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Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards

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orangepi/linux-orangepi-5.10.y.git/trunk/drivers/net/wireless/ath/ath9k/hif_usb.c
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/*
 * Copyright (c) 2010-2011 Atheros Communications Inc.
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */
 
#include <asm/unaligned.h>
#include "htc.h"
 
MODULE_FIRMWARE(HTC_7010_MODULE_FW);
MODULE_FIRMWARE(HTC_9271_MODULE_FW);
 
static const struct usb_device_id ath9k_hif_usb_ids[] = {
<------>{ USB_DEVICE(0x0cf3, 0x9271) }, /* Atheros */
<------>{ USB_DEVICE(0x0cf3, 0x1006) }, /* Atheros */
<------>{ USB_DEVICE(0x0846, 0x9030) }, /* Netgear N150 */
<------>{ USB_DEVICE(0x07b8, 0x9271) }, /* Altai WA1011N-GU */
<------>{ USB_DEVICE(0x07D1, 0x3A10) }, /* Dlink Wireless 150 */
<------>{ USB_DEVICE(0x13D3, 0x3327) }, /* Azurewave */
<------>{ USB_DEVICE(0x13D3, 0x3328) }, /* Azurewave */
<------>{ USB_DEVICE(0x13D3, 0x3346) }, /* IMC Networks */
<------>{ USB_DEVICE(0x13D3, 0x3348) }, /* Azurewave */
<------>{ USB_DEVICE(0x13D3, 0x3349) }, /* Azurewave */
<------>{ USB_DEVICE(0x13D3, 0x3350) }, /* Azurewave */
<------>{ USB_DEVICE(0x04CA, 0x4605) }, /* Liteon */
<------>{ USB_DEVICE(0x040D, 0x3801) }, /* VIA */
<------>{ USB_DEVICE(0x0cf3, 0xb003) }, /* Ubiquiti WifiStation Ext */
<------>{ USB_DEVICE(0x0cf3, 0xb002) }, /* Ubiquiti WifiStation */
<------>{ USB_DEVICE(0x057c, 0x8403) }, /* AVM FRITZ!WLAN 11N v2 USB */
<------>{ USB_DEVICE(0x0471, 0x209e) }, /* Philips (or NXP) PTA01 */
<------>{ USB_DEVICE(0x1eda, 0x2315) }, /* AirTies */
 
<------>{ USB_DEVICE(0x0cf3, 0x7015),
<------>  .driver_info = AR9287_USB },  /* Atheros */
<------>{ USB_DEVICE(0x1668, 0x1200),
<------>  .driver_info = AR9287_USB },  /* Verizon */
 
<------>{ USB_DEVICE(0x0cf3, 0x7010),
<------>  .driver_info = AR9280_USB },  /* Atheros */
<------>{ USB_DEVICE(0x0846, 0x9018),
<------>  .driver_info = AR9280_USB },  /* Netgear WNDA3200 */
<------>{ USB_DEVICE(0x083A, 0xA704),
<------>  .driver_info = AR9280_USB },  /* SMC Networks */
<------>{ USB_DEVICE(0x0411, 0x017f),
<------>  .driver_info = AR9280_USB },  /* Sony UWA-BR100 */
<------>{ USB_DEVICE(0x0411, 0x0197),
<------>  .driver_info = AR9280_USB },  /* Buffalo WLI-UV-AG300P */
<------>{ USB_DEVICE(0x04da, 0x3904),
<------>  .driver_info = AR9280_USB },
<------>{ USB_DEVICE(0x0930, 0x0a08),
<------>  .driver_info = AR9280_USB },  /* Toshiba WLM-20U2 and GN-1080 */
 
<------>{ USB_DEVICE(0x0cf3, 0x20ff),
<------>  .driver_info = STORAGE_DEVICE },
 
<------>{ },
};
 
MODULE_DEVICE_TABLE(usb, ath9k_hif_usb_ids);
 
static int __hif_usb_tx(struct hif_device_usb *hif_dev);
 
static void hif_usb_regout_cb(struct urb *urb)
{
<------>struct cmd_buf *cmd = (struct cmd_buf *)urb->context;
 
<------>switch (urb->status) {
<------>case 0:
<------><------>break;
<------>case -ENOENT:
<------>case -ECONNRESET:
<------>case -ENODEV:
<------>case -ESHUTDOWN:
<------><------>goto free;
<------>default:
<------><------>break;
<------>}
 
<------>if (cmd) {
<------><------>ath9k_htc_txcompletion_cb(cmd->hif_dev->htc_handle,
<------><------><------><------><------>  cmd->skb, true);
<------><------>kfree(cmd);
<------>}
 
<------>return;
free:
<------>kfree_skb(cmd->skb);
<------>kfree(cmd);
}
 
static int hif_usb_send_regout(struct hif_device_usb *hif_dev,
<------><------><------>       struct sk_buff *skb)
{
<------>struct urb *urb;
<------>struct cmd_buf *cmd;
<------>int ret = 0;
 
<------>urb = usb_alloc_urb(0, GFP_KERNEL);
<------>if (urb == NULL)
<------><------>return -ENOMEM;
 
<------>cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
<------>if (cmd == NULL) {
<------><------>usb_free_urb(urb);
<------><------>return -ENOMEM;
<------>}
 
<------>cmd->skb = skb;
<------>cmd->hif_dev = hif_dev;
 
<------>usb_fill_int_urb(urb, hif_dev->udev,
<------><------><------> usb_sndintpipe(hif_dev->udev, USB_REG_OUT_PIPE),
<------><------><------> skb->data, skb->len,
<------><------><------> hif_usb_regout_cb, cmd, 1);
 
<------>usb_anchor_urb(urb, &hif_dev->regout_submitted);
<------>ret = usb_submit_urb(urb, GFP_KERNEL);
<------>if (ret) {
<------><------>usb_unanchor_urb(urb);
<------><------>kfree(cmd);
<------>}
<------>usb_free_urb(urb);
 
<------>return ret;
}
 
static void hif_usb_mgmt_cb(struct urb *urb)
{
<------>struct cmd_buf *cmd = (struct cmd_buf *)urb->context;
<------>struct hif_device_usb *hif_dev;
<------>unsigned long flags;
<------>bool txok = true;
 
<------>if (!cmd || !cmd->skb || !cmd->hif_dev)
<------><------>return;
 
<------>hif_dev = cmd->hif_dev;
 
<------>switch (urb->status) {
<------>case 0:
<------><------>break;
<------>case -ENOENT:
<------>case -ECONNRESET:
<------>case -ENODEV:
<------>case -ESHUTDOWN:
<------><------>txok = false;
 
<------><------>/*
<------><------> * If the URBs are being flushed, no need to complete
<------><------> * this packet.
<------><------> */
<------><------>spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
<------><------>if (hif_dev->tx.flags & HIF_USB_TX_FLUSH) {
<------><------><------>spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
<------><------><------>dev_kfree_skb_any(cmd->skb);
<------><------><------>kfree(cmd);
<------><------><------>return;
<------><------>}
<------><------>spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
 
<------><------>break;
<------>default:
<------><------>txok = false;
<------><------>break;
<------>}
 
<------>skb_pull(cmd->skb, 4);
<------>ath9k_htc_txcompletion_cb(cmd->hif_dev->htc_handle,
<------><------><------><------>  cmd->skb, txok);
<------>kfree(cmd);
}
 
static int hif_usb_send_mgmt(struct hif_device_usb *hif_dev,
<------><------><------>     struct sk_buff *skb)
{
<------>struct urb *urb;
<------>struct cmd_buf *cmd;
<------>int ret = 0;
<------>__le16 *hdr;
 
