1499 lines
34 KiB
C
1499 lines
34 KiB
C
|
/*
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* Copyright (c) 2010-2011 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 <asm/unaligned.h>
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#include "htc.h"
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MODULE_FIRMWARE(HTC_7010_MODULE_FW);
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MODULE_FIRMWARE(HTC_9271_MODULE_FW);
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static struct usb_device_id ath9k_hif_usb_ids[] = {
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{ USB_DEVICE(0x0cf3, 0x9271) }, /* Atheros */
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{ USB_DEVICE(0x0cf3, 0x1006) }, /* Atheros */
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{ USB_DEVICE(0x0846, 0x9030) }, /* Netgear N150 */
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{ USB_DEVICE(0x07D1, 0x3A10) }, /* Dlink Wireless 150 */
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{ USB_DEVICE(0x13D3, 0x3327) }, /* Azurewave */
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{ USB_DEVICE(0x13D3, 0x3328) }, /* Azurewave */
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{ USB_DEVICE(0x13D3, 0x3346) }, /* IMC Networks */
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{ USB_DEVICE(0x13D3, 0x3348) }, /* Azurewave */
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{ USB_DEVICE(0x13D3, 0x3349) }, /* Azurewave */
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{ USB_DEVICE(0x13D3, 0x3350) }, /* Azurewave */
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{ USB_DEVICE(0x04CA, 0x4605) }, /* Liteon */
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{ USB_DEVICE(0x040D, 0x3801) }, /* VIA */
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{ USB_DEVICE(0x0cf3, 0xb003) }, /* Ubiquiti WifiStation Ext */
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{ USB_DEVICE(0x0cf3, 0xb002) }, /* Ubiquiti WifiStation */
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{ USB_DEVICE(0x057c, 0x8403) }, /* AVM FRITZ!WLAN 11N v2 USB */
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{ USB_DEVICE(0x0471, 0x209e) }, /* Philips (or NXP) PTA01 */
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{ USB_DEVICE(0x1eda, 0x2315) }, /* AirTies */
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{ USB_DEVICE(0x0cf3, 0x7015),
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.driver_info = AR9287_USB }, /* Atheros */
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{ USB_DEVICE(0x1668, 0x1200),
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.driver_info = AR9287_USB }, /* Verizon */
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{ USB_DEVICE(0x0cf3, 0x7010),
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.driver_info = AR9280_USB }, /* Atheros */
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{ USB_DEVICE(0x0846, 0x9018),
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.driver_info = AR9280_USB }, /* Netgear WNDA3200 */
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{ USB_DEVICE(0x083A, 0xA704),
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.driver_info = AR9280_USB }, /* SMC Networks */
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{ USB_DEVICE(0x0411, 0x017f),
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.driver_info = AR9280_USB }, /* Sony UWA-BR100 */
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{ USB_DEVICE(0x0411, 0x0197),
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.driver_info = AR9280_USB }, /* Buffalo WLI-UV-AG300P */
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{ USB_DEVICE(0x04da, 0x3904),
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.driver_info = AR9280_USB },
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{ USB_DEVICE(0x0930, 0x0a08),
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.driver_info = AR9280_USB }, /* Toshiba WLM-20U2 and GN-1080 */
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{ USB_DEVICE(0x0cf3, 0x20ff),
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.driver_info = STORAGE_DEVICE },
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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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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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case -ENODEV:
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case -ESHUTDOWN:
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goto free;
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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, true);
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kfree(cmd);
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}
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return;
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free:
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kfree_skb(cmd->skb);
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kfree(cmd);
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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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usb_anchor_urb(urb, &hif_dev->regout_submitted);
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ret = usb_submit_urb(urb, GFP_KERNEL);
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if (ret) {
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usb_unanchor_urb(urb);
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kfree(cmd);
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}
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usb_free_urb(urb);
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return ret;
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}
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static void hif_usb_mgmt_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;
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bool txok = true;
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if (!cmd || !cmd->skb || !cmd->hif_dev)
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return;
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hif_dev = cmd->hif_dev;
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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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case -ENODEV:
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case -ESHUTDOWN:
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txok = false;
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/*
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* If the URBs are being flushed, no need to complete
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* this packet.
