2010-03-17 16:55:25 +08:00
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/*
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* Copyright (c) 2010 Atheros Communications Inc.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include "htc.h"
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#define ATH9K_FW_USB_DEV(devid, fw) \
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{ USB_DEVICE(0x0cf3, devid), .driver_info = (unsigned long) fw }
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static struct usb_device_id ath9k_hif_usb_ids[] = {
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ATH9K_FW_USB_DEV(0x9271, "ar9271.fw"),
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2010-04-01 12:58:24 +08:00
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ATH9K_FW_USB_DEV(0x1006, "ar9271.fw"),
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2010-03-17 16:55:25 +08:00
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{ },
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};
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MODULE_DEVICE_TABLE(usb, ath9k_hif_usb_ids);
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static int __hif_usb_tx(struct hif_device_usb *hif_dev);
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static void hif_usb_regout_cb(struct urb *urb)
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{
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struct cmd_buf *cmd = (struct cmd_buf *)urb->context;
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struct hif_device_usb *hif_dev = cmd->hif_dev;
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if (!hif_dev) {
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usb_free_urb(urb);
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if (cmd) {
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if (cmd->skb)
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dev_kfree_skb_any(cmd->skb);
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kfree(cmd);
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}
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return;
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}
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switch (urb->status) {
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case 0:
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break;
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case -ENOENT:
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case -ECONNRESET:
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break;
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case -ENODEV:
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case -ESHUTDOWN:
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return;
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default:
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break;
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}
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if (cmd) {
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ath9k_htc_txcompletion_cb(cmd->hif_dev->htc_handle,
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cmd->skb, 1);
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kfree(cmd);
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usb_free_urb(urb);
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}
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}
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static int hif_usb_send_regout(struct hif_device_usb *hif_dev,
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struct sk_buff *skb)
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{
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struct urb *urb;
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struct cmd_buf *cmd;
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int ret = 0;
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urb = usb_alloc_urb(0, GFP_KERNEL);
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if (urb == NULL)
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return -ENOMEM;
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cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
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if (cmd == NULL) {
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usb_free_urb(urb);
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return -ENOMEM;
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}
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cmd->skb = skb;
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cmd->hif_dev = hif_dev;
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usb_fill_int_urb(urb, hif_dev->udev,
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usb_sndintpipe(hif_dev->udev, USB_REG_OUT_PIPE),
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skb->data, skb->len,
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hif_usb_regout_cb, cmd, 1);
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ret = usb_submit_urb(urb, GFP_KERNEL);
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if (ret) {
