ath6kl: add debug messages for credit handling
[cascardo/linux.git] / drivers / net / wireless / ath / ath6kl / debug.c
index 316136c..d537ccf 100644 (file)
  */
 
 #include "core.h"
+
+#include <linux/circ_buf.h>
+#include <linux/fs.h>
+#include <linux/vmalloc.h>
+
 #include "debug.h"
+#include "target.h"
+
+struct ath6kl_fwlog_slot {
+       __le32 timestamp;
+       __le32 length;
+
+       /* max ATH6KL_FWLOG_PAYLOAD_SIZE bytes */
+       u8 payload[0];
+};
+
+#define ATH6KL_FWLOG_SIZE 32768
+#define ATH6KL_FWLOG_SLOT_SIZE (sizeof(struct ath6kl_fwlog_slot) + \
+                               ATH6KL_FWLOG_PAYLOAD_SIZE)
+#define ATH6KL_FWLOG_VALID_MASK 0x1ffff
 
 int ath6kl_printk(const char *level, const char *fmt, ...)
 {
@@ -36,6 +55,27 @@ int ath6kl_printk(const char *level, const char *fmt, ...)
 }
 
 #ifdef CONFIG_ATH6KL_DEBUG
+
+#define REG_OUTPUT_LEN_PER_LINE        25
+#define REGTYPE_STR_LEN                100
+
+struct ath6kl_diag_reg_info {
+       u32 reg_start;
+       u32 reg_end;
+       const char *reg_info;
+};
+
+static const struct ath6kl_diag_reg_info diag_reg[] = {
+       { 0x20000, 0x200fc, "General DMA and Rx registers" },
+       { 0x28000, 0x28900, "MAC PCU register & keycache" },
+       { 0x20800, 0x20a40, "QCU" },
+       { 0x21000, 0x212f0, "DCU" },
+       { 0x4000,  0x42e4, "RTC" },
+       { 0x540000, 0x540000 + (256 * 1024), "RAM" },
+       { 0x29800, 0x2B210, "Base Band" },
+       { 0x1C000, 0x1C748, "Analog" },
+};
+
 void ath6kl_dump_registers(struct ath6kl_device *dev,
                           struct ath6kl_irq_proc_registers *irq_proc_reg,
                           struct ath6kl_irq_enable_reg *irq_enable_reg)
@@ -102,49 +142,1457 @@ void ath6kl_dump_registers(struct ath6kl_device *dev,
 
 static void dump_cred_dist(struct htc_endpoint_credit_dist *ep_dist)
 {
-       ath6kl_dbg(ATH6KL_DBG_ANY,
+       ath6kl_dbg(ATH6KL_DBG_CREDIT,
                   "--- endpoint: %d  svc_id: 0x%X ---\n",
                   ep_dist->endpoint, ep_dist->svc_id);
-       ath6kl_dbg(ATH6KL_DBG_ANY, " dist_flags     : 0x%X\n",
+       ath6kl_dbg(ATH6KL_DBG_CREDIT, " dist_flags     : 0x%X\n",
                   ep_dist->dist_flags);
-       ath6kl_dbg(ATH6KL_DBG_ANY, " cred_norm      : %d\n",
+       ath6kl_dbg(ATH6KL_DBG_CREDIT, " cred_norm      : %d\n",
                   ep_dist->cred_norm);
-       ath6kl_dbg(ATH6KL_DBG_ANY, " cred_min       : %d\n",
+       ath6kl_dbg(ATH6KL_DBG_CREDIT, " cred_min       : %d\n",
                   ep_dist->cred_min);
-       ath6kl_dbg(ATH6KL_DBG_ANY, " credits        : %d\n",
+       ath6kl_dbg(ATH6KL_DBG_CREDIT, " credits        : %d\n",
                   ep_dist->credits);
-       ath6kl_dbg(ATH6KL_DBG_ANY, " cred_assngd    : %d\n",
+       ath6kl_dbg(ATH6KL_DBG_CREDIT, " cred_assngd    : %d\n",
                   ep_dist->cred_assngd);
-       ath6kl_dbg(ATH6KL_DBG_ANY, " seek_cred      : %d\n",
+       ath6kl_dbg(ATH6KL_DBG_CREDIT, " seek_cred      : %d\n",
                   ep_dist->seek_cred);
-       ath6kl_dbg(ATH6KL_DBG_ANY, " cred_sz        : %d\n",
+       ath6kl_dbg(ATH6KL_DBG_CREDIT, " cred_sz        : %d\n",
                   ep_dist->cred_sz);
-       ath6kl_dbg(ATH6KL_DBG_ANY, " cred_per_msg   : %d\n",
+       ath6kl_dbg(ATH6KL_DBG_CREDIT, " cred_per_msg   : %d\n",
                   ep_dist->cred_per_msg);
-       ath6kl_dbg(ATH6KL_DBG_ANY, " cred_to_dist   : %d\n",
+       ath6kl_dbg(ATH6KL_DBG_CREDIT, " cred_to_dist   : %d\n",
                   ep_dist->cred_to_dist);
-       ath6kl_dbg(ATH6KL_DBG_ANY, " txq_depth      : %d\n",
-                  get_queue_depth(&((struct htc_endpoint *)
-                                    ep_dist->htc_rsvd)->txq));
-       ath6kl_dbg(ATH6KL_DBG_ANY,
+       ath6kl_dbg(ATH6KL_DBG_CREDIT, " txq_depth      : %d\n",
+                  get_queue_depth(&ep_dist->htc_ep->txq));
+       ath6kl_dbg(ATH6KL_DBG_CREDIT,
                   "----------------------------------\n");
 }
 
+/* FIXME: move to htc.c */
 void dump_cred_dist_stats(struct htc_target *target)
 {
        struct htc_endpoint_credit_dist *ep_list;
 
-       if (!AR_DBG_LVL_CHECK(ATH6KL_DBG_TRC))
+       if (!AR_DBG_LVL_CHECK(ATH6KL_DBG_CREDIT))
                return;
 
        list_for_each_entry(ep_list, &target->cred_dist_list, list)
                dump_cred_dist(ep_list);
 
-       ath6kl_dbg(ATH6KL_DBG_HTC_SEND, "ctxt:%p dist:%p\n",
-                  target->cred_dist_cntxt, NULL);
-       ath6kl_dbg(ATH6KL_DBG_TRC, "credit distribution, total : %d, free : %d\n",
-                  target->cred_dist_cntxt->total_avail_credits,
-                  target->cred_dist_cntxt->cur_free_credits);
+       ath6kl_dbg(ATH6KL_DBG_CREDIT,
+                  "credit distribution total %d free %d\n",
+                  target->credit_info->total_avail_credits,
+                  target->credit_info->cur_free_credits);
+}
+
+static int ath6kl_debugfs_open(struct inode *inode, struct file *file)
+{
+       file->private_data = inode->i_private;
+       return 0;
+}
+
+void ath6kl_debug_war(struct ath6kl *ar, enum ath6kl_war war)
+{
+       switch (war) {
+       case ATH6KL_WAR_INVALID_RATE:
+               ar->debug.war_stats.invalid_rate++;
+               break;
+       }
+}
+
+static ssize_t read_file_war_stats(struct file *file, char __user *user_buf,
+                                  size_t count, loff_t *ppos)
+{
+       struct ath6kl *ar = file->private_data;
+       char *buf;
+       unsigned int len = 0, buf_len = 1500;
+       ssize_t ret_cnt;
+
+       buf = kzalloc(buf_len, GFP_KERNEL);
+       if (!buf)
+               return -ENOMEM;
+
+       len += scnprintf(buf + len, buf_len - len, "\n");
+       len += scnprintf(buf + len, buf_len - len, "%25s\n",
+                        "Workaround stats");
+       len += scnprintf(buf + len, buf_len - len, "%25s\n\n",
+                        "=================");
+       len += scnprintf(buf + len, buf_len - len, "%20s %10u\n",
+                        "Invalid rates", ar->debug.war_stats.invalid_rate);
+
+       if (WARN_ON(len > buf_len))
+               len = buf_len;
+
+       ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len);
+
+       kfree(buf);
+       return ret_cnt;
+}
+
+static const struct file_operations fops_war_stats = {
+       .read = read_file_war_stats,
+       .open = ath6kl_debugfs_open,
+       .owner = THIS_MODULE,
+       .llseek = default_llseek,
+};
+
