[DellEMC-Z9264f-Q64] Add PFC support for 40G z9264f (sonic-net#2940)

This commit adds new code and JAON file to support PFC and MMU setting for PFC feature on z9264f-Q64 (40G) T0 and T1 support. The buffers_defaults_t0.json and buffers_defaults_t1.json file has the recommended values for T0 and T1 configuration. Unit tested and verified by running JSON file and checking the hardware registers and table in broadcom. THe settings in hardware are reflecting the JSON values. Signed-off-by: Harish Venkatraman <harish_venkatraman@dell.com>
criteo-forks · May 28, 2019 · 128537d · 128537d
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diff --git a/device/dell/x86_64-dellemc_z9264f_c3538-r0/DellEMC-Z9264f-Q64/buffers.json.j2 b/device/dell/x86_64-dellemc_z9264f_c3538-r0/DellEMC-Z9264f-Q64/buffers.json.j2
@@ -0,0 +1,2 @@
+{%- set default_topo = 't1' %}
+{%- include 'buffers_config.j2' %}
diff --git a/device/dell/x86_64-dellemc_z9264f_c3538-r0/DellEMC-Z9264f-Q64/buffers_defaults_t0.j2 b/device/dell/x86_64-dellemc_z9264f_c3538-r0/DellEMC-Z9264f-Q64/buffers_defaults_t0.j2
@@ -0,0 +1,47 @@
+
+{%- set default_cable = '5m' %}
+
+{%- macro generate_port_lists(PORT_ALL) %}
+    {# Generate list of ports #}
+    {%- for port_idx in range(0,64) %}
+        {%- if PORT_ALL.append("Ethernet%d" % (port_idx*4)) %}{%- endif %}
+    {%- endfor %}
+{%- endmacro %}
+
+{%- macro generate_buffer_pool_and_profiles() %}
+    "BUFFER_POOL": {
+        "ingress_lossless_pool": {
+            "size": "38738752",
+            "type": "ingress",
+            "mode": "dynamic",
+            "xoff": "3855488"
+        },
+        "egress_lossy_pool": {
+            "size": "37057280",
+            "type": "egress",
+            "mode": "dynamic"
+        },
+        "egress_lossless_pool": {
+            "size": "43507776",
+            "type": "egress",
+            "mode": "static"
+        }
+    },
+    "BUFFER_PROFILE": {
+        "ingress_lossy_profile": {
+            "pool":"[BUFFER_POOL|ingress_lossless_pool]",
+            "size":"0",
+            "dynamic_th":"3"
+        },
+        "egress_lossless_profile": {
+            "pool":"[BUFFER_POOL|egress_lossless_pool]",
+            "size":"1518",
+            "static_th":"10876944"
+        },
+        "egress_lossy_profile": {
+            "pool":"[BUFFER_POOL|egress_lossy_pool]",
+            "size":"1518",
+            "dynamic_th":"3"
+        }
+    },
+{%- endmacro %}
diff --git a/device/dell/x86_64-dellemc_z9264f_c3538-r0/DellEMC-Z9264f-Q64/buffers_defaults_t1.j2 b/device/dell/x86_64-dellemc_z9264f_c3538-r0/DellEMC-Z9264f-Q64/buffers_defaults_t1.j2
@@ -0,0 +1,47 @@
+
+{%- set default_cable = '40m' %}
+
+{%- macro generate_port_lists(PORT_ALL) %}
+    {# Generate list of ports #}
+    {%- for port_idx in range(0,64) %}
+        {%- if PORT_ALL.append("Ethernet%d" % (port_idx*4)) %}{%- endif %}
+    {%- endfor %}
+{%- endmacro %}
+
+{%- macro generate_buffer_pool_and_profiles() %}
+    "BUFFER_POOL": {
+        "ingress_lossless_pool": {
+            "size": "37968320",
+            "type": "ingress",
+            "mode": "dynamic",
+            "xoff": "4625920"
+        },
+        "egress_lossy_pool": {
+            "size": "36402496",
+            "type": "egress",
+            "mode": "dynamic"
+        },
+        "egress_lossless_pool": {
+            "size": "43507776",
+            "type": "egress",
+            "mode": "static"
+        }
+    },
+    "BUFFER_PROFILE": {
+        "ingress_lossy_profile": {
+            "pool":"[BUFFER_POOL|ingress_lossless_pool]",
+            "size":"0",
+            "dynamic_th":"3"
+        },
+        "egress_lossless_profile": {
+            "pool":"[BUFFER_POOL|egress_lossless_pool]",
+            "size":"1518",
+            "static_th":"10876944"
+        },
+        "egress_lossy_profile": {
+            "pool":"[BUFFER_POOL|egress_lossy_pool]",
+            "size":"1518",
+            "dynamic_th":"3"
+        }
+    },
+{%- endmacro %}
diff --git a/device/dell/x86_64-dellemc_z9264f_c3538-r0/DellEMC-Z9264f-Q64/pg_profile_lookup.ini b/device/dell/x86_64-dellemc_z9264f_c3538-r0/DellEMC-Z9264f-Q64/pg_profile_lookup.ini
@@ -0,0 +1,17 @@
+# PG lossless profiles.
+# speed cable size    xon  xoff threshold xon_offset
+  10000  5m   1248    2288 35776  -3        2288
+  25000  5m   1248    2288 53248  -3        2288
+  40000  5m   1248    2288 66560  -3        2288
+  50000  5m   1248    2288 90272  -3        2288
+ 100000  5m   1248    2288 165568 -3        2288
+  10000  40m  1248    2288 37024  -3        2288
+  25000  40m  1248    2288 53248  -3        2288
+  40000  40m  1248    2288 71552  -3        2288
+  50000  40m  1248    2288 96096  -3        2288
+ 100000  40m  1248    2288 177632 -3        2288
+  10000  300m 1248    2288 46176  -3        2288
+  25000  300m 1248    2288 79040  -3        2288
+  40000  300m 1248    2288 108160 -3        2288
+  50000  300m 1248    2288 141856 -3        2288
+ 100000  300m 1248    2288 268736 -3        2288
diff --git a/device/dell/x86_64-dellemc_z9264f_c3538-r0/DellEMC-Z9264f-Q64/qos.json.j2 b/device/dell/x86_64-dellemc_z9264f_c3538-r0/DellEMC-Z9264f-Q64/qos.json.j2
@@ -0,0 +1 @@
+{%- include 'qos_config.j2' %}
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1,2 @@
		{%- set default_topo = 't1' %}
		{%- include 'buffers_config.j2' %}