<------>urb = usb_alloc_urb(0, GFP_ATOMIC);
<------>if (urb == NULL)
<------><------>return -ENOMEM;
 
<------>cmd = kzalloc(sizeof(*cmd), GFP_ATOMIC);
<------>if (cmd == NULL) {
<------><------>usb_free_urb(urb);
<------><------>return -ENOMEM;
<------>}
 
<------>cmd->skb = skb;
<------>cmd->hif_dev = hif_dev;
 
<------>hdr = skb_push(skb, 4);
<------>*hdr++ = cpu_to_le16(skb->len - 4);
<------>*hdr++ = cpu_to_le16(ATH_USB_TX_STREAM_MODE_TAG);
 
<------>usb_fill_bulk_urb(urb, hif_dev->udev,
<------><------><------> usb_sndbulkpipe(hif_dev->udev, USB_WLAN_TX_PIPE),
<------><------><------> skb->data, skb->len,
<------><------><------> hif_usb_mgmt_cb, cmd);
 
<------>usb_anchor_urb(urb, &hif_dev->mgmt_submitted);
<------>ret = usb_submit_urb(urb, GFP_ATOMIC);
<------>if (ret) {
<------><------>usb_unanchor_urb(urb);
<------><------>kfree(cmd);
<------>}
<------>usb_free_urb(urb);
 
<------>return ret;
}
 
static inline void ath9k_skb_queue_purge(struct hif_device_usb *hif_dev,
<------><------><------><------><------> struct sk_buff_head *list)
{
<------>struct sk_buff *skb;
 
<------>while ((skb = __skb_dequeue(list)) != NULL) {
<------><------>dev_kfree_skb_any(skb);
<------>}
}
 
static inline void ath9k_skb_queue_complete(struct hif_device_usb *hif_dev,
<------><------><------><------><------>    struct sk_buff_head *queue,
<------><------><------><------><------>    bool txok)
{
<------>struct sk_buff *skb;
 
<------>while ((skb = __skb_dequeue(queue)) != NULL) {
#ifdef CONFIG_ATH9K_HTC_DEBUGFS
<------><------>int ln = skb->len;
#endif
<------><------>ath9k_htc_txcompletion_cb(hif_dev->htc_handle,
<------><------><------><------><------>  skb, txok);
<------><------>if (txok) {
<------><------><------>TX_STAT_INC(skb_success);
<------><------><------>TX_STAT_ADD(skb_success_bytes, ln);
<------><------>}
<------><------>else
<------><------><------>TX_STAT_INC(skb_failed);
<------>}
}
 
static void hif_usb_tx_cb(struct urb *urb)
{
<------>struct tx_buf *tx_buf = (struct tx_buf *) urb->context;
<------>struct hif_device_usb *hif_dev;
<------>bool txok = true;
 
<------>if (!tx_buf || !tx_buf->hif_dev)
<------><------>return;
 
<------>hif_dev = tx_buf->hif_dev;
 
<------>switch (urb->status) {
<------>case 0:
<------><------>break;
<------>case -ENOENT:
<------>case -ECONNRESET:
<------>case -ENODEV:
<------>case -ESHUTDOWN:
<------><------>txok = false;
 
<------><------>/*
<------><------> * If the URBs are being flushed, no need to add this
<------><------> * URB to the free list.
<------><------> */
<------><------>spin_lock(&hif_dev->tx.tx_lock);
<------><------>if (hif_dev->tx.flags & HIF_USB_TX_FLUSH) {
<------><------><------>spin_unlock(&hif_dev->tx.tx_lock);
<------><------><------>ath9k_skb_queue_purge(hif_dev, &tx_buf->skb_queue);
<------><------><------>return;
<------><------>}
<------><------>spin_unlock(&hif_dev->tx.tx_lock);
 
<------><------>break;
<------>default:
<------><------>txok = false;
<------><------>break;
<------>}
 
<------>ath9k_skb_queue_complete(hif_dev, &tx_buf->skb_queue, txok);
 
<------>/* Re-initialize the SKB queue */
<------>tx_buf->len = tx_buf->offset = 0;
<------>__skb_queue_head_init(&tx_buf->skb_queue);
 
<------>/* Add this TX buffer to the free list */
<------>spin_lock(&hif_dev->tx.tx_lock);
<------>list_move_tail(&tx_buf->list, &hif_dev->tx.tx_buf);
<------>hif_dev->tx.tx_buf_cnt++;
<------>if (!(hif_dev->tx.flags & HIF_USB_TX_STOP))
<------><------>__hif_usb_tx(hif_dev); /* Check for pending SKBs */
<------>TX_STAT_INC(buf_completed);
<------>spin_unlock(&hif_dev->tx.tx_lock);
}
 
/* TX lock has to be taken */
static int __hif_usb_tx(struct hif_device_usb *hif_dev)
{
<------>struct tx_buf *tx_buf = NULL;
<------>struct sk_buff *nskb = NULL;
<------>int ret = 0, i;
<------>u16 tx_skb_cnt = 0;
<------>u8 *buf;
<------>__le16 *hdr;
 
<------>if (hif_dev->tx.tx_skb_cnt == 0)
<------><------>return 0;
 
<------>/* Check if a free TX buffer is available */
<------>if (list_empty(&hif_dev->tx.tx_buf))
<------><------>return 0;
 
<------>tx_buf = list_first_entry(&hif_dev->tx.tx_buf, struct tx_buf, list);
<------>list_move_tail(&tx_buf->list, &hif_dev->tx.tx_pending);
<------>hif_dev->tx.tx_buf_cnt--;
 
<------>tx_skb_cnt = min_t(u16, hif_dev->tx.tx_skb_cnt, MAX_TX_AGGR_NUM);
 
<------>for (i = 0; i < tx_skb_cnt; i++) {
<------><------>nskb = __skb_dequeue(&hif_dev->tx.tx_skb_queue);
 
<------><------>/* Should never be NULL */
<------><------>BUG_ON(!nskb);
 
<------><------>hif_dev->tx.tx_skb_cnt--;
 
<------><------>buf = tx_buf->buf;
<------><------>buf += tx_buf->offset;
<------><------>hdr = (__le16 *)buf;
<------><------>*hdr++ = cpu_to_le16(nskb->len);
<------><------>*hdr++ = cpu_to_le16(ATH_USB_TX_STREAM_MODE_TAG);
<------><------>buf += 4;
<------><------>memcpy(buf, nskb->data, nskb->len);
<------><------>tx_buf->len = nskb->len + 4;
 
<------><------>if (i < (tx_skb_cnt - 1))
<------><------><------>tx_buf->offset += (((tx_buf->len - 1) / 4) + 1) * 4;
 
<------><------>if (i == (tx_skb_cnt - 1))
<------><------><------>tx_buf->len += tx_buf->offset;
 
<------><------>__skb_queue_tail(&tx_buf->skb_queue, nskb);
<------><------>TX_STAT_INC(skb_queued);
<------>}
 
<------>usb_fill_bulk_urb(tx_buf->urb, hif_dev->udev,
<------><------><------>  usb_sndbulkpipe(hif_dev->udev, USB_WLAN_TX_PIPE),
<------><------><------>  tx_buf->buf, tx_buf->len,
<------><------><------>  hif_usb_tx_cb, tx_buf);
 