+static void ath6kl_debug_fwlog_add(struct ath6kl *ar, const void *buf,
+                                  size_t buf_len)
+{
+       struct circ_buf *fwlog = &ar->debug.fwlog_buf;
+       size_t space;
+       int i;
+
+       /* entries must all be equal size */
+       if (WARN_ON(buf_len != ATH6KL_FWLOG_SLOT_SIZE))
+               return;
+
+       space = CIRC_SPACE(fwlog->head, fwlog->tail, ATH6KL_FWLOG_SIZE);
+       if (space < buf_len)
+               /* discard oldest slot */
+               fwlog->tail = (fwlog->tail + ATH6KL_FWLOG_SLOT_SIZE) &
+                       (ATH6KL_FWLOG_SIZE - 1);
+
+       for (i = 0; i < buf_len; i += space) {
+               space = CIRC_SPACE_TO_END(fwlog->head, fwlog->tail,
+                                         ATH6KL_FWLOG_SIZE);
+
+               if ((size_t) space > buf_len - i)
+                       space = buf_len - i;
+
+               memcpy(&fwlog->buf[fwlog->head], buf, space);
+               fwlog->head = (fwlog->head + space) & (ATH6KL_FWLOG_SIZE - 1);
+       }
+
+}
+
+void ath6kl_debug_fwlog_event(struct ath6kl *ar, const void *buf, size_t len)
+{
+       struct ath6kl_fwlog_slot *slot = ar->debug.fwlog_tmp;
+       size_t slot_len;
+
+       if (WARN_ON(len > ATH6KL_FWLOG_PAYLOAD_SIZE))
+               return;
+
+       spin_lock_bh(&ar->debug.fwlog_lock);
+
+       slot->timestamp = cpu_to_le32(jiffies);
+       slot->length = cpu_to_le32(len);
+       memcpy(slot->payload, buf, len);
+
+       slot_len = sizeof(*slot) + len;
+
+       if (slot_len < ATH6KL_FWLOG_SLOT_SIZE)
+               memset(slot->payload + len, 0,
+                      ATH6KL_FWLOG_SLOT_SIZE - slot_len);
+
+       ath6kl_debug_fwlog_add(ar, slot, ATH6KL_FWLOG_SLOT_SIZE);
+
+       spin_unlock_bh(&ar->debug.fwlog_lock);
+}
+
+static bool ath6kl_debug_fwlog_empty(struct ath6kl *ar)
+{
+       return CIRC_CNT(ar->debug.fwlog_buf.head,
+                       ar->debug.fwlog_buf.tail,
+                       ATH6KL_FWLOG_SLOT_SIZE) == 0;
+}
+
+static ssize_t ath6kl_fwlog_read(struct file *file, char __user *user_buf,
+                                size_t count, loff_t *ppos)
+{
+       struct ath6kl *ar = file->private_data;
+       struct circ_buf *fwlog = &ar->debug.fwlog_buf;
+       size_t len = 0, buf_len = count;
+       ssize_t ret_cnt;
+       char *buf;
+       int ccnt;
+
+       buf = vmalloc(buf_len);
+       if (!buf)
+               return -ENOMEM;
+
+       /* read undelivered logs from firmware */
+       ath6kl_read_fwlogs(ar);
+
+       spin_lock_bh(&ar->debug.fwlog_lock);
+
+       while (len < buf_len && !ath6kl_debug_fwlog_empty(ar)) {
+               ccnt = CIRC_CNT_TO_END(fwlog->head, fwlog->tail,
+                                      ATH6KL_FWLOG_SIZE);
+
+               if ((size_t) ccnt > buf_len - len)
+                       ccnt = buf_len - len;
+
+               memcpy(buf + len, &fwlog->buf[fwlog->tail], ccnt);
+               len += ccnt;
+
+               fwlog->tail = (fwlog->tail + ccnt) &
+                       (ATH6KL_FWLOG_SIZE - 1);
+       }
+
+       spin_unlock_bh(&ar->debug.fwlog_lock);
+
+       if (WARN_ON(len > buf_len))
+               len = buf_len;
+
+       ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len);
+
+       vfree(buf);
+
+       return ret_cnt;
+}
+
+static const struct file_operations fops_fwlog = {
+       .open = ath6kl_debugfs_open,
+       .read = ath6kl_fwlog_read,
+       .owner = THIS_MODULE,
+       .llseek = default_llseek,
+};
+
+static ssize_t ath6kl_fwlog_mask_read(struct file *file, char __user *user_buf,
+                                     size_t count, loff_t *ppos)
+{
+       struct ath6kl *ar = file->private_data;
+       char buf[16];
+       int len;
+
+       len = snprintf(buf, sizeof(buf), "0x%x\n", ar->debug.fwlog_mask);
+
+       return simple_read_from_buffer(user_buf, count, ppos, buf, len);
+}
+
+static ssize_t ath6kl_fwlog_mask_write(struct file *file,
+                                      const char __user *user_buf,
+                                      size_t count, loff_t *ppos)
+{
+       struct ath6kl *ar = file->private_data;
+       int ret;
+
+       ret = kstrtou32_from_user(user_buf, count, 0, &ar->debug.fwlog_mask);
+       if (ret)
+               return ret;
+
+       ret = ath6kl_wmi_config_debug_module_cmd(ar->wmi,
+                                                ATH6KL_FWLOG_VALID_MASK,
+                                                ar->debug.fwlog_mask);
+       if (ret)
+               return ret;
+
+       return count;
+}
+
+static const struct file_operations fops_fwlog_mask = {
+       .open = ath6kl_debugfs_open,
+       .read = ath6kl_fwlog_mask_read,
+       .write = ath6kl_fwlog_mask_write,
+       .owner = THIS_MODULE,
+       .llseek = default_llseek,
+};
+
+static ssize_t read_file_tgt_stats(struct file *file, char __user *user_buf,
+                                  size_t count, loff_t *ppos)
+{
+       struct ath6kl *ar = file->private_data;
+       struct ath6kl_vif *vif;
+       struct target_stats *tgt_stats;
+       char *buf;
+       unsigned int len = 0, buf_len = 1500;
+       int i;
+       long left;
+       ssize_t ret_cnt;
+
+       vif = ath6kl_vif_first(ar);
+       if (!vif)
+               return -EIO;
+
+       tgt_stats = &vif->target_stats;
+
+       buf = kzalloc(buf_len, GFP_KERNEL);
+       if (!buf)
+               return -ENOMEM;
+
+       if (down_interruptible(&ar->sem)) {
+               kfree(buf);
+               return -EBUSY;
+       }
+
+       set_bit(STATS_UPDATE_PEND, &vif->flags);
+
+       if (ath6kl_wmi_get_stats_cmd(ar->wmi, 0)) {
+               up(&ar->sem);
+               kfree(buf);
+               return -EIO;
+       }
+
+       left = wait_event_interruptible_timeout(ar->event_wq,
+                                               !test_bit(STATS_UPDATE_PEND,
+                                               &vif->flags), WMI_TIMEOUT);
+
+       up(&ar->sem);
+
+       if (left <= 0) {
+               kfree(buf);
+               return -ETIMEDOUT;
+       }
+
+       len += scnprintf(buf + len, buf_len - len, "\n");
+       len += scnprintf(buf + len, buf_len - len, "%25s\n",
+                        "Target Tx stats");
+       len += scnprintf(buf + len, buf_len - len, "%25s\n\n",
+                        "=================");
+       len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
+                        "Ucast packets", tgt_stats->tx_ucast_pkt);
