[dpdk-dev] [PATCH 26/36] ixgbe base codes: SFP probe

[Ouyang Changchun]

Check if SFP is detected or not.

Signed-off-by: Changchun Ouyang <changchun.ouyang at intel.com>
---
 lib/librte_pmd_ixgbe/ixgbe/ixgbe_phy.c | 18 ++++++++++++++++++
 lib/librte_pmd_ixgbe/ixgbe/ixgbe_phy.h |  4 ++++
 2 files changed, 22 insertions(+)

diff --git a/lib/librte_pmd_ixgbe/ixgbe/ixgbe_phy.c b/lib/librte_pmd_ixgbe/ixgbe/ixgbe_phy.c
index 3a4ffc1..6d1b0e6 100644
--- a/lib/librte_pmd_ixgbe/ixgbe/ixgbe_phy.c
+++ b/lib/librte_pmd_ixgbe/ixgbe/ixgbe_phy.c
@@ -1890,6 +1890,21 @@ s32 ixgbe_write_i2c_eeprom_generic(struct ixgbe_hw *hw, u8 byte_offset,
 }
 
 /**
+ * ixgbe_is_sfp_probe - Returns true if SFP is being detected
+ * @hw: pointer to hardware structure
+ * @offset: eeprom offset to be read
+ * @addr: I2C address to be read
+ */
+STATIC bool ixgbe_is_sfp_probe(struct ixgbe_hw *hw, u8 offset, u8 addr)
+{
+	if (addr == IXGBE_I2C_EEPROM_DEV_ADDR &&
+	    offset == IXGBE_SFF_IDENTIFIER &&
+	    hw->phy.sfp_type == ixgbe_sfp_type_not_present)
+		return true;
+	return false;
+}
+
+/**
  *  ixgbe_read_i2c_byte_generic - Reads 8 bit word over I2C
  *  @hw: pointer to hardware structure
  *  @byte_offset: byte offset to read
@@ -1910,6 +1925,9 @@ s32 ixgbe_read_i2c_byte_generic(struct ixgbe_hw *hw, u8 byte_offset,
 
 	DEBUGFUNC("ixgbe_read_i2c_byte_generic");
 
+	if (ixgbe_is_sfp_probe(hw, byte_offset, dev_addr))
+		max_retry = IXGBE_SFP_DETECT_RETRIES;
+
 	do {
 		if (hw->mac.ops.acquire_swfw_sync(hw, swfw_mask))
 			return IXGBE_ERR_SWFW_SYNC;
diff --git a/lib/librte_pmd_ixgbe/ixgbe/ixgbe_phy.h b/lib/librte_pmd_ixgbe/ixgbe/ixgbe_phy.h
index 805b9f9..21d88f7 100644
--- a/lib/librte_pmd_ixgbe/ixgbe/ixgbe_phy.h
+++ b/lib/librte_pmd_ixgbe/ixgbe/ixgbe_phy.h
@@ -114,6 +114,10 @@ POSSIBILITY OF SUCH DAMAGE.
 #define IXGBE_I2C_T_SU_STO	4
 #define IXGBE_I2C_T_BUF		5
 
+#ifndef IXGBE_SFP_DETECT_RETRIES
+#define IXGBE_SFP_DETECT_RETRIES	10
+
+#endif /* IXGBE_SFP_DETECT_RETRIES */
 #define IXGBE_TN_LASI_STATUS_REG	0x9005
 #define IXGBE_TN_LASI_STATUS_TEMP_ALARM	0x0008
 
-- 
1.8.4.2