Re: [PATCH v4 01/10] vfio/fsl-mc: Add VFIO framework skeleton for fsl-mc devices
Hi Diana, On 9/4/20 3:59 PM, Diana Craciun OSS wrote: > Hi Eric, > > On 9/3/2020 5:06 PM, Auger Eric wrote: >> Hi Diana, >> >> On 8/26/20 11:33 AM, Diana Craciun wrote: >>> From: Bharat Bhushan >>> >>> DPAA2 (Data Path Acceleration Architecture) consists in >>> mechanisms for processing Ethernet packets, queue management, >>> accelerators, etc. >>> >>> The Management Complex (mc) is a hardware entity that manages the DPAA2 >>> hardware resources. It provides an object-based abstraction for software >>> drivers to use the DPAA2 hardware. The MC mediates operations such as >>> create, discover, destroy of DPAA2 objects. >>> The MC provides memory-mapped I/O command interfaces (MC portals) which >>> DPAA2 software drivers use to operate on DPAA2 objects. >>> >>> A DPRC is a container object that holds other types of DPAA2 objects. >>> Each object in the DPRC is a Linux device and bound to a driver. >>> The MC-bus driver is a platform driver (different from PCI or platform >>> bus). The DPRC driver does runtime management of a bus instance. It >>> performs the initial scan of the DPRC and handles changes in the DPRC >>> configuration (adding/removing objects). >>> >>> All objects inside a container share the same hardware isolation >>> context, meaning that only an entire DPRC can be assigned to >>> a virtual machine. >>> When a container is assigned to a virtual machine, all the objects >>> within that container are assigned to that virtual machine. >>> The DPRC container assigned to the virtual machine is not allowed >>> to change contents (add/remove objects) by the guest. The restriction >>> is set by the host and enforced by the mc hardware. >>> >>> The DPAA2 objects can be directly assigned to the guest. However >>> the MC portals (the memory mapped command interface to the MC) need >>> to be emulated because there are commands that configure the >>> interrupts and the isolation IDs which are virtual in the guest. >>> >>> Example: >>> echo vfio-fsl-mc > /sys/bus/fsl-mc/devices/dprc.2/driver_override >>> echo dprc.2 > /sys/bus/fsl-mc/drivers/vfio-fsl-mc/bind >>> >>> The dprc.2 is bound to the VFIO driver and all the objects within >>> dprc.2 are going to be bound to the VFIO driver. >>> >>> This patch adds the infrastructure for VFIO support for fsl-mc >>> devices. Subsequent patches will add support for binding and secure >>> assigning these devices using VFIO. >>> >>> More details about the DPAA2 objects can be found here: >>> Documentation/networking/device_drivers/freescale/dpaa2/overview.rst >>> >>> Signed-off-by: Bharat Bhushan >>> Signed-off-by: Diana Craciun >>> --- >>> MAINTAINERS | 6 + >>> drivers/vfio/Kconfig | 1 + >>> drivers/vfio/Makefile | 1 + >>> drivers/vfio/fsl-mc/Kconfig | 9 ++ >>> drivers/vfio/fsl-mc/Makefile | 4 + >>> drivers/vfio/fsl-mc/vfio_fsl_mc.c | 160 ++ >>> drivers/vfio/fsl-mc/vfio_fsl_mc_private.h | 14 ++ >>> include/uapi/linux/vfio.h | 1 + >>> 8 files changed, 196 insertions(+) >>> create mode 100644 drivers/vfio/fsl-mc/Kconfig >>> create mode 100644 drivers/vfio/fsl-mc/Makefile >>> create mode 100644 drivers/vfio/fsl-mc/vfio_fsl_mc.c >>> create mode 100644 drivers/vfio/fsl-mc/vfio_fsl_mc_private.h >>> >>> diff --git a/MAINTAINERS b/MAINTAINERS >>> index 3b186ade3597..f3f9ea108588 100644 >>> --- a/MAINTAINERS >>> +++ b/MAINTAINERS >>> @@ -18229,6 +18229,12 @@ F: drivers/vfio/ >>> F: include/linux/vfio.h >>> F: include/uapi/linux/vfio.h >>> +VFIO FSL-MC DRIVER >>> +M: Diana Craciun >>> +L: k...