Hi everyone,
Are there any comments on this patch series? If not, Is there anything keeping this series from getting merged upstream?
Thanks,Are there any comments on this patch series? If not, Is there anything keeping this series from getting merged upstream?
On Fri, Jan 30, 2015 at 2:46 PM, Baptiste Reynal <b.reynal@xxxxxxxxxxxxxxxxxxxxxx> wrote:
This patch series aims to implement VFIO support for platform devices that
reside behind an IOMMU. Examples of such devices are devices behind an ARM
SMMU, or behind a Samsung Exynos System MMU.
The API used is based on the existing VFIO API that is also used with PCI
devices. Only devices that include a basic set of IRQs and memory regions are
targeted; devices with complex relationships with other devices on a device
tree are not taken into account at this stage.
This patch series may be applied on the following series/patches:
- [PATCH v3 0/6] vfio: type1: support for ARM SMMUS with VFIO_IOMMU_TYPE1
A copy can be cloned from the branch vfio-platform-v13 at:
git@xxxxxxxxxx:virtualopensystems/linux-kvm-arm.git
Changes since v12:
- Reorder chunks to be bisect-able
Changes since v11:
- Drop support for ARM AMBA devices
- vfio_platform_private.h is now self-contained
- Fix masked IRQ initialization
Changes since v10:
- Check if interrupt is already masked when setting a new trigger
- Fixed kasprintf with unchecked return value in VFIO AMBA driver
Changes since v9:
- Reworked the splitting of the patches that decouple virqfd from PCI
- Some styling issues and typos
- Removed superfluous includes
- AMBA devices are now named vfio-amba- suffixed by the AMBA device id
- Several other cleanups and fixes
Changes since v8:
- Separate irq handler for edge and level triggered interrupts
- Mutex based lock for VFIO fd open/release
- Fixed bug where the first region of a platform device wasn't exposed
- Read only regions can be MMAPed only read only
- Code cleanups
Changes since v7:
- Some initial placeholder functionality for PIO resources
- Cleaned up code for IRQ triggering, masking and unmasking
- Some functionality has been removed from this series and posted separately:
- VFIO_IOMMU_TYPE1 support for ARM SMMUs
- IOMMU NOEXEC patches
- driver_override functionality for AMBA devices
- Several fixes
Changes since v6:
- Integrated support for AMBA devices
- Numerous cleanups and fixes
Changes since v5:
- Full eventfd support for IRQ masking and unmasking.
- Changed IOMMU_EXEC to IOMMU_NOEXEC, along with related flags in VFIO.
- Other fixes based on reviewer comments.
Changes since v4:
- Use static offsets for each region in the VFIO device fd
- Include patch in the series for the ARM SMMU to expose IOMMU_EXEC
availability via IOMMU_CAP_DMA_EXEC
- Rebased on VFIO multi domain support:
- IOMMU_EXEC is now available if at least one IOMMU in the container
supports it
- Expose IOMMU_EXEC if available via the capability VFIO_IOMMU_PROT_EXEC
- Some bug fixes
Changes since v3:
- Use Kim Phillips' driver_probe_device()
Changes since v2:
- Fixed Read/Write and MMAP on device regions
- Removed dependency on Device Tree
- Interrupts support
- Interrupt masking/unmasking
- Automask level sensitive interrupts
- Introduced VFIO_DMA_MAP_FLAG_EXEC
- Code clean ups
Antonios Motakis (18):
vfio/platform: initial skeleton of VFIO support for platform devices
vfio: platform: probe to devices on the platform bus
vfio: platform: add the VFIO PLATFORM module to Kconfig
vfio/platform: return info for bound device
vfio/platform: return info for device memory mapped IO regions
vfio/platform: read and write support for the device fd
vfio/platform: support MMAP of MMIO regions
vfio/platform: return IRQ info
vfio/platform: initial interrupts support code
vfio/platform: trigger an interrupt via eventfd
vfio/platform: support for level sensitive interrupts
vfio: add a vfio_ prefix to virqfd_enable and virqfd_disable and
export
vfio: virqfd: rename vfio_pci_virqfd_init and vfio_pci_virqfd_exit
vfio: add local lock for virqfd instead of depending on VFIO PCI
vfio: pass an opaque pointer on virqfd initialization
vfio: move eventfd support code for VFIO_PCI to a separate file
vfio: initialize the virqfd workqueue in VFIO generic code
vfio/platform: implement IRQ masking/unmasking via an eventfd
drivers/vfio/Kconfig | 1 +
drivers/vfio/Makefile | 5 +-
drivers/vfio/pci/vfio_pci.c | 8 -
drivers/vfio/pci/vfio_pci_intrs.c | 238 +-----------
drivers/vfio/pci/vfio_pci_private.h | 3 -
drivers/vfio/platform/Kconfig | 9 +
drivers/vfio/platform/Makefile | 4 +
drivers/vfio/platform/vfio_platform.c | 103 +++++
drivers/vfio/platform/vfio_platform_common.c | 521 ++++++++++++++++++++++++++
drivers/vfio/platform/vfio_platform_irq.c | 336 +++++++++++++++++
drivers/vfio/platform/vfio_platform_private.h | 85 +++++
drivers/vfio/vfio.c | 8 +
drivers/vfio/virqfd.c | 213 +++++++++++
include/linux/vfio.h | 27 ++
include/uapi/linux/vfio.h | 1 +
15 files changed, 1326 insertions(+), 236 deletions(-)
create mode 100644 drivers/vfio/platform/Kconfig
create mode 100644 drivers/vfio/platform/Makefile
create mode 100644 drivers/vfio/platform/vfio_platform.c
create mode 100644 drivers/vfio/platform/vfio_platform_common.c
create mode 100644 drivers/vfio/platform/vfio_platform_irq.c
create mode 100644 drivers/vfio/platform/vfio_platform_private.h
create mode 100644 drivers/vfio/virqfd.c
--
2.2.2
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