+       len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
+                        "Bcast packets", tgt_stats->tx_bcast_pkt);
+       len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
+                        "Ucast byte", tgt_stats->tx_ucast_byte);
+       len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
+                        "Bcast byte", tgt_stats->tx_bcast_byte);
+       len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
+                        "Rts success cnt", tgt_stats->tx_rts_success_cnt);
+       for (i = 0; i < 4; i++)
+               len += scnprintf(buf + len, buf_len - len,
+                                "%18s %d %10llu\n", "PER on ac",
+                                i, tgt_stats->tx_pkt_per_ac[i]);
+       len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
+                        "Error", tgt_stats->tx_err);
+       len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
+                        "Fail count", tgt_stats->tx_fail_cnt);
+       len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
+                        "Retry count", tgt_stats->tx_retry_cnt);
+       len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
+                        "Multi retry cnt", tgt_stats->tx_mult_retry_cnt);
+       len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
+                        "Rts fail cnt", tgt_stats->tx_rts_fail_cnt);
+       len += scnprintf(buf + len, buf_len - len, "%25s %10llu\n\n",
+                        "TKIP counter measure used",
+                        tgt_stats->tkip_cnter_measures_invoked);
+
+       len += scnprintf(buf + len, buf_len - len, "%25s\n",
+                        "Target Rx stats");
+       len += scnprintf(buf + len, buf_len - len, "%25s\n",
+                        "=================");
+
+       len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
+                        "Ucast packets", tgt_stats->rx_ucast_pkt);
+       len += scnprintf(buf + len, buf_len - len, "%20s %10d\n",
+                        "Ucast Rate", tgt_stats->rx_ucast_rate);
+       len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
+                        "Bcast packets", tgt_stats->rx_bcast_pkt);
+       len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
+                        "Ucast byte", tgt_stats->rx_ucast_byte);
+       len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
+                        "Bcast byte", tgt_stats->rx_bcast_byte);
+       len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
+                        "Fragmented pkt", tgt_stats->rx_frgment_pkt);
+       len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
+                        "Error", tgt_stats->rx_err);
+       len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
+                        "CRC Err", tgt_stats->rx_crc_err);
+       len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
+                        "Key chache miss", tgt_stats->rx_key_cache_miss);
+       len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
+                        "Decrypt Err", tgt_stats->rx_decrypt_err);
+       len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
+                        "Duplicate frame", tgt_stats->rx_dupl_frame);
+       len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
+                        "Tkip Mic failure", tgt_stats->tkip_local_mic_fail);
+       len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
+                        "TKIP format err", tgt_stats->tkip_fmt_err);
+       len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
+                        "CCMP format Err", tgt_stats->ccmp_fmt_err);
+       len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n\n",
+                        "CCMP Replay Err", tgt_stats->ccmp_replays);
+
+       len += scnprintf(buf + len, buf_len - len, "%25s\n",
+                        "Misc Target stats");
+       len += scnprintf(buf + len, buf_len - len, "%25s\n",
+                        "=================");
+       len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
+                        "Beacon Miss count", tgt_stats->cs_bmiss_cnt);
+       len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
+                        "Num Connects", tgt_stats->cs_connect_cnt);
+       len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
+                        "Num disconnects", tgt_stats->cs_discon_cnt);
+       len += scnprintf(buf + len, buf_len - len, "%20s %10d\n",
+                        "Beacon avg rssi", tgt_stats->cs_ave_beacon_rssi);
+
+       if (len > buf_len)
+               len = buf_len;
+
+       ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len);
+
+       kfree(buf);
+       return ret_cnt;
+}
+
+static const struct file_operations fops_tgt_stats = {
+       .read = read_file_tgt_stats,
+       .open = ath6kl_debugfs_open,
+       .owner = THIS_MODULE,
+       .llseek = default_llseek,
+};
+
+#define print_credit_info(fmt_str, ep_list_field)              \
+       (len += scnprintf(buf + len, buf_len - len, fmt_str,    \
+                        ep_list->ep_list_field))
+#define CREDIT_INFO_DISPLAY_STRING_LEN 200
+#define CREDIT_INFO_LEN        128
+
+static ssize_t read_file_credit_dist_stats(struct file *file,
+                                          char __user *user_buf,
+                                          size_t count, loff_t *ppos)
+{
+       struct ath6kl *ar = file->private_data;
+       struct htc_target *target = ar->htc_target;
+       struct htc_endpoint_credit_dist *ep_list;
+       char *buf;
+       unsigned int buf_len, len = 0;
+       ssize_t ret_cnt;
+
+       buf_len = CREDIT_INFO_DISPLAY_STRING_LEN +
+                 get_queue_depth(&target->cred_dist_list) * CREDIT_INFO_LEN;
+       buf = kzalloc(buf_len, GFP_KERNEL);
+       if (!buf)
+               return -ENOMEM;
+
+       len += scnprintf(buf + len, buf_len - len, "%25s%5d\n",
+                        "Total Avail Credits: ",
+                        target->credit_info->total_avail_credits);
+       len += scnprintf(buf + len, buf_len - len, "%25s%5d\n",
+                        "Free credits :",
+                        target->credit_info->cur_free_credits);
+
+       len += scnprintf(buf + len, buf_len - len,
+                        " Epid  Flags    Cred_norm  Cred_min  Credits  Cred_assngd"
+                        "  Seek_cred  Cred_sz  Cred_per_msg  Cred_to_dist"
