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1501 lines
34 KiB
1501 lines
34 KiB
/* |
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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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|
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#include <asm/unaligned.h> |
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#include "htc.h" |
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|
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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 const 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(0x07b8, 0x9271) }, /* Altai WA1011N-GU */ |
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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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|
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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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|
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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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|
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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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}; |
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MODULE_DEVICE_TABLE(usb, ath9k_hif_usb_ids); |
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|
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static int __hif_usb_tx(struct hif_device_usb *hif_dev); |
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|
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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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|
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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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|
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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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|
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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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|
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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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unsigned long flags; |
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bool txok = true; |
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|
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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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/* |
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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_irqsave(&hif_dev->tx.tx_lock, flags); |
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if (hif_dev->tx.flags & HIF_USB_TX_FLUSH) { |
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spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags); |
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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_irqrestore(&hif_dev->tx.tx_lock, flags); |
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|
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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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|
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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 = 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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|
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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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|
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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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|
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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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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: |
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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 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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if (hif_dev->tx.flags & HIF_USB_TX_FLUSH) { |
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spin_unlock(&hif_dev->tx.tx_lock); |
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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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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); |
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|
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/* Re-initialize the SKB queue */ |
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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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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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__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 tx_skb_cnt = 0; |
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u8 *buf; |
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__le16 *hdr; |
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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_move_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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|
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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 = (__le16 *)buf; |
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*hdr++ = cpu_to_le16(nskb->len); |
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*hdr++ = cpu_to_le16(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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|
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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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|
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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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ath9k_skb_queue_complete(hif_dev, &tx_buf->skb_queue, false); |
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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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|