<------>ret = usb_submit_urb(tx_buf->urb, GFP_ATOMIC);
<------>if (ret) {
<------><------>tx_buf->len = tx_buf->offset = 0;
<------><------>ath9k_skb_queue_complete(hif_dev, &tx_buf->skb_queue, false);
<------><------>__skb_queue_head_init(&tx_buf->skb_queue);
<------><------>list_move_tail(&tx_buf->list, &hif_dev->tx.tx_buf);
<------><------>hif_dev->tx.tx_buf_cnt++;
<------>}
 
<------>if (!ret)
<------><------>TX_STAT_INC(buf_queued);
 
<------>return ret;
}
 
static int hif_usb_send_tx(struct hif_device_usb *hif_dev, struct sk_buff *skb)
{
<------>struct ath9k_htc_tx_ctl *tx_ctl;
<------>unsigned long flags;
<------>int ret = 0;
 
<------>spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
 
<------>if (hif_dev->tx.flags & HIF_USB_TX_STOP) {
<------><------>spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
<------><------>return -ENODEV;
<------>}
 
<------>/* Check if the max queue count has been reached */
<------>if (hif_dev->tx.tx_skb_cnt > MAX_TX_BUF_NUM) {
<------><------>spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
<------><------>return -ENOMEM;
<------>}
 
<------>spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
 
<------>tx_ctl = HTC_SKB_CB(skb);
 
<------>/* Mgmt/Beacon frames don't use the TX buffer pool */
<------>if ((tx_ctl->type == ATH9K_HTC_MGMT) ||
<------>    (tx_ctl->type == ATH9K_HTC_BEACON)) {
<------><------>ret = hif_usb_send_mgmt(hif_dev, skb);
<------>}
 
<------>spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
 
<------>if ((tx_ctl->type == ATH9K_HTC_NORMAL) ||
<------>    (tx_ctl->type == ATH9K_HTC_AMPDU)) {
<------><------>__skb_queue_tail(&hif_dev->tx.tx_skb_queue, skb);
<------><------>hif_dev->tx.tx_skb_cnt++;
<------>}
 
<------>/* Check if AMPDUs have to be sent immediately */
<------>if ((hif_dev->tx.tx_buf_cnt == MAX_TX_URB_NUM) &&
<------>    (hif_dev->tx.tx_skb_cnt < 2)) {
<------><------>__hif_usb_tx(hif_dev);
<------>}
 
<------>spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
 
<------>return ret;
}
 
static void hif_usb_start(void *hif_handle)
{
<------>struct hif_device_usb *hif_dev = hif_handle;
<------>unsigned long flags;
 
<------>hif_dev->flags |= HIF_USB_START;
 
<------>spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
<------>hif_dev->tx.flags &= ~HIF_USB_TX_STOP;
<------>spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
}
 
static void hif_usb_stop(void *hif_handle)
{
<------>struct hif_device_usb *hif_dev = hif_handle;
<------>struct tx_buf *tx_buf = NULL, *tx_buf_tmp = NULL;
<------>unsigned long flags;
 
<------>spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
<------>ath9k_skb_queue_complete(hif_dev, &hif_dev->tx.tx_skb_queue, false);
<------>hif_dev->tx.tx_skb_cnt = 0;
<------>hif_dev->tx.flags |= HIF_USB_TX_STOP;
<------>spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
 
<------>/* The pending URBs have to be canceled. */
<------>spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
<------>list_for_each_entry_safe(tx_buf, tx_buf_tmp,
<------><------><------><------> &hif_dev->tx.tx_pending, list) {
<------><------>usb_get_urb(tx_buf->urb);
<------><------>spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
<------><------>usb_kill_urb(tx_buf->urb);
<------><------>list_del(&tx_buf->list);
<------><------>usb_free_urb(tx_buf->urb);
<------><------>kfree(tx_buf->buf);
<------><------>kfree(tx_buf);
<------><------>spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
<------>}
<------>spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
 
<------>usb_kill_anchored_urbs(&hif_dev->mgmt_submitted);
}
 
static int hif_usb_send(void *hif_handle, u8 pipe_id, struct sk_buff *skb)
{
<------>struct hif_device_usb *hif_dev = hif_handle;
<------>int ret = 0;
 
<------>switch (pipe_id) {
<------>case USB_WLAN_TX_PIPE:
<------><------>ret = hif_usb_send_tx(hif_dev, skb);
<------><------>break;
<------>case USB_REG_OUT_PIPE:
<------><------>ret = hif_usb_send_regout(hif_dev, skb);
<------><------>break;
<------>default:
<------><------>dev_err(&hif_dev->udev->dev,
<------><------><------>"ath9k_htc: Invalid TX pipe: %d\n", pipe_id);
<------><------>ret = -EINVAL;
<------><------>break;
<------>}
 
<------>return ret;
}
 
static inline bool check_index(struct sk_buff *skb, u8 idx)
{
<------>struct ath9k_htc_tx_ctl *tx_ctl;
 
<------>tx_ctl = HTC_SKB_CB(skb);
 
<------>if ((tx_ctl->type == ATH9K_HTC_AMPDU) &&
<------>    (tx_ctl->sta_idx == idx))
<------><------>return true;
 
<------>return false;
}
 
static void hif_usb_sta_drain(void *hif_handle, u8 idx)
{
<------>struct hif_device_usb *hif_dev = hif_handle;
<------>struct sk_buff *skb, *tmp;
<------>unsigned long flags;
 
<------>spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
 
<------>skb_queue_walk_safe(&hif_dev->tx.tx_skb_queue, skb, tmp) {
<------><------>if (check_index(skb, idx)) {
<------><------><------>__skb_unlink(skb, &hif_dev->tx.tx_skb_queue);
<------><------><------>ath9k_htc_txcompletion_cb(hif_dev->htc_handle,
<------><------><------><------><------><------>  skb, false);
<------><------><------>hif_dev->tx.tx_skb_cnt--;
<------><------><------>TX_STAT_INC(skb_failed);
<------><------>}
<------>}
 
<------>spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
}
 
static struct ath9k_htc_hif hif_usb = {
<------>.transport = ATH9K_HIF_USB,
<------>.name = "ath9k_hif_usb",
 
<------>.control_ul_pipe = USB_REG_OUT_PIPE,
<------>.control_dl_pipe = USB_REG_IN_PIPE,
 
<------>.start = hif_usb_start,
<------>.stop = hif_usb_stop,
<------>.sta_drain = hif_usb_sta_drain,
<------>.send = hif_usb_send,
};
 
static void ath9k_hif_usb_rx_stream(struct hif_device_usb *hif_dev,
<------><------><------><------>    struct sk_buff *skb)
{
<------>struct sk_buff *nskb, *skb_pool[MAX_PKT_NUM_IN_TRANSFER];
<------>int index = 0, i, len = skb->len;
<------>int rx_remain_len, rx_pkt_len;
<------>u16 pool_index = 0;
<------>u8 *ptr;
 
<------>spin_lock(&hif_dev->rx_lock);
 
<------>rx_remain_len = hif_dev->rx_remain_len;
<------>rx_pkt_len = hif_dev->rx_transfer_len;
 
<------>if (rx_remain_len != 0) {
<------><------>struct sk_buff *remain_skb = hif_dev->remain_skb;
 