+                        "  qdepth\n");
+
+       list_for_each_entry(ep_list, &target->cred_dist_list, list) {
+               print_credit_info("  %2d", endpoint);
+               print_credit_info("%10x", dist_flags);
+               print_credit_info("%8d", cred_norm);
+               print_credit_info("%9d", cred_min);
+               print_credit_info("%9d", credits);
+               print_credit_info("%10d", cred_assngd);
+               print_credit_info("%13d", seek_cred);
+               print_credit_info("%12d", cred_sz);
+               print_credit_info("%9d", cred_per_msg);
+               print_credit_info("%14d", cred_to_dist);
+               len += scnprintf(buf + len, buf_len - len, "%12d\n",
+                                get_queue_depth(&ep_list->htc_ep->txq));
+       }
+
+       if (len > buf_len)
+               len = buf_len;
+
+       ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len);
+       kfree(buf);
+       return ret_cnt;
+}
+
+static const struct file_operations fops_credit_dist_stats = {
+       .read = read_file_credit_dist_stats,
+       .open = ath6kl_debugfs_open,
+       .owner = THIS_MODULE,
+       .llseek = default_llseek,
+};
+
+static unsigned int print_endpoint_stat(struct htc_target *target, char *buf,
+                                       unsigned int buf_len, unsigned int len,
+                                       int offset, const char *name)
+{
+       int i;
+       struct htc_endpoint_stats *ep_st;
+       u32 *counter;
+
+       len += scnprintf(buf + len, buf_len - len, "%s:", name);
+       for (i = 0; i < ENDPOINT_MAX; i++) {
+               ep_st = &target->endpoint[i].ep_st;
+               counter = ((u32 *) ep_st) + (offset / 4);
+               len += scnprintf(buf + len, buf_len - len, " %u", *counter);
+       }
+       len += scnprintf(buf + len, buf_len - len, "\n");
+
+       return len;
+}
+
+static ssize_t ath6kl_endpoint_stats_read(struct file *file,
+                                         char __user *user_buf,
+                                         size_t count, loff_t *ppos)
+{
+       struct ath6kl *ar = file->private_data;
+       struct htc_target *target = ar->htc_target;
+       char *buf;
+       unsigned int buf_len, len = 0;
+       ssize_t ret_cnt;
+
+       buf_len = sizeof(struct htc_endpoint_stats) / sizeof(u32) *
+               (25 + ENDPOINT_MAX * 11);
+       buf = kmalloc(buf_len, GFP_KERNEL);
+       if (!buf)
+               return -ENOMEM;
+
+#define EPSTAT(name)                                                   \
+       len = print_endpoint_stat(target, buf, buf_len, len,            \
+                                 offsetof(struct htc_endpoint_stats, name), \
+                                 #name)
+       EPSTAT(cred_low_indicate);
+       EPSTAT(tx_issued);
+       EPSTAT(tx_pkt_bundled);
+       EPSTAT(tx_bundles);
+       EPSTAT(tx_dropped);
+       EPSTAT(tx_cred_rpt);
+       EPSTAT(cred_rpt_from_rx);
+       EPSTAT(cred_rpt_from_other);
+       EPSTAT(cred_rpt_ep0);
+       EPSTAT(cred_from_rx);
+       EPSTAT(cred_from_other);
+       EPSTAT(cred_from_ep0);
+       EPSTAT(cred_cosumd);
+       EPSTAT(cred_retnd);
+       EPSTAT(rx_pkts);
+       EPSTAT(rx_lkahds);
+       EPSTAT(rx_bundl);
+       EPSTAT(rx_bundle_lkahd);
+       EPSTAT(rx_bundle_from_hdr);
+       EPSTAT(rx_alloc_thresh_hit);
+       EPSTAT(rxalloc_thresh_byte);
+#undef EPSTAT
+
+       if (len > buf_len)
+               len = buf_len;
+
+       ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len);
+       kfree(buf);
+       return ret_cnt;
+}
+
+static ssize_t ath6kl_endpoint_stats_write(struct file *file,
+                                          const char __user *user_buf,
+                                          size_t count, loff_t *ppos)
+{
+       struct ath6kl *ar = file->private_data;
+       struct htc_target *target = ar->htc_target;
+       int ret, i;
+       u32 val;
+       struct htc_endpoint_stats *ep_st;
+
+       ret = kstrtou32_from_user(user_buf, count, 0, &val);
+       if (ret)
+               return ret;
+       if (val == 0) {
+               for (i = 0; i < ENDPOINT_MAX; i++) {
+                       ep_st = &target->endpoint[i].ep_st;
+                       memset(ep_st, 0, sizeof(*ep_st));
+               }
+       }
+
+       return count;
+}
+
+static const struct file_operations fops_endpoint_stats = {
+       .open = ath6kl_debugfs_open,
+       .read = ath6kl_endpoint_stats_read,
+       .write = ath6kl_endpoint_stats_write,
+       .owner = THIS_MODULE,
+       .llseek = default_llseek,
+};
+
+static unsigned long ath6kl_get_num_reg(void)
+{
+       int i;
+       unsigned long n_reg = 0;
+
+       for (i = 0; i < ARRAY_SIZE(diag_reg); i++)
+               n_reg = n_reg +
+                    (diag_reg[i].reg_end - diag_reg[i].reg_start) / 4 + 1;
+
+       return n_reg;
+}
+
+static bool ath6kl_dbg_is_diag_reg_valid(u32 reg_addr)
+{
+       int i;
+
+       for (i = 0; i < ARRAY_SIZE(diag_reg); i++) {
+               if (reg_addr >= diag_reg[i].reg_start &&
+                   reg_addr <= diag_reg[i].reg_end)
+                       return true;
+       }
+
+       return false;
+}
+
+static ssize_t ath6kl_regread_read(struct file *file, char __user *user_buf,
+                                   size_t count, loff_t *ppos)
+{
+       struct ath6kl *ar = file->private_data;
+       u8 buf[50];
+       unsigned int len = 0;
+
+       if (ar->debug.dbgfs_diag_reg)
+               len += scnprintf(buf + len, sizeof(buf) - len, "0x%x\n",
+                               ar->debug.dbgfs_diag_reg);
+       else
+               len += scnprintf(buf + len, sizeof(buf) - len,
+                                "All diag registers\n");
+
+       return simple_read_from_buffer(user_buf, count, ppos, buf, len);
+}
+
+static ssize_t ath6kl_regread_write(struct file *file,
+                                   const char __user *user_buf,
+                                   size_t count, loff_t *ppos)
+{
+       struct ath6kl *ar = file->private_data;
+       u8 buf[50];
+       unsigned int len;
+       unsigned long reg_addr;
+
+       len = min(count, sizeof(buf) - 1);
+       if (copy_from_user(buf, user_buf, len))
+               return -EFAULT;
+
+       buf[len] = '\0';
+
+       if (strict_strtoul(buf, 0, &reg_addr))
+               return -EINVAL;
+
+       if ((reg_addr % 4) != 0)
+               return -EINVAL;
+
