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path: root/drivers/net/wireless/cw1200/itp.c
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Diffstat (limited to 'drivers/net/wireless/cw1200/itp.c')
-rw-r--r--drivers/net/wireless/cw1200/itp.c730
1 files changed, 730 insertions, 0 deletions
diff --git a/drivers/net/wireless/cw1200/itp.c b/drivers/net/wireless/cw1200/itp.c
new file mode 100644
index 000000000000..c0730bb49b75
--- /dev/null
+++ b/drivers/net/wireless/cw1200/itp.c
@@ -0,0 +1,730 @@
+/*
+ * mac80211 glue code for mac80211 ST-Ericsson CW1200 drivers
+ * ITP code
+ *
+ * Copyright (c) 2010, ST-Ericsson
+ * Author: Dmitry Tarnyagin <dmitry.tarnyagin@lockless.no>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/debugfs.h>
+#include <linux/poll.h>
+#include <linux/time.h>
+#include <linux/random.h>
+#include <linux/kallsyms.h>
+#include <net/mac80211.h>
+#include "cw1200.h"
+#include "debug.h"
+#include "itp.h"
+#include "sta.h"
+
+static int __cw1200_itp_open(struct cw1200_common *priv);
+static int __cw1200_itp_close(struct cw1200_common *priv);
+static void cw1200_itp_rx_start(struct cw1200_common *priv);
+static void cw1200_itp_rx_stop(struct cw1200_common *priv);
+static void cw1200_itp_rx_stats(struct cw1200_common *priv);
+static void cw1200_itp_rx_reset(struct cw1200_common *priv);
+static void cw1200_itp_tx_stop(struct cw1200_common *priv);
+static void cw1200_itp_handle(struct cw1200_common *priv,
+ struct sk_buff *skb);
+static void cw1200_itp_err(struct cw1200_common *priv,
+ int err,
+ int arg);
+static void __cw1200_itp_tx_stop(struct cw1200_common *priv);
+
+static ssize_t cw1200_itp_read(struct file *file,
+ char __user *user_buf, size_t count, loff_t *ppos)
+{
+ struct cw1200_common *priv = file->private_data;
+ struct cw1200_itp *itp = &priv->debug->itp;
+ struct sk_buff *skb;
+ int ret;
+
+ if (skb_queue_empty(&itp->log_queue))
+ return 0;
+
+ skb = skb_dequeue(&itp->log_queue);
+ ret = copy_to_user(user_buf, skb->data, skb->len);
+ *ppos += skb->len;
+ skb->data[skb->len] = 0;
+ pr_debug("[ITP] >>> %s", skb->data);
+ consume_skb(skb);
+
+ return skb->len - ret;
+}
+
+static ssize_t cw1200_itp_write(struct file *file,
+ const char __user *user_buf, size_t count, loff_t *ppos)
+{
+ struct cw1200_common *priv = file->private_data;
+ struct sk_buff *skb;
+
+ if (!count || count > 1024)
+ return -EINVAL;
+ skb = dev_alloc_skb(count + 1);
+ if (!skb)
+ return -ENOMEM;
+ skb_trim(skb, 0);
+ skb_put(skb, count + 1);
+ if (copy_from_user(skb->data, user_buf, count)) {
+ kfree_skb(skb);
+ return -EFAULT;
+ }
+ skb->data[count] = 0;
+
+ cw1200_itp_handle(priv, skb);
+ consume_skb(skb);
+ return count;
+}
+
