iwlwifi: allow masking out memory areas from the fw dump

Reading and dumping memory areas takes time, and sometimes
dumping all of the areas isn't necessary.

Allow choosing the memory areas which should be dumped.

Signed-off-by: Shahar S Matityahu <shahar.s.matityahu@intel.com>
Signed-off-by: Golan Ben Ami <golan.ben.ami@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

drivers/net/wireless/intel/iwlwifi/iwl-drv.c

@@ -1043,6 +1043,17 @@ static int iwl_parse_tlv_firmware(struct iwl_drv *drv,
 			pieces->dbg_trigger_tlv_len[trigger_id] = tlv_len;
 			break;
 			}
+		case IWL_UCODE_TLV_FW_DBG_DUMP_LST: {
+			if (tlv_len != sizeof(u32)) {
+				IWL_ERR(drv,
+					"dbg lst mask size incorrect, skip\n");
+				break;
+			}
+
+			drv->fw.dbg_dump_mask =
+				le32_to_cpup((__le32 *)tlv_data);
+			break;
+			}
 		case IWL_UCODE_TLV_SEC_RT_USNIFFER:
 			*usniffer_images = true;
 			iwl_store_ucode_sec(pieces, tlv_data,
@@ -1316,6 +1327,8 @@ static void iwl_req_fw_callback(const struct firmware *ucode_raw, void *context)
 	fw->ucode_capa.standard_phy_calibration_size =
 			IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE;
 	fw->ucode_capa.n_scan_channels = IWL_DEFAULT_SCAN_CHANNELS;
+	/* dump all fw memory areas by default */
+	fw->dbg_dump_mask = 0xffffffff;
 
 	pieces = kzalloc(sizeof(*pieces), GFP_KERNEL);
 	if (!pieces)