<------><------>if (remain_skb) {
<------><------><------>ptr = (u8 *) remain_skb->data;
 
<------><------><------>index = rx_remain_len;
<------><------><------>rx_remain_len -= hif_dev->rx_pad_len;
<------><------><------>ptr += rx_pkt_len;
 
<------><------><------>memcpy(ptr, skb->data, rx_remain_len);
 
<------><------><------>rx_pkt_len += rx_remain_len;
<------><------><------>hif_dev->rx_remain_len = 0;
<------><------><------>skb_put(remain_skb, rx_pkt_len);
 
<------><------><------>skb_pool[pool_index++] = remain_skb;
 
<------><------>} else {
<------><------><------>index = rx_remain_len;
<------><------>}
<------>}
 
<------>spin_unlock(&hif_dev->rx_lock);
 
<------>while (index < len) {
<------><------>u16 pkt_len;
<------><------>u16 pkt_tag;
<------><------>u16 pad_len;
<------><------>int chk_idx;
 
<------><------>ptr = (u8 *) skb->data;
 
<------><------>pkt_len = get_unaligned_le16(ptr + index);
<------><------>pkt_tag = get_unaligned_le16(ptr + index + 2);
 
<------><------>if (pkt_tag != ATH_USB_RX_STREAM_MODE_TAG) {
<------><------><------>RX_STAT_INC(skb_dropped);
<------><------><------>return;
<------><------>}
 
<------><------>if (pkt_len > 2 * MAX_RX_BUF_SIZE) {
<------><------><------>dev_err(&hif_dev->udev->dev,
<------><------><------><------>"ath9k_htc: invalid pkt_len (%x)\n", pkt_len);
<------><------><------>RX_STAT_INC(skb_dropped);
<------><------><------>return;
<------><------>}
 
<------><------>pad_len = 4 - (pkt_len & 0x3);
<------><------>if (pad_len == 4)
<------><------><------>pad_len = 0;
 
<------><------>chk_idx = index;
<------><------>index = index + 4 + pkt_len + pad_len;
 
<------><------>if (index > MAX_RX_BUF_SIZE) {
<------><------><------>spin_lock(&hif_dev->rx_lock);
<------><------><------>hif_dev->rx_remain_len = index - MAX_RX_BUF_SIZE;
<------><------><------>hif_dev->rx_transfer_len =
<------><------><------><------>MAX_RX_BUF_SIZE - chk_idx - 4;
<------><------><------>hif_dev->rx_pad_len = pad_len;
 
<------><------><------>nskb = __dev_alloc_skb(pkt_len + 32, GFP_ATOMIC);
<------><------><------>if (!nskb) {
<------><------><------><------>dev_err(&hif_dev->udev->dev,
<------><------><------><------><------>"ath9k_htc: RX memory allocation error\n");
<------><------><------><------>spin_unlock(&hif_dev->rx_lock);
<------><------><------><------>goto err;
<------><------><------>}
<------><------><------>skb_reserve(nskb, 32);
<------><------><------>RX_STAT_INC(skb_allocated);
 
<------><------><------>memcpy(nskb->data, &(skb->data[chk_idx+4]),
<------><------><------>       hif_dev->rx_transfer_len);
 
<------><------><------>/* Record the buffer pointer */
<------><------><------>hif_dev->remain_skb = nskb;
<------><------><------>spin_unlock(&hif_dev->rx_lock);
<------><------>} else {
<------><------><------>if (pool_index == MAX_PKT_NUM_IN_TRANSFER) {
<------><------><------><------>dev_err(&hif_dev->udev->dev,
<------><------><------><------><------>"ath9k_htc: over RX MAX_PKT_NUM\n");
<------><------><------><------>goto err;
<------><------><------>}
<------><------><------>nskb = __dev_alloc_skb(pkt_len + 32, GFP_ATOMIC);
<------><------><------>if (!nskb) {
<------><------><------><------>dev_err(&hif_dev->udev->dev,
<------><------><------><------><------>"ath9k_htc: RX memory allocation error\n");
<------><------><------><------>goto err;
<------><------><------>}
<------><------><------>skb_reserve(nskb, 32);
<------><------><------>RX_STAT_INC(skb_allocated);
 
<------><------><------>memcpy(nskb->data, &(skb->data[chk_idx+4]), pkt_len);
<------><------><------>skb_put(nskb, pkt_len);
<------><------><------>skb_pool[pool_index++] = nskb;
<------><------>}
<------>}
 
err:
<------>for (i = 0; i < pool_index; i++) {
<------><------>RX_STAT_ADD(skb_completed_bytes, skb_pool[i]->len);
<------><------>ath9k_htc_rx_msg(hif_dev->htc_handle, skb_pool[i],
<------><------><------><------> skb_pool[i]->len, USB_WLAN_RX_PIPE);
<------><------>RX_STAT_INC(skb_completed);
<------>}
}
 
static void ath9k_hif_usb_rx_cb(struct urb *urb)
{
<------>struct rx_buf *rx_buf = (struct rx_buf *)urb->context;
<------>struct hif_device_usb *hif_dev = rx_buf->hif_dev;
<------>struct sk_buff *skb = rx_buf->skb;
<------>int ret;
 
<------>if (!skb)
<------><------>return;
 
<------>if (!hif_dev)
<------><------>goto free;
 
<------>switch (urb->status) {
<------>case 0:
<------><------>break;
<------>case -ENOENT:
<------>case -ECONNRESET:
<------>case -ENODEV:
<------>case -ESHUTDOWN:
<------><------>goto free;
<------>default:
<------><------>goto resubmit;
<------>}
 
<------>if (likely(urb->actual_length != 0)) {
<------><------>skb_put(skb, urb->actual_length);
<------><------>ath9k_hif_usb_rx_stream(hif_dev, skb);
<------>}
 
resubmit:
<------>skb_reset_tail_pointer(skb);
<------>skb_trim(skb, 0);
 
<------>usb_anchor_urb(urb, &hif_dev->rx_submitted);
<------>ret = usb_submit_urb(urb, GFP_ATOMIC);
<------>if (ret) {
<------><------>usb_unanchor_urb(urb);
<------><------>goto free;
<------>}
 
<------>return;
free:
<------>kfree_skb(skb);
<------>kfree(rx_buf);
}
 
static void ath9k_hif_usb_reg_in_cb(struct urb *urb)
{
<------>struct rx_buf *rx_buf = (struct rx_buf *)urb->context;
<------>struct hif_device_usb *hif_dev = rx_buf->hif_dev;
<------>struct sk_buff *skb = rx_buf->skb;
<------>struct sk_buff *nskb;
<------>int ret;
 
<------>if (!skb)
<------><------>return;
 
<------>if (!hif_dev)
<------><------>goto free;
 
<------>switch (urb->status) {
<------>case 0:
<------><------>break;
<------>case -ENOENT:
<------>case -ECONNRESET:
<------>case -ENODEV:
<------>case -ESHUTDOWN:
<------><------>goto free;
<------>default:
<------><------>skb_reset_tail_pointer(skb);
<------><------>skb_trim(skb, 0);
 
<------><------>goto resubmit;
<------>}
 
<------>if (likely(urb->actual_length != 0)) {
<------><------>skb_put(skb, urb->actual_length);
 
<------><------>/* Process the command first */
<------><------>ath9k_htc_rx_msg(hif_dev->htc_handle, skb,
<------><------><------><------> skb->len, USB_REG_IN_PIPE);
 
