RFC: Add support for i226

detd/devices/intel_i226.py

@@ -8,11 +8,11 @@
 
 """
 
-
-
+import time
 
 from ..logger import get_logger
 
+from .device import Capability
 from .device import Device
 
 
@@ -23,8 +23,13 @@
 
 class IntelI226(Device):
 
-    # Devices supporting TSN: i226-LM, i226-IT
-    PCI_IDS_VALID = ['8086:125B', '8086:125D']
+    NUM_TX_QUEUES = 4
+    NUM_RX_QUEUES = 4
+
+    CAPABILITIES = [Capability.Qbv]
+
+    # Devices supporting TSN: i226-LM, i226-IT, i226-V
+    PCI_IDS_VALID = ['8086:125B', '8086:125D', '8086:125C']
 
     # Hardware default. Empty Flash Image (or NVM configuration loading failed)
     PCI_IDS_UNPROGRAMMED = ['8086:125F']
@@ -35,4 +40,41 @@ def __init__(self, pci_id):
 
         logger.info(f"Initializing {__class__.__name__}")
 
-        raise NotImplementedError("Handler class for i226 TSN Ethernet controller not yet implemented")
+        super().__init__(IntelI226.NUM_TX_QUEUES, IntelI226.NUM_RX_QUEUES)
+
+        if pci_id in IntelI226.PCI_IDS_UNPROGRAMMED:
+            raise "The flash image in this i226 device is empty, or the NVM configuration loading failed."
+
+        self.capabilities = [Capability.Qbv]
+
+        self.features['rxvlan'] = 'off'
+        #self.features['hw-tc-offload'] = 'on'
+
+        # self.num_tx_ring_entries and self.num_rx_ring_entries
+        # Provides the number of ring entries for Tx and Rx rings.
+        # Currently, the code just passes the value to ethtool's --set-ring.
+        self.num_tx_ring_entries = 1024
+        self.num_rx_ring_entries = 1024
+
+
+    def get_rate(self, interface):
+
+        # Without a small delay, the program flow will call ethtool twice too
+        # fast, causing it to return "Unknown!" speed
+        time.sleep(1)
+
+        return self.systeminfo.get_rate(interface)
+
+
+    def get_base_time_multiple(self):
+        return -1
+
+
+    def supports_schedule(self, schedule):
+
+        if schedule.opens_gate_multiple_times_per_cycle():
+            return False
+
+        # FIXME: check additional constraints, like maximum cycle time
+
+        return True