new file mode 100644
@@ -0,0 +1,143 @@
+.. SPDX-License-Identifier: GPL-2.0+
+
+========================================================
+Linux Driver for the AMD/Pensando(R) DSC adapter family
+========================================================
+
+Copyright(c) 2023 Advanced Micro Devices, Inc
+
+Identifying the Adapter
+=======================
+
+To find if one or more AMD/Pensando PCI Core devices are installed on the
+host, check for the PCI devices::
+
+ # lspci -d 1dd8:100c
+ b5:00.0 Processing accelerators: Pensando Systems Device 100c
+ b6:00.0 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: 252.048 Gb/s available PCIe bandwidth (16.0 GT/s PCIe x16 link)
+ pds_core 0000:b5:00.0: FW: 1.60.0-73
+ pds_core 0000:b6:00.0: 252.048 Gb/s available PCIe bandwidth (16.0 GT/s PCIe x16 link)
+ pds_core 0000:b6:00.0: FW: 1.60.0-73
+
+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 1.60.0-73
+ fw.mainfwb 1.60.0-57
+
+
+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
+
+
+Firmware Management
+===================
+
+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.
+
+Health Reporters
+================
+
+The driver supports a devlink health reporter for FW status::
+
+ # devlink health show pci/0000:2b:00.0 reporter fw
+ pci/0000:2b:00.0:
+ reporter fw
+ state healthy error 0 recover 0
+
+
+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
+ -> AMD devices
+ -> AMD/Pensando Ethernet PDS_CORE Support
+
+Support
+=======
+
+For general Linux networking support, please use the netdev mailing
+list, which is monitored by AMD/Pensando personnel::
+
+ netdev@vger.kernel.org
+
+For more specific support needs, please use the AMD/Pensando driver support
+email::
+
+ drivers@pensando.io
@@ -13,6 +13,7 @@ Contents:
3com/3c509
3com/vortex
amazon/ena
+ amd/pds_core
altera/altera_tse
aquantia/atlantic
chelsio/cxgb
@@ -1041,6 +1041,15 @@ F: drivers/gpu/drm/amd/include/vi_structs.h
F: include/uapi/linux/kfd_ioctl.h
F: include/uapi/linux/kfd_sysfs.h
+AMD PDS CORE DRIVER
+M: Shannon Nelson <shannon.nelson@amd.com>
+M: Brett Creeley <brett.creeley@amd.com>
+M: drivers@pensando.io
+L: netdev@vger.kernel.org
+S: Supported
+F: Documentation/networking/device_drivers/ethernet/amd/pds_core.rst
+F: drivers/net/ethernet/amd/pds_core/
+
AMD SPI DRIVER
M: Sanjay R Mehta <sanju.mehta@amd.com>
S: Maintained
@@ -186,4 +186,16 @@ config AMD_XGBE_HAVE_ECC
bool
default n
+config PDS_CORE
+ tristate "AMD/Pensando Data Systems Core Device Support"
+ depends on 64BIT && PCI
+ help
+ This enables the support for the AMD/Pensando Core device family of
+ adapters. More specific information on this driver can be
+ found in
+ <file:Documentation/networking/device_drivers/ethernet/amd/pds_core.rst>.
+
+ To compile this driver as a module, choose M here. The module
+ will be called pds_core.
+
endif # NET_VENDOR_AMD
@@ -17,3 +17,4 @@ obj-$(CONFIG_PCNET32) += pcnet32.o
obj-$(CONFIG_SUN3LANCE) += sun3lance.o
obj-$(CONFIG_SUNLANCE) += sunlance.o
obj-$(CONFIG_AMD_XGBE) += xgbe/
+obj-$(CONFIG_PDS_CORE) += pds_core/
Documentation and Kconfig hook for building the driver. Signed-off-by: Shannon Nelson <shannon.nelson@amd.com> --- .../device_drivers/ethernet/amd/pds_core.rst | 143 ++++++++++++++++++ .../device_drivers/ethernet/index.rst | 1 + MAINTAINERS | 9 ++ drivers/net/ethernet/amd/Kconfig | 12 ++ drivers/net/ethernet/amd/Makefile | 1 + 5 files changed, 166 insertions(+) create mode 100644 Documentation/networking/device_drivers/ethernet/amd/pds_core.rst