Hello,
The SMMU drivers has diverged from Linux. Having our own driver doesn't make
any benefits and make difficult to backport fixes and/or porting features such
as PCI.
With this series, the code of the SMMU drivers (copied from Linux) is mostly
not modified. If it's the case a comment /* Xen: ... */ has been added to
explain why.
To make the change obvious the resync of the SMMU code is made in several step
1) Revert the current SMMU driver (patch #5)
2) Import as it is the driver from Linux (patch #9)
3) Apply 2 fixes which are useful to correctly use the SATA with SMMU on
calxeda. I don't know why Linux didn't yet applied (patch #10-11)
4) Chanes for Xen (patch #12)
I also took the opportunity of the resync to consolidate the iommu ops in a
single set. When I added the IOMMU set to handle platform device passthrough (
ops assing_dt_device and reassign_dt_device), I didn't think about merging the
ops with the PCI one. In fact Linux is using a single set and have only few
lines per driver specific to each set (PCI or platform device).
A branch is available with all the changes:
git::/xenbits.xen.org/people/julieng/xen-unstable.git branch smmu-rework-v2
Major changes in v2:
- Introduce the generic struct to describe device on ARM. Alias it
to pci_dev on x86
- Defer the introduction of PCI in the generic device later
Regards,
Andreas Herrmann (2):
xen/iommu: smmu: Check for duplicate stream IDs when registering
master devices
xen/iommu: smmu: Introduce automatic stream-id-masking
Julien Grall (10):
xen/arm: gic-v2: Change the device name in DT_DEVICE_START
xen/arm: vgic: Drop unecessary include asm/device.h
xen/dt: Extend dt_device_match to possibly store data
xen/arm: device: Rename device_type into device_match
xen/iommu: arm: Remove temporary the SMMU driver
xen/arm: Introduce a generic way to describe device
xen/iommu: Consolidate device assignment ops into a single set
xen/arm: Describe device supported by a driver with dt_match_node
xen/iommu: arm: Import the SMMU driver from Linux
xen/iommu: smmu: Add Xen specific code to be able to use the driver
xen/arch/arm/device.c | 25 +-
xen/arch/arm/gic-v2.c | 12 +-
xen/arch/arm/gic-v3.c | 8 +-
xen/arch/arm/platform.c | 2 +-
xen/arch/arm/vgic-v2.c | 1 -
xen/arch/arm/vgic-v3.c | 1 -
xen/common/device.c | 21 +
xen/common/device_tree.c | 15 +-
xen/drivers/char/exynos4210-uart.c | 8 +-
xen/drivers/char/ns16550.c | 12 +-
xen/drivers/char/omap-uart.c | 8 +-
xen/drivers/char/pl011.c | 8 +-
xen/drivers/passthrough/arm/smmu.c | 4115 +++++++++++++++++++++------------
xen/drivers/passthrough/device_tree.c | 5 +-
xen/drivers/passthrough/pci.c | 20 +-
xen/include/asm-arm/device.h | 38 +-
xen/include/asm-arm/gic.h | 15 +-
xen/include/asm-x86/device.h | 25 +
xen/include/xen/device_tree.h | 19 +-
xen/include/xen/iommu.h | 18 +-
xen/include/xen/pci.h | 1 +
21 files changed, 2781 insertions(+), 1596 deletions(-)
create mode 100644 xen/common/device.c
create mode 100644 xen/include/asm-x86/device.h
--
2.1.4
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel
