[Mellanox] Add common sai.profile per asic and asic_detect.sh script (#23676)

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#### Why I did it
This PR adds new script for Mellanox asic detection, as there are few places that use it.
The script queries "lspci" command to find out what is the current device ID.
If the script was successful, we write the value to asic_type so the script will be running only 1 time.

Also, added sai-spcx.profile and sai-bf3.profile with relevant parameters.

#### How I did it
Added new script to detect asic type, and new files for per-asic sai.profile

#### How to verify it
Run on switch and make sure the parameters are applied to sai.profile inside syncd.
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Author: mssonicbld

device/mellanox/x86_64-nvidia_sn5640-r0/Mellanox-SN5640-C448O16/sai.profile

@@ -1,3 +1,2 @@
 SAI_INIT_CONFIG_FILE=/usr/share/sonic/hwsku/sai_5640_448x100g_16x400g.xml
 SAI_KEY_SPC5_LOSSY_SCHEDULING=1
-SAI_DEFAULT_SWITCHING_MODE_STORE_FORWARD=1

device/mellanox/x86_64-nvidia_sn5640-r0/Mellanox-SN5640-C512S2/sai.profile

@@ -1,3 +1,2 @@
 SAI_INIT_CONFIG_FILE=/usr/share/sonic/hwsku/sai_5640_512x100g.xml
 SAI_KEY_SPC5_LOSSY_SCHEDULING=1
-SAI_DEFAULT_SWITCHING_MODE_STORE_FORWARD=1

device/mellanox/x86_64-nvidia_sn5640_simx-r0/ACS-SN5640/sai.profile

@@ -1,4 +1,2 @@
 SAI_INIT_CONFIG_FILE=/usr/share/sonic/hwsku/sai_5640.xml
 SAI_KEY_SPC5_LOSSY_SCHEDULING=1
-SAI_DEFAULT_SWITCHING_MODE_STORE_FORWARD=1
-

files/build_templates/docker_image_ctl.j2

@@ -682,6 +682,7 @@ start() {
         -v /tmp/nv-syncd-shared/:/tmp \
         -v /dev/shm:/dev/shm:rw \
         -v /var/log/sai_failure_dump:/var/log/sai_failure_dump:rw \
+        -v /usr/bin/asic_detect:/usr/bin/asic_detect:rw \
         -e SX_API_SOCKET_FILE=/var/run/sx_sdk/sx_api.sock \
 {%- elif docker_container_name == "pmon" %}
         -v /var/run/hw-management:/var/run/hw-management:rw \
@@ -697,6 +698,11 @@ start() {
 {%- endif %}
 {%- endif %}
 {%- endif %}
+{%- if sonic_asic_platform == "nvidia-bluefield" %}
+{%- if docker_container_name == "syncd" %}
+        -v /usr/bin/asic_detect:/usr/bin/asic_detect:rw \
+{%- endif %}
+{%- endif %}
 {%- if sonic_asic_platform == "broadcom" %}
 {%- if docker_container_name == "syncd" %}
         --shm-size=${SYNCD_SHM_SIZE:-512m} \

files/build_templates/sonic_debian_extension.j2

@@ -1095,6 +1095,8 @@ sudo cp platform/mellanox/cmis_host_mgmt/cmis_host_mgmt.py $FILESYSTEM_ROOT/usr/
 sudo chmod 755 $FILESYSTEM_ROOT/usr/bin/cmis_host_mgmt.py
 j2 platform/mellanox/mlnx-fw-upgrade.j2 | sudo tee $FILESYSTEM_ROOT/usr/bin/mlnx-fw-upgrade.sh
 sudo chmod 755 $FILESYSTEM_ROOT/usr/bin/mlnx-fw-upgrade.sh
+sudo cp -r platform/mellanox/asic_detect $FILESYSTEM_ROOT/usr/bin/asic_detect
+sudo chmod -R 777 $FILESYSTEM_ROOT/usr/bin/asic_detect/
 
