From 587b14a3bf4a043941e2bcbaee8eafad6aa3d2a2 Mon Sep 17 00:00:00 2001
From: Andriy Moroz <c_andriym@mellanox.com>
Date: Fri, 20 Oct 2017 04:36:25 +0300
Subject: [PATCH] [Mellanox]: Add get_presence implementation for SFP on
 Mellanox platforms (#1056)

Signed-off-by: Andriy Moroz <c_andriym@mellanox.com>
---
 .../x86_64-mlnx_msn2410-r0/plugins/sfputil.py   | 17 ++++++++++++++++-
 .../x86_64-mlnx_msn2700-r0/plugins/sfputil.py   | 17 ++++++++++++++++-
 .../x86_64-mlnx_msn2740-r0/plugins/sfputil.py   | 17 ++++++++++++++++-
 3 files changed, 48 insertions(+), 3 deletions(-)

diff --git a/device/mellanox/x86_64-mlnx_msn2410-r0/plugins/sfputil.py b/device/mellanox/x86_64-mlnx_msn2410-r0/plugins/sfputil.py
index db71cb4235..0d7870b785 100644
--- a/device/mellanox/x86_64-mlnx_msn2410-r0/plugins/sfputil.py
+++ b/device/mellanox/x86_64-mlnx_msn2410-r0/plugins/sfputil.py
@@ -46,8 +46,23 @@ class SfpUtil(SfpUtilBase):
         SfpUtilBase.__init__(self)
 
     def get_presence(self, port_num):
+        # Check for invalid port_num
+        if port_num < self.port_start or port_num > self.port_end:
+            return False
 
-        raise NotImplementedError
+        try:
+            reg_file = open("/bsp/qsfp/qsfp%d_status" % (port_num+1))
+        except IOError as e:
+            print "Error: unable to open file: %s" % str(e)
+            return False
+
+        content = reg_file.readline().rstrip()
+
+        # content is a string with the qsfp status
+        if content == "good":
+            return True
+
+        return False
 
     def get_low_power_mode(self, port_num):
 
diff --git a/device/mellanox/x86_64-mlnx_msn2700-r0/plugins/sfputil.py b/device/mellanox/x86_64-mlnx_msn2700-r0/plugins/sfputil.py
index b746af2199..b768cc4402 100644
--- a/device/mellanox/x86_64-mlnx_msn2700-r0/plugins/sfputil.py
+++ b/device/mellanox/x86_64-mlnx_msn2700-r0/plugins/sfputil.py
@@ -46,8 +46,23 @@ class SfpUtil(SfpUtilBase):
         SfpUtilBase.__init__(self)
 
     def get_presence(self, port_num):
+        # Check for invalid port_num
+        if port_num < self.port_start or port_num > self.port_end:
+            return False
 
-        raise NotImplementedError
+        try:
+            reg_file = open("/bsp/qsfp/qsfp%d_status" % (port_num+1))
+        except IOError as e:
+            print "Error: unable to open file: %s" % str(e)
+            return False
+
+        content = reg_file.readline().rstrip()
+
+        # content is a string with the qsfp status
+        if content == "good":
+            return True
+
+        return False
 
     def get_low_power_mode(self, port_num):
 
diff --git a/device/mellanox/x86_64-mlnx_msn2740-r0/plugins/sfputil.py b/device/mellanox/x86_64-mlnx_msn2740-r0/plugins/sfputil.py
index b746af2199..b768cc4402 100644
--- a/device/mellanox/x86_64-mlnx_msn2740-r0/plugins/sfputil.py
+++ b/device/mellanox/x86_64-mlnx_msn2740-r0/plugins/sfputil.py
@@ -46,8 +46,23 @@ class SfpUtil(SfpUtilBase):
         SfpUtilBase.__init__(self)
 
     def get_presence(self, port_num):
+        # Check for invalid port_num
+        if port_num < self.port_start or port_num > self.port_end:
+            return False
 
-        raise NotImplementedError
+        try:
+            reg_file = open("/bsp/qsfp/qsfp%d_status" % (port_num+1))
+        except IOError as e:
+            print "Error: unable to open file: %s" % str(e)
+            return False
+
+        content = reg_file.readline().rstrip()
+
+        # content is a string with the qsfp status
+        if content == "good":
+            return True
+
+        return False
 
     def get_low_power_mode(self, port_num):