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usb_free_urb(urb);
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kfree(cmd);
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}
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return ret;
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}
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static void hif_usb_tx_cb(struct urb *urb)
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{
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struct tx_buf *tx_buf = (struct tx_buf *) urb->context;
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struct hif_device_usb *hif_dev = tx_buf->hif_dev;
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struct sk_buff *skb;
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bool drop, flush;
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if (!hif_dev)
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return;
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switch (urb->status) {
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case 0:
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break;
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case -ENOENT:
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case -ECONNRESET:
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break;
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case -ENODEV:
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case -ESHUTDOWN:
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return;
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default:
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break;
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}
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if (tx_buf) {
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spin_lock(&hif_dev->tx.tx_lock);
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drop = !!(hif_dev->tx.flags & HIF_USB_TX_STOP);
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flush = !!(hif_dev->tx.flags & HIF_USB_TX_FLUSH);
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spin_unlock(&hif_dev->tx.tx_lock);
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while ((skb = __skb_dequeue(&tx_buf->skb_queue)) != NULL) {
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if (!drop && !flush) {
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ath9k_htc_txcompletion_cb(hif_dev->htc_handle,
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skb, 1);
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TX_STAT_INC(skb_completed);
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} else {
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dev_kfree_skb_any(skb);
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}
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}
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if (flush)
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return;
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tx_buf->len = tx_buf->offset = 0;
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__skb_queue_head_init(&tx_buf->skb_queue);
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spin_lock(&hif_dev->tx.tx_lock);
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list_del(&tx_buf->list);
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list_add_tail(&tx_buf->list, &hif_dev->tx.tx_buf);
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hif_dev->tx.tx_buf_cnt++;
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if (!drop)
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__hif_usb_tx(hif_dev); /* Check for pending SKBs */
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TX_STAT_INC(buf_completed);
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spin_unlock(&hif_dev->tx.tx_lock);
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}
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}
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/* TX lock has to be taken */
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static int __hif_usb_tx(struct hif_device_usb *hif_dev)
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{
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struct tx_buf *tx_buf = NULL;
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struct sk_buff *nskb = NULL;
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int ret = 0, i;
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u16 *hdr, tx_skb_cnt = 0;
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u8 *buf;
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if (hif_dev->tx.tx_skb_cnt == 0)
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return 0;
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/* Check if a free TX buffer is available */
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if (list_empty(&hif_dev->tx.tx_buf))
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return 0;
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tx_buf = list_first_entry(&hif_dev->tx.tx_buf, struct tx_buf, list);
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list_del(&tx_buf->list);
