mwifiex: save driver information to file when firmware dump

This patch adds support to dump driver information to a file
when firmware dump happens. This information can be used to
root casue FW crash.

Signed-off-by: Xinming Hu <huxm@marvell.com>
Signed-off-by: Cathy Luo <cluo@marvell.com>
Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Xinming Hu 2014-12-23 19:14:10 +05:30 committed by Kalle Valo
parent bb5097fec9
commit 11cd07a969
5 changed files with 133 additions and 1 deletions
drivers/net/wireless/mwifiex

View File

@ -76,7 +76,9 @@ mwifiex_get_dump_flag(struct net_device *dev, struct ethtool_dump *dump)
dump->flag = adapter->curr_mem_idx;
dump->version = 1;
if (adapter->curr_mem_idx != MWIFIEX_FW_DUMP_IDX) {
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 {
@ -98,6 +100,13 @@ mwifiex_get_dump_data(struct net_device *dev, struct ethtool_dump *dump,
if (!adapter->if_ops.fw_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) {
dev_err(adapter->dev, "firmware dump in progress!!\n");
return -EBUSY;
@ -125,6 +134,11 @@ static int mwifiex_set_dump(struct net_device *dev, struct ethtool_dump *val)
if (!adapter->if_ops.fw_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) {
dev_err(adapter->dev, "firmware dump in progress!!\n");
return -EBUSY;

View File

@ -411,6 +411,11 @@ mwifiex_adapter_cleanup(struct mwifiex_adapter *adapter)
entry->mem_size = 0;
}
if (adapter->drv_info_dump) {
vfree(adapter->drv_info_dump);
adapter->drv_info_size = 0;
}
if (adapter->sleep_cfm)
dev_kfree_skb_any(adapter->sleep_cfm);
}

View File

@ -801,6 +801,108 @@ mwifiex_tx_timeout(struct net_device *dev)
}
}
void mwifiex_dump_drv_info(struct mwifiex_adapter *adapter)
{
void *p;
char drv_version[64];
struct usb_card_rec *cardp;
struct sdio_mmc_card *sdio_card;
struct mwifiex_private *priv;
int i, idx;
struct netdev_queue *txq;
struct mwifiex_debug_info *debug_info;
if (adapter->drv_info_dump) {
vfree(adapter->drv_info_dump);
adapter->drv_info_size = 0;
}
dev_info(adapter->dev, "=== DRIVER INFO DUMP START===\n");
adapter->drv_info_dump = vzalloc(MWIFIEX_DRV_INFO_SIZE_MAX);
if (!adapter->drv_info_dump)
return;
p = (char *)(adapter->drv_info_dump);
p += sprintf(p, "driver_name = " "\"mwifiex\"\n");
mwifiex_drv_get_driver_version(adapter, drv_version,
sizeof(drv_version) - 1);
p += sprintf(p, "driver_version = %s\n", drv_version);
if (adapter->iface_type == MWIFIEX_USB) {
cardp = (struct usb_card_rec *)adapter->card;
p += sprintf(p, "tx_cmd_urb_pending = %d\n",
atomic_read(&cardp->tx_cmd_urb_pending));
p += sprintf(p, "tx_data_urb_pending = %d\n",
atomic_read(&cardp->tx_data_urb_pending));
p += sprintf(p, "rx_cmd_urb_pending = %d\n",
atomic_read(&cardp->rx_cmd_urb_pending));
p += sprintf(p, "rx_data_urb_pending = %d\n",
atomic_read(&cardp->rx_data_urb_pending));
}
p += sprintf(p, "tx_pending = %d\n",
atomic_read(&adapter->tx_pending));
p += sprintf(p, "rx_pending = %d\n",
atomic_read(&adapter->rx_pending));
if (adapter->iface_type == MWIFIEX_SDIO) {
sdio_card = (struct sdio_mmc_card *)adapter->card;
p += sprintf(p, "\nmp_rd_bitmap=0x%x curr_rd_port=0x%x\n",
sdio_card->mp_rd_bitmap, sdio_card->curr_rd_port);
p += sprintf(p, "mp_wr_bitmap=0x%x curr_wr_port=0x%x\n",
sdio_card->mp_wr_bitmap, sdio_card->curr_wr_port);
}
for (i = 0; i < adapter->priv_num; i++) {
if (!adapter->priv[i] || !adapter->priv[i]->netdev)
continue;
priv = adapter->priv[i];
p += sprintf(p, "\n[interface : \"%s\"]\n",
priv->netdev->name);
p += sprintf(p, "wmm_tx_pending[0] = %d\n",
atomic_read(&priv->wmm_tx_pending[0]));
p += sprintf(p, "wmm_tx_pending[1] = %d\n",
atomic_read(&priv->wmm_tx_pending[1]));
p += sprintf(p, "wmm_tx_pending[2] = %d\n",
atomic_read(&priv->wmm_tx_pending[2]));
p += sprintf(p, "wmm_tx_pending[3] = %d\n",
atomic_read(&priv->wmm_tx_pending[3]));
p += sprintf(p, "media_state=\"%s\"\n", !priv->media_connected ?
"Disconnected" : "Connected");
p += sprintf(p, "carrier %s\n", (netif_carrier_ok(priv->netdev)
? "on" : "off"));
for (idx = 0; idx < priv->netdev->num_tx_queues; idx++) {
txq = netdev_get_tx_queue(priv->netdev, idx);
p += sprintf(p, "tx queue %d:%s ", idx,
netif_tx_queue_stopped(txq) ?
"stopped" : "started");
}
p += sprintf(p, "\n%s: num_tx_timeout = %d\n",
priv->netdev->name, priv->num_tx_timeout);
}
p += sprintf(p, "\n=== MORE DEBUG INFORMATION\n");
debug_info = kzalloc(sizeof(*debug_info), GFP_KERNEL);
if (debug_info) {
for (i = 0; i < adapter->priv_num; i++) {
if (!adapter->priv[i] || !adapter->priv[i]->netdev)
continue;
priv = adapter->priv[i];
mwifiex_get_debug_info(priv, debug_info);
p += mwifiex_debug_info_to_buffer(priv, p, debug_info);
break;
}
kfree(debug_info);
}
adapter->drv_info_size = p - adapter->drv_info_dump;
dev_info(adapter->dev, "=== DRIVER INFO DUMP END===\n");
}
EXPORT_SYMBOL_GPL(mwifiex_dump_drv_info);
/*
* CFG802.11 network device handler for statistics retrieval.
*/

