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From: Jean-Philippe Brucker <jean-philippe@linaro.org>
To: iommu@lists.linux-foundation.org,
	virtualization@lists.linux-foundation.org,
	linux-pci@vger.kernel.org
Cc: Jean-Philippe Brucker <jean-philippe@linaro.org>,
	kevin.tian@intel.com, mst@redhat.com, sebastien.boeuf@intel.com,
	jacob.jun.pan@intel.com, bhelgaas@google.com,
	robin.murphy@arm.com, jasowang@redhat.com
Subject: [PATCH v2 0/3] virtio-iommu on x86 and non-devicetree platforms
Date: Fri, 28 Feb 2020 18:25:35 +0100
Message-ID: <20200228172537.377327-1-jean-philippe@linaro.org> (raw)

Add a topology description to the virtio-iommu driver and enable x86
platforms.

Two minor changes since v1 [1]:
* Don't setup DMA twice in patch 1
* Clarify the CONFIG_IOMMU_DMA selection in patch 3

And rebased on top of "iommu/virtio: Build virtio-iommu as a module"
which Joerg picked up for v5.7.

--- Copy-paste from v1:
The built-in description is an array in the virtio config space. The
driver parses the config space early and postpones endpoint probe until
the virtio-iommu device is ready. Each element in the array describes
either a PCI range or a single MMIO endpoint, and their associated
endpoint IDs:

struct virtio_iommu_topo_pci_range {
	__le16 type;			/* 1: PCI range */
	__le16 hierarchy;		/* PCI domain number */
	__le16 requester_start;		/* First BDF */
	__le16 requester_end;		/* Last BDF */
	__le32 endpoint_start;		/* First endpoint ID */
};

struct virtio_iommu_topo_endpoint {
	__le16 type;			/* 2: Endpoint */
	__le16 reserved;		/* 0 */
	__le32 endpoint;		/* Endpoint ID */
	__le64 address;			/* First MMIO address */
};

You can find the QEMU patches based on Eric's latest device on my
virtio-iommu/devel branch [2]. I test on both x86 q35, and aarch64 virt
machine with edk2.
---

[1] https://lore.kernel.org/linux-iommu/20200214160413.1475396-1-jean-philippe@linaro.org/
[2] https://jpbrucker.net/git/qemu virtio-iommu/devel

Jean-Philippe Brucker (3):
  iommu/virtio: Add topology description to virtio-iommu config space
  PCI: Add DMA configuration for virtual platforms
  iommu/virtio: Enable x86 support

 MAINTAINERS                           |   2 +
 drivers/iommu/Kconfig                 |  13 +-
 drivers/iommu/Makefile                |   1 +
 drivers/iommu/virtio-iommu-topology.c | 343 ++++++++++++++++++++++++++
 drivers/iommu/virtio-iommu.c          |   3 +
 drivers/pci/pci-driver.c              |   5 +
 include/linux/virt_iommu.h            |  19 ++
 include/uapi/linux/virtio_iommu.h     |  26 ++
 8 files changed, 411 insertions(+), 1 deletion(-)
 create mode 100644 drivers/iommu/virtio-iommu-topology.c
 create mode 100644 include/linux/virt_iommu.h

-- 
2.25.0

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Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-28 17:25 Jean-Philippe Brucker [this message]
2020-02-28 17:25 ` [PATCH v2 1/3] iommu/virtio: Add topology description to virtio-iommu config space Jean-Philippe Brucker
2020-03-01 11:17   ` Michael S. Tsirkin
2020-03-02 16:16   ` Joerg Roedel
2020-03-03 10:19     ` Auger Eric
2020-03-03 13:01       ` Joerg Roedel
2020-03-03 14:00         ` Michael S. Tsirkin
2020-03-03 15:53           ` Joerg Roedel
2020-03-03 16:09             ` Michael S. Tsirkin
2020-03-03 16:21               ` Auger Eric
2020-03-04 13:37               ` Joerg Roedel
2020-03-04 15:38                 ` Jean-Philippe Brucker
2020-03-04 17:40                   ` Joerg Roedel
2020-03-04 21:37                     ` Jacob Pan (Jun)
2020-03-04 21:54                       ` Joerg Roedel
2020-03-05 15:42                         ` Michael S. Tsirkin
2020-03-04 15:48                 ` Jacob Pan
2020-03-04 17:34                   ` Joerg Roedel
2020-03-04 19:34                 ` Michael S. Tsirkin
2020-03-04 21:50                   ` Joerg Roedel
2020-03-05 15:39                     ` Michael S. Tsirkin
2020-03-03 14:02     ` Michael S. Tsirkin
2020-03-05  8:07   ` Tian, Kevin
2020-03-11 17:48     ` Jean-Philippe Brucker
2020-03-11 21:48       ` Michael S. Tsirkin
2020-04-13 13:22   ` Michael S. Tsirkin
2020-04-21  7:31   ` Tian, Kevin
2020-08-21  8:39     ` Jean-Philippe Brucker
2020-02-28 17:25 ` [PATCH v2 2/3] PCI: Add DMA configuration for virtual platforms Jean-Philippe Brucker
2020-03-18 21:10   ` Bjorn Helgaas
2020-02-28 17:25 ` [PATCH v2 3/3] iommu/virtio: Enable x86 support Jean-Philippe Brucker
2020-02-29 14:23   ` kbuild test robot

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