common/sfc_efx/base: support selecting RSS table entry count

On Riverhead boards, the client can control how many entries
to have in the indirection table of an exclusive RSS context.

Provide the n

common/sfc_efx/base: support selecting RSS table entry count

On Riverhead boards, the client can control how many entries
to have in the indirection table of an exclusive RSS context.

Provide the new parameter to clients and indicate its bounds.
Extend the API for writing the table to have the flexibility.

Signed-off-by: Ivan Malov <ivan.malov@oktetlabs.ru>
Reviewed-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
Reviewed-by: Andy Moreton <amoreton@xilinx.com>

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common/sfc_efx/base: refactor RSS table entry count name

In the existing code, "n" is hardly a clear name for that.
Use a clearer name to help future maintainers of the code.

Signed-off-by: Ivan Ma

common/sfc_efx/base: refactor RSS table entry count name

In the existing code, "n" is hardly a clear name for that.
Use a clearer name to help future maintainers of the code.

Signed-off-by: Ivan Malov <ivan.malov@oktetlabs.ru>
Reviewed-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
Reviewed-by: Andy Moreton <amoreton@xilinx.com>

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common/sfc_efx/base: support custom EvQ to IRQ mapping

Custom mapping is actually supported for EF10 and EF100 families only.

A driver (e.g. DPDK PMD) may require to customize mapping of EvQ
to int

common/sfc_efx/base: support custom EvQ to IRQ mapping

Custom mapping is actually supported for EF10 and EF100 families only.

A driver (e.g. DPDK PMD) may require to customize mapping of EvQ
to interrupts if, for example, extra EvQ are used for house-keeping
in polling or wake up (via another EvQ) mode.

Signed-off-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
Reviewed-by: Andy Moreton <amoreton@xilinx.com>

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common/sfc_efx/base: support verifying virtio features

Add an API to verify virtio features supported by device.

Signed-off-by: Vijay Kumar Srivastava <vsrivast@xilinx.com>
Signed-off-by: Andrew Ry

common/sfc_efx/base: support verifying virtio features

Add an API to verify virtio features supported by device.

Signed-off-by: Vijay Kumar Srivastava <vsrivast@xilinx.com>
Signed-off-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>

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common/sfc_efx/base: support getting virtio features

Add an API to get virtio features supported by device.

Signed-off-by: Vijay Kumar Srivastava <vsrivast@xilinx.com>
Signed-off-by: Andrew Rybchen

common/sfc_efx/base: support getting virtio features

Add an API to get virtio features supported by device.

Signed-off-by: Vijay Kumar Srivastava <vsrivast@xilinx.com>
Signed-off-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>

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common/sfc_efx/base: support getting virtq doorbell offset

Add an API to query the virtqueue doorbell offset in the BAR for a VI.
For vDPA, the virtio net driver notifies the device directly by writ

common/sfc_efx/base: support getting virtq doorbell offset

Add an API to query the virtqueue doorbell offset in the BAR for a VI.
For vDPA, the virtio net driver notifies the device directly by writing
doorbell. This API would be invoked from vDPA client driver.

Signed-off-by: Vijay Srivastava <vijays@solarflare.com>
Signed-off-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>

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common/sfc_efx/base: add base virtio support for vDPA

In the vDPA mode, only data path is offloaded in the hardware and
control path still goes through the hypervisor and it configures
virtqueues vi

common/sfc_efx/base: add base virtio support for vDPA

In the vDPA mode, only data path is offloaded in the hardware and
control path still goes through the hypervisor and it configures
virtqueues via vDPA driver so new virtqueue APIs are required.

Implement virtio init/fini and virtqueue create/destroy APIs.

Signed-off-by: Vijay Srivastava <vijays@solarflare.com>
Signed-off-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>

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common/sfc_efx: update copyright year

Bump copyright year to 2021.

Signed-off-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>

common/sfc_efx/base: support creation of extended width EvQ

Add a flag to request an extended width event queue, and
check that the supplied buffer is large enough to hold the
event queue descriptor

common/sfc_efx/base: support creation of extended width EvQ

Add a flag to request an extended width event queue, and
check that the supplied buffer is large enough to hold the
event queue descriptors.

Signed-off-by: Andy Moreton <amoreton@xilinx.com>
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>

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common/sfc_efx/base: replace PCI efsys macros with functions

efsys macros that manipulate PCI devices cannot be defined in
common sfc_efx DPDK driver since in DPDK build the bus drivers
that provide

common/sfc_efx/base: replace PCI efsys macros with functions

efsys macros that manipulate PCI devices cannot be defined in
common sfc_efx DPDK driver since in DPDK build the bus drivers
that provide required functionality are built after common drivers.