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@ -41,6 +41,8 @@
#include "util.h"
#include "fw.h"
#include "pcie.h"
#include "usb.h"
#include "sdio.h"
extern const char driver_version[];
@ -136,6 +138,8 @@ enum {
/* Threshold for tx_timeout_cnt before we trigger a card reset */
#define TX_TIMEOUT_THRESHOLD 6
#define MWIFIEX_DRV_INFO_SIZE_MAX 0x40000
struct mwifiex_dbg {
u32 num_cmd_host_to_card_failure;
u32 num_cmd_sleep_cfm_host_to_card_failure;
@ -413,6 +417,7 @@ struct mwifiex_roc_cfg {
};
#define MWIFIEX_FW_DUMP_IDX 0xff
#define MWIFIEX_DRV_INFO_IDX 20
#define FW_DUMP_MAX_NAME_LEN 8
#define FW_DUMP_HOST_READY 0xEE
#define FW_DUMP_DONE 0xFF
@ -867,6 +872,8 @@ struct mwifiex_adapter {
struct memory_type_mapping *mem_type_mapping_tbl;
u8 num_mem_types;
u8 curr_mem_idx;
void *drv_info_dump;
u32 drv_info_size;
bool scan_chan_gap_enabled;
struct sk_buff_head rx_data_q;
struct mwifiex_chan_stats *chan_stats;
@ -1360,6 +1367,8 @@ void mwifiex_hist_data_add(struct mwifiex_private *priv,
u8 mwifiex_adjust_data_rate(struct mwifiex_private *priv,
u8 rx_rate, u8 ht_info);
void mwifiex_dump_drv_info(struct mwifiex_adapter *adapter);
#ifdef CONFIG_DEBUG_FS
void mwifiex_debugfs_init(void);
void mwifiex_debugfs_remove(void);

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@ -2023,6 +2023,8 @@ static void mwifiex_sdio_fw_dump_work(struct work_struct *work)
u32 memory_size;
static char *env[] = { "DRIVER=mwifiex_sdio", "EVENT=fw_dump", NULL };
mwifiex_dump_drv_info(adapter);
if (!card->supports_fw_dump)
return;