 
<------><------>nskb = alloc_skb(MAX_REG_IN_BUF_SIZE, GFP_ATOMIC);
<------><------>if (!nskb) {
<------><------><------>dev_err(&hif_dev->udev->dev,
<------><------><------><------>"ath9k_htc: REG_IN memory allocation failure\n");
<------><------><------>urb->context = NULL;
<------><------><------>return;
<------><------>}
 
<------><------>rx_buf->skb = nskb;
 
<------><------>usb_fill_int_urb(urb, hif_dev->udev,
<------><------><------><------> usb_rcvintpipe(hif_dev->udev,
<------><------><------><------><------><------> USB_REG_IN_PIPE),
<------><------><------><------> nskb->data, MAX_REG_IN_BUF_SIZE,
<------><------><------><------> ath9k_hif_usb_reg_in_cb, rx_buf, 1);
<------>}
 
resubmit:
<------>usb_anchor_urb(urb, &hif_dev->reg_in_submitted);
<------>ret = usb_submit_urb(urb, GFP_ATOMIC);
<------>if (ret) {
<------><------>usb_unanchor_urb(urb);
<------><------>goto free;
<------>}
 
<------>return;
free:
<------>kfree_skb(skb);
<------>kfree(rx_buf);
<------>urb->context = NULL;
}
 
static void ath9k_hif_usb_dealloc_tx_urbs(struct hif_device_usb *hif_dev)
{
<------>struct tx_buf *tx_buf = NULL, *tx_buf_tmp = NULL;
<------>unsigned long flags;
 
<------>spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
<------>list_for_each_entry_safe(tx_buf, tx_buf_tmp,
<------><------><------><------> &hif_dev->tx.tx_buf, list) {
<------><------>usb_get_urb(tx_buf->urb);
<------><------>spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
<------><------>usb_kill_urb(tx_buf->urb);
<------><------>list_del(&tx_buf->list);
<------><------>usb_free_urb(tx_buf->urb);
<------><------>kfree(tx_buf->buf);
<------><------>kfree(tx_buf);
<------><------>spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
<------>}
<------>spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
 
<------>spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
<------>hif_dev->tx.flags |= HIF_USB_TX_FLUSH;
<------>spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
 
<------>spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
<------>list_for_each_entry_safe(tx_buf, tx_buf_tmp,
<------><------><------><------> &hif_dev->tx.tx_pending, list) {
<------><------>usb_get_urb(tx_buf->urb);
<------><------>spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
<------><------>usb_kill_urb(tx_buf->urb);
<------><------>list_del(&tx_buf->list);
<------><------>usb_free_urb(tx_buf->urb);
<------><------>kfree(tx_buf->buf);
<------><------>kfree(tx_buf);
<------><------>spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
<------>}
<------>spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
 
<------>usb_kill_anchored_urbs(&hif_dev->mgmt_submitted);
}
 
static int ath9k_hif_usb_alloc_tx_urbs(struct hif_device_usb *hif_dev)
{
<------>struct tx_buf *tx_buf;
<------>int i;
 
<------>INIT_LIST_HEAD(&hif_dev->tx.tx_buf);
<------>INIT_LIST_HEAD(&hif_dev->tx.tx_pending);
<------>spin_lock_init(&hif_dev->tx.tx_lock);
<------>__skb_queue_head_init(&hif_dev->tx.tx_skb_queue);
<------>init_usb_anchor(&hif_dev->mgmt_submitted);
 
<------>for (i = 0; i < MAX_TX_URB_NUM; i++) {
<------><------>tx_buf = kzalloc(sizeof(*tx_buf), GFP_KERNEL);
<------><------>if (!tx_buf)
<------><------><------>goto err;
 
<------><------>tx_buf->buf = kzalloc(MAX_TX_BUF_SIZE, GFP_KERNEL);
<------><------>if (!tx_buf->buf)
<------><------><------>goto err;
 
<------><------>tx_buf->urb = usb_alloc_urb(0, GFP_KERNEL);
<------><------>if (!tx_buf->urb)
<------><------><------>goto err;
 
<------><------>tx_buf->hif_dev = hif_dev;
<------><------>__skb_queue_head_init(&tx_buf->skb_queue);
 
<------><------>list_add_tail(&tx_buf->list, &hif_dev->tx.tx_buf);
<------>}
 
<------>hif_dev->tx.tx_buf_cnt = MAX_TX_URB_NUM;
 
<------>return 0;
err:
<------>if (tx_buf) {
<------><------>kfree(tx_buf->buf);
<------><------>kfree(tx_buf);
<------>}
<------>ath9k_hif_usb_dealloc_tx_urbs(hif_dev);
<------>return -ENOMEM;
}
 
static void ath9k_hif_usb_dealloc_rx_urbs(struct hif_device_usb *hif_dev)
{
<------>usb_kill_anchored_urbs(&hif_dev->rx_submitted);
}
 
static int ath9k_hif_usb_alloc_rx_urbs(struct hif_device_usb *hif_dev)
{
<------>struct rx_buf *rx_buf = NULL;
<------>struct sk_buff *skb = NULL;
<------>struct urb *urb = NULL;
<------>int i, ret;
 
<------>init_usb_anchor(&hif_dev->rx_submitted);
<------>spin_lock_init(&hif_dev->rx_lock);
 
<------>for (i = 0; i < MAX_RX_URB_NUM; i++) {
 
<------><------>rx_buf = kzalloc(sizeof(*rx_buf), GFP_KERNEL);
<------><------>if (!rx_buf) {
<------><------><------>ret = -ENOMEM;
<------><------><------>goto err_rxb;
<------><------>}
 
<------><------>/* Allocate URB */
<------><------>urb = usb_alloc_urb(0, GFP_KERNEL);
<------><------>if (urb == NULL) {
<------><------><------>ret = -ENOMEM;
<------><------><------>goto err_urb;
<------><------>}
 
<------><------>/* Allocate buffer */
<------><------>skb = alloc_skb(MAX_RX_BUF_SIZE, GFP_KERNEL);
<------><------>if (!skb) {
<------><------><------>ret = -ENOMEM;
<------><------><------>goto err_skb;
<------><------>}
 
<------><------>rx_buf->hif_dev = hif_dev;
<------><------>rx_buf->skb = skb;
 
<------><------>usb_fill_bulk_urb(urb, hif_dev->udev,
<------><------><------><------>  usb_rcvbulkpipe(hif_dev->udev,
<------><------><------><------><------><------>  USB_WLAN_RX_PIPE),
<------><------><------><------>  skb->data, MAX_RX_BUF_SIZE,
<------><------><------><------>  ath9k_hif_usb_rx_cb, rx_buf);
 
<------><------>/* Anchor URB */
<------><------>usb_anchor_urb(urb, &hif_dev->rx_submitted);
 
<------><------>/* Submit URB */
<------><------>ret = usb_submit_urb(urb, GFP_KERNEL);
<------><------>if (ret) {
<------><------><------>usb_unanchor_urb(urb);
<------><------><------>goto err_submit;
<------><------>}
 
<------><------>/*
<------><------> * Drop reference count.
<------><------> * This ensures that the URB is freed when killing them.
<------><------> */
<------><------>usb_free_urb(urb);
<------>}
 