@vger.kernel.org >>> +S: Maintained >>> +F: drivers/vfio/fsl-mc/ >>> + >>> VFIO MEDIATED DEVICE DRIVERS >>> M: Kirti Wankhede >>> L: k...@vger.kernel.org >>> diff --git a/drivers/vfio/Kconfig b/drivers/vfio/Kconfig >>> index fd17db9b432f..5533df91b257 100644 >>> --- a/drivers/vfio/Kconfig >>> +++ b/drivers/vfio/Kconfig >>> @@ -47,4 +47,5 @@ menuconfig VFIO_NOIOMMU >>> source "drivers/vfio/pci/Kconfig" >>> source "drivers/vfio/platform/Kconfig" >>> source "drivers/vfio/mdev/Kconfig" >>> +source "drivers/vfio/fsl-mc/Kconfig" >>> source "virt/lib/Kconfig" >>> diff --git a/drivers/vfio/Makefile b/drivers/vfio/Makefile >>> index de67c4725cce..fee73f3d9480 100644 >>> --- a/drivers/vfio/Makefile >>> +++ b/drivers/vfio/Makefile >>> @@ -9,3 +9,4 @@ obj-$(CONFIG_VFIO_SPAPR_EEH) += vfio_spapr_eeh.o >>> obj-$(CONFIG_VFIO_PCI) += pci/ >>> obj-$(CONFIG_VFIO_PLATFORM) += platform/ >>> obj-$(CONFIG_VFIO_MDEV) += mdev/ >>> +obj-$(CONFIG_VFIO_FSL_MC) += fsl-mc/ >>> diff --git a/drivers/vfio/fsl-mc/Kconfig b/drivers/vfio/fsl-mc/Kconfig >>> new file mode 100644 >>> index ..b1a527d6b6f2 >>> --- /dev/null >>> +++ b/drivers/vfio/fsl-mc/Kconfig >>> @@ -0,0 +1,9 @@ >>> +config VFIO_FSL_MC >>> + tristate "VFIO support for QorIQ DPAA2 fsl-mc bus devices" >>> +
Re: [PATCH v4 01/10] vfio/fsl-mc: Add VFIO framework skeleton for fsl-mc devices
Hi Eric, On 9/3/2020 5:06 PM, Auger Eric wrote: Hi Diana, On 8/26/20 11:33 AM, Diana Craciun wrote: From: Bharat Bhushan DPAA2 (Data Path Acceleration Architecture) consists in mechanisms for processing Ethernet packets, queue management, accelerators, etc. The Management Complex (mc) is a hardware entity that manages the DPAA2 hardware resources. It provides an object-based abstraction for software drivers to use the DPAA2 hardware. The MC mediates operations such as create, discover, destroy of DPAA2 objects. The MC provides memory-mapped I/O command interfaces (MC portals) which DPAA2 software drivers use to operate on DPAA2 objects. A DPRC is a container object that holds other types of DPAA2 objects. Each object in the DPRC is a Linux device and bound to a driver. The MC-bus driver is a platform driver (different from PCI or platform bus). The DPRC driver does runtime management of a bus instance. It performs the initial scan of the DPRC and handles changes in the DPRC configuration (adding/removing objects). All objects inside a container share the same hardware isolation context, meaning that only an entire DPRC can be assigned to a virtual machine. When a container is assigned to a virtual machine, all the objects within that container are assigned to that virtual machine. The DPRC container assigned to the virtual machine is not allowed to change contents (add/remove objects) by the guest. The restriction is set by the host and enforced by the