+static unsigned int cw1200_itp_poll(struct file *file, poll_table *wait)
+{
+ struct cw1200_common *priv = file->private_data;
+ struct cw1200_itp *itp = &priv->debug->itp;
+ unsigned int mask = 0;
+
+ poll_wait(file, &itp->read_wait, wait);
+
+ if (!skb_queue_empty(&itp->log_queue))
+ mask |= POLLIN | POLLRDNORM;
+
+ mask |= POLLOUT | POLLWRNORM;
+
+ return mask;
+}
+
+static int cw1200_itp_open(struct inode *inode, struct file *file)
+{
+ struct cw1200_common *priv = inode->i_private;
+ struct cw1200_itp *itp = &priv->debug->itp;
+ int ret = 0;
+
+ file->private_data = priv;
+ if (atomic_inc_return(&itp->open_count) == 1) {
+ ret = __cw1200_itp_open(priv);
+ if (ret && !atomic_dec_return(&itp->open_count))
+ __cw1200_itp_close(priv);
+ } else {
+ atomic_dec(&itp->open_count);
+ ret = -EBUSY;
+ }
+
+ return ret;
+}
+
+static int cw1200_itp_close(struct inode *inode, struct file *file)
+{
+ struct cw1200_common *priv = file->private_data;
+ struct cw1200_itp *itp = &priv->debug->itp;
+ if (!atomic_dec_return(&itp->open_count)) {
+ __cw1200_itp_close(priv);
+ wake_up(&itp->close_wait);
+ }
+ return 0;
+}
+
+static const struct file_operations fops_itp = {
+ .open = cw1200_itp_open,
+ .read = cw1200_itp_read,
+ .write = cw1200_itp_write,
+ .poll = cw1200_itp_poll,
+ .release = cw1200_itp_close,
+ .llseek = default_llseek,
+ .owner = THIS_MODULE,
+};
+
+static void cw1200_itp_fill_pattern(u8 *data, int size,
+ enum cw1200_itp_data_modes mode)
+{
+ if (size <= 0)
+ return;
+
+ switch (mode) {
+ default:
+ case ITP_DATA_ZEROS:
+ memset(data, 0x0, size);
+ break;
+ case ITP_DATA_ONES:
+ memset(data, 0xff, size);
+ break;
+ case ITP_DATA_ZERONES:
+ memset(data, 0x55, size);
+ break;
+ case ITP_DATA_RANDOM:
+ get_random_bytes(data, size);
+ break;
+ }
+ return;
+}
+
+static void cw1200_itp_tx_work(struct work_struct *work)
+{
+ struct cw1200_itp *itp = container_of(work, struct cw1200_itp,
+ tx_work.work);
+ struct cw1200_common *priv = itp->priv;
+ atomic_set(&priv->bh_tx, 1);
+ wake_up(&priv->bh_wq);
+}
+
+static void cw1200_itp_tx_finish(struct work_struct *work)
+{
+ struct cw1200_itp *itp = container_of(work, struct cw1200_itp,
+ tx_finish.work);
+ __cw1200_itp_tx_stop(itp->priv);
+}
+
+int cw1200_itp_init(struct cw1200_common *priv)
+{
+ struct cw1200_itp *itp = &priv->debug->itp;
+
+ itp->priv = priv;
+ atomic_set(&itp->open_count, 0);
+ atomic_set(&itp->stop_tx, 0);
+ atomic_set(&itp->awaiting_confirm, 0);
+ skb_queue_head_init(&itp->log_queue);
+ spin_lock_init(&itp->tx_lock);
+ init_waitqueue_head(&itp->read_wait);
+ init_waitqueue_head(&itp->write_wait);
+ init_waitqueue_head(&itp->close_wait);
+ INIT_DELAYED_WORK(&itp->tx_work, cw1200_itp_tx_work);