+       if (reg_addr && !ath6kl_dbg_is_diag_reg_valid(reg_addr))
+               return -EINVAL;
+
+       ar->debug.dbgfs_diag_reg = reg_addr;
+
+       return count;
+}
+
+static const struct file_operations fops_diag_reg_read = {
+       .read = ath6kl_regread_read,
+       .write = ath6kl_regread_write,
+       .open = ath6kl_debugfs_open,
+       .owner = THIS_MODULE,
+       .llseek = default_llseek,
+};
+
+static int ath6kl_regdump_open(struct inode *inode, struct file *file)
+{
+       struct ath6kl *ar = inode->i_private;
+       u8 *buf;
+       unsigned long int reg_len;
+       unsigned int len = 0, n_reg;
+       u32 addr;
+       __le32 reg_val;
+       int i, status;
+
+       /* Dump all the registers if no register is specified */
+       if (!ar->debug.dbgfs_diag_reg)
+               n_reg = ath6kl_get_num_reg();
+       else
+               n_reg = 1;
+
+       reg_len = n_reg * REG_OUTPUT_LEN_PER_LINE;
+       if (n_reg > 1)
+               reg_len += REGTYPE_STR_LEN;
+
+       buf = vmalloc(reg_len);
+       if (!buf)
+               return -ENOMEM;
+
+       if (n_reg == 1) {
+               addr = ar->debug.dbgfs_diag_reg;
+
+               status = ath6kl_diag_read32(ar,
+                               TARG_VTOP(ar->target_type, addr),
+                               (u32 *)&reg_val);
+               if (status)
+                       goto fail_reg_read;
+
+               len += scnprintf(buf + len, reg_len - len,
+                                "0x%06x 0x%08x\n", addr, le32_to_cpu(reg_val));
+               goto done;
+       }
+
+       for (i = 0; i < ARRAY_SIZE(diag_reg); i++) {
+               len += scnprintf(buf + len, reg_len - len,
+                               "%s\n", diag_reg[i].reg_info);
+               for (addr = diag_reg[i].reg_start;
+                    addr <= diag_reg[i].reg_end; addr += 4) {
+                       status = ath6kl_diag_read32(ar,
+                                       TARG_VTOP(ar->target_type, addr),
+                                       (u32 *)&reg_val);
+                       if (status)
+                               goto fail_reg_read;
+
+                       len += scnprintf(buf + len, reg_len - len,
+                                       "0x%06x 0x%08x\n",
+                                       addr, le32_to_cpu(reg_val));
+               }
+       }
+
+done:
+       file->private_data = buf;
+       return 0;
+
+fail_reg_read:
+       ath6kl_warn("Unable to read memory:%u\n", addr);
+       vfree(buf);
+       return -EIO;
+}
+
+static ssize_t ath6kl_regdump_read(struct file *file, char __user *user_buf,
+                                 size_t count, loff_t *ppos)
+{
+       u8 *buf = file->private_data;
+       return simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
+}
+
+static int ath6kl_regdump_release(struct inode *inode, struct file *file)
+{
+       vfree(file->private_data);
+       return 0;
+}
+
+static const struct file_operations fops_reg_dump = {
+       .open = ath6kl_regdump_open,
+       .read = ath6kl_regdump_read,
+       .release = ath6kl_regdump_release,
+       .owner = THIS_MODULE,
+       .llseek = default_llseek,
+};
+
+static ssize_t ath6kl_lrssi_roam_write(struct file *file,
+                                      const char __user *user_buf,
+                                      size_t count, loff_t *ppos)
+{
+       struct ath6kl *ar = file->private_data;
+       unsigned long lrssi_roam_threshold;
+       char buf[32];
+       ssize_t len;
+
+       len = min(count, sizeof(buf) - 1);
+       if (copy_from_user(buf, user_buf, len))
+               return -EFAULT;
+
+       buf[len] = '\0';
+       if (strict_strtoul(buf, 0, &lrssi_roam_threshold))
+               return -EINVAL;
+
+       ar->lrssi_roam_threshold = lrssi_roam_threshold;
+
+       ath6kl_wmi_set_roam_lrssi_cmd(ar->wmi, ar->lrssi_roam_threshold);
+
+       return count;
+}
+
+static ssize_t ath6kl_lrssi_roam_read(struct file *file,
+                                     char __user *user_buf,
+                                     size_t count, loff_t *ppos)
+{
+       struct ath6kl *ar = file->private_data;
+       char buf[32];
+       unsigned int len;
+
+       len = snprintf(buf, sizeof(buf), "%u\n", ar->lrssi_roam_threshold);
+
+       return simple_read_from_buffer(user_buf, count, ppos, buf, len);
+}
+
+static const struct file_operations fops_lrssi_roam_threshold = {
+       .read = ath6kl_lrssi_roam_read,
+       .write = ath6kl_lrssi_roam_write,
+       .open = ath6kl_debugfs_open,
+       .owner = THIS_MODULE,
+       .llseek = default_llseek,
+};
+
+static ssize_t ath6kl_regwrite_read(struct file *file,
+                                   char __user *user_buf,
+                                   size_t count, loff_t *ppos)
+{
+       struct ath6kl *ar = file->private_data;
+       u8 buf[32];
+       unsigned int len = 0;
+
+       len = scnprintf(buf, sizeof(buf), "Addr: 0x%x Val: 0x%x\n",
+                       ar->debug.diag_reg_addr_wr, ar->debug.diag_reg_val_wr);
+
+       return simple_read_from_buffer(user_buf, count, ppos, buf, len);
+}
+
+static ssize_t ath6kl_regwrite_write(struct file *file,
+                                    const char __user *user_buf,
+                                    size_t count, loff_t *ppos)
+{
+       struct ath6kl *ar = file->private_data;
+       char buf[32];
+       char *sptr, *token;
+       unsigned int len = 0;
+       u32 reg_addr, reg_val;
+
+       len = min(count, sizeof(buf) - 1);
+       if (copy_from_user(buf, user_buf, len))
+               return -EFAULT;
+
+       buf[len] = '\0';
+       sptr = buf;
+
+       token = strsep(&sptr, "=");
+       if (!token)
+               return -EINVAL;
+
+       if (kstrtou32(token, 0, &reg_addr))
+               return -EINVAL;
+
+       if (!ath6kl_dbg_is_diag_reg_valid(reg_addr))
+               return -EINVAL;
+
+       if (kstrtou32(sptr, 0, &reg_val))
+               return -EINVAL;
+
+       ar->debug.diag_reg_addr_wr = reg_addr;
+       ar->debug.diag_reg_val_wr = reg_val;
+
+       if (ath6kl_diag_write32(ar, ar->debug.diag_reg_addr_wr,
+                               cpu_to_le32(ar->debug.diag_reg_val_wr)))
+               return -EIO;
+
+       return count;
+}
+
+static const struct file_operations fops_diag_reg_write = {
+       .read = ath6kl_regwrite_read,
+       .write = ath6kl_regwrite_write,
+       .open = ath6kl_debugfs_open,
