Re: [PATCH v4 0/2] Loongarch irq-redirect supprot

Tianyang Zhang <zhangtianyang@xxxxxxxxxxx> · Tue, 10 Jun 2025 20:07:15 +0800

Hi, Huacai

在 2025/6/10 下午7:54, Huacai Chen 写道:
Hi, Tianyang,

Have you received my comments in V3?
https://lore.kernel.org/loongarch/20250523101833.17940-1-zhangtianyang@xxxxxxxxxxx/T/#m2883f379ce7eb663f3f3eb4736bf9b071c7fd8ab

Huacai

Sorry, except for a slight network issue, I did not receive the email 
mentioned above.

I will reply to the email first and continue to modify this series of 
patches

Tianyang

On Tue, Jun 10, 2025 at 7:43 PM Tianyang Zhang
<zhangtianyang@xxxxxxxxxxx> wrote:
From: Super User <root@localhost.localdomain>

This series of patches introduces support for interrupt-redirect
controllers, and this hardware feature will be supported on 3C6000
for the first time

change log:
         v0->v1:
         1.Rename the model names in the document.
         2.Adjust the code format.
         3.Remove architecture - specific prefixes.
         4.Refactor the initialization logic, and IR driver no longer set AVEC_ENABLE.
         5.Enhance compatibility under certain configurations.

         v1->v2:
         1.Fixed an erroneous enabling issue.

         v2->v3
         1.Replace smp_call with address mapping to access registers
         2.Fix some code style issues

         v3->v4
         1.Provide reasonable comments on the modifications made to IRQ_SET_MASK_OK_DONE
         2.Replace meaningless empty functions with parent_mask/unmask/ack
         3.Added and indeed released resources
         4.Added judgment for data structure initialization completion to avoid duplicate creation during cpuhotplug
         5.Fixed the code style and some unnecessary troubles

Tianyang Zhang (2):
   Docs/LoongArch: Add Advanced Extended-Redirect IRQ model description
   irq/irq-loongarch-ir:Add Redirect irqchip support

  .../arch/loongarch/irq-chip-model.rst         |  38 ++
  .../zh_CN/arch/loongarch/irq-chip-model.rst   |  37 ++
  arch/loongarch/include/asm/cpu-features.h     |   1 +
  arch/loongarch/include/asm/cpu.h              |   2 +
  arch/loongarch/include/asm/loongarch.h        |   6 +
  arch/loongarch/kernel/cpu-probe.c             |   2 +
  drivers/irqchip/Makefile                      |   2 +-
  drivers/irqchip/irq-loongarch-avec.c          |  25 +-
  drivers/irqchip/irq-loongarch-ir.c            | 562 ++++++++++++++++++
  drivers/irqchip/irq-loongson.h                |  12 +
  include/linux/cpuhotplug.h                    |   1 +
  11 files changed, 674 insertions(+), 14 deletions(-)
  create mode 100644 drivers/irqchip/irq-loongarch-ir.c

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2.41.0