new file mode 100644
@@ -0,0 +1,159 @@
+.. SPDX-License-Identifier: GPL-2.0+
+
+========================================================
+Linux Driver for the Pensando(R) DSC adapter family
+========================================================
+
+Pensando Linux Core driver
+Copyright(c) 2022 Pensando Systems, Inc
+
+Identifying the Adapter
+=======================
+
+To find if one or more Pensando PCI Core devices are installed on the
+host, check for the PCI devices::
+
+ # lspci -d 1dd8:100c
+ 39:00.0 Processing accelerators: Pensando Systems Device 100c
+ 3a:00.0 Processing accelerators: Pensando Systems Device 100c
+
+If such devices are listed as above, then the pds_core.ko driver should find
+and configure them for use. There should be log entries in the kernel
+messages such as these::
+
+ $ dmesg | grep pds_core
+ pds_core 0000:b5:00.0: 126.016 Gb/s available PCIe bandwidth (8.0 GT/s PCIe x16 link)
+ pds_core 0000:b5:00.0: FW: 1.51.0-73
+ pds_core 0000:b6:00.0: 126.016 Gb/s available PCIe bandwidth (8.0 GT/s PCIe x16 link)
+ pds_core 0000:b5:00.0: FW: 1.51.0-73
+
+Driver and firmware version information can be gathered with devlink::
+
+ $ devlink dev info pci/0000:b5:00.0
+ pci/0000:b5:00.0:
+ driver pds_core
+ serial_number FLM18420073
+ versions:
+ fixed:
+ asic.id 0x0
+ asic.rev 0x0
+ running:
+ fw 1.51.0-73
+ stored:
+ fw.goldfw 1.15.9-C-22
+ fw.mainfwa 1.51.0-73
+ fw.mainfwb 1.51.0-57
+
+
+Info versions
+=============
+
+The ``pds_core`` driver reports the following versions
+
+.. list-table:: devlink info versions implemented
+ :widths: 5 5 90
+
+ * - Name
+ - Type
+ - Description
+ * - ``fw``
+ - running
+ - Version of firmware running on the device
+ * - ``fw.goldfw``
+ - stored
+ - Version of firmware stored in the goldfw slot
+ * - ``fw.mainfwa``
+ - stored
+ - Version of firmware stored in the mainfwa slot
+ * - ``fw.mainfwb``
+ - stored
+ - Version of firmware stored in the mainfwb slot
+ * - ``asic.id``
+ - fixed
+ - The ASIC type for this device
+ * - ``asic.rev``
+ - fixed
+ - The revision of the ASIC for this device
+
+
+Parameters
+==========
+
+The ``pds_core`` driver implements the following generic
+parameters for controlling the functionality to be made available
+as auxiliary_bus devices.
+
+.. list-table:: Generic parameters implemented
+ :widths: 5 5 8 82
+
+ * - Name
+ - Mode
+ - Type
+ - Description
+ * - ``enable_vnet``
+ - runtime
+ - Boolean
+ - Enables vDPA functionality through an auxiliary_bus device
+
+
+The ``pds_core`` driver also implements the following driver-specific
+parameters for similar uses, as well as for selecting the next boot firmware:
+
+.. list-table:: Driver-specific parameters implemented
+ :widths: 5 5 8 82
+
+ * - Name
+ - Mode
+ - Type
+ - Description
+ * - ``enable_migration``
+ - runtime
+ - Boolean
+ - Enables Live Migration functionality through an auxiliary_bus device
+ * - ``fw_bank``
+ - runtime
+ - String
+ - Selects the Firmware slot to use for the next DSC boot
+
+
+Firmware Management
+===================
+
+The ``fw_bank`` parameter can inspect and select the firmware image to be
+used in the next DSC boot up. Banks 1 and 2 are used for normal operations,
+while bank 3 should only be selected for recovery purposes if both the other
+banks have bad or corrupted firmware.
+
+The ``flash`` command can update a the DSC firmware. The downloaded firmware
+will be saved into either of firmware bank 1 or bank 2, whichever is not
+currrently in use, and that bank will be then selected for the next boot.
+The ``fw_bank`` parameter will be updated to reflect this.
+
+Enabling the driver
+===================
+
+The driver is enabled via the standard kernel configuration system,
+using the make command::
+
+ make oldconfig/menuconfig/etc.
+
+The driver is located in the menu structure at:
+
+ -> Device Drivers
+ -> Network device support (NETDEVICES [=y])
+ -> Ethernet driver support
+ -> Pensando devices
+ -> Pensando Ethernet PDS_CORE Support
+
+Support
+=======
+
+For general Linux networking support, please use the netdev mailing
+list, which is monitored by Pensando personnel::
+
+ netdev@vger.kernel.org
+
+For more specific support needs, please use the Pensando driver support
+email::
+
+ drivers@pensando.io
@@ -16156,8 +16156,9 @@ M: Brett Creeley <brett.creeley@amd.com>
M: drivers@pensando.io
L: netdev@vger.kernel.org
S: Supported
-F: Documentation/networking/device_drivers/ethernet/pensando/ionic.rst
+F: Documentation/networking/device_drivers/ethernet/pensando/
F: drivers/net/ethernet/pensando/
+F: include/linux/pds/
PER-CPU MEMORY ALLOCATOR
M: Dennis Zhou <dennis@kernel.org>
@@ -17,6 +17,18 @@ config NET_VENDOR_PENSANDO
if NET_VENDOR_PENSANDO
+config PDS_CORE
+ tristate "Pensando Data Systems Core Device Support"
+ depends on 64BIT && PCI
+ help
+ This enables the support for the Pensando Core device family of
+ adapters. More specific information on this driver can be
+ found in
+ <file:Documentation/networking/device_drivers/ethernet/pensando/pds_core.rst>.
+
+ To compile this driver as a module, choose M here. The module
+ will be called pds_core.
+
config IONIC
tristate "Pensando Ethernet IONIC Support"
depends on 64BIT && PCI
Documentation and Kconfig hook for building the driver. Signed-off-by: Shannon Nelson <shannon.nelson@amd.com> --- .../ethernet/pensando/pds_core.rst | 159 ++++++++++++++++++ MAINTAINERS | 3 +- drivers/net/ethernet/pensando/Kconfig | 12 ++ 3 files changed, 173 insertions(+), 1 deletion(-) create mode 100644 Documentation/networking/device_drivers/ethernet/pensando/pds_core.rst