mc hardware. The DPAA2 objects can be directly assigned to the guest. However the MC portals (the memory mapped command interface to the MC) need to be emulated because there are commands that configure the interrupts and the isolation IDs which are virtual in the guest. Example: echo vfio-fsl-mc > /sys/bus/fsl-mc/devices/dprc.2/driver_override echo dprc.2 > /sys/bus/fsl-mc/drivers/vfio-fsl-mc/bind The dprc.2 is bound to the VFIO driver and all the objects within dprc.2 are going to be bound to the VFIO driver. This patch adds the infrastructure for VFIO support for fsl-mc devices. Subsequent patches will add support for binding and secure assigning these devices using VFIO. More details about the DPAA2 objects can be found here: Documentation/networking/device_drivers/freescale/dpaa2/overview.rst Signed-off-by: Bharat Bhushan Signed-off-by: Diana Craciun --- MAINTAINERS | 6 + drivers/vfio/Kconfig | 1 + drivers/vfio/Makefile | 1 + drivers/vfio/fsl-mc/Kconfig | 9 ++ drivers/vfio/fsl-mc/Makefile | 4 + drivers/vfio/fsl-mc/vfio_fsl_mc.c | 160 ++ drivers/vfio/fsl-mc/vfio_fsl_mc_private.h | 14 ++ include/uapi/linux/vfio.h | 1 + 8 files changed, 196 insertions(+) create mode 100644 drivers/vfio/fsl-mc/Kconfig create mode 100644 drivers/vfio/fsl-mc/Makefile create mode 100644 drivers/vfio/fsl-mc/vfio_fsl_mc.c create mode 100644 drivers/vfio/fsl-mc/vfio_fsl_mc_private.h diff --git a/MAINTAINERS b/MAINTAINERS index 3b186ade3597..f3f9ea108588 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -18229,6 +18229,12 @@ F: drivers/vfio/ F:include/linux/vfio.h F:include/uapi/linux/vfio.h +VFIO FSL-MC DRIVER +M: Diana Craciun +L: k...@vger.kernel.org +S: Maintained +F: drivers/vfio/fsl-mc/ + VFIO MEDIATED DEVICE DRIVERS M:Kirti Wankhede L:k...@vger.kernel.org diff --git a/drivers/vfio/Kconfig b/drivers/vfio/Kconfig index fd17db9b432f..5533df91b257 100644 --- a/drivers/vfio/Kconfig +++ b/drivers/vfio/Kconfig @@ -47,4 +47,5 @@ menuconfig VFIO_NOIOMMU source "drivers/vfio/pci/Kconfig" source "drivers/vfio/platform/Kconfig" source "drivers/vfio/mdev/Kconfig" +source "drivers/vfio/fsl-mc/Kconfig" source "virt/lib/Kconfig" diff --git a/drivers/vfio/Makefile b/drivers/vfio/Makefile index de67c4725cce..fee73f3d9480 100644 --- a/drivers/vfio/Makefile +++ b/drivers/vfio/Makefile @@ -9,3 +9,4 @@ obj-$(CONFIG_VFIO_SPAPR_EEH) += vfio_spapr_eeh.o obj-$(CONFIG_VFIO_PCI) += pci/ obj-$(CONFIG_VFIO_PLATFORM) += platform/ obj-$(CONFIG_VFIO_MDEV) += mdev/ +obj-$(CONFIG_VFIO_FSL_MC) += fsl-mc/ diff --git a/drivers/vfio/fsl-mc/Kconfig b/drivers/vfio/fsl-mc/Kconfig new file mode 100644 index ..b1a527d6b6f2 --- /dev/null +++ b/drivers/vfio/fsl-mc/Kconfig @@ -0,0 +1,9 @@ +config VFIO_FSL_MC + tristate "VFIO support for QorIQ DPAA2 fsl-mc bus devices" + depends on VFIO && FSL_MC_BUS && EVENTFD + help + Driver to enable support for the VFIO QorIQ DPAA2 fsl-mc + (Management Complex) devices. This is required to passthrough + fsl-mc bus devices using the VFIO framework. + + If you don't know what to do here, say N. diff --git a/drivers/vfio/fsl-mc/Makefile b/drivers/vfio/fsl-mc/Makefile new file mode 100644 index ..0c6e5d2ddaae --- /dev/null +++ b/drivers/vfio/fsl-mc/Makefile