 # Install mlnx-sonic-platform Python 3 package
 install_pip_package {{mlnx_platform_api_py3_wheel_path}}
@@ -1131,6 +1133,8 @@ done
 sudo install -m 755 platform/nvidia-bluefield/byo/sonic-byo.py $FILESYSTEM_ROOT/usr/bin/sonic-byo.py
 SONIC_PLATFORM={{sonic_asic_platform}} j2 platform/mellanox/mlnx-fw-upgrade.j2 | sudo tee $FILESYSTEM_ROOT/usr/bin/mlnx-fw-upgrade.sh
 sudo chmod 755 $FILESYSTEM_ROOT/usr/bin/mlnx-fw-upgrade.sh
+sudo cp -r platform/mellanox/asic_detect $FILESYSTEM_ROOT/usr/bin/asic_detect
+sudo chmod -R 777 $FILESYSTEM_ROOT/usr/bin/asic_detect/
 
 install_pip_package {{platform_api_py3_wheel_path}}
 

platform/mellanox/asic_detect/asic_detect.sh

@@ -0,0 +1,57 @@
+#!/usr/bin/env bash
+#
+# SPDX-FileCopyrightText: NVIDIA CORPORATION & AFFILIATES
+# Copyright (c) 2025 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+# SPDX-License-Identifier: Apache-2.0
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+SUCCESS_CODE=0
+RC=-1
+
+if [[ -f "/usr/bin/asic_detect/asic_type" ]]; then
+    cat /usr/bin/asic_detect/asic_type
+    exit $SUCCESS_CODE
+fi
+
+# make sure that DEVICE_DICT keys are the same as values in DEVICE_ORDER
+declare -A DEVICE_DICT=(
+    ["cb84"]="spc1"
+    ["cf6c"]="spc2"
+    ["cf70"]="spc3"
+    ["cf80"]="spc4"
+    ["cf82"]="spc5"
+    ["a2dc"]="bf3"
+)
+TYPE_UNKNOWN="unknown"
+VENDOR_ID="15b3"
+DEVICE_TYPE=$TYPE_UNKNOWN
+
+# bf3 should be the last device in the list
+DEVICE_ORDER=("cb84" "cf6c" "cf70" "cf80" "cf82" "a2dc")
+
+lspci_output=$(lspci -n 2>/dev/null)
+if [[ -n "$lspci_output" ]]; then
+    for key in "${DEVICE_ORDER[@]}"; do
+        if echo "$lspci_output" | grep "$VENDOR_ID:$key" &>/dev/null; then
+            DEVICE_TYPE="${DEVICE_DICT[$key]}"
+            RC=$SUCCESS_CODE
+            break
+        fi
+    done
+    if [[ -n "$DEVICE_TYPE" ]]; then
+        echo "$DEVICE_TYPE" | tee >( [[ "$DEVICE_TYPE" != "$TYPE_UNKNOWN" ]] && cat > /usr/bin/asic_detect/asic_type )
+    fi
+    exit $RC
+fi

platform/mellanox/docker-syncd-mlnx/Dockerfile.j2

@@ -71,7 +71,7 @@ COPY ["critical_processes", "/etc/supervisor/"]
 COPY ["platform_syncd_dump.sh", "/usr/bin/"]
 
 RUN mkdir -p /etc/mlnx/
-COPY ["sai-common.profile", "/etc/mlnx/"]
+COPY sai-*.profile /etc/mlnx/
 
 RUN mkdir -p /etc/supervisor/conf.d/
 RUN sonic-cfggen -a "{\"ENABLE_ASAN\":\"{{ENABLE_ASAN}}\"}" -t /usr/share/sonic/templates/supervisord.conf.j2 > /etc/supervisor/conf.d/supervisord.conf

platform/mellanox/docker-syncd-mlnx/sai-spc1.profile

@@ -0,0 +1 @@
+SAI_MIRROR_SESSION_HW_ID_RESERVATION=7

platform/mellanox/docker-syncd-mlnx/sai-spc2.profile

@@ -0,0 +1 @@
+SAI_MIRROR_SESSION_HW_ID_RESERVATION=7