+       .owner = THIS_MODULE,
+       .llseek = default_llseek,
+};
+
+int ath6kl_debug_roam_tbl_event(struct ath6kl *ar, const void *buf,
+                               size_t len)
+{
+       const struct wmi_target_roam_tbl *tbl;
+       u16 num_entries;
+
+       if (len < sizeof(*tbl))
+               return -EINVAL;
+
+       tbl = (const struct wmi_target_roam_tbl *) buf;
+       num_entries = le16_to_cpu(tbl->num_entries);
+       if (sizeof(*tbl) + num_entries * sizeof(struct wmi_bss_roam_info) >
+           len)
+               return -EINVAL;
+
+       if (ar->debug.roam_tbl == NULL ||
+           ar->debug.roam_tbl_len < (unsigned int) len) {
+               kfree(ar->debug.roam_tbl);
+               ar->debug.roam_tbl = kmalloc(len, GFP_ATOMIC);
+               if (ar->debug.roam_tbl == NULL)
+                       return -ENOMEM;
+       }
+
+       memcpy(ar->debug.roam_tbl, buf, len);
+       ar->debug.roam_tbl_len = len;
+
+       if (test_bit(ROAM_TBL_PEND, &ar->flag)) {
+               clear_bit(ROAM_TBL_PEND, &ar->flag);
+               wake_up(&ar->event_wq);
+       }
+
+       return 0;
+}
+
+static ssize_t ath6kl_roam_table_read(struct file *file, char __user *user_buf,
+                                     size_t count, loff_t *ppos)
+{
+       struct ath6kl *ar = file->private_data;
+       int ret;
+       long left;
+       struct wmi_target_roam_tbl *tbl;
+       u16 num_entries, i;
+       char *buf;
+       unsigned int len, buf_len;
+       ssize_t ret_cnt;
+
+       if (down_interruptible(&ar->sem))
+               return -EBUSY;
+
+       set_bit(ROAM_TBL_PEND, &ar->flag);
+
+       ret = ath6kl_wmi_get_roam_tbl_cmd(ar->wmi);
+       if (ret) {
+               up(&ar->sem);
+               return ret;
+       }
+
+       left = wait_event_interruptible_timeout(
+               ar->event_wq, !test_bit(ROAM_TBL_PEND, &ar->flag), WMI_TIMEOUT);
+       up(&ar->sem);
+
+       if (left <= 0)
+               return -ETIMEDOUT;
+
+       if (ar->debug.roam_tbl == NULL)
+               return -ENOMEM;
+
+       tbl = (struct wmi_target_roam_tbl *) ar->debug.roam_tbl;
+       num_entries = le16_to_cpu(tbl->num_entries);
+
+       buf_len = 100 + num_entries * 100;
+       buf = kzalloc(buf_len, GFP_KERNEL);
+       if (buf == NULL)
+               return -ENOMEM;
+       len = 0;
+       len += scnprintf(buf + len, buf_len - len,
+                        "roam_mode=%u\n\n"
+                        "# roam_util bssid rssi rssidt last_rssi util bias\n",
+                        le16_to_cpu(tbl->roam_mode));
+
+       for (i = 0; i < num_entries; i++) {
+               struct wmi_bss_roam_info *info = &tbl->info[i];
+               len += scnprintf(buf + len, buf_len - len,
+                                "%d %pM %d %d %d %d %d\n",
+                                a_sle32_to_cpu(info->roam_util), info->bssid,
+                                info->rssi, info->rssidt, info->last_rssi,
+                                info->util, info->bias);
+       }
+
+       if (len > buf_len)
+               len = buf_len;
+
+       ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len);
+
+       kfree(buf);
+       return ret_cnt;
+}
+
+static const struct file_operations fops_roam_table = {
+       .read = ath6kl_roam_table_read,
+       .open = ath6kl_debugfs_open,
+       .owner = THIS_MODULE,
+       .llseek = default_llseek,
+};
+
+static ssize_t ath6kl_force_roam_write(struct file *file,
+                                      const char __user *user_buf,
+                                      size_t count, loff_t *ppos)
+{
+       struct ath6kl *ar = file->private_data;
+       int ret;
+       char buf[20];
+       size_t len;
+       u8 bssid[ETH_ALEN];
+       int i;
+       int addr[ETH_ALEN];
+
+       len = min(count, sizeof(buf) - 1);
+       if (copy_from_user(buf, user_buf, len))
+               return -EFAULT;
+       buf[len] = '\0';
+
+       if (sscanf(buf, "%02x:%02x:%02x:%02x:%02x:%02x",
+                  &addr[0], &addr[1], &addr[2], &addr[3], &addr[4], &addr[5])
+           != ETH_ALEN)
+               return -EINVAL;
+       for (i = 0; i < ETH_ALEN; i++)
+               bssid[i] = addr[i];
+
+       ret = ath6kl_wmi_force_roam_cmd(ar->wmi, bssid);
+       if (ret)
+               return ret;
+
+       return count;
+}
+
+static const struct file_operations fops_force_roam = {
+       .write = ath6kl_force_roam_write,
+       .open = ath6kl_debugfs_open,
+       .owner = THIS_MODULE,
+       .llseek = default_llseek,
+};
+
+static ssize_t ath6kl_roam_mode_write(struct file *file,
+                                     const char __user *user_buf,
+                                     size_t count, loff_t *ppos)
+{
+       struct ath6kl *ar = file->private_data;
+       int ret;
+       char buf[20];
+       size_t len;
+       enum wmi_roam_mode mode;
+
+       len = min(count, sizeof(buf) - 1);
+       if (copy_from_user(buf, user_buf, len))
+               return -EFAULT;
+       buf[len] = '\0';
+       if (len > 0 && buf[len - 1] == '\n')
+               buf[len - 1] = '\0';
+
+       if (strcasecmp(buf, "default") == 0)
+               mode = WMI_DEFAULT_ROAM_MODE;
+       else if (strcasecmp(buf, "bssbias") == 0)
+               mode = WMI_HOST_BIAS_ROAM_MODE;
+       else if (strcasecmp(buf, "lock") == 0)
+               mode = WMI_LOCK_BSS_MODE;
+       else
+               return -EINVAL;
+
+       ret = ath6kl_wmi_set_roam_mode_cmd(ar->wmi, mode);
+       if (ret)
+               return ret;
+
+       return count;
+}
+
+static const struct file_operations fops_roam_mode = {
+       .write = ath6kl_roam_mode_write,
+       .open = ath6kl_debugfs_open,
+       .owner = THIS_MODULE,
+       .llseek = default_llseek,
+};
+
+void ath6kl_debug_set_keepalive(struct ath6kl *ar, u8 keepalive)
+{
+       ar->debug.keepalive = keepalive;
+}
+
+static ssize_t ath6kl_keepalive_read(struct file *file, char __user *user_buf,
+                                    size_t count, loff_t *ppos)
+{
+       struct ath6kl *ar = file->private_data;
+       char buf[16];
+       int len;
+
+       len = snprintf(buf, sizeof(buf), "%u\n", ar->debug.keepalive);
+
+       return simple_read_from_buffer(user_buf, count, ppos, buf, len);
+}
+
+static ssize_t ath6kl_keepalive_write(struct file *file,
+                                     const char __user *user_buf,
+                                     size_t count, loff_t *ppos)
+{