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list_add_tail(&tx_buf->list, &hif_dev->tx.tx_pending);
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hif_dev->tx.tx_buf_cnt--;
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tx_skb_cnt = min_t(u16, hif_dev->tx.tx_skb_cnt, MAX_TX_AGGR_NUM);
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for (i = 0; i < tx_skb_cnt; i++) {
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nskb = __skb_dequeue(&hif_dev->tx.tx_skb_queue);
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/* Should never be NULL */
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BUG_ON(!nskb);
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hif_dev->tx.tx_skb_cnt--;
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buf = tx_buf->buf;
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buf += tx_buf->offset;
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hdr = (u16 *)buf;
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*hdr++ = nskb->len;
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*hdr++ = ATH_USB_TX_STREAM_MODE_TAG;
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buf += 4;
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memcpy(buf, nskb->data, nskb->len);
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tx_buf->len = nskb->len + 4;
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if (i < (tx_skb_cnt - 1))
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tx_buf->offset += (((tx_buf->len - 1) / 4) + 1) * 4;
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if (i == (tx_skb_cnt - 1))
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tx_buf->len += tx_buf->offset;
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__skb_queue_tail(&tx_buf->skb_queue, nskb);
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TX_STAT_INC(skb_queued);
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}
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usb_fill_bulk_urb(tx_buf->urb, hif_dev->udev,
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usb_sndbulkpipe(hif_dev->udev, USB_WLAN_TX_PIPE),
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tx_buf->buf, tx_buf->len,
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hif_usb_tx_cb, tx_buf);
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ret = usb_submit_urb(tx_buf->urb, GFP_ATOMIC);
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if (ret) {
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tx_buf->len = tx_buf->offset = 0;
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__skb_queue_purge(&tx_buf->skb_queue);
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__skb_queue_head_init(&tx_buf->skb_queue);
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list_move_tail(&tx_buf->list, &hif_dev->tx.tx_buf);
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hif_dev->tx.tx_buf_cnt++;
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}
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if (!ret)
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TX_STAT_INC(buf_queued);
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return ret;
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}
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static int hif_usb_send_tx(struct hif_device_usb *hif_dev, struct sk_buff *skb,
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struct ath9k_htc_tx_ctl *tx_ctl)
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{
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unsigned long flags;
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spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
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if (hif_dev->tx.flags & HIF_USB_TX_STOP) {
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spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
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return -ENODEV;
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}
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/* Check if the max queue count has been reached */
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if (hif_dev->tx.tx_skb_cnt > MAX_TX_BUF_NUM) {
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spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
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return -ENOMEM;
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}
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__skb_queue_tail(&hif_dev->tx.tx_skb_queue, skb);
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hif_dev->tx.tx_skb_cnt++;
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/* Send normal frames immediately */
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if (!tx_ctl || (tx_ctl && (tx_ctl->type == ATH9K_HTC_NORMAL)))
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__hif_usb_tx(hif_dev);
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/* Check if AMPDUs have to be sent immediately */
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if (tx_ctl && (tx_ctl->type == ATH9K_HTC_AMPDU) &&