+ INIT_DELAYED_WORK(&itp->tx_finish, cw1200_itp_tx_finish);
+ itp->data = NULL;
+ itp->hdr_len = WSM_TX_EXTRA_HEADROOM +
+ sizeof(struct ieee80211_hdr_3addr);
+
+ if (!debugfs_create_file("itp", S_IRUSR | S_IWUSR,
+ priv->debug->debugfs_phy, priv, &fops_itp))
+ return -ENOMEM;
+
+ return 0;
+}
+
+void cw1200_itp_release(struct cw1200_common *priv)
+{
+ struct cw1200_itp *itp = &priv->debug->itp;
+
+ wait_event_interruptible(itp->close_wait,
+ !atomic_read(&itp->open_count));
+
+ WARN_ON(atomic_read(&itp->open_count));
+
+ skb_queue_purge(&itp->log_queue);
+ cw1200_itp_tx_stop(priv);
+}
+
+static int __cw1200_itp_open(struct cw1200_common *priv)
+{
+ struct cw1200_itp *itp = &priv->debug->itp;
+
+ if (!priv->vif)
+ return -EINVAL;
+ if (priv->join_status)
+ return -EINVAL;
+ itp->saved_channel = priv->channel;
+ if (!priv->channel)
+ priv->channel = &priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->channels[0];
+ wsm_set_bssid_filtering(priv, false);
+ cw1200_itp_rx_reset(priv);
+ return 0;
+}
+
+static int __cw1200_itp_close(struct cw1200_common *priv)
+{
+ struct cw1200_itp *itp = &priv->debug->itp;
+ if (atomic_read(&itp->test_mode) == TEST_MODE_RX_TEST)
+ cw1200_itp_rx_stop(priv);
+ cw1200_itp_tx_stop(priv);
+ cw1200_disable_listening(priv);
+ cw1200_update_filtering(priv);
+ priv->channel = itp->saved_channel;
+ return 0;
+}
+
+bool cw1200_is_itp(struct cw1200_common *priv)
+{
+ struct cw1200_itp *itp = &priv->debug->itp;
+ return atomic_read(&itp->open_count) != 0;
+}
+
+static void cw1200_itp_rx_reset(struct cw1200_common *priv)
+{
+ struct cw1200_itp *itp = &priv->debug->itp;
+ itp->rx_cnt = 0;
+ itp->rx_rssi = 0;
+ itp->rx_rssi_max = -1000;
+ itp->rx_rssi_min = 1000;
+}
+
+static void cw1200_itp_rx_start(struct cw1200_common *priv)
+{
+ struct cw1200_itp *itp = &priv->debug->itp;
+
+ pr_debug("[ITP] RX start, band = %d, ch = %d\n",
+ itp->band, itp->ch);
+ atomic_set(&itp->test_mode, TEST_MODE_RX_TEST);
+ cw1200_update_listening(priv, false);
+ priv->channel = &priv->hw->
+ wiphy->bands[itp->band]->channels[itp->ch];
+ cw1200_update_listening(priv, true);
+ wsm_set_bssid_filtering(priv, false);
+}
+
+static void cw1200_itp_rx_stop(struct cw1200_common *priv)
+{
+ struct cw1200_itp *itp = &priv->debug->itp;
+ pr_debug("[ITP] RX stop\n");
+ atomic_set(&itp->test_mode, TEST_MODE_NO_TEST);
+ cw1200_itp_rx_reset(priv);
+}
+
+static void cw1200_itp_rx_stats(struct cw1200_common *priv)
+{
+ struct cw1200_itp *itp = &priv->debug->itp;
+ struct sk_buff *skb;
+ char buf[128];
+ int len, ret;
+ struct wsm_mib_counters_table counters;
+
+ ret = wsm_get_counters_table(priv, &counters);
+
+ if (ret)
+ cw1200_itp_err(priv, -EBUSY, 20);
+
+ if (!itp->rx_cnt)
