在 2021/6/28 下午6:55, Huacai Chen 写道:
Hi, Jiaxun,
On Mon, Jun 28, 2021 at 6:41 PM Jiaxun Yang <jiaxun.yang@xxxxxxxxxxx> wrote:
在 2021/6/28 下午6:38, Huacai Chen 写道:
Hi, Jiaxun,
On Mon, Jun 28, 2021 at 6:13 PM Jiaxun Yang <jiaxun.yang@xxxxxxxxxxx> wrote:
在 2021/6/28 下午6:10, Huacai Chen 写道:
Loongson PCH (LS7A chipset) will be used by both MIPS-based and
LoongArch-based Loongson processors. MIPS-based Loongson uses FDT
but LoongArch-base Loongson uses ACPI, but the driver in drivers/
pci/controller/pci-loongson.c is FDT-only. So move the quirks to
quirks.c where can be shared by all architectures.
LoongArch is a new RISC ISA, mainline support will come soon, and
documentations are here (in translation):
https://github.com/loongson/LoongArch-Documentation
Probably you should guard it with CONFIG_MACH_LOONGSON64 now and add
CONFIG_LOONGARCH
once LOONGARCH code is mainlined.
These quirks won't match non-Loongson platforms (because they are
matched by pci ids), so I think that is unnecessary.
Are you sure?
As I saw
+DECLARE_PCI_FIXUP_ENABLE(PCI_ANY_ID, PCI_ANY_ID
It will slow down boot progress on all systems.
This ANY ID matching is only used by loongson_mrrs_quirk(), but the
next patch will rework loongson_mrrs_quirk().
Oh I see. That seems better.
Thanks.
- Jiaxun
Huacai