+       struct ath6kl *ar = file->private_data;
+       int ret;
+       u8 val;
+
+       ret = kstrtou8_from_user(user_buf, count, 0, &val);
+       if (ret)
+               return ret;
+
+       ret = ath6kl_wmi_set_keepalive_cmd(ar->wmi, 0, val);
+       if (ret)
+               return ret;
+
+       return count;
+}
+
+static const struct file_operations fops_keepalive = {
+       .open = ath6kl_debugfs_open,
+       .read = ath6kl_keepalive_read,
+       .write = ath6kl_keepalive_write,
+       .owner = THIS_MODULE,
+       .llseek = default_llseek,
+};
+
+void ath6kl_debug_set_disconnect_timeout(struct ath6kl *ar, u8 timeout)
+{
+       ar->debug.disc_timeout = timeout;
+}
+
+static ssize_t ath6kl_disconnect_timeout_read(struct file *file,
+                                             char __user *user_buf,
+                                             size_t count, loff_t *ppos)
+{
+       struct ath6kl *ar = file->private_data;
+       char buf[16];
+       int len;
+
+       len = snprintf(buf, sizeof(buf), "%u\n", ar->debug.disc_timeout);
+
+       return simple_read_from_buffer(user_buf, count, ppos, buf, len);
+}
+
+static ssize_t ath6kl_disconnect_timeout_write(struct file *file,
+                                              const char __user *user_buf,
+                                              size_t count, loff_t *ppos)
+{
+       struct ath6kl *ar = file->private_data;
+       int ret;
+       u8 val;
+
+       ret = kstrtou8_from_user(user_buf, count, 0, &val);
+       if (ret)
+               return ret;
+
+       ret = ath6kl_wmi_disctimeout_cmd(ar->wmi, 0, val);
+       if (ret)
+               return ret;
+
+       return count;
+}
+
+static const struct file_operations fops_disconnect_timeout = {
+       .open = ath6kl_debugfs_open,
+       .read = ath6kl_disconnect_timeout_read,
+       .write = ath6kl_disconnect_timeout_write,
+       .owner = THIS_MODULE,
+       .llseek = default_llseek,
+};
+
+static ssize_t ath6kl_create_qos_write(struct file *file,
+                                               const char __user *user_buf,
+                                               size_t count, loff_t *ppos)
+{
+
+       struct ath6kl *ar = file->private_data;
+       struct ath6kl_vif *vif;
+       char buf[100];
+       ssize_t len;
+       char *sptr, *token;
+       struct wmi_create_pstream_cmd pstream;
+       u32 val32;
+       u16 val16;
+
+       vif = ath6kl_vif_first(ar);
+       if (!vif)
+               return -EIO;
+
+       len = min(count, sizeof(buf) - 1);
+       if (copy_from_user(buf, user_buf, len))
+               return -EFAULT;
+       buf[len] = '\0';
+       sptr = buf;
+
+       token = strsep(&sptr, " ");
+       if (!token)
+               return -EINVAL;
+       if (kstrtou8(token, 0, &pstream.user_pri))
+               return -EINVAL;
+
+       token = strsep(&sptr, " ");
+       if (!token)
+               return -EINVAL;
+       if (kstrtou8(token, 0, &pstream.traffic_direc))
+               return -EINVAL;
+
+       token = strsep(&sptr, " ");
+       if (!token)
+               return -EINVAL;
+       if (kstrtou8(token, 0, &pstream.traffic_class))
+               return -EINVAL;
+
+       token = strsep(&sptr, " ");
+       if (!token)
+               return -EINVAL;
+       if (kstrtou8(token, 0, &pstream.traffic_type))
+               return -EINVAL;
+
+       token = strsep(&sptr, " ");
+       if (!token)
+               return -EINVAL;
+       if (kstrtou8(token, 0, &pstream.voice_psc_cap))
+               return -EINVAL;
+
+       token = strsep(&sptr, " ");
+       if (!token)
+               return -EINVAL;
+       if (kstrtou32(token, 0, &val32))
+               return -EINVAL;
+       pstream.min_service_int = cpu_to_le32(val32);
+
+       token = strsep(&sptr, " ");
+       if (!token)
+               return -EINVAL;
+       if (kstrtou32(token, 0, &val32))
+               return -EINVAL;
+       pstream.max_service_int = cpu_to_le32(val32);
+
+       token = strsep(&sptr, " ");
+       if (!token)
+               return -EINVAL;
+       if (kstrtou32(token, 0, &val32))
+               return -EINVAL;
+       pstream.inactivity_int = cpu_to_le32(val32);
+
+       token = strsep(&sptr, " ");
+       if (!token)
+               return -EINVAL;
+       if (kstrtou32(token, 0, &val32))
+               return -EINVAL;
+       pstream.suspension_int = cpu_to_le32(val32);
+
+       token = strsep(&sptr, " ");
+       if (!token)
+               return -EINVAL;
+       if (kstrtou32(token, 0, &val32))
+               return -EINVAL;
+       pstream.service_start_time = cpu_to_le32(val32);
+
+       token = strsep(&sptr, " ");
+       if (!token)
+               return -EINVAL;
+       if (kstrtou8(token, 0, &pstream.tsid))
+               return -EINVAL;
+
+       token = strsep(&sptr, " ");
+       if (!token)
+               return -EINVAL;
+       if (kstrtou16(token, 0, &val16))
+               return -EINVAL;
+       pstream.nominal_msdu = cpu_to_le16(val16);
+
+       token = strsep(&sptr, " ");
+       if (!token)
+               return -EINVAL;
+       if (kstrtou16(token, 0, &val16))
+               return -EINVAL;
+       pstream.max_msdu = cpu_to_le16(val16);
+
+       token = strsep(&sptr, " ");
+       if (!token)
+               return -EINVAL;
+       if (kstrtou32(token, 0, &val32))
+               return -EINVAL;
+       pstream.min_data_rate = cpu_to_le32(val32);
+
+       token = strsep(&sptr, " ");
+       if (!token)
+               return -EINVAL;
+       if (kstrtou32(token, 0, &val32))
+               return -EINVAL;
+       pstream.mean_data_rate = cpu_to_le32(val32);
+
+       token = strsep(&sptr, " ");
+       if (!token)
+               return -EINVAL;
+       if (kstrtou32(token, 0, &val32))
+               return -EINVAL;
+       pstream.peak_data_rate = cpu_to_le32(val32);
+
+       token = strsep(&sptr, " ");
+       if (!token)
+               return -EINVAL;
+       if (kstrtou32(token, 0, &val32))
+               return -EINVAL;
+       pstream.max_burst_size = cpu_to_le32(val32);
+
+       token = strsep(&sptr, " ");
+       if (!token)
+               return -EINVAL;
+       if (kstrtou32(token, 0, &val32))
+               return -EINVAL;
+       pstream.delay_bound = cpu_to_le32(val32);
+
+       token = strsep(&sptr, " ");
+       if (!token)
+               return -EINVAL;
+       if (kstrtou32(token, 0, &val32))
+               return -EINVAL;