Re: [PATCH v4 01/10] vfio/fsl-mc: Add VFIO framework skeleton for fsl-mc devices
Hi Diana, On 8/26/20 11:33 AM, Diana Craciun wrote: > From: Bharat Bhushan > > DPAA2 (Data Path Acceleration Architecture) consists in > mechanisms for processing Ethernet packets, queue management, > accelerators, etc. > > The Management Complex (mc) is a hardware entity that manages the DPAA2 > hardware resources. It provides an object-based abstraction for software > drivers to use the DPAA2 hardware. The MC mediates operations such as > create, discover, destroy of DPAA2 objects. > The MC provides memory-mapped I/O command interfaces (MC portals) which > DPAA2 software drivers use to operate on DPAA2 objects. > > A DPRC is a container object that holds other types of DPAA2 objects. > Each object in the DPRC is a Linux device and bound to a driver. > The MC-bus driver is a platform driver (different from PCI or platform > bus). The DPRC driver does runtime management of a bus instance. It > performs the initial scan of the DPRC and handles changes in the DPRC > configuration (adding/removing objects). > > All objects inside a container share the same hardware isolation > context, meaning that only an entire DPRC can be assigned to > a virtual machine. > When a container is assigned to a virtual machine, all the objects > within that container are assigned to that virtual machine. > The DPRC container assigned to the virtual machine is not allowed > to change contents (add/remove objects) by the guest. The restriction > is set by the host and enforced by the mc hardware. > > The DPAA2 objects can be directly assigned to the guest. However > the MC portals (the memory mapped command interface to the MC) need > to be emulated because there are commands that configure the > interrupts and the isolation IDs which are virtual in the guest. > > Example: > echo vfio-fsl-mc > /sys/bus/fsl-mc/devices/dprc.2/driver_override > echo dprc.2 > /sys/bus/fsl-mc/drivers/vfio-fsl-mc/bind > > The dprc.2 is bound to the VFIO driver and all the objects within > dprc.2 are going to be bound to the VFIO driver. > > This patch adds the infrastructure for VFIO support for fsl-mc > devices. Subsequent patches will add support for binding and secure > assigning these devices using VFIO. > > More details about the DPAA2 objects can be found here: > Documentation/networking/device_drivers/freescale/dpaa2/overview.rst > > Signed-off-by: Bharat Bhushan > Signed-off-by: Diana Craciun > --- > MAINTAINERS | 6 + > drivers/vfio/Kconfig | 1 + > drivers/vfio/Makefile | 1 + > drivers/vfio/fsl-mc/Kconfig | 9 ++ > drivers/vfio/fsl-mc/Makefile | 4 + > drivers/vfio/fsl-mc/vfio_fsl_mc.c | 160 ++ > drivers/vfio/fsl-mc/vfio_fsl_mc_private.h | 14 ++ > include/uapi/linux/vfio.h | 1 + > 8 files changed, 196 insertions(+) > create mode 100644 drivers/vfio/fsl-mc/Kconfig > create mode 100644 drivers/vfio/fsl-mc/Makefile > create mode 100644 drivers/vfio/fsl-mc/vfio_fsl_mc.c > create mode 100644 drivers/vfio/fsl-mc/vfio_fsl_mc_private.h > > diff --git a/MAINTAINERS b/MAINTAINERS > index 3b186ade3597..f3f9ea108588 100644 > --- a/MAINTAINERS > +++ b/MAINTAINERS > @@ -18229,6 +18229,12 @@ F: drivers/vfio/ > F: include/linux/vfio.h > F: include/uapi/linux/vfio.h > > +VFIO FSL-MC DRIVER > +M: Diana Craciun > +L: k...