From: Zhangfei Gao <zhangfei.gao@linaro.org>
To: Bjorn Helgaas <bhelgaas@google.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Arnd Bergmann <arnd@arndb.de>,
jean-philippe <jean-philippe@linaro.org>,
kenneth-lee-2012@foxmail.com, Wangzhou <wangzhou1@hisilicon.com>,
kw@linux.com
Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
Zhangfei Gao <zhangfei.gao@linaro.org>
Subject: [PATCH v3 0/3] PCI: Add a quirk to enable SVA for HiSilicon chip
Date: Tue, 9 Mar 2021 11:00:34 +0800 [thread overview]
Message-ID: <1615258837-12189-1-git-send-email-zhangfei.gao@linaro.org> (raw)
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.
v3:
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@linaro.org/
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(-)
--
2.9.5
next reply other threads:[~2021-03-09 3:01 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-09 3:00 Zhangfei Gao [this message]
2021-03-09 3:00 ` [PATCH v3 1/3] PCI: PASID can be enabled without TLP prefix Zhangfei Gao
2021-03-09 3:00 ` [PATCH v3 2/3] PCI: Add a quirk to set pasid_no_tlp for HiSilicon chips Zhangfei Gao
2021-03-09 3:00 ` [PATCH v3 3/3] PCI: Set dma-can-stall " Zhangfei Gao
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