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(hif_dev->tx.tx_buf_cnt == MAX_TX_URB_NUM) &&
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(hif_dev->tx.tx_skb_cnt < 2)) {
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__hif_usb_tx(hif_dev);
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}
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spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
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return 0;
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}
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static void hif_usb_start(void *hif_handle, u8 pipe_id)
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{
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struct hif_device_usb *hif_dev = (struct hif_device_usb *)hif_handle;
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unsigned long flags;
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hif_dev->flags |= HIF_USB_START;
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spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
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hif_dev->tx.flags &= ~HIF_USB_TX_STOP;
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spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
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}
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static void hif_usb_stop(void *hif_handle, u8 pipe_id)
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{
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struct hif_device_usb *hif_dev = (struct hif_device_usb *)hif_handle;
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unsigned long flags;
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spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
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__skb_queue_purge(&hif_dev->tx.tx_skb_queue);
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hif_dev->tx.tx_skb_cnt = 0;
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hif_dev->tx.flags |= HIF_USB_TX_STOP;
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spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
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}
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static int hif_usb_send(void *hif_handle, u8 pipe_id, struct sk_buff *skb,
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struct ath9k_htc_tx_ctl *tx_ctl)
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{
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struct hif_device_usb *hif_dev = (struct hif_device_usb *)hif_handle;
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int ret = 0;
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switch (pipe_id) {
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case USB_WLAN_TX_PIPE:
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ret = hif_usb_send_tx(hif_dev, skb, tx_ctl);
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break;
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case USB_REG_OUT_PIPE:
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ret = hif_usb_send_regout(hif_dev, skb);
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break;
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default:
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2010-03-29 18:37:15 +08:00
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dev_err(&hif_dev->udev->dev,
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"ath9k_htc: Invalid TX pipe: %d\n", pipe_id);
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2010-03-17 16:55:25 +08:00
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ret = -EINVAL;
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break;
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}
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return ret;
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}
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static struct ath9k_htc_hif hif_usb = {
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.transport = ATH9K_HIF_USB,
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.name = "ath9k_hif_usb",
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.control_ul_pipe = USB_REG_OUT_PIPE,
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.control_dl_pipe = USB_REG_IN_PIPE,
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.start = hif_usb_start,
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.stop = hif_usb_stop,
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.send = hif_usb_send,
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};
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static void ath9k_hif_usb_rx_stream(struct hif_device_usb *hif_dev,
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struct sk_buff *skb)
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{
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struct sk_buff *nskb, *skb_pool[8];
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int index = 0, i = 0, chk_idx, len = skb->len;
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int rx_remain_len = 0, rx_pkt_len = 0;