+ len = snprintf(buf, sizeof(buf), "1,0,0,0,0,%d\n",
+ counters.rx_packet_errors);
+ else
+ len = snprintf(buf, sizeof(buf), "1,%d,%ld,%d,%d,%d\n",
+ itp->rx_cnt,
+ itp->rx_cnt ? itp->rx_rssi / itp->rx_cnt : 0,
+ itp->rx_rssi_min, itp->rx_rssi_max,
+ counters.rx_packet_errors);
+
+ if (len <= 0) {
+ cw1200_itp_err(priv, -EBUSY, 21);
+ return;
+ }
+
+ skb = dev_alloc_skb(len);
+ if (!skb) {
+ cw1200_itp_err(priv, -ENOMEM, 22);
+ return;
+ }
+
+ itp->rx_cnt = 0;
+ itp->rx_rssi = 0;
+ itp->rx_rssi_max = -1000;
+ itp->rx_rssi_min = 1000;
+
+ skb_trim(skb, 0);
+ skb_put(skb, len);
+
+ memcpy(skb->data, buf, len);
+ skb_queue_tail(&itp->log_queue, skb);
+ wake_up(&itp->read_wait);
+}
+
+static void cw1200_itp_tx_start(struct cw1200_common *priv)
+{
+ struct wsm_tx *tx;
+ struct ieee80211_hdr_3addr *hdr;
+ struct cw1200_itp *itp = &priv->debug->itp;
+ struct wsm_mib_association_mode assoc_mode = {
+ .flags = WSM_ASSOCIATION_MODE_USE_PREAMBLE_TYPE,
+ .preamble = itp->preamble,
+ };
+ int len;
+ u8 da_addr[6] = ITP_DEFAULT_DA_ADDR;
+
+ /* Rates index 4 and 5 are not supported */
+ if (itp->rate > 3)
+ itp->rate += 2;
+
+ pr_debug("[ITP] TX start: band = %d, ch = %d, rate = %d, preamble = %d, number = %d, data_mode = %d, interval = %d, power = %d, data_len = %d\n",
+ itp->band, itp->ch, itp->rate, itp->preamble,
+ itp->number, itp->data_mode, itp->interval_us,
+ itp->power, itp->data_len);
+
+ len = itp->hdr_len + itp->data_len;
+
+ itp->data = kmalloc(len, GFP_KERNEL);
+ tx = (struct wsm_tx *)itp->data;
+ tx->hdr.len = itp->data_len + itp->hdr_len;
+ tx->hdr.id = __cpu_to_le16(0x0004 | 1 << 6);
+ tx->max_tx_rate = itp->rate;
+ tx->queue_id = 3;
+ tx->more = 0;
+ tx->flags = 0xc;
+ tx->packet_id = 0x55ff55;
+ tx->reserved = 0;
+ tx->expire_time = 1;
+
+ if (itp->preamble == ITP_PREAMBLE_GREENFIELD)
+ tx->ht_tx_parameters = WSM_HT_TX_GREENFIELD;
+ else if (itp->preamble == ITP_PREAMBLE_MIXED)
+ tx->ht_tx_parameters = WSM_HT_TX_MIXED;
+
+ hdr = (struct ieee80211_hdr_3addr *)&itp->data[sizeof(struct wsm_tx)];
+ memset(hdr, 0, sizeof(*hdr));
+ hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_FCTL_TODS);
+ memcpy(hdr->addr1, da_addr, ETH_ALEN);
+ memcpy(hdr->addr2, priv->vif->addr, ETH_ALEN);
+ memcpy(hdr->addr3, da_addr, ETH_ALEN);
+
+ cw1200_itp_fill_pattern(&itp->data[itp->hdr_len],
+ itp->data_len, itp->data_mode);
+
+ cw1200_update_listening(priv, false);
+ priv->channel = &priv->hw->wiphy->bands[itp->band]->channels[itp->ch];
+ WARN_ON(wsm_set_output_power(priv, itp->power));
+ if (itp->preamble == ITP_PREAMBLE_SHORT ||
+ itp->preamble == ITP_PREAMBLE_LONG)
+ WARN_ON(wsm_set_association_mode(priv,
+ &assoc_mode));
+ wsm_set_bssid_filtering(priv, false);
+ cw1200_update_listening(priv, true);