@vger.kernel.org > +S: Maintained > +F: drivers/vfio/fsl-mc/ > + > VFIO MEDIATED DEVICE DRIVERS > M: Kirti Wankhede > L: k...@vger.kernel.org > diff --git a/drivers/vfio/Kconfig b/drivers/vfio/Kconfig > index fd17db9b432f..5533df91b257 100644 > --- a/drivers/vfio/Kconfig > +++ b/drivers/vfio/Kconfig > @@ -47,4 +47,5 @@ menuconfig VFIO_NOIOMMU > source "drivers/vfio/pci/Kconfig" > source "drivers/vfio/platform/Kconfig" > source "drivers/vfio/mdev/Kconfig" > +source "drivers/vfio/fsl-mc/Kconfig" > source "virt/lib/Kconfig" > diff --git a/drivers/vfio/Makefile b/drivers/vfio/Makefile > index de67c4725cce..fee73f3d9480 100644 > --- a/drivers/vfio/Makefile > +++ b/drivers/vfio/Makefile > @@ -9,3 +9,4 @@ obj-$(CONFIG_VFIO_SPAPR_EEH) += vfio_spapr_eeh.o > obj-$(CONFIG_VFIO_PCI) += pci/ > obj-$(CONFIG_VFIO_PLATFORM) += platform/ > obj-$(CONFIG_VFIO_MDEV) += mdev/ > +obj-$(CONFIG_VFIO_FSL_MC) += fsl-mc/ > diff --git a/drivers/vfio/fsl-mc/Kconfig b/drivers/vfio/fsl-mc/Kconfig > new file mode 100644 > index ..b1a527d6b6f2 > --- /dev/null > +++ b/drivers/vfio/fsl-mc/Kconfig > @@ -0,0 +1,9 @@ > +config VFIO_FSL_MC > + tristate "VFIO support for QorIQ DPAA2 fsl-mc bus devices" > + depends on VFIO && FSL_MC_BUS && EVENTFD > + help > + Driver to enable support for the VFIO QorIQ DPAA2 fsl-mc > + (Management Complex) devices. This is required to passthrough > + fsl-mc bus devices using the VFIO framework. > + > + If you don't know what to do here, say N. > diff --git a/drivers/vfio/fsl-mc/Makefile
[PATCH v4 01/10] vfio/fsl-mc: Add VFIO framework skeleton for fsl-mc devices
From: Bharat Bhushan DPAA2 (Data Path Acceleration Architecture) consists in mechanisms for processing Ethernet packets, queue management, accelerators, etc. The Management Complex (mc) is a hardware entity that manages the DPAA2 hardware resources. It provides an object-based abstraction for software drivers to use the DPAA2 hardware. The MC mediates operations such as create, discover, destroy of DPAA2 objects. The MC provides memory-mapped I/O command interfaces (MC portals) which DPAA2 software drivers use to operate on DPAA2 objects. A DPRC is a container object that holds other types of DPAA2 objects. Each object in the DPRC is a Linux device and bound to a driver. The MC-bus driver is a platform driver (different from PCI or platform bus). The DPRC driver does runtime management of a bus instance. It performs the initial scan of the DPRC and handles changes in the DPRC configuration (adding/removing objects). All objects inside a container share the same hardware isolation context, meaning that only an entire DPRC can be assigned to a virtual machine. When a container is assigned to a virtual machine, all the objects within that container are assigned to that virtual machine. The DPRC container assigned to the virtual machine is not allowed to change contents (add/remove objects) by the guest. The restriction is set by the host and enforced by the mc hardware. The DPAA2 objects can be directly assigned to the guest. However the MC portals (the memory mapped