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*/
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spin_lock(&hif_dev->tx.tx_lock);
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if (hif_dev->tx.flags & HIF_USB_TX_FLUSH) {
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spin_unlock(&hif_dev->tx.tx_lock);
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dev_kfree_skb_any(cmd->skb);
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kfree(cmd);
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return;
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}
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spin_unlock(&hif_dev->tx.tx_lock);
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break;
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default:
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txok = false;
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break;
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}
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skb_pull(cmd->skb, 4);
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ath9k_htc_txcompletion_cb(cmd->hif_dev->htc_handle,
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cmd->skb, txok);
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kfree(cmd);
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}
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static int hif_usb_send_mgmt(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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__le16 *hdr;
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urb = usb_alloc_urb(0, GFP_ATOMIC);
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if (urb == NULL)
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return -ENOMEM;
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cmd = kzalloc(sizeof(*cmd), GFP_ATOMIC);
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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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hdr = (__le16 *) skb_push(skb, 4);
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*hdr++ = cpu_to_le16(skb->len - 4);
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*hdr++ = cpu_to_le16(ATH_USB_TX_STREAM_MODE_TAG);
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usb_fill_bulk_urb(urb, hif_dev->udev,
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usb_sndbulkpipe(hif_dev->udev, USB_WLAN_TX_PIPE),
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skb->data, skb->len,
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hif_usb_mgmt_cb, cmd);
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usb_anchor_urb(urb, &hif_dev->mgmt_submitted);
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ret = usb_submit_urb(urb, GFP_ATOMIC);
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if (ret) {
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usb_unanchor_urb(urb);
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kfree(cmd);
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}
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usb_free_urb(urb);
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return ret;
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}
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static inline void ath9k_skb_queue_purge(struct hif_device_usb *hif_dev,
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struct sk_buff_head *list)
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{
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struct sk_buff *skb;
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while ((skb = __skb_dequeue(list)) != NULL) {
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dev_kfree_skb_any(skb);
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}
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}
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static inline void ath9k_skb_queue_complete(struct hif_device_usb *hif_dev,
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struct sk_buff_head *queue,
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bool txok)
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{
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struct sk_buff *skb;
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while ((skb = __skb_dequeue(queue)) != NULL) {
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#ifdef CONFIG_ATH9K_HTC_DEBUGFS
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int ln = skb->len;
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#endif
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ath9k_htc_txcompletion_cb(hif_dev->htc_handle,
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skb, txok);
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if (txok) {
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TX_STAT_INC(skb_success);
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TX_STAT_ADD(skb_success_bytes, ln);
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}
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else
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TX_STAT_INC(skb_failed);
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}
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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;
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bool txok = true;
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if (!tx_buf || !tx_buf->hif_dev)
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return;
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||
|
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hif_dev = tx_buf->hif_dev;
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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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||
|
case -ENODEV:
|
||
|
case -ESHUTDOWN:
|
||
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txok = false;
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||
|
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/*
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||
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* If the URBs are being flushed, no need to add this
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* URB to the free list.
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|
*/
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spin_lock(&hif_dev->tx.tx_lock);
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||
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if (hif_dev->tx.flags & HIF_USB_TX_FLUSH) {
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||
|
spin_unlock(&hif_dev->tx.tx_lock);
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||
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ath9k_skb_queue_purge(hif_dev, &tx_buf->skb_queue);
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||
|
return;
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|
}
|
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spin_unlock(&hif_dev->tx.tx_lock);
|
||
|
|
||
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break;
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|
default:
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||
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txok = false;
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break;
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}
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||
|
|
||
|
ath9k_skb_queue_complete(hif_dev, &tx_buf->skb_queue, txok);
|
||
|
|
||
|
/* Re-initialize the SKB queue */
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||
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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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||
|
|
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/* Add this TX buffer to the free list */
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spin_lock(&hif_dev->tx.tx_lock);
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||
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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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if (!(hif_dev->tx.flags & HIF_USB_TX_STOP))
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||
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__hif_usb_tx(hif_dev); /* Check for pending SKBs */
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||
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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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/* TX lock has to be taken */
|
||
|
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 tx_skb_cnt = 0;
|
||
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u8 *buf;
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__le16 *hdr;
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|
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if (hif_dev->tx.tx_skb_cnt == 0)
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return 0;
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|
|
||
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/* Check if a free TX buffer is available */
|
||
|
if (list_empty(&hif_dev->tx.tx_buf))
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||
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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_move_tail(&tx_buf->list, &hif_dev->tx.tx_pending);
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hif_dev->tx.tx_buf_cnt--;
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||
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|
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tx_skb_cnt = min_t(u16, hif_dev->tx.tx_skb_cnt, MAX_TX_AGGR_NUM);
|
||
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|
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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 = (struct hif_device_usb *)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 = (struct hif_device_usb *)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 = (struct hif_device_usb *)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 = (struct hif_device_usb *)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;
|
||
|
}
|
||
|
|
||
|
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, HZ);
|
||
|
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, HZ);
|
||
|
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, 2000);
|
||
|
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, HZ);
|
||
|
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_destoy_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);
|
||
|
}
|