+
+ spin_lock_bh(&itp->tx_lock);
+ atomic_set(&itp->test_mode, TEST_MODE_TX_TEST);
+ atomic_set(&itp->awaiting_confirm, 0);
+ atomic_set(&itp->stop_tx, 0);
+ atomic_set(&priv->bh_tx, 1);
+ ktime_get_ts(&itp->last_sent);
+ wake_up(&priv->bh_wq);
+ spin_unlock_bh(&itp->tx_lock);
+}
+
+void __cw1200_itp_tx_stop(struct cw1200_common *priv)
+{
+ struct cw1200_itp *itp = &priv->debug->itp;
+ spin_lock_bh(&itp->tx_lock);
+ kfree(itp->data);
+ itp->data = NULL;
+ atomic_set(&itp->test_mode, TEST_MODE_NO_TEST);
+ spin_unlock_bh(&itp->tx_lock);
+}
+
+static void cw1200_itp_tx_stop(struct cw1200_common *priv)
+{
+ struct cw1200_itp *itp = &priv->debug->itp;
+ pr_debug("[ITP] TX stop\n");
+ atomic_set(&itp->stop_tx, 1);
+ flush_workqueue(priv->workqueue);
+
+ /* time for FW to confirm all tx requests */
+ msleep(500);
+
+ __cw1200_itp_tx_stop(priv);
+}
+
+static int cw1200_print_fw_version(struct cw1200_common *priv,
+ u8 *buf, size_t len)
+{
+ return snprintf(buf, len, "%s %d.%d",
+ cw1200_fw_types[priv->wsm_caps.fw_type],
+ priv->wsm_caps.fw_ver,
+ priv->wsm_caps.fw_build);
+}
+
+static void cw1200_itp_get_version(struct cw1200_common *priv,
+ enum cw1200_itp_version_type type)
+{
+ struct cw1200_itp *itp = &priv->debug->itp;
+ struct sk_buff *skb;
+ char buf[ITP_BUF_SIZE];
+ size_t size = 0;
+ int len;
+ pr_debug("[ITP] print %s version\n",
+ type == ITP_CHIP_ID ? "chip" : "firmware");
+
+ len = snprintf(buf, ITP_BUF_SIZE, "2,");
+ if (len <= 0) {
+ cw1200_itp_err(priv, -EINVAL, 40);
+ return;
+ }
+ size += len;
+
+ switch (type) {
+ case ITP_CHIP_ID:
+ len = cw1200_print_fw_version(priv, buf+size,
+ ITP_BUF_SIZE - size);
+
+ if (len <= 0) {
+ cw1200_itp_err(priv, -EINVAL, 41);
+ return;
+ }
+ size += len;
+ break;
+ case ITP_FW_VER:
+ len = snprintf(buf+size, ITP_BUF_SIZE - size,
+ "%d.%d", priv->wsm_caps.hw_id,
+ priv->wsm_caps.hw_subid);
+ if (len <= 0) {
+ cw1200_itp_err(priv, -EINVAL, 42);
+ return;
+ }
+ size += len;
+ break;
+ default:
+ cw1200_itp_err(priv, -EINVAL, 43);
+ break;
+ }
+
+ len = snprintf(buf+size, ITP_BUF_SIZE-size, "\n");
+ if (len <= 0) {
+ cw1200_itp_err(priv, -EINVAL, 44);
+ return;
+ }
+ size += len;
+
+ skb = dev_alloc_skb(size);
+ if (!skb) {
+ cw1200_itp_err(priv, -ENOMEM, 45);
+ return;
+ }
+
+ skb_trim(skb, 0);
+ skb_put(skb, size);
+
+ memcpy(skb->data, buf, size);
+ skb_queue_tail(&itp->log_queue, skb);
+ wake_up(&itp->read_wait);
+}
+
+int cw1200_itp_get_tx(struct cw1200_common *priv, u8 **data,
+ size_t *tx_len, int *burst)
+{
+ struct cw1200_itp *itp;
+ struct timespec now;
+ int time_left_us;
+
+ if (!priv->debug)
+ return 0;
+
+ itp = &priv->debug->itp;
+
+ if (!itp)
+ return 0;
+
+ spin_lock_bh(&itp->tx_lock);
