mwifiex: add firmware dump feature for PCIe

Firmware dump feature is added for PCIe based chipsets which can
be used with the help of ethtool commands.

1) Trigger firmware dump operation:
ethtool --set-dump mlan0 0xff

When the operation is completed, udev event will be sent to
trigger external application.

2) Following udev rule can be used to get the data from ethtool:
DRIVER=="mwifiex_pcie", ACTION=="change", RUN+="/sbin/mwifiex_pcie_fw_dump.sh"

mwifiex_pcie_fw_dump.sh: #!/bin/bash
ethtool --set-dump mlan0 0
ethtool --get-dump mlan0
ethtool --get-dump mlan0 data /tmp/ITCM.log

ethtool --set-dump mlan0 1
ethtool --get-dump mlan0
ethtool --get-dump mlan0 data /tmp/DTCM.log

ethtool --set-dump mlan0 2
ethtool --get-dump mlan0
ethtool --get-dump mlan0 data /tmp/SQRAM.log

ethtool --set-dump mlan0 3
ethtool --get-dump mlan0
ethtool --get-dump mlan0 data /tmp/IRAM.log

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 29 insertions, 0 deletions

diff --git a/drivers/net/wireless/mwifiex/main.h b/drivers/net/wireless/mwifiex/main.h
index 1398afa84064..24791e2acf24 100644
--- a/drivers/net/wireless/mwifiex/main.h
+++ b/drivers/net/wireless/mwifiex/main.h
@@ -30,6 +30,7 @@
 #include <linux/etherdevice.h>
 #include <net/sock.h>
 #include <net/lib80211.h>
+#include <linux/vmalloc.h>
 #include <linux/firmware.h>
 #include <linux/ctype.h>
 #include <linux/of.h>
@@ -410,6 +411,28 @@ struct mwifiex_roc_cfg {
         struct ieee80211_channel chan;
 };
 
+#define MWIFIEX_FW_DUMP_IDX             0xff
+#define FW_DUMP_MAX_NAME_LEN            8
+#define FW_DUMP_HOST_READY              0xEE
+#define FW_DUMP_DONE                    0xFF
+
+struct memory_type_mapping {
+        u8 mem_name[FW_DUMP_MAX_NAME_LEN];
+        u8 *mem_ptr;
+        u32 mem_size;
+        u8 done_flag;
+};
+
+enum rdwr_status {
+        RDWR_STATUS_SUCCESS = 0,
+        RDWR_STATUS_FAILURE = 1,
+        RDWR_STATUS_DONE = 2
+};
+
+enum mwifiex_iface_work_flags {
+        MWIFIEX_IFACE_WORK_FW_DUMP,
+};
+
 struct mwifiex_adapter;
 struct mwifiex_private;
 
@@ -674,6 +697,7 @@ struct mwifiex_if_ops {
         void (*card_reset) (struct mwifiex_adapter *);
         void (*fw_dump)(struct mwifiex_adapter *);
         int (*clean_pcie_ring) (struct mwifiex_adapter *adapter);
+        void (*iface_work)(struct work_struct *work);
 };
 
 struct mwifiex_adapter {
@@ -809,6 +833,11 @@ struct mwifiex_adapter {
         bool ext_scan;
         u8 fw_api_ver;
         u8 fw_key_api_major_ver, fw_key_api_minor_ver;
+        struct work_struct iface_work;
+        unsigned long iface_work_flags;
+        struct memory_type_mapping *mem_type_mapping_tbl;
+        u8 num_mem_types;
+        u8 curr_mem_idx;
 };
 
 int mwifiex_init_lock_list(struct mwifiex_adapter *adapter);