From: Xinming Hu <huxm@xxxxxxxxxxx>
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@xxxxxxxxxxx>
Signed-off-by: Cathy Luo <cluo@xxxxxxxxxxx>
Signed-off-by: Avinash Patil <patila@xxxxxxxxxxx>
---
drivers/net/wireless/mwifiex/ethtool.c | 16 +++++-
drivers/net/wireless/mwifiex/init.c | 5 ++
drivers/net/wireless/mwifiex/main.c | 102 +++++++++++++++++++++++++++++++++
drivers/net/wireless/mwifiex/main.h | 9 +++
drivers/net/wireless/mwifiex/sdio.c | 2 +
5 files changed, 133 insertions(+), 1 deletion(-)
diff --git a/drivers/net/wireless/mwifiex/ethtool.c b/drivers/net/wireless/mwifiex/ethtool.c
index 04e56b5..65d8d6d 100644
--- a/drivers/net/wireless/mwifiex/ethtool.c
+++ b/drivers/net/wireless/mwifiex/ethtool.c
@@ -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;
diff --git a/drivers/net/wireless/mwifiex/init.c b/drivers/net/wireless/mwifiex/init.c
index 520ad4a..a3dd601 100644
--- a/drivers/net/wireless/mwifiex/init.c
+++ b/drivers/net/wireless/mwifiex/init.c
@@ -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);
}
diff --git a/drivers/net/wireless/mwifiex/main.c b/drivers/net/wireless/mwifiex/main.c
index 0c44c5ee..4edaaf4 100644
--- a/drivers/net/wireless/mwifiex/main.c
+++ b/drivers/net/wireless/mwifiex/main.c
@@ -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.
*/
diff --git a/drivers/net/wireless/mwifiex/main.h b/drivers/net/wireless/mwifiex/main.h
index 6f7e060..2f085de 100644
--- a/drivers/net/wireless/mwifiex/main.h
+++ b/drivers/net/wireless/mwifiex/main.h
@@ -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);
diff --git a/drivers/net/wireless/mwifiex/sdio.c b/drivers/net/wireless/mwifiex/sdio.c
index 933dae1..6bdfe67 100644
--- a/drivers/net/wireless/mwifiex/sdio.c
+++ b/drivers/net/wireless/mwifiex/sdio.c
@@ -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;
--
1.8.1.4
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