Re: [PATCH for-5.1 V3 0/7] mips: Add Loongson-3 machine support (with KVM)

[chen huacai]

Hi, Yonggang,

We are planning to translate these manuals to English by human, but it
needs a very long time to complete.

Huacai

On Sun, May 3, 2020 at 6:42 PM 罗勇刚(Yonggang Luo) <address@hidden> wrote:
>
> The english version of the reference document is hard to head.
> I suggest first convert the chinese version into markdown or alternative 
> format and
> place them at github.
> And we then translate the document with google translate.
>
> On Sun, May 3, 2020 at 6:22 PM Huacai Chen <address@hidden> wrote:
>>
>> Loongson-3 CPU family include Loongson-3A R1/R2/R3/R4 and Loongson-3B
>> R1/R2. Loongson-3A R1 is the oldest and its ISA is the smallest, while
>> Loongson-3A R4 is the newest and its ISA is almost the superset of all
>> others. To reduce complexity, in QEMU we just define two CPU types:
>>
>> 1, "Loongson-3A1000" CPU which is corresponding to Loongson-3A R1. It is
>>    suitable for TCG because Loongson-3A R1 has fewest ASE.
>> 2, "Loongson-3A4000" CPU which is corresponding to Loongson-3A R4. It is
>>    suitable for KVM because Loongson-3A R4 has the VZ ASE.
>>
>> Loongson-3 lacks English documents. I've tried to translated them with
>> translate.google.com, and the machine translated documents (together
>> with their original Chinese versions) are available here.
>>
>> Loongson-3A R1 (Loongson-3A1000)
>> User Manual Part 1:
>> http://ftp.godson.ac.cn/lemote/3A1000_p1.pdf
>> http://ftp.godson.ac.cn/lemote/Loongson3A1000_processor_user_manual_P1.pdf 
>> (Chinese Version)
>> User Manual Part 2:
>> http://ftp.godson.ac.cn/lemote/3A1000_p2.pdf
>> http://ftp.godson.ac.cn/lemote/Loongson3A1000_processor_user_manual_P2.pdf 
>> (Chinese Version)
>>
>> Loongson-3A R2 (Loongson-3A2000)
>> User Manual Part 1:
>> http://ftp.godson.ac.cn/lemote/3A2000_p1.pdf
>> http://ftp.godson.ac.cn/lemote/Loongson3A2000_user1.pdf (Chinese Version)
>> User Manual Part 2:
>> http://ftp.godson.ac.cn/lemote/3A2000_p2.pdf
>> http://ftp.godson.ac.cn/lemote/Loongson3A2000_user2.pdf (Chinese Version)
>>
>> Loongson-3A R3 (Loongson-3A3000)
>> User Manual Part 1:
>> http://ftp.godson.ac.cn/lemote/3A3000_p1.pdf
>> http://ftp.godson.ac.cn/lemote/Loongson3A3000_3B3000usermanual1.pdf (Chinese 
>> Version)
>> User Manual Part 2:
>> http://ftp.godson.ac.cn/lemote/3A3000_p2.pdf
>> http://ftp.godson.ac.cn/lemote/Loongson3A3000_3B3000usermanual2.pdf (Chinese 
>> Version)
>>
>> Loongson-3A R4 (Loongson-3A4000)
>> User Manual Part 1:
>> http://ftp.godson.ac.cn/lemote/3A4000_p1.pdf
>> http://ftp.godson.ac.cn/lemote/3A4000user.pdf (Chinese Version)
>> User Manual Part 2:
>> I'm sorry that it is unavailable now.
>>
>> We are preparing to add QEMU's Loongson-3 support. MIPS VZ extension is
>> fully supported in Loongson-3A R4+, so we at first add QEMU/KVM support
>> in this series. And the next series will add QEMU/TCG support (it will
>> emulate Loongson-3A R1).
>>
>> We already have a full functional Linux kernel (based on Linux-5.4.x LTS
>> but not upstream yet) here:
>>
>> https://github.com/chenhuacai/linux
>>
>> How to use QEMU/Loongson-3?
>> 1, Download kernel source from the above URL;
>> 2, Build a kernel with arch/mips/configs/loongson3_{def,hpc}config;
>> 3, Boot a Loongson-3A4000 host with this kernel;
>> 4, Build QEMU-5.0.0 with this patchset;
>> 5, modprobe kvm;
>> 6, Use QEMU with TCG (available in future):
>>        qemu-system-mips64el -M loongson3,accel=tcg -cpu Loongson-3A1000 
>> -kernel <path_to_kernel> -append ...
>>    Use QEMU with KVM (available at present):
>>        qemu-system-mips64el -M loongson3,accel=kvm -cpu Loongson-3A4000 
>> -kernel <path_to_kernel> -append ...
>>
>>    The "-cpu" parameter can be omitted here and QEMU will use the correct 
>> type for TCG/KVM automatically.
>>
>> V1 -> V2:
>> 1, Add a cover letter;
>> 2, Improve CPU definitions;
>> 3, Remove LS7A-related things (Use GPEX instead);
>> 4, Add a description of how to run QEMU/Loongson-3.
>>
>> V2 -> V3:
>> 1, Fix all possible checkpatch.pl errors and warnings.
>>
>> Huacai Chen(7):
>>  configure: Add KVM target support for MIPS64
>>  hw/mips: Implement the kvm_type() hook in MachineClass
>>  hw/mips: Add CPU IRQ3 delivery for KVM
>>  target/mips: Add Loongson-3 CPU definition
>>  target/mips: Add more CP0 register for save/restor
>>  hw/mips: Add Loongson-3 machine support (with KVM)
>>  MAINTAINERS: Add myself as Loongson-3 maintainer
>>
>> Signed-off-by: Huacai Chen <address@hidden>
>> ---
>>  MAINTAINERS                          |   5 +
>>  configure                            |   2 +-
>>  default-configs/mips64el-softmmu.mak |   1 +
>>  hw/core/Makefile.objs                |   2 +-
>>  hw/core/null-machine.c               |   4 +
>>  hw/mips/Kconfig                      |  10 +
>>  hw/mips/Makefile.objs                |   3 +-
>>  hw/mips/common.c                     |  31 ++
>>  hw/mips/mips_int.c                   |   4 +-
>>  hw/mips/mips_loongson3.c             | 901 
>> +++++++++++++++++++++++++++++++++++
>>  include/hw/mips/mips.h               |   3 +
>>  target/mips/cpu.h                    |  28 ++
>>  target/mips/internal.h               |   2 +
>>  target/mips/kvm.c                    | 212 +++++++++
>>  target/mips/machine.c                |   6 +-
>>  target/mips/mips-defs.h              |   7 +-
>>  target/mips/translate.c              |   2 +
>>  target/mips/translate_init.inc.c     |  86 ++++
>>  18 files changed, 1300 insertions(+), 9 deletions(-)
>>  create mode 100644 hw/mips/common.c
>>  create mode 100644 hw/mips/mips_loongson3.c
>> --
>> 2.7.0
>>
>
>
> --
>          此致
> 礼
> 罗勇刚
> Yours
>     sincerely,
> Yonggang Luo



-- 
Huacai Chen