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!
