+ +-------------+
+ ^ ^ ^
+ | | |
+ +---------+ +---------+ +---------+
+ | Devices | | PCH-LPC | | Devices |
+ +---------+ +---------+ +---------+
+ ^
+ |
+ +---------+
+ | Devices |
+ +---------+
+
ACPI相关的定义
==============
--
2.20.1
next reply other threads:[~2024-05-07 12:22 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-07 12:22 Tianyang Zhang [this message]
2024-05-08 22:29 ` [PATCH 1/2] docs: Add advanced extended IRQ model description Randy Dunlap
2024-05-13 6:40 ` Tianyang Zhang
2024-05-09 2:24 ` Dongliang Mu
2024-05-13 6:38 ` Tianyang Zhang
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