diff options
Diffstat (limited to 'drivers/net/wireless/cw1200/itp.c')
-rw-r--r-- | drivers/net/wireless/cw1200/itp.c | 730 |
1 files changed, 0 insertions, 730 deletions
diff --git a/drivers/net/wireless/cw1200/itp.c b/drivers/net/wireless/cw1200/itp.c deleted file mode 100644 index c0730bb49b75..000000000000 --- a/drivers/net/wireless/cw1200/itp.c +++ /dev/null @@ -1,730 +0,0 @@ -/* - * 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); -} |