<------>return 0;
 
err_submit:
<------>kfree_skb(skb);
err_skb:
<------>usb_free_urb(urb);
err_urb:
<------>kfree(rx_buf);
err_rxb:
<------>ath9k_hif_usb_dealloc_rx_urbs(hif_dev);
<------>return ret;
}
 
static void ath9k_hif_usb_dealloc_reg_in_urbs(struct hif_device_usb *hif_dev)
{
<------>usb_kill_anchored_urbs(&hif_dev->reg_in_submitted);
}
 
static int ath9k_hif_usb_alloc_reg_in_urbs(struct hif_device_usb *hif_dev)
{
<------>struct rx_buf *rx_buf = NULL;
<------>struct sk_buff *skb = NULL;
<------>struct urb *urb = NULL;
<------>int i, ret;
 
<------>init_usb_anchor(&hif_dev->reg_in_submitted);
 
<------>for (i = 0; i < MAX_REG_IN_URB_NUM; i++) {
 
<------><------>rx_buf = kzalloc(sizeof(*rx_buf), GFP_KERNEL);
<------><------>if (!rx_buf) {
<------><------><------>ret = -ENOMEM;
<------><------><------>goto err_rxb;
<------><------>}
 
<------><------>/* Allocate URB */
<------><------>urb = usb_alloc_urb(0, GFP_KERNEL);
<------><------>if (urb == NULL) {
<------><------><------>ret = -ENOMEM;
<------><------><------>goto err_urb;
<------><------>}
 
<------><------>/* Allocate buffer */
<------><------>skb = alloc_skb(MAX_REG_IN_BUF_SIZE, GFP_KERNEL);
<------><------>if (!skb) {
<------><------><------>ret = -ENOMEM;
<------><------><------>goto err_skb;
<------><------>}
 
<------><------>rx_buf->hif_dev = hif_dev;
<------><------>rx_buf->skb = skb;
 
<------><------>usb_fill_int_urb(urb, hif_dev->udev,
<------><------><------><------>  usb_rcvintpipe(hif_dev->udev,
<------><------><------><------><------><------>  USB_REG_IN_PIPE),
<------><------><------><------>  skb->data, MAX_REG_IN_BUF_SIZE,
<------><------><------><------>  ath9k_hif_usb_reg_in_cb, rx_buf, 1);
 
<------><------>/* Anchor URB */
<------><------>usb_anchor_urb(urb, &hif_dev->reg_in_submitted);
 
<------><------>/* Submit URB */
<------><------>ret = usb_submit_urb(urb, GFP_KERNEL);
<------><------>if (ret) {
<------><------><------>usb_unanchor_urb(urb);
<------><------><------>goto err_submit;
<------><------>}
 
<------><------>/*
<------><------> * Drop reference count.
<------><------> * This ensures that the URB is freed when killing them.
<------><------> */
<------><------>usb_free_urb(urb);
<------>}
 
<------>return 0;
 
err_submit:
<------>kfree_skb(skb);
err_skb:
<------>usb_free_urb(urb);
err_urb:
<------>kfree(rx_buf);
err_rxb:
<------>ath9k_hif_usb_dealloc_reg_in_urbs(hif_dev);
<------>return ret;
}
 
static int ath9k_hif_usb_alloc_urbs(struct hif_device_usb *hif_dev)
{
<------>/* Register Write */
<------>init_usb_anchor(&hif_dev->regout_submitted);
 
<------>/* TX */
<------>if (ath9k_hif_usb_alloc_tx_urbs(hif_dev) < 0)
<------><------>goto err;
 
<------>/* RX */
<------>if (ath9k_hif_usb_alloc_rx_urbs(hif_dev) < 0)
<------><------>goto err_rx;
 
<------>/* Register Read */
<------>if (ath9k_hif_usb_alloc_reg_in_urbs(hif_dev) < 0)
<------><------>goto err_reg;
 
<------>return 0;
err_reg:
<------>ath9k_hif_usb_dealloc_rx_urbs(hif_dev);
err_rx:
<------>ath9k_hif_usb_dealloc_tx_urbs(hif_dev);
err:
<------>return -ENOMEM;
}
 
void ath9k_hif_usb_dealloc_urbs(struct hif_device_usb *hif_dev)
{
<------>usb_kill_anchored_urbs(&hif_dev->regout_submitted);
<------>ath9k_hif_usb_dealloc_reg_in_urbs(hif_dev);
<------>ath9k_hif_usb_dealloc_tx_urbs(hif_dev);
<------>ath9k_hif_usb_dealloc_rx_urbs(hif_dev);
}
 
static int ath9k_hif_usb_download_fw(struct hif_device_usb *hif_dev)
{
<------>int transfer, err;
<------>const void *data = hif_dev->fw_data;
<------>size_t len = hif_dev->fw_size;
<------>u32 addr = AR9271_FIRMWARE;
<------>u8 *buf = kzalloc(4096, GFP_KERNEL);
<------>u32 firm_offset;
 
<------>if (!buf)
<------><------>return -ENOMEM;
 
<------>while (len) {
<------><------>transfer = min_t(size_t, len, 4096);
<------><------>memcpy(buf, data, transfer);
 
<------><------>err = usb_control_msg(hif_dev->udev,
<------><------><------><------>      usb_sndctrlpipe(hif_dev->udev, 0),
<------><------><------><------>      FIRMWARE_DOWNLOAD, 0x40 | USB_DIR_OUT,
<------><------><------><------>      addr >> 8, 0, buf, transfer,
<------><------><------><------>      USB_MSG_TIMEOUT);
<------><------>if (err < 0) {
<------><------><------>kfree(buf);
<------><------><------>return err;
<------><------>}
 
<------><------>len -= transfer;
<------><------>data += transfer;
<------><------>addr += transfer;
<------>}
<------>kfree(buf);
 
<------>if (IS_AR7010_DEVICE(hif_dev->usb_device_id->driver_info))
<------><------>firm_offset = AR7010_FIRMWARE_TEXT;
<------>else
<------><------>firm_offset = AR9271_FIRMWARE_TEXT;
 
<------>/*
<------> * Issue FW download complete command to firmware.
<------> */
<------>err = usb_control_msg(hif_dev->udev, usb_sndctrlpipe(hif_dev->udev, 0),
<------><------><------>      FIRMWARE_DOWNLOAD_COMP,
<------><------><------>      0x40 | USB_DIR_OUT,
<------><------><------>      firm_offset >> 8, 0, NULL, 0, USB_MSG_TIMEOUT);
<------>if (err)
<------><------>return -EIO;
 
<------>dev_info(&hif_dev->udev->dev, "ath9k_htc: Transferred FW: %s, size: %ld\n",
<------><------> hif_dev->fw_name, (unsigned long) hif_dev->fw_size);
 
<------>return 0;
}
 
static int ath9k_hif_usb_dev_init(struct hif_device_usb *hif_dev)
{
<------>int ret;
 
<------>ret = ath9k_hif_usb_download_fw(hif_dev);
<------>if (ret) {
<------><------>dev_err(&hif_dev->udev->dev,
<------><------><------>"ath9k_htc: Firmware - %s download failed\n",
<------><------><------>hif_dev->fw_name);
<------><------>return ret;
<------>}
 
<------>/* Alloc URBs */
<------>ret = ath9k_hif_usb_alloc_urbs(hif_dev);
<------>if (ret) {
<------><------>dev_err(&hif_dev->udev->dev,
<------><------><------>"ath9k_htc: Unable to allocate URBs\n");
<------><------>return ret;
<------>}
 