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u16 pkt_len, pkt_tag, pool_index = 0;
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u8 *ptr;
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2010-04-06 17:58:11 +08:00
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spin_lock(&hif_dev->rx_lock);
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2010-03-17 16:55:25 +08:00
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rx_remain_len = hif_dev->rx_remain_len;
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rx_pkt_len = hif_dev->rx_transfer_len;
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if (rx_remain_len != 0) {
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struct sk_buff *remain_skb = hif_dev->remain_skb;
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if (remain_skb) {
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ptr = (u8 *) remain_skb->data;
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index = rx_remain_len;
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rx_remain_len -= hif_dev->rx_pad_len;
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ptr += rx_pkt_len;
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memcpy(ptr, skb->data, rx_remain_len);
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rx_pkt_len += rx_remain_len;
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hif_dev->rx_remain_len = 0;
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skb_put(remain_skb, rx_pkt_len);
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skb_pool[pool_index++] = remain_skb;
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} else {
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index = rx_remain_len;
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}
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}
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|
|
2010-04-06 17:58:11 +08:00
|
|
|
spin_unlock(&hif_dev->rx_lock);
|
|
|
|
|
2010-03-17 16:55:25 +08:00
|
|
|
while (index < len) {
|
|
|
|
ptr = (u8 *) skb->data;
|
|
|
|
|
|
|
|
pkt_len = ptr[index] + (ptr[index+1] << 8);
|
|
|
|
pkt_tag = ptr[index+2] + (ptr[index+3] << 8);
|
|
|
|
|
|
|
|
if (pkt_tag == ATH_USB_RX_STREAM_MODE_TAG) {
|
|
|
|
u16 pad_len;
|
|
|
|
|
|
|
|
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) {
|
2010-04-06 17:58:11 +08:00
|
|
|
spin_lock(&hif_dev->rx_lock);
|
2010-03-17 16:55:25 +08:00
|
|
|
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");
|
2010-04-06 17:58:11 +08:00
|
|
|
spin_unlock(&hif_dev->rx_lock);
|
2010-03-17 16:55:25 +08:00
|
|
|
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;
|
2010-04-06 17:58:11 +08:00
|
|
|
spin_unlock(&hif_dev->rx_lock);
|
2010-03-17 16:55:25 +08:00
|
|
|
} else {
|
|
|
|
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;
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
RX_STAT_INC(skb_dropped);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
err:
|
|
|
|
for (i = 0; i < pool_index; i++) {
|
|
|
|
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 sk_buff *skb = (struct sk_buff *) urb->context;
|
|
|
|
struct hif_device_usb *hif_dev = (struct hif_device_usb *)
|
|
|
|
usb_get_intfdata(usb_ifnum_to_if(urb->dev, 0));
|
|
|
|
int ret;
|
|
|
|
|
2010-03-29 18:37:15 +08:00
|
|
|
if (!skb)
|
|
|
|
return;
|
|
|
|
|
2010-03-17 16:55:25 +08:00
|
|
|
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);
|
|
|
|
|
2010-03-29 18:37:15 +08:00
|
|
|
usb_anchor_urb(urb, &hif_dev->rx_submitted);
|
2010-03-17 16:55:25 +08:00
|
|
|
ret = usb_submit_urb(urb, GFP_ATOMIC);
|
2010-03-29 18:37:15 +08:00
|
|
|
if (ret) {
|
|
|
|
usb_unanchor_urb(urb);
|
2010-03-17 16:55:25 +08:00
|
|
|
goto free;
|
2010-03-29 18:37:15 +08:00
|
|
|
}
|
2010-03-17 16:55:25 +08:00
|
|
|
|
|
|
|
return;
|
|
|
|
free:
|
|
|
|
dev_kfree_skb_any(skb);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void ath9k_hif_usb_reg_in_cb(struct urb *urb)
|
|
|
|
{
|
|
|
|
struct sk_buff *skb = (struct sk_buff *) urb->context;
|
|
|
|
struct sk_buff *nskb;
|
|
|
|
struct hif_device_usb *hif_dev = (struct hif_device_usb *)
|
|
|
|
usb_get_intfdata(usb_ifnum_to_if(urb->dev, 0));
|
|
|
|
int ret;
|
|
|
|
|
2010-03-29 18:37:15 +08:00
|
|
|
if (!skb)
|
|
|
|
return;
|
|
|
|
|
2010-03-17 16:55:25 +08:00
|
|
|
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);
|
|
|
|
|
|
|
|
nskb = __dev_alloc_skb(MAX_REG_IN_BUF_SIZE, GFP_ATOMIC);
|
|
|
|
if (!nskb)
|
|
|
|
goto resubmit;
|
|
|
|
|
|
|
|
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, nskb, 1);
|
|
|
|
|
|
|
|
ret = usb_submit_urb(urb, GFP_ATOMIC);
|
|
|
|
if (ret) {
|
|
|
|
dev_kfree_skb_any(nskb);
|
|
|
|
goto free;
|
|
|
|
}
|
|
|
|
|
|
|
|
ath9k_htc_rx_msg(hif_dev->htc_handle, skb,
|
|
|
|
skb->len, USB_REG_IN_PIPE);
|
|
|
|
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
resubmit:
|
|
|
|
skb_reset_tail_pointer(skb);
|
|
|
|
skb_trim(skb, 0);
|
|
|
|
|
|
|
|
ret = usb_submit_urb(urb, GFP_ATOMIC);
|
|
|
|
if (ret)
|
|
|
|
goto free;
|
|
|
|
|
|
|
|
return;
|
|
|
|
free:
|
|
|
|
dev_kfree_skb_any(skb);
|
2010-03-29 18:37:15 +08:00
|
|
|
