mwifiex: device dump support via devcoredump framework

Currently device dump generated in the driver is retrieved
using ethtool set/get dump commands. We will get rid of
ethtool approach and use devcoredump framework.

Device dump can be trigger by
cat /debugfs/mwifiex/mlanX/device_dump
and when the dump operation is completed, data can be read by
cat /sys/class/devcoredump/devcdX/data

We have prepared following script to split device dump data
into multiple files.

 [root]# cat mwifiex_split_dump_data.sh
 #!/bin/bash
 # usage: ./mwifiex_split_dump_data.sh dump_data

 fw_dump_data=$1

 mem_type="driverinfo ITCM DTCM SQRAM APU CIU ICU MAC"

 for name in ${mem_type[@]}
 do
     sed -n "/Start dump $name/,/End dump/p" $fw_dump_data  > tmp.$name.log
     if [ ! -s tmp.$name.log ]
     then
         rm -rf tmp.$name.log
     else
         #Remove the describle info "Start dump" and "End dump"
         sed '1d' tmp.$name.log | sed '$d' > /data/$name.log
         if [ -s /data/$name.log ]
         then
             echo "generate /data/$name.log"
         else
             sed '1d' tmp.$name.log | sed '$d' > /var/$name.log
             echo "generate /var/$name.log"
         fi
         rm -rf tmp.$name.log
     fi
 done

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Cathy Luo <cluo@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

1 files changed, 0 insertions, 99 deletions

diff --git a/drivers/net/wireless/mwifiex/ethtool.c b/drivers/net/wireless/mwifiex/ethtool.c
index c78bf0a340fb..58400c69ab26 100644
--- a/drivers/net/wireless/mwifiex/ethtool.c
+++ b/drivers/net/wireless/mwifiex/ethtool.c
@@ -64,106 +64,7 @@ static int mwifiex_ethtool_set_wol(struct net_device *dev,
 	return 0;
 }
 
-static int
-mwifiex_get_dump_flag(struct net_device *dev, struct ethtool_dump *dump)
-{
-	struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
-	struct mwifiex_adapter *adapter = priv->adapter;
-	struct memory_type_mapping *entry;
-
-	if (!adapter->if_ops.device_dump)
-		return -ENOTSUPP;
-
-	dump->flag = adapter->curr_mem_idx;
-	dump->version = 1;
-	if (adapter->curr_mem_idx == MWIFIEX_DRV_INFO_IDX) {
-		dump->len = adapter->drv_info_size;
-	} else if (adapter->curr_mem_idx != MWIFIEX_FW_DUMP_IDX) {
-		entry = &adapter->mem_type_mapping_tbl[adapter->curr_mem_idx];
-		dump->len = entry->mem_size;
-	} else {
-		dump->len = 0;
-	}
-
-	return 0;
-}
-
-static int
-mwifiex_get_dump_data(struct net_device *dev, struct ethtool_dump *dump,
-		      void *buffer)
-{
-	u8 *p = buffer;
-	struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
-	struct mwifiex_adapter *adapter = priv->adapter;
-	struct memory_type_mapping *entry;
-
-	if (!adapter->if_ops.device_dump)
-		return -ENOTSUPP;
-
-	if (adapter->curr_mem_idx == MWIFIEX_DRV_INFO_IDX) {
-		if (!adapter->drv_info_dump)
-			return -EFAULT;
-		memcpy(p, adapter->drv_info_dump, adapter->drv_info_size);
-		return 0;
-	}
-
-	if (adapter->curr_mem_idx == MWIFIEX_FW_DUMP_IDX) {
-		mwifiex_dbg(adapter, ERROR,
-			    "device dump in progress!!\n");
-		return -EBUSY;
-	}
-
-	entry = &adapter->mem_type_mapping_tbl[adapter->curr_mem_idx];
-
-	if (!entry->mem_ptr)
-		return -EFAULT;
-
-	memcpy(p, entry->mem_ptr, entry->mem_size);
-
-	entry->mem_size = 0;
-	vfree(entry->mem_ptr);
-	entry->mem_ptr = NULL;
-
-	return 0;
-}
-
-static int mwifiex_set_dump(struct net_device *dev, struct ethtool_dump *val)
-{
-	struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
-	struct mwifiex_adapter *adapter = priv->adapter;
-
-	if (!adapter->if_ops.device_dump)
-		return -ENOTSUPP;
-
-	if (val->flag == MWIFIEX_DRV_INFO_IDX) {
-		adapter->curr_mem_idx = MWIFIEX_DRV_INFO_IDX;
-		return 0;
-	}
-
-	if (adapter->curr_mem_idx == MWIFIEX_FW_DUMP_IDX) {
-		mwifiex_dbg(adapter, ERROR,
-			    "device dump in progress!!\n");
-		return -EBUSY;
-	}
-
-	if (val->flag == MWIFIEX_FW_DUMP_IDX) {
-		adapter->curr_mem_idx = val->flag;
-		adapter->if_ops.device_dump(adapter);
-		return 0;
-	}
-
-	if (val->flag < 0 || val->flag >= adapter->num_mem_types)
-		return -EINVAL;
-
-	adapter->curr_mem_idx = val->flag;
-
-	return 0;
-}
-
 const struct ethtool_ops mwifiex_ethtool_ops = {
 	.get_wol = mwifiex_ethtool_get_wol,
 	.set_wol = mwifiex_ethtool_set_wol,
-	.get_dump_flag = mwifiex_get_dump_flag,
-	.get_dump_data = mwifiex_get_dump_data,
-	.set_dump = mwifiex_set_dump,
 };