Hi everyone,
This is a draft implementation of the mdev (Mediated device [1])
support in DPDK PCI bus driver. Mdev is a way to virtualize devices
in Linux kernel. Based on the device-api (mdev_type/device_api),
there could be different types of mdev devices (e.g. vfio-pci).
In this RFCv2, the PCI bus driver is extended to support scanning
and probing the mdev devices whose device-api is "vfio-pci".
+---------+
| PCI bus |
+----+----+
|
+--------+-------+-------+--------+
| | | |
Physical PCI devices ... Mediated PCI devices ...
RFCv2:
- Let PCI bus scan mediated PCI devices directly
- Address Keith's comments
- Merge below patch into this series (David)
http://patches.dpdk.org/patch/55927/
- Add internal representation of PCI device (David)
- Minor fixes and improvements
[1]
https://github.com/torvalds/linux/blob/master/Documentation/vfio-mediated-device.txt
Thanks,
Tiwei
Tiwei Bie (5):
bus/pci: introduce an internal representation of PCI device
bus/pci: avoid depending on private value in kernel source
bus/pci: introduce helper for MMIO read and write
eal: add a helper for reading string from sysfs
bus/pci: add mdev support
drivers/bus/pci/bsd/pci.c | 36 ++-
drivers/bus/pci/linux/Makefile | 1 +
drivers/bus/pci/linux/pci.c | 105 ++++++--
drivers/bus/pci/linux/pci_init.h | 29 ++-
drivers/bus/pci/linux/pci_uio.c | 22 ++
drivers/bus/pci/linux/pci_vfio.c | 314 ++++++++++++++++++++----
drivers/bus/pci/linux/pci_vfio_mdev.c | 236 ++++++++++++++++++
drivers/bus/pci/meson.build | 3 +-
drivers/bus/pci/pci_common.c | 31 +--
drivers/bus/pci/private.h | 22 ++
drivers/bus/pci/rte_bus_pci.h | 65 ++++-
drivers/bus/pci/rte_bus_pci_version.map | 7 +
lib/librte_eal/common/eal_filesystem.h | 10 +
lib/librte_eal/freebsd/eal/eal.c | 22 ++
lib/librte_eal/linux/eal/eal.c | 39 ++-
lib/librte_eal/rte_eal_version.map | 1 +
16 files changed, 838 insertions(+), 105 deletions(-)
create mode 100644 drivers/bus/pci/linux/pci_vfio_mdev.c
--
2.17.1