<------>return 0;
}
 
static void ath9k_hif_usb_dev_deinit(struct hif_device_usb *hif_dev)
{
<------>ath9k_hif_usb_dealloc_urbs(hif_dev);
}
 
/*
 * If initialization fails or the FW cannot be retrieved,
 * detach the device.
 */
static void ath9k_hif_usb_firmware_fail(struct hif_device_usb *hif_dev)
{
<------>struct device *dev = &hif_dev->udev->dev;
<------>struct device *parent = dev->parent;
 
<------>complete_all(&hif_dev->fw_done);
 
<------>if (parent)
<------><------>device_lock(parent);
 
<------>device_release_driver(dev);
 
<------>if (parent)
<------><------>device_unlock(parent);
}
 
static void ath9k_hif_usb_firmware_cb(const struct firmware *fw, void *context);
 
/* taken from iwlwifi */
static int ath9k_hif_request_firmware(struct hif_device_usb *hif_dev,
<------><------><------><------>      bool first)
{
<------>char index[8], *chip;
<------>int ret;
 
<------>if (first) {
<------><------>if (htc_use_dev_fw) {
<------><------><------>hif_dev->fw_minor_index = FIRMWARE_MINOR_IDX_MAX + 1;
<------><------><------>sprintf(index, "%s", "dev");
<------><------>} else {
<------><------><------>hif_dev->fw_minor_index = FIRMWARE_MINOR_IDX_MAX;
<------><------><------>sprintf(index, "%d", hif_dev->fw_minor_index);
<------><------>}
<------>} else {
<------><------>hif_dev->fw_minor_index--;
<------><------>sprintf(index, "%d", hif_dev->fw_minor_index);
<------>}
 
<------>/* test for FW 1.3 */
<------>if (MAJOR_VERSION_REQ == 1 && hif_dev->fw_minor_index == 3) {
<------><------>const char *filename;
 
<------><------>if (IS_AR7010_DEVICE(hif_dev->usb_device_id->driver_info))
<------><------><------>filename = FIRMWARE_AR7010_1_1;
<------><------>else
<------><------><------>filename = FIRMWARE_AR9271;
 
<------><------>/* expected fw locations:
<------><------> * - htc_9271.fw   (stable version 1.3, depricated)
<------><------> */
<------><------>snprintf(hif_dev->fw_name, sizeof(hif_dev->fw_name),
<------><------><------> "%s", filename);
 
<------>} else if (hif_dev->fw_minor_index < FIRMWARE_MINOR_IDX_MIN) {
<------><------>dev_err(&hif_dev->udev->dev, "no suitable firmware found!\n");
 
<------><------>return -ENOENT;
<------>} else {
<------><------>if (IS_AR7010_DEVICE(hif_dev->usb_device_id->driver_info))
<------><------><------>chip = "7010";
<------><------>else
<------><------><------>chip = "9271";
 
<------><------>/* expected fw locations:
<------><------> * - ath9k_htc/htc_9271-1.dev.0.fw (development version)
<------><------> * - ath9k_htc/htc_9271-1.4.0.fw   (stable version)
<------><------> */
<------><------>snprintf(hif_dev->fw_name, sizeof(hif_dev->fw_name),
<------><------><------> "%s/htc_%s-%d.%s.0.fw", HTC_FW_PATH,
<------><------><------> chip, MAJOR_VERSION_REQ, index);
<------>}
 
<------>ret = request_firmware_nowait(THIS_MODULE, true, hif_dev->fw_name,
<------><------><------><------>      &hif_dev->udev->dev, GFP_KERNEL,
<------><------><------><------>      hif_dev, ath9k_hif_usb_firmware_cb);
<------>if (ret) {
<------><------>dev_err(&hif_dev->udev->dev,
<------><------><------>"ath9k_htc: Async request for firmware %s failed\n",
<------><------><------>hif_dev->fw_name);
<------><------>return ret;
<------>}
 
<------>dev_info(&hif_dev->udev->dev, "ath9k_htc: Firmware %s requested\n",
<------><------> hif_dev->fw_name);
 
<------>return ret;
}
 
static void ath9k_hif_usb_firmware_cb(const struct firmware *fw, void *context)
{
<------>struct hif_device_usb *hif_dev = context;
<------>int ret;
 
<------>if (!fw) {
<------><------>ret = ath9k_hif_request_firmware(hif_dev, false);
<------><------>if (!ret)
<------><------><------>return;
 
<------><------>dev_err(&hif_dev->udev->dev,
<------><------><------>"ath9k_htc: Failed to get firmware %s\n",
<------><------><------>hif_dev->fw_name);
<------><------>goto err_fw;
<------>}
 
<------>hif_dev->htc_handle = ath9k_htc_hw_alloc(hif_dev, &hif_usb,
<------><------><------><------><------><------> &hif_dev->udev->dev);
<------>if (hif_dev->htc_handle == NULL)
<------><------>goto err_dev_alloc;
 
<------>hif_dev->fw_data = fw->data;
<------>hif_dev->fw_size = fw->size;
 
<------>/* Proceed with initialization */
 
<------>ret = ath9k_hif_usb_dev_init(hif_dev);
<------>if (ret)
<------><------>goto err_dev_init;
 
<------>ret = ath9k_htc_hw_init(hif_dev->htc_handle,
<------><------><------><------>&hif_dev->interface->dev,
<------><------><------><------>hif_dev->usb_device_id->idProduct,
<------><------><------><------>hif_dev->udev->product,
<------><------><------><------>hif_dev->usb_device_id->driver_info);
<------>if (ret) {
<------><------>ret = -EINVAL;
<------><------>goto err_htc_hw_init;
<------>}
 
<------>release_firmware(fw);
<------>hif_dev->flags |= HIF_USB_READY;
<------>complete_all(&hif_dev->fw_done);
 
<------>return;
 
err_htc_hw_init:
<------>ath9k_hif_usb_dev_deinit(hif_dev);
err_dev_init:
<------>ath9k_htc_hw_free(hif_dev->htc_handle);
err_dev_alloc:
<------>release_firmware(fw);
err_fw:
<------>ath9k_hif_usb_firmware_fail(hif_dev);
}
 
/*
 * An exact copy of the function from zd1211rw.
 */
static int send_eject_command(struct usb_interface *interface)
{
<------>struct usb_device *udev = interface_to_usbdev(interface);
<------>struct usb_host_interface *iface_desc = interface->cur_altsetting;
<------>struct usb_endpoint_descriptor *endpoint;
<------>unsigned char *cmd;
<------>u8 bulk_out_ep;
<------>int r;
 
<------>if (iface_desc->desc.bNumEndpoints < 2)
<------><------>return -ENODEV;
 
<------>/* Find bulk out endpoint */
<------>for (r = 1; r >= 0; r--) {
<------><------>endpoint = &iface_desc->endpoint[r].desc;
<------><------>if (usb_endpoint_dir_out(endpoint) &&
<------><------>    usb_endpoint_xfer_bulk(endpoint)) {
<------><------><------>bulk_out_ep = endpoint->bEndpointAddress;
<------><------><------>break;
<------><------>}
<------>}
<------>if (r == -1) {
<------><------>dev_err(&udev->dev,
<------><------><------>"ath9k_htc: Could not find bulk out endpoint\n");
<------><------>return -ENODEV;
<------>}
 
<------>cmd = kzalloc(31, GFP_KERNEL);
<------>if (cmd == NULL)
<------><------>return -ENODEV;
 