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if (!ret) |
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TX_STAT_INC(buf_queued); |
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|
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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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{ |
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struct ath9k_htc_tx_ctl *tx_ctl; |
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unsigned long flags; |
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int ret = 0; |
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|
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spin_lock_irqsave(&hif_dev->tx.tx_lock, flags); |
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|
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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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|
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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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|
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spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags); |
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tx_ctl = HTC_SKB_CB(skb); |
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|
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/* Mgmt/Beacon frames don't use the TX buffer pool */ |
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if ((tx_ctl->type == ATH9K_HTC_MGMT) || |
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(tx_ctl->type == ATH9K_HTC_BEACON)) { |
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ret = hif_usb_send_mgmt(hif_dev, skb); |
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} |
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spin_lock_irqsave(&hif_dev->tx.tx_lock, flags); |
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|
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if ((tx_ctl->type == ATH9K_HTC_NORMAL) || |
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(tx_ctl->type == ATH9K_HTC_AMPDU)) { |
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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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} |
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|
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/* Check if AMPDUs have to be sent immediately */ |
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if ((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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|
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spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags); |
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|
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return ret; |
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} |
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|
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static void hif_usb_start(void *hif_handle) |
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{ |
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struct hif_device_usb *hif_dev = hif_handle; |
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unsigned long flags; |
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|
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hif_dev->flags |= HIF_USB_START; |
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|
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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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|
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static void hif_usb_stop(void *hif_handle) |
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{ |
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struct hif_device_usb *hif_dev = hif_handle; |
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struct tx_buf *tx_buf = NULL, *tx_buf_tmp = NULL; |
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unsigned long flags; |
|
|
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spin_lock_irqsave(&hif_dev->tx.tx_lock, flags); |
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ath9k_skb_queue_complete(hif_dev, &hif_dev->tx.tx_skb_queue, false); |
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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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/* The pending URBs have to be canceled. */ |
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spin_lock_irqsave(&hif_dev->tx.tx_lock, flags); |
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list_for_each_entry_safe(tx_buf, tx_buf_tmp, |
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&hif_dev->tx.tx_pending, list) { |
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usb_get_urb(tx_buf->urb); |
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spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags); |
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usb_kill_urb(tx_buf->urb); |
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list_del(&tx_buf->list); |
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usb_free_urb(tx_buf->urb); |
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kfree(tx_buf->buf); |
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kfree(tx_buf); |
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spin_lock_irqsave(&hif_dev->tx.tx_lock, flags); |
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} |
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spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags); |
|
|
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usb_kill_anchored_urbs(&hif_dev->mgmt_submitted); |
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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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{ |
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struct hif_device_usb *hif_dev = 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); |
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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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dev_err(&hif_dev->udev->dev, |
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"ath9k_htc: Invalid TX pipe: %d\n", pipe_id); |
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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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static inline bool check_index(struct sk_buff *skb, u8 idx) |