+ if (atomic_read(&itp->test_mode) != TEST_MODE_TX_TEST)
+ goto out;
+
+ if (atomic_read(&itp->stop_tx))
+ goto out;
+
+ if (itp->number == 0) {
+ atomic_set(&itp->stop_tx, 1);
+ queue_delayed_work(priv->workqueue, &itp->tx_finish, HZ/10);
+ goto out;
+ }
+
+ if (!itp->data)
+ goto out;
+
+ if (priv->hw_bufs_used >= 2) {
+ if (!atomic_read(&priv->bh_rx))
+ atomic_set(&priv->bh_rx, 1);
+ atomic_set(&priv->bh_tx, 1);
+ goto out;
+ }
+
+ ktime_get_ts(&now);
+ time_left_us = (itp->last_sent.tv_sec - now.tv_sec)*1000000 +
+ (itp->last_sent.tv_nsec - now.tv_nsec)/1000 +
+ itp->interval_us;
+
+ if (time_left_us > ITP_TIME_THRES_US) {
+ queue_delayed_work(priv->workqueue, &itp->tx_work,
+ ITP_US_TO_MS(time_left_us)*HZ/1000);
+ goto out;
+ }
+
+ if (time_left_us > 50)
+ udelay(time_left_us);
+
+ if (itp->number > 0)
+ itp->number--;
+
+ *data = itp->data;
+ *tx_len = itp->data_len + itp->hdr_len;
+
+ if (itp->data_mode == ITP_DATA_RANDOM)
+ cw1200_itp_fill_pattern(&itp->data[itp->hdr_len],
+ itp->data_len, itp->data_mode);
+ *burst = 2;
+ atomic_set(&priv->bh_tx, 1);
+ ktime_get_ts(&itp->last_sent);
+ atomic_add(1, &itp->awaiting_confirm);
+ spin_unlock_bh(&itp->tx_lock);
+ return 1;
+
+out:
+ spin_unlock_bh(&itp->tx_lock);
+ return 0;
+}
+
+bool cw1200_itp_rxed(struct cw1200_common *priv, struct sk_buff *skb)
+{
+ struct cw1200_itp *itp = &priv->debug->itp;
+ struct ieee80211_rx_status *rx = IEEE80211_SKB_RXCB(skb);
+ int signal;
+
+ if (atomic_read(&itp->test_mode) != TEST_MODE_RX_TEST)
+ return cw1200_is_itp(priv);
+ if (rx->freq != priv->channel->center_freq)
+ return true;
+
+ signal = rx->signal;
+ itp->rx_cnt++;
+ itp->rx_rssi += signal;
+ if (itp->rx_rssi_min > rx->signal)
+ itp->rx_rssi_min = rx->signal;
+ if (itp->rx_rssi_max < rx->signal)
+ itp->rx_rssi_max = rx->signal;
+
+ return true;
+}
+
+void cw1200_itp_wake_up_tx(struct cw1200_common *priv)
+{
+ wake_up(&priv->debug->itp.write_wait);
+}
+
+bool cw1200_itp_tx_running(struct cw1200_common *priv)
+{
+ if (atomic_read(&priv->debug->itp.awaiting_confirm) ||
+ atomic_read(&priv->debug->itp.test_mode) ==
+ TEST_MODE_TX_TEST) {
+ atomic_sub(1, &priv->debug->itp.awaiting_confirm);
+ return true;
+ }
+ return false;
+}
+
+static void cw1200_itp_handle(struct cw1200_common *priv,
+ struct sk_buff *skb)
+{
+ struct cw1200_itp *itp = &priv->debug->itp;
+ const struct wiphy *wiphy = priv->hw->wiphy;
+ int cmd;
+ int ret;
+
+ pr_debug("[ITP] <<< %s", skb->data);
+ if (sscanf(skb->data, "%d", &cmd) != 1) {
+ cw1200_itp_err(priv, -EINVAL, 1);
+ return;
+ }
+
+ switch (cmd) {
+ case 1: /* RX test */
+ if (atomic_read(&itp->test_mode)) {
+ cw1200_itp_err(priv, -EBUSY, 0);
+ return;
+ }
+ ret = sscanf(skb->data, "%d,%d,%d",