+       pstream.min_phy_rate = cpu_to_le32(val32);
+
+       token = strsep(&sptr, " ");
+       if (!token)
+               return -EINVAL;
+       if (kstrtou32(token, 0, &val32))
+               return -EINVAL;
+       pstream.sba = cpu_to_le32(val32);
+
+       token = strsep(&sptr, " ");
+       if (!token)
+               return -EINVAL;
+       if (kstrtou32(token, 0, &val32))
+               return -EINVAL;
+       pstream.medium_time = cpu_to_le32(val32);
+
+       ath6kl_wmi_create_pstream_cmd(ar->wmi, vif->fw_vif_idx, &pstream);
+
+       return count;
+}
+
+static const struct file_operations fops_create_qos = {
+       .write = ath6kl_create_qos_write,
+       .open = ath6kl_debugfs_open,
+       .owner = THIS_MODULE,
+       .llseek = default_llseek,
+};
+
+static ssize_t ath6kl_delete_qos_write(struct file *file,
+                               const char __user *user_buf,
+                               size_t count, loff_t *ppos)
+{
+
+       struct ath6kl *ar = file->private_data;
+       struct ath6kl_vif *vif;
+       char buf[100];
+       ssize_t len;
+       char *sptr, *token;
+       u8 traffic_class;
+       u8 tsid;
+
+       vif = ath6kl_vif_first(ar);
+       if (!vif)
+               return -EIO;
+
+       len = min(count, sizeof(buf) - 1);
+       if (copy_from_user(buf, user_buf, len))
+               return -EFAULT;
+       buf[len] = '\0';
+       sptr = buf;
+
+       token = strsep(&sptr, " ");
+       if (!token)
+               return -EINVAL;
+       if (kstrtou8(token, 0, &traffic_class))
+               return -EINVAL;
+
+       token = strsep(&sptr, " ");
+       if (!token)
+               return -EINVAL;
+       if (kstrtou8(token, 0, &tsid))
+               return -EINVAL;
+
+       ath6kl_wmi_delete_pstream_cmd(ar->wmi, vif->fw_vif_idx,
+                                     traffic_class, tsid);
+
+       return count;
+}
+
+static const struct file_operations fops_delete_qos = {
+       .write = ath6kl_delete_qos_write,
+       .open = ath6kl_debugfs_open,
+       .owner = THIS_MODULE,
+       .llseek = default_llseek,
+};
+
+static ssize_t ath6kl_bgscan_int_write(struct file *file,
+                               const char __user *user_buf,
+                               size_t count, loff_t *ppos)
+{
+       struct ath6kl *ar = file->private_data;
+       u16 bgscan_int;
+       char buf[32];
+       ssize_t len;
+
+       len = min(count, sizeof(buf) - 1);
+       if (copy_from_user(buf, user_buf, len))
+               return -EFAULT;
+
+       buf[len] = '\0';
+       if (kstrtou16(buf, 0, &bgscan_int))
+               return -EINVAL;
+
+       if (bgscan_int == 0)
+               bgscan_int = 0xffff;
+
+       ath6kl_wmi_scanparams_cmd(ar->wmi, 0, 0, 0, bgscan_int, 0, 0, 0, 3,
+                                 0, 0, 0);
+
+       return count;
+}
+
+static const struct file_operations fops_bgscan_int = {
+       .write = ath6kl_bgscan_int_write,
+       .open = ath6kl_debugfs_open,
+       .owner = THIS_MODULE,
+       .llseek = default_llseek,
+};
+
+int ath6kl_debug_init(struct ath6kl *ar)
+{
+       ar->debug.fwlog_buf.buf = vmalloc(ATH6KL_FWLOG_SIZE);
+       if (ar->debug.fwlog_buf.buf == NULL)
+               return -ENOMEM;
+
+       ar->debug.fwlog_tmp = kmalloc(ATH6KL_FWLOG_SLOT_SIZE, GFP_KERNEL);
+       if (ar->debug.fwlog_tmp == NULL) {
+               vfree(ar->debug.fwlog_buf.buf);
+               return -ENOMEM;
+       }
+
+       spin_lock_init(&ar->debug.fwlog_lock);
+
+       /*
+        * Actually we are lying here but don't know how to read the mask
+        * value from the firmware.
+        */
+       ar->debug.fwlog_mask = 0;
+
+       ar->debugfs_phy = debugfs_create_dir("ath6kl",
+                                            ar->wiphy->debugfsdir);
+       if (!ar->debugfs_phy) {
+               vfree(ar->debug.fwlog_buf.buf);
+               kfree(ar->debug.fwlog_tmp);
+               return -ENOMEM;
+       }
+
+       debugfs_create_file("tgt_stats", S_IRUSR, ar->debugfs_phy, ar,
+                           &fops_tgt_stats);
+
+       debugfs_create_file("credit_dist_stats", S_IRUSR, ar->debugfs_phy, ar,
+                           &fops_credit_dist_stats);
+
+       debugfs_create_file("endpoint_stats", S_IRUSR | S_IWUSR,
+                           ar->debugfs_phy, ar, &fops_endpoint_stats);
+
+       debugfs_create_file("fwlog", S_IRUSR, ar->debugfs_phy, ar,
+                           &fops_fwlog);
+
+       debugfs_create_file("fwlog_mask", S_IRUSR | S_IWUSR, ar->debugfs_phy,
+                           ar, &fops_fwlog_mask);
+
+       debugfs_create_file("reg_addr", S_IRUSR | S_IWUSR, ar->debugfs_phy, ar,
+                           &fops_diag_reg_read);
+
+       debugfs_create_file("reg_dump", S_IRUSR, ar->debugfs_phy, ar,
+                           &fops_reg_dump);
+
+       debugfs_create_file("lrssi_roam_threshold", S_IRUSR | S_IWUSR,
+                           ar->debugfs_phy, ar, &fops_lrssi_roam_threshold);
+
+       debugfs_create_file("reg_write", S_IRUSR | S_IWUSR,
+                           ar->debugfs_phy, ar, &fops_diag_reg_write);
+
+       debugfs_create_file("war_stats", S_IRUSR, ar->debugfs_phy, ar,
+                           &fops_war_stats);
+
+       debugfs_create_file("roam_table", S_IRUSR, ar->debugfs_phy, ar,
+                           &fops_roam_table);
+
+       debugfs_create_file("force_roam", S_IWUSR, ar->debugfs_phy, ar,
+                           &fops_force_roam);
+
+       debugfs_create_file("roam_mode", S_IWUSR, ar->debugfs_phy, ar,
+                           &fops_roam_mode);
+
+       debugfs_create_file("keepalive", S_IRUSR | S_IWUSR, ar->debugfs_phy, ar,
+                           &fops_keepalive);
+
+       debugfs_create_file("disconnect_timeout", S_IRUSR | S_IWUSR,
+                           ar->debugfs_phy, ar, &fops_disconnect_timeout);
+
+       debugfs_create_file("create_qos", S_IWUSR, ar->debugfs_phy, ar,
+                               &fops_create_qos);
+
+       debugfs_create_file("delete_qos", S_IWUSR, ar->debugfs_phy, ar,
+                               &fops_delete_qos);
+
+       debugfs_create_file("bgscan_interval", S_IWUSR,
+                               ar->debugfs_phy, ar, &fops_bgscan_int);
+
+       return 0;
+}
+
+void ath6kl_debug_cleanup(struct ath6kl *ar)
+{
+       vfree(ar->debug.fwlog_buf.buf);
+       kfree(ar->debug.fwlog_tmp);
+       kfree(ar->debug.roam_tbl);
 }
 
 #endif