Replace the macros with function callbacks to remove that build
dependency. Drivers now should pass the callbacks directly to
efx function instead of defining implementation in efsys.

Signed-off-by: Igor Romanov <igor.romanov@oktetlabs.ru>
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Andy Moreton <amoreton@xilinx.com>

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common/sfc_efx/base: support UDP tunnel operations for EF100

EF100 uses VNIC encapsulation rule MCDI for configuring UDP
tunnels in HW individually. Use busy added and removed states
of UDP tunnel t

common/sfc_efx/base: support UDP tunnel operations for EF100

EF100 uses VNIC encapsulation rule MCDI for configuring UDP
tunnels in HW individually. Use busy added and removed states
of UDP tunnel table entries for the implementation.

Signed-off-by: Igor Romanov <igor.romanov@oktetlabs.ru>
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Andy Moreton <amoreton@xilinx.com>

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common/sfc_efx/base: add Xilinx capabilities table lookup

APIs for searching a capability in a Xilinx capabilities table and
reading table entries are needed for function control window lookup
to ge

common/sfc_efx/base: add Xilinx capabilities table lookup

APIs for searching a capability in a Xilinx capabilities table and
reading table entries are needed for function control window lookup
to get the bar index and offset of the window.

Signed-off-by: Igor Romanov <igor.romanov@oktetlabs.ru>
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Andy Moreton <amoreton@xilinx.com>

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common/sfc_efx/base: add function control window lookup API

Riverhead NIC may provide a locator of function control window
(EF100 resource locator).
The locator may be present in a Xilinx capabiliti

common/sfc_efx/base: add function control window lookup API

Riverhead NIC may provide a locator of function control window
(EF100 resource locator).
The locator may be present in a Xilinx capabilities table which
itself is located by looking into extended PCI capabilities.

PCI capabilities are made possible to access by adding PCI config
space interface to efsys.

APIs are implemented to facilitate function control window lookup:
- API to find an extended PCI capability given a capability ID;
- API to read Xilinx PCI capability;

Signed-off-by: Igor Romanov <igor.romanov@oktetlabs.ru>
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Andy Moreton <amoreton@xilinx.com>

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common/sfc_efx/base: implement Tx control path for Riverhead

Tx control path on Riverhead is very similar to EF10, but datapath
differs a lot since Tx descriptor size is 16 bytes (vs 8 bytes on EF10

common/sfc_efx/base: implement Tx control path for Riverhead

Tx control path on Riverhead is very similar to EF10, but datapath
differs a lot since Tx descriptor size is 16 bytes (vs 8 bytes on EF10).

Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Andy Moreton <amoreton@xilinx.com>

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common/sfc_efx/base: implement Rx control path for Riverhead

Reuse EF10 RSS-related functions since current version of the RSS
interface is compatible with EF10.

Implement own functions to create a

common/sfc_efx/base: implement Rx control path for Riverhead

Reuse EF10 RSS-related functions since current version of the RSS
interface is compatible with EF10.

Implement own functions to create and destroy Rx queues which reuse
MCDI wrappers which are shared with EF10.

Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Andy Moreton <amoreton@xilinx.com>

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common/sfc_efx/base: add event queue module for Riverhead

Events are significantly reworked on Riverhead, so it is better
to implement own set of callbacks to simplify future development
and avoid i

common/sfc_efx/base: add event queue module for Riverhead

Events are significantly reworked on Riverhead, so it is better
to implement own set of callbacks to simplify future development
and avoid inheritance of legacy code.

Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Andy Moreton <amoreton@xilinx.com>

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common/sfc_efx/base: add interrupts module for Riverhead

Riverhead supports interrupt aggregation rings. Right now there
are no plans to support it in libefx, but it is better to have
own set of cal

common/sfc_efx/base: add interrupts module for Riverhead

Riverhead supports interrupt aggregation rings. Right now there
are no plans to support it in libefx, but it is better to have
own set of callbacks to easier handle EF10 and Riverhead
differences in the future.

Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Andy Moreton <amoreton@xilinx.com>

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common/sfc_efx/base: add Riverhead support to NIC module

Define basic NIC features and limitations.

Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Andy Moreton <amoreton@x

common/sfc_efx/base: add Riverhead support to NIC module

Define basic NIC features and limitations.

Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Andy Moreton <amoreton@xilinx.com>
Reviewed-by: Vijay Kumar Srivastava <vsrivast@xilinx.com>

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