command interface to the MC) need to be emulated because there are commands that configure the interrupts and the isolation IDs which are virtual in the guest. Example: echo vfio-fsl-mc > /sys/bus/fsl-mc/devices/dprc.2/driver_override echo dprc.2 > /sys/bus/fsl-mc/drivers/vfio-fsl-mc/bind The dprc.2 is bound to the VFIO driver and all the objects within dprc.2 are going to be bound to the VFIO driver. This patch adds the infrastructure for VFIO support for fsl-mc devices. Subsequent patches will add support for binding and secure assigning these devices using VFIO. More details about the DPAA2 objects can be found here: Documentation/networking/device_drivers/freescale/dpaa2/overview.rst Signed-off-by: Bharat Bhushan Signed-off-by: Diana Craciun --- MAINTAINERS | 6 + drivers/vfio/Kconfig | 1 + drivers/vfio/Makefile | 1 + drivers/vfio/fsl-mc/Kconfig | 9 ++ drivers/vfio/fsl-mc/Makefile | 4 + drivers/vfio/fsl-mc/vfio_fsl_mc.c | 160 ++ drivers/vfio/fsl-mc/vfio_fsl_mc_private.h | 14 ++ include/uapi/linux/vfio.h | 1 + 8 files changed, 196 insertions(+) create mode 100644 drivers/vfio/fsl-mc/Kconfig create mode 100644 drivers/vfio/fsl-mc/Makefile create mode 100644 drivers/vfio/fsl-mc/vfio_fsl_mc.c create mode 100644 drivers/vfio/fsl-mc/vfio_fsl_mc_private.h diff --git a/MAINTAINERS b/MAINTAINERS index 3b186ade3597..f3f9ea108588 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -18229,6 +18229,12 @@ F: drivers/vfio/ F: include/linux/vfio.h F: include/uapi/linux/vfio.h +VFIO FSL-MC DRIVER +M: Diana Craciun +L: k...@vger.kernel.org +S: Maintained +F: drivers/vfio/fsl-mc/ + VFIO MEDIATED DEVICE DRIVERS M: Kirti Wankhede L: k...@vger.kernel.org diff --git a/drivers/vfio/Kconfig b/drivers/vfio/Kconfig index fd17db9b432f..5533df91b257 100644 --- a/drivers/vfio/Kconfig +++ b/drivers/vfio/Kconfig @@ -47,4 +47,5 @@ menuconfig VFIO_NOIOMMU source "drivers/vfio/pci/Kconfig" source "drivers/vfio/platform/Kconfig" source "drivers/vfio/mdev/Kconfig" +source "drivers/vfio/fsl-mc/Kconfig" source "virt/lib/Kconfig" diff --git a/drivers/vfio/Makefile b/drivers/vfio/Makefile index de67c4725cce..fee73f3d9480 100644 --- a/drivers/vfio/Makefile +++ b/drivers/vfio/Makefile @@ -9,3 +9,4 @@ obj-$(CONFIG_VFIO_SPAPR_EEH) += vfio_spapr_eeh.o obj-$(CONFIG_VFIO_PCI) += pci/ obj-$(CONFIG_VFIO_PLATFORM) += platform/ obj-$(CONFIG_VFIO_MDEV) += mdev/ +obj-$(CONFIG_VFIO_FSL_MC) += fsl-mc/ diff --git a/drivers/vfio/fsl-mc/Kconfig b/drivers/vfio/fsl-mc/Kconfig new file mode 100644 index ..b1a527d6b6f2 --- /dev/null +++ b/drivers/vfio/fsl-mc/Kconfig @@ -0,0 +1,9 @@ +config VFIO_FSL_MC + tristate "VFIO support for QorIQ DPAA2 fsl-mc bus devices" + depends on VFIO && FSL_MC_BUS && EVENTFD + help + Driver to enable support for the VFIO QorIQ DPAA2 fsl-mc + (Management Complex) devices. This is required to passthrough + fsl-mc bus devices using the VFIO framework. + + If you don't know what to do here, say N. diff --git a/drivers/vfio/fsl-mc/Makefile b/drivers/vfio/fsl-mc/Makefile new file mode 100644 index ..0c6e5d2ddaae --- /dev/null +++ b/drivers/vfio/fsl-mc/Makefile @@ -0,0 +1,4 @@ +# SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) + +vfio-fsl-mc-y := vfio_fsl_mc.o
