Re: [PATCH v5 0/3] PCI: Add a quirk to enable SVA for HiSilicon chip

[Zhangfei Gao]

On 2021/8/27 上午3:30, Bjorn Helgaas wrote:
> On Tue, Jul 13, 2021 at 10:54:33AM +0800, Zhangfei Gao wrote:
> > HiSilicon KunPeng920 and KunPeng930 have devices appear as PCI but are
> > actually on the AMBA bus. These fake PCI devices have PASID capability
> > though not supporting TLP.
> >
> > Add a quirk to set pasid_no_tlp and dma-can-stall for these devices.
> >
> > v5:
> > no change, base on 5.14-rc1
> >
> > v4:
> > Applied to Linux 5.13-rc2, and build successfully with only these three patches.
> >
> > v3:
> > https://lore.kernel.org/linux-pci/1615258837-12189-1-git-send-email-zhangfei.gao@xxxxxxxxxx/
> > Rebase to Linux 5.12-rc1
> > Change commit msg adding:
> > Property dma-can-stall depends on patchset
> > https://lore.kernel.org/linux-iommu/20210302092644.2553014-1-jean-philippe@xxxxxxxxxx/
> >
> > By the way the patchset can directly applied on 5.12-rc1 and build successfully though
> > without the dependent patchset.
> >
> > v2:
> > Add a new pci_dev bit: pasid_no_tlp, suggested by Bjorn
> > "Apparently these devices have a PASID capability.  I think you should
> > add a new pci_dev bit that is specific to this idea of "PASID works
> > without TLP prefixes" and then change pci_enable_pasid() to look at
> > that bit as well as eetlp_prefix_path."
> > https://lore.kernel.org/linux-pci/20210112170230.GA1838341@bjorn-Precision-5520/
> >
> > Zhangfei Gao (3):
> >    PCI: PASID can be enabled without TLP prefix
> >    PCI: Add a quirk to set pasid_no_tlp for HiSilicon chips
> >    PCI: Set dma-can-stall for HiSilicon chips
> >
> >   drivers/pci/ats.c    |  2 +-
> >   drivers/pci/quirks.c | 27 +++++++++++++++++++++++++++
> >   include/linux/pci.h  |  1 +
> >   3 files changed, 29 insertions(+), 1 deletion(-)
> Applied with Robin's ack to pci/iommu for v5.15, thanks!
Great, thanks  Bjorn and Robin.