diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-hcmd.c b/drivers/net/wireless/iwlwifi/iwl-agn-hcmd.c
index f06d1feedf81a574237d886551bb1c6db9b6f99e..a7216dda97868dd576c02ddee55484e9a3121ac4 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-hcmd.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-hcmd.c
@@ -164,7 +164,7 @@ static void iwlagn_gain_computation(struct iwl_priv *priv,
 
 		memset(&cmd, 0, sizeof(cmd));
 
-		cmd.hdr.op_code = IWL_PHY_CALIBRATE_CHAIN_NOISE_GAIN_CMD;
+		cmd.hdr.op_code = priv->_agn.phy_calib_chain_noise_gain_cmd;
 		cmd.hdr.first_group = 0;
 		cmd.hdr.groups_num = 1;
 		cmd.hdr.data_valid = 1;
@@ -197,7 +197,7 @@ static void iwlagn_chain_noise_reset(struct iwl_priv *priv)
 		data->beacon_count = 0;
 
 		memset(&cmd, 0, sizeof(cmd));
-		cmd.hdr.op_code = IWL_PHY_CALIBRATE_CHAIN_NOISE_RESET_CMD;
+		cmd.hdr.op_code = priv->_agn.phy_calib_chain_noise_reset_cmd;
 		cmd.hdr.first_group = 0;
 		cmd.hdr.groups_num = 1;
 		cmd.hdr.data_valid = 1;
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c
index 33a8f13ffe0a7f07e056cdb889ebe05dfb7acb92..db86f70d1a3febdbb2c8e49721c2b07be1be6ec9 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn.c
@@ -1692,6 +1692,7 @@ static void iwl_nic_start(struct iwl_priv *priv)
 
 struct iwlagn_ucode_capabilities {
 	u32 max_probe_length;
+	u32 standard_phy_calibration_size;
 };
 
 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context);
@@ -1967,6 +1968,13 @@ static int iwlagn_load_firmware(struct iwl_priv *priv,
 			else
 				priv->enhance_sensitivity_table = true;
 			break;
+		case IWL_UCODE_TLV_PHY_CALIBRATION_SIZE:
+			if (tlv_len != fixed_tlv_size)
+				ret = -EINVAL;
+			else
+				capa->standard_phy_calibration_size =
+					le32_to_cpup((__le32 *)tlv_data);
+			break;
 		default:
 			IWL_WARN(priv, "unknown TLV: %d\n", tlv_type);
 			break;
@@ -2005,6 +2013,8 @@ static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context)
 	u32 build;
 	struct iwlagn_ucode_capabilities ucode_capa = {
 		.max_probe_length = 200,
+		.standard_phy_calibration_size =
+			IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE,
 	};
 
 	memset(&pieces, 0, sizeof(pieces));
@@ -2226,6 +2236,20 @@ static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context)
 			pieces.boot_size);
 	memcpy(priv->ucode_boot.v_addr, pieces.boot, pieces.boot_size);
 
+	/*
+	 * figure out the offset of chain noise reset and gain commands
+	 * base on the size of standard phy calibration commands table size
+	 */
+	if (ucode_capa.standard_phy_calibration_size >
+	    IWL_MAX_PHY_CALIBRATE_TBL_SIZE)
+		ucode_capa.standard_phy_calibration_size =
+			IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE;
+
+	priv->_agn.phy_calib_chain_noise_reset_cmd =
+		ucode_capa.standard_phy_calibration_size;
+	priv->_agn.phy_calib_chain_noise_gain_cmd =
+		ucode_capa.standard_phy_calibration_size + 1;
+
 	/**************************************************
 	 * This is still part of probe() in a sense...
 	 *
diff --git a/drivers/net/wireless/iwlwifi/iwl-commands.h b/drivers/net/wireless/iwlwifi/iwl-commands.h
index 04b2e2987f1e86bf19564b79b595c3b39054c53b..67892f9ef2a5a96ffaab26ca8a0980efd843074c 100644
--- a/drivers/net/wireless/iwlwifi/iwl-commands.h
+++ b/drivers/net/wireless/iwlwifi/iwl-commands.h
@@ -3660,10 +3660,10 @@ enum {
 	IWL_PHY_CALIBRATE_CRYSTAL_FRQ_CMD	= 15,
 	IWL_PHY_CALIBRATE_BASE_BAND_CMD		= 16,
 	IWL_PHY_CALIBRATE_TX_IQ_PERD_CMD	= 17,
-	IWL_PHY_CALIBRATE_CHAIN_NOISE_RESET_CMD	= 18,
-	IWL_PHY_CALIBRATE_CHAIN_NOISE_GAIN_CMD	= 19,
+	IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE	= 18,
 };
 
+#define IWL_MAX_PHY_CALIBRATE_TBL_SIZE		(253)
 
 #define IWL_CALIB_INIT_CFG_ALL	cpu_to_le32(0xffffffff)
 
diff --git a/drivers/net/wireless/iwlwifi/iwl-dev.h b/drivers/net/wireless/iwlwifi/iwl-dev.h
index 297f8d1f5cb52fb9cb6f17ff983fddaf132bf119..4fa8cdd8f96ce7d07ecaa3b00024f1064e0d85e4 100644
--- a/drivers/net/wireless/iwlwifi/iwl-dev.h
+++ b/drivers/net/wireless/iwlwifi/iwl-dev.h
@@ -571,6 +571,7 @@ enum iwl_ucode_tlv_type {
 	IWL_UCODE_TLV_INIT_EVTLOG_SIZE	= 12,
 	IWL_UCODE_TLV_INIT_ERRLOG_PTR	= 13,
 	IWL_UCODE_TLV_ENHANCE_SENS_TBL	= 14,
+	IWL_UCODE_TLV_PHY_CALIBRATION_SIZE = 15,
 };
 
 struct iwl_ucode_tlv {
@@ -1321,6 +1322,14 @@ struct iwl_priv {
 			u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr;
 			u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr;
 
+			/*
+			 * chain noise reset and gain commands are the
+			 * two extra calibration commands follows the standard
+			 * phy calibration commands
+			 */
+			u8 phy_calib_chain_noise_reset_cmd;
+			u8 phy_calib_chain_noise_gain_cmd;
+
 			struct iwl_notif_statistics statistics;
 			struct iwl_bt_notif_statistics statistics_bt;
 #ifdef CONFIG_IWLWIFI_DEBUGFS