+ &cmd, &itp->band, &itp->ch);
+ if (ret != 3) {
+ cw1200_itp_err(priv, -EINVAL, ret + 1);
+ return;
+ }
+ if (itp->band >= 2) {
+ cw1200_itp_err(priv, -EINVAL, 2);
+ } else if (!wiphy->bands[itp->band]) {
+ cw1200_itp_err(priv, -EINVAL, 2);
+ } else if (itp->ch >= wiphy->bands[itp->band]->n_channels) {
+ cw1200_itp_err(priv, -EINVAL, 3);
+ } else {
+ cw1200_itp_rx_stats(priv);
+ cw1200_itp_rx_start(priv);
+ }
+ break;
+ case 2: /* RX stat */
+ cw1200_itp_rx_stats(priv);
+ break;
+ case 3: /* RX/TX stop */
+ if (atomic_read(&itp->test_mode) == TEST_MODE_RX_TEST) {
+ cw1200_itp_rx_stats(priv);
+ cw1200_itp_rx_stop(priv);
+ } else if (atomic_read(&itp->test_mode) == TEST_MODE_TX_TEST) {
+ cw1200_itp_tx_stop(priv);
+ } else {
+ cw1200_itp_err(priv, -EBUSY, 0);
+ }
+ break;
+ case 4: /* TX start */
+ if (atomic_read(&itp->test_mode) != TEST_MODE_NO_TEST) {
+ cw1200_itp_err(priv, -EBUSY, 0);
+ return;
+ }
+ ret = sscanf(skb->data, "%d,%d,%d,%d,%d,%d,%d,%d,%d,%d",
+ &cmd, &itp->band, &itp->ch, &itp->rate,
+ &itp->preamble, &itp->number, &itp->data_mode,
+ &itp->interval_us, &itp->power, &itp->data_len);
+ if (ret != 10) {
+ cw1200_itp_err(priv, -EINVAL, ret + 1);
+ return;
+ }
+ if (itp->band >= 2) {
+ cw1200_itp_err(priv, -EINVAL, 2);
+ } else if (!wiphy->bands[itp->band]) {
+ cw1200_itp_err(priv, -EINVAL, 2);
+ } else if (itp->ch >= wiphy->bands[itp->band]->n_channels) {
+ cw1200_itp_err(priv, -EINVAL, 3);
+ } else if (itp->rate >= 20) {
+ cw1200_itp_err(priv, -EINVAL, 4);
+ } else if (itp->preamble >= ITP_PREAMBLE_MAX) {
+ cw1200_itp_err(priv, -EINVAL, 5);
+ } else if (itp->data_mode >= ITP_DATA_MAX_MODE) {
+ cw1200_itp_err(priv, -EINVAL, 7);
+ } else if (itp->data_len < ITP_MIN_DATA_SIZE ||
+ itp->data_len > (priv->wsm_caps.input_buffer_size - itp->hdr_len)) {
+ cw1200_itp_err(priv, -EINVAL, 8);
+ } else {
+ cw1200_itp_tx_start(priv);
+ }
+ break;
+ case 5:
+ cw1200_itp_get_version(priv, ITP_CHIP_ID);
+ break;
+ case 6:
+ cw1200_itp_get_version(priv, ITP_FW_VER);
+ break;
+ }
+}
+
+static void cw1200_itp_err(struct cw1200_common *priv,
+ int err, int arg)
+{
+ struct cw1200_itp *itp = &priv->debug->itp;
+ struct sk_buff *skb;
+ static char buf[255];
+ int len;
+
+ len = snprintf(buf, sizeof(buf), "%d,%d\n",
+ err, arg);
+ if (len <= 0)
+ return;
+
+ skb = dev_alloc_skb(len);
+ if (!skb)
+ return;
+
+ skb_trim(skb, 0);
+ skb_put(skb, len);
+
+ memcpy(skb->data, buf, len);
+ skb_queue_tail(&itp->log_queue, skb);
+ wake_up(&itp->read_wait);
+
+ len = sprint_symbol(buf,
+ (unsigned long)__builtin_return_address(0));
+ if (len <= 0)
+ return;
+ pr_debug("[ITP] error %d,%d from %s\n",
+ err, arg, buf);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-23 21:01:52 +0100