urb->context = NULL;
|
2010-03-17 16:55:25 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
static void ath9k_hif_usb_dealloc_tx_urbs(struct hif_device_usb *hif_dev)
|
|
|
|
{
|
|
|
|
unsigned long flags;
|
|
|
|
struct tx_buf *tx_buf = NULL, *tx_buf_tmp = NULL;
|
|
|
|
|
|
|
|
list_for_each_entry_safe(tx_buf, tx_buf_tmp, &hif_dev->tx.tx_buf, list) {
|
|
|
|
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);
|
|
|
|
hif_dev->tx.flags |= HIF_USB_TX_FLUSH;
|
|
|
|
spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
|
|
|
|
|
|
|
|
list_for_each_entry_safe(tx_buf, tx_buf_tmp,
|
|
|
|
&hif_dev->tx.tx_pending, list) {
|
|
|
|
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);
|
|
|
|
hif_dev->tx.flags &= ~HIF_USB_TX_FLUSH;
|
|
|
|
spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
|
|
|
|
}
|
|
|
|
|
|
|
|
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);
|
|
|
|
|
|
|
|
for (i = 0; i < MAX_TX_URB_NUM; i++) {
|
|
|
|
tx_buf = kzalloc(sizeof(struct 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:
|
|
|
|
ath9k_hif_usb_dealloc_tx_urbs(hif_dev);
|
|
|
|
return -ENOMEM;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void ath9k_hif_usb_dealloc_rx_urbs(struct hif_device_usb *hif_dev)
|
|
|
|
{
|
2010-03-29 18:37:15 +08:00
|
|
|
usb_kill_anchored_urbs(&hif_dev->rx_submitted);
|
2010-03-17 16:55:25 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
static int ath9k_hif_usb_alloc_rx_urbs(struct hif_device_usb *hif_dev)
|
|
|
|
{
|
2010-03-29 18:37:15 +08:00
|
|
|
struct urb *urb = NULL;
|
|
|
|
struct sk_buff *skb = NULL;
|
2010-03-17 16:55:25 +08:00
|
|
|
int i, ret;
|
|
|
|
|
2010-03-29 18:37:15 +08:00
|
|
|
init_usb_anchor(&hif_dev->rx_submitted);
|
2010-04-06 17:58:11 +08:00
|
|
|
spin_lock_init(&hif_dev->rx_lock);
|
2010-03-29 18:37:15 +08:00
|
|
|
|
2010-03-17 16:55:25 +08:00
|
|
|
for (i = 0; i < MAX_RX_URB_NUM; i++) {
|
|
|
|
|
|
|
|
/* Allocate URB */
|
2010-03-29 18:37:15 +08:00
|
|
|
urb = usb_alloc_urb(0, GFP_KERNEL);
|
|
|
|
if (urb == NULL) {
|
2010-03-17 16:55:25 +08:00
|
|
|
ret = -ENOMEM;
|
2010-03-29 18:37:15 +08:00
|
|
|
goto err_urb;
|
2010-03-17 16:55:25 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
/* Allocate buffer */
|
2010-03-29 18:37:15 +08:00
|
|
|
skb = __dev_alloc_skb(MAX_RX_BUF_SIZE, GFP_KERNEL);
|
|
|
|
if (!skb) {
|
|
|
|
ret = -ENOMEM;
|
|
|
|
goto err_skb;
|
|
|
|
}
|
2010-03-17 16:55:25 +08:00
|
|
|
|
2010-03-29 18:37:15 +08:00
|
|
|
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, skb);
|
|
|
|
|
|
|
|
/* Anchor URB */
|
|
|
|
usb_anchor_urb(urb, &hif_dev->rx_submitted);
|
2010-03-17 16:55:25 +08:00
|
|
|
|
2010-03-29 18:37:15 +08:00
|
|
|
/* Submit URB */
|
|
|
|
ret = usb_submit_urb(urb, GFP_KERNEL);
|
|
|
|
if (ret) {
|
|
|
|
usb_unanchor_urb(urb);
|
|
|
|
goto err_submit;
|
|
|
|
}
|
2010-03-17 16:55:25 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
2010-03-29 18:37:15 +08:00
|
|
|
err_submit:
|
|
|
|
dev_kfree_skb_any(skb);
|
|
|
|
err_skb:
|
|
|
|
usb_free_urb(urb);
|
|
|
|
err_urb:
|
2010-03-17 16:55:25 +08:00
|
|
|
ath9k_hif_usb_dealloc_rx_urbs(hif_dev);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void ath9k_hif_usb_dealloc_reg_in_urb(struct hif_device_usb *hif_dev)
|
|
|
|
{
|
|
|
|
if (hif_dev->reg_in_urb) {
|
|
|
|
usb_kill_urb(hif_dev->reg_in_urb);
|
2010-03-29 18:37:15 +08:00
|
|
|
if (hif_dev->reg_in_urb->context)
|
|
|
|
dev_kfree_skb_any((void *)hif_dev->reg_in_urb->context);
|
2010-03-17 16:55:25 +08:00
|
|
|
usb_free_urb(hif_dev->reg_in_urb);
|
|
|
|
hif_dev->reg_in_urb = NULL;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static int ath9k_hif_usb_alloc_reg_in_urb(struct hif_device_usb *hif_dev)
|
|
|
|
{
|
|
|
|
struct sk_buff *skb;
|
|
|
|
|
|
|
|
hif_dev->reg_in_urb = usb_alloc_urb(0, GFP_KERNEL);
|
|
|
|
if (hif_dev->reg_in_urb == NULL)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
skb = __dev_alloc_skb(MAX_REG_IN_BUF_SIZE, GFP_KERNEL);
|
|
|
|
if (!skb)
|
|
|
|
goto err;
|
|
|
|
|
|
|
|
usb_fill_int_urb(hif_dev->reg_in_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, skb, 1);
|
|
|
|
|
|
|
|
if (usb_submit_urb(hif_dev->reg_in_urb, GFP_KERNEL) != 0)
|
2010-03-29 18:37:15 +08:00
|
|
|
goto err;
|
2010-03-17 16:55:25 +08:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
err:
|
|
|
|
ath9k_hif_usb_dealloc_reg_in_urb(hif_dev);
|
|
|
|
return -ENOMEM;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int ath9k_hif_usb_alloc_urbs(struct hif_device_usb *hif_dev)
|
|
|
|
{
|
|
|
|
/* 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;
|
|
|
|
|
|
|
|
/* Register Read/Write */
|
|
|
|
if (ath9k_hif_usb_alloc_reg_in_urb(hif_dev) < 0)
|
|
|
|
goto err;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
err:
|
|
|
|
return -ENOMEM;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int ath9k_hif_usb_download_fw(struct hif_device_usb *hif_dev)
|
|
|
|
{
|
|
|
|
int transfer, err;
|
|
|
|
const void *data = hif_dev->firmware->data;
|
|
|
|
size_t len = hif_dev->firmware->size;
|
|
|
|
u32 addr = AR9271_FIRMWARE;
|
|
|
|
u8 *buf = kzalloc(4096, GFP_KERNEL);
|
|
|
|
|
|
|
|
if (!buf)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