<------>/* USB bulk command block */
<------>cmd[0] = 0x55;	/* bulk command signature */
<------>cmd[1] = 0x53;	/* bulk command signature */
<------>cmd[2] = 0x42;	/* bulk command signature */
<------>cmd[3] = 0x43;	/* bulk command signature */
<------>cmd[14] = 6;	/* command length */
 
<------>cmd[15] = 0x1b;	/* SCSI command: START STOP UNIT */
<------>cmd[19] = 0x2;	/* eject disc */
 
<------>dev_info(&udev->dev, "Ejecting storage device...\n");
<------>r = usb_bulk_msg(udev, usb_sndbulkpipe(udev, bulk_out_ep),
<------><------>cmd, 31, NULL, 2 * USB_MSG_TIMEOUT);
<------>kfree(cmd);
<------>if (r)
<------><------>return r;
 
<------>/* At this point, the device disconnects and reconnects with the real
<------> * ID numbers. */
 
<------>usb_set_intfdata(interface, NULL);
<------>return 0;
}
 
static int ath9k_hif_usb_probe(struct usb_interface *interface,
<------><------><------>       const struct usb_device_id *id)
{
<------>struct usb_device *udev = interface_to_usbdev(interface);
<------>struct hif_device_usb *hif_dev;
<------>int ret = 0;
 
<------>if (id->driver_info == STORAGE_DEVICE)
<------><------>return send_eject_command(interface);
 
<------>hif_dev = kzalloc(sizeof(struct hif_device_usb), GFP_KERNEL);
<------>if (!hif_dev) {
<------><------>ret = -ENOMEM;
<------><------>goto err_alloc;
<------>}
 
<------>usb_get_dev(udev);
 
<------>hif_dev->udev = udev;
<------>hif_dev->interface = interface;
<------>hif_dev->usb_device_id = id;
#ifdef CONFIG_PM
<------>udev->reset_resume = 1;
#endif
<------>usb_set_intfdata(interface, hif_dev);
 
<------>init_completion(&hif_dev->fw_done);
 
<------>ret = ath9k_hif_request_firmware(hif_dev, true);
<------>if (ret)
<------><------>goto err_fw_req;
 
<------>return ret;
 
err_fw_req:
<------>usb_set_intfdata(interface, NULL);
<------>kfree(hif_dev);
<------>usb_put_dev(udev);
err_alloc:
<------>return ret;
}
 
static void ath9k_hif_usb_reboot(struct usb_device *udev)
{
<------>u32 reboot_cmd = 0xffffffff;
<------>void *buf;
<------>int ret;
 
<------>buf = kmemdup(&reboot_cmd, 4, GFP_KERNEL);
<------>if (!buf)
<------><------>return;
 
<------>ret = usb_interrupt_msg(udev, usb_sndintpipe(udev, USB_REG_OUT_PIPE),
<------><------><------>   buf, 4, NULL, USB_MSG_TIMEOUT);
<------>if (ret)
<------><------>dev_err(&udev->dev, "ath9k_htc: USB reboot failed\n");
 
<------>kfree(buf);
}
 
static void ath9k_hif_usb_disconnect(struct usb_interface *interface)
{
<------>struct usb_device *udev = interface_to_usbdev(interface);
<------>struct hif_device_usb *hif_dev = usb_get_intfdata(interface);
<------>bool unplugged = (udev->state == USB_STATE_NOTATTACHED) ? true : false;
 
<------>if (!hif_dev)
<------><------>return;
 
<------>wait_for_completion(&hif_dev->fw_done);
 
<------>if (hif_dev->flags & HIF_USB_READY) {
<------><------>ath9k_htc_hw_deinit(hif_dev->htc_handle, unplugged);
<------><------>ath9k_hif_usb_dev_deinit(hif_dev);
<------><------>ath9k_destroy_wmi(hif_dev->htc_handle->drv_priv);
<------><------>ath9k_htc_hw_free(hif_dev->htc_handle);
<------>}
 
<------>usb_set_intfdata(interface, NULL);
 
<------>/* If firmware was loaded we should drop it
<------> * go back to first stage bootloader. */
<------>if (!unplugged && (hif_dev->flags & HIF_USB_READY))
<------><------>ath9k_hif_usb_reboot(udev);
 
<------>kfree(hif_dev);
<------>dev_info(&udev->dev, "ath9k_htc: USB layer deinitialized\n");
<------>usb_put_dev(udev);
}
 
#ifdef CONFIG_PM
static int ath9k_hif_usb_suspend(struct usb_interface *interface,
<------><------><------><------> pm_message_t message)
{
<------>struct hif_device_usb *hif_dev = usb_get_intfdata(interface);
 
<------>/*
<------> * The device has to be set to FULLSLEEP mode in case no
<------> * interface is up.
<------> */
<------>if (!(hif_dev->flags & HIF_USB_START))
<------><------>ath9k_htc_suspend(hif_dev->htc_handle);
 
<------>wait_for_completion(&hif_dev->fw_done);
 
<------>if (hif_dev->flags & HIF_USB_READY)
<------><------>ath9k_hif_usb_dealloc_urbs(hif_dev);
 
<------>return 0;
}
 
static int ath9k_hif_usb_resume(struct usb_interface *interface)
{
<------>struct hif_device_usb *hif_dev = usb_get_intfdata(interface);
<------>struct htc_target *htc_handle = hif_dev->htc_handle;
<------>int ret;
<------>const struct firmware *fw;
 
<------>ret = ath9k_hif_usb_alloc_urbs(hif_dev);
<------>if (ret)
<------><------>return ret;
 
<------>if (hif_dev->flags & HIF_USB_READY) {
<------><------>/* request cached firmware during suspend/resume cycle */
<------><------>ret = request_firmware(&fw, hif_dev->fw_name,
<------><------><------><------>       &hif_dev->udev->dev);
<------><------>if (ret)
<------><------><------>goto fail_resume;
 
<------><------>hif_dev->fw_data = fw->data;
<------><------>hif_dev->fw_size = fw->size;
<------><------>ret = ath9k_hif_usb_download_fw(hif_dev);
<------><------>release_firmware(fw);
<------><------>if (ret)
<------><------><------>goto fail_resume;
<------>} else {
<------><------>ath9k_hif_usb_dealloc_urbs(hif_dev);
<------><------>return -EIO;
<------>}
 
<------>mdelay(100);
 
<------>ret = ath9k_htc_resume(htc_handle);
 
<------>if (ret)
<------><------>goto fail_resume;
 
<------>return 0;
 
fail_resume:
<------>ath9k_hif_usb_dealloc_urbs(hif_dev);
 
<------>return ret;
}
#endif
 
static struct usb_driver ath9k_hif_usb_driver = {
<------>.name = KBUILD_MODNAME,
<------>.probe = ath9k_hif_usb_probe,
<------>.disconnect = ath9k_hif_usb_disconnect,
#ifdef CONFIG_PM
<------>.suspend = ath9k_hif_usb_suspend,
<------>.resume = ath9k_hif_usb_resume,
<------>.reset_resume = ath9k_hif_usb_resume,
#endif
<------>.id_table = ath9k_hif_usb_ids,
<------>.soft_unbind = 1,
<------>.disable_hub_initiated_lpm = 1,
};
 
int ath9k_hif_usb_init(void)
{
<------>return usb_register(&ath9k_hif_usb_driver);
}
 
void ath9k_hif_usb_exit(void)
{
<------>usb_deregister(&ath9k_hif_usb_driver);
}
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