while (len) {
|
|
|
|
transfer = min_t(int, 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, HZ);
|
|
|
|
if (err < 0) {
|
|
|
|
kfree(buf);
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
len -= transfer;
|
|
|
|
data += transfer;
|
|
|
|
addr += transfer;
|
|
|
|
}
|
|
|
|
kfree(buf);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* 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,
|
|
|
|
AR9271_FIRMWARE_TEXT >> 8, 0, NULL, 0, HZ);
|
|
|
|
if (err)
|
|
|
|
return -EIO;
|
|
|
|
|
|
|
|
dev_info(&hif_dev->udev->dev, "ath9k_htc: Transferred FW: %s, size: %ld\n",
|
|
|
|
"ar9271.fw", (unsigned long) hif_dev->firmware->size);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int ath9k_hif_usb_dev_init(struct hif_device_usb *hif_dev,
|
|
|
|
const char *fw_name)
|
|
|
|
{
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
/* Request firmware */
|
|
|
|
ret = request_firmware(&hif_dev->firmware, fw_name, &hif_dev->udev->dev);
|
|
|
|
if (ret) {
|
|
|
|
dev_err(&hif_dev->udev->dev,
|
|
|
|
"ath9k_htc: Firmware - %s not found\n", fw_name);
|
|
|
|
goto err_fw_req;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Download firmware */
|
|
|
|
ret = ath9k_hif_usb_download_fw(hif_dev);
|
|
|
|
if (ret) {
|
|
|
|
dev_err(&hif_dev->udev->dev,
|
|
|
|
"ath9k_htc: Firmware - %s download failed\n", fw_name);
|
|
|
|
goto err_fw_download;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* 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");
|
|
|
|
goto err_urb;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
err_urb:
|
|
|
|
/* Nothing */
|
|
|
|
err_fw_download:
|
|
|
|
release_firmware(hif_dev->firmware);
|
|
|
|
err_fw_req:
|
|
|
|
hif_dev->firmware = NULL;
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void ath9k_hif_usb_dealloc_urbs(struct hif_device_usb *hif_dev)
|
|
|
|
{
|
|
|
|
ath9k_hif_usb_dealloc_reg_in_urb(hif_dev);
|
|
|
|
ath9k_hif_usb_dealloc_tx_urbs(hif_dev);
|
|
|
|
ath9k_hif_usb_dealloc_rx_urbs(hif_dev);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void ath9k_hif_usb_dev_deinit(struct hif_device_usb *hif_dev)
|
|
|
|
{
|
|
|
|
ath9k_hif_usb_dealloc_urbs(hif_dev);
|
|
|
|
if (hif_dev->firmware)
|
|
|
|
release_firmware(hif_dev->firmware);
|
|
|
|
}
|
|
|
|
|
|
|
|
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;
|
|
|
|
const char *fw_name = (const char *) id->driver_info;
|
|
|
|
int ret = 0;
|
|
|
|
|
|
|
|
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->device_id = id->idProduct;
|
|
|
|
#ifdef CONFIG_PM
|
|
|
|
udev->reset_resume = 1;
|
|
|
|
#endif
|
|
|
|
usb_set_intfdata(interface, hif_dev);
|
|
|
|
|
|
|
|
ret = ath9k_hif_usb_dev_init(hif_dev, fw_name);
|
|
|
|
if (ret) {
|
|
|
|
ret = -EINVAL;
|
|
|
|
goto err_hif_init_usb;
|
|
|
|
}
|
|
|
|
|
|
|
|
hif_dev->htc_handle = ath9k_htc_hw_alloc(hif_dev);
|
|
|
|
if (hif_dev->htc_handle == NULL) {
|
|
|
|
ret = -ENOMEM;
|
|
|
|
goto err_htc_hw_alloc;
|
|
|
|
}
|
|
|
|
|
|
|
|
ret = ath9k_htc_hw_init(&hif_usb, hif_dev->htc_handle, hif_dev,
|
|
|
|
&hif_dev->udev->dev, hif_dev->device_id,
|
|
|
|
ATH9K_HIF_USB);
|
|
|
|
if (ret) {
|
|
|
|
ret = -EINVAL;
|
|
|
|
goto err_htc_hw_init;
|
|
|
|
}
|
|
|
|
|
|
|
|
dev_info(&hif_dev->udev->dev, "ath9k_htc: USB layer initialized\n");
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
err_htc_hw_init:
|
|
|
|
ath9k_htc_hw_free(hif_dev->htc_handle);
|
|
|
|
err_htc_hw_alloc:
|
|
|
|
ath9k_hif_usb_dev_deinit(hif_dev);
|
|
|
|
err_hif_init_usb:
|
|
|
|
usb_set_intfdata(interface, NULL);
|
|
|
|
kfree(hif_dev);
|
|
|
|
usb_put_dev(udev);
|
|
|
|
err_alloc:
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void ath9k_hif_usb_disconnect(struct usb_interface *interface)
|
|
|
|
{
|
|
|
|
struct usb_device *udev = interface_to_usbdev(interface);
|
|
|
|
struct hif_device_usb *hif_dev =
|
|
|
|
(struct hif_device_usb *) usb_get_intfdata(interface);
|
|
|
|
|
|
|
|
if (hif_dev) {
|
|
|
|
ath9k_htc_hw_deinit(hif_dev->htc_handle, true);
|
|
|
|
ath9k_htc_hw_free(hif_dev->htc_handle);
|
|
|
|
ath9k_hif_usb_dev_deinit(hif_dev);
|
|
|
|
usb_set_intfdata(interface, NULL);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (hif_dev->flags & HIF_USB_START)
|
|
|
|
usb_reset_device(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 =
|
|
|
|
(struct hif_device_usb *) usb_get_intfdata(interface);
|
|
|
|
|
|
|
|
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 =
|
|
|
|
(struct hif_device_usb *) usb_get_intfdata(interface);
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
ret = ath9k_hif_usb_alloc_urbs(hif_dev);
|
|
|
|
if (ret)
|
|
|
|
return ret;
|
|
|
|
|
|
|
|
if (hif_dev->firmware) {
|
|
|
|
ret = ath9k_hif_usb_download_fw(hif_dev);
|
|
|
|
if (ret)
|
|
|
|
goto fail_resume;
|
|
|
|
} else {
|
|
|
|
ath9k_hif_usb_dealloc_urbs(hif_dev);
|
|
|
|
return -EIO;
|
|
|
|
}
|
|
|
|
|
|
|
|
mdelay(100);
|
|
|
|
|
|
|
|
ret = ath9k_htc_resume(hif_dev->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 = "ath9k_hif_usb",
|
|
|
|
.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,
|
|
|
|
};
|
|
|
|
|
|
|
|
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);
|
|
|
|
}
|