|
{ |
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struct ath9k_htc_tx_ctl *tx_ctl; |
|
|
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tx_ctl = HTC_SKB_CB(skb); |
|
|
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if ((tx_ctl->type == ATH9K_HTC_AMPDU) && |
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(tx_ctl->sta_idx == idx)) |
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return true; |
|
|
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return false; |
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} |
|
|
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static void hif_usb_sta_drain(void *hif_handle, u8 idx) |
|
{ |
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struct hif_device_usb *hif_dev = hif_handle; |
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struct sk_buff *skb, *tmp; |
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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_walk_safe(&hif_dev->tx.tx_skb_queue, skb, tmp) { |
|
if (check_index(skb, idx)) { |
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__skb_unlink(skb, &hif_dev->tx.tx_skb_queue); |
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ath9k_htc_txcompletion_cb(hif_dev->htc_handle, |
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skb, false); |
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hif_dev->tx.tx_skb_cnt--; |
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TX_STAT_INC(skb_failed); |
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} |
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} |
|
|
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spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags); |
|
} |
|
|
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static struct ath9k_htc_hif hif_usb = { |
|
.transport = ATH9K_HIF_USB, |
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.name = "ath9k_hif_usb", |
|
|
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.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, |
|
USB_MSG_TIMEOUT); |
|
if (err < 0) { |
|
kfree(buf); |
|
return err; |
|
} |
|
|
|
len -= transfer; |
|
data += transfer; |
|
addr += transfer; |
|
} |
|
kfree(buf); |
|
|
|
if (IS_AR7010_DEVICE(hif_dev->usb_device_id->driver_info)) |
|
firm_offset = AR7010_FIRMWARE_TEXT; |
|
else |
|
firm_offset = AR9271_FIRMWARE_TEXT; |
|
|
|
/* |
|
* Issue FW download complete command to firmware. |
|
*/ |
|
err = usb_control_msg(hif_dev->udev, usb_sndctrlpipe(hif_dev->udev, 0), |
|
FIRMWARE_DOWNLOAD_COMP, |
|
0x40 | USB_DIR_OUT, |
|
firm_offset >> 8, 0, NULL, 0, USB_MSG_TIMEOUT); |
|
if (err) |
|
return -EIO; |
|
|
|
dev_info(&hif_dev->udev->dev, "ath9k_htc: Transferred FW: %s, size: %ld\n", |
|
hif_dev->fw_name, (unsigned long) hif_dev->fw_size); |
|
|
|
return 0; |
|
} |
|
|
|
static int ath9k_hif_usb_dev_init(struct hif_device_usb *hif_dev) |
|
{ |
|
int ret; |
|
|
|
ret = ath9k_hif_usb_download_fw(hif_dev); |
|
if (ret) { |
|
dev_err(&hif_dev->udev->dev, |
|
"ath9k_htc: Firmware - %s download failed\n", |
|
hif_dev->fw_name); |
|
return ret; |
|
} |
|
|
|
/* Alloc URBs */ |
|
ret = ath9k_hif_usb_alloc_urbs(hif_dev); |
|
if (ret) { |
|
dev_err(&hif_dev->udev->dev, |
|
"ath9k_htc: Unable to allocate URBs\n"); |
|
return ret; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static void ath9k_hif_usb_dev_deinit(struct hif_device_usb *hif_dev) |
|
{ |
|
ath9k_hif_usb_dealloc_urbs(hif_dev); |
|
} |
|
|
|
/* |
|
* If initialization fails or the FW cannot be retrieved, |
|
* detach the device. |
|
*/ |
|
static void ath9k_hif_usb_firmware_fail(struct hif_device_usb *hif_dev) |
|
{ |
|
struct device *dev = &hif_dev->udev->dev; |
|
struct device *parent = dev->parent; |
|
|
|
complete_all(&hif_dev->fw_done); |
|
|
|
if (parent) |
|
device_lock(parent); |
|
|
|
device_release_driver(dev); |
|
|
|
if (parent) |
|
device_unlock(parent); |
|
} |
|
|
|
static void ath9k_hif_usb_firmware_cb(const struct firmware *fw, void *context); |
|
|
|
/* taken from iwlwifi */ |
|
static int ath9k_hif_request_firmware(struct hif_device_usb *hif_dev, |
|
bool first) |
|
{ |
|
char index[8], *chip; |
|
int ret; |
|
|
|
if (first) { |
|
if (htc_use_dev_fw) { |
|
hif_dev->fw_minor_index = FIRMWARE_MINOR_IDX_MAX + 1; |
|
sprintf(index, "%s", "dev"); |
|
} else { |
|
hif_dev->fw_minor_index = FIRMWARE_MINOR_IDX_MAX; |
|
sprintf(index, "%d", hif_dev->fw_minor_index); |
|
} |
|
} else { |
|
hif_dev->fw_minor_index--; |
|
sprintf(index, "%d", hif_dev->fw_minor_index); |
|
} |
|
|
|
/* test for FW 1.3 */ |
|
if (MAJOR_VERSION_REQ == 1 && hif_dev->fw_minor_index == 3) { |
|
const char *filename; |
|
|
|
if (IS_AR7010_DEVICE(hif_dev->usb_device_id->driver_info)) |
|
filename = FIRMWARE_AR7010_1_1; |
|
else |
|
filename = FIRMWARE_AR9271; |
|
|
|
/* expected fw locations: |
|
* - htc_9271.fw (stable version 1.3, depricated) |
|
*/ |
|
snprintf(hif_dev->fw_name, sizeof(hif_dev->fw_name), |
|
"%s", filename); |
|
|
|
} else if (hif_dev->fw_minor_index < FIRMWARE_MINOR_IDX_MIN) { |
|
dev_err(&hif_dev->udev->dev, "no suitable firmware found!\n"); |
|
|
|
return -ENOENT; |
|
} else { |
|
if (IS_AR7010_DEVICE(hif_dev->usb_device_id->driver_info)) |
|
chip = "7010"; |
|
else |
|
chip = "9271"; |
|
|
|
/* expected fw locations: |
|
* - ath9k_htc/htc_9271-1.dev.0.fw (development version) |
|
* - ath9k_htc/htc_9271-1.4.0.fw (stable version) |
|
*/ |
|
snprintf(hif_dev->fw_name, sizeof(hif_dev->fw_name), |
|
"%s/htc_%s-%d.%s.0.fw", HTC_FW_PATH, |
|
chip, MAJOR_VERSION_REQ, index); |
|
} |
|
|
|
ret = request_firmware_nowait(THIS_MODULE, true, hif_dev->fw_name, |
|
&hif_dev->udev->dev, GFP_KERNEL, |
|
hif_dev, ath9k_hif_usb_firmware_cb); |
|
if (ret) { |
|
dev_err(&hif_dev->udev->dev, |
|
"ath9k_htc: Async request for firmware %s failed\n", |
|
hif_dev->fw_name); |
|
return ret; |
|
} |
|
|
|
dev_info(&hif_dev->udev->dev, "ath9k_htc: Firmware %s requested\n", |
|
hif_dev->fw_name); |
|
|
|
return ret; |
|
} |
|
|
|
static void ath9k_hif_usb_firmware_cb(const struct firmware *fw, void *context) |
|
{ |
|
struct hif_device_usb *hif_dev = context; |
|
int ret; |
|
|
|
if (!fw) { |
|
ret = ath9k_hif_request_firmware(hif_dev, false); |
|
if (!ret) |
|
return; |
|
|
|
dev_err(&hif_dev->udev->dev, |
|
"ath9k_htc: Failed to get firmware %s\n", |
|
hif_dev->fw_name); |
|
goto err_fw; |
|
} |
|
|
|
hif_dev->htc_handle = ath9k_htc_hw_alloc(hif_dev, &hif_usb, |
|
&hif_dev->udev->dev); |
|
if (hif_dev->htc_handle == NULL) |
|
goto err_dev_alloc; |
|
|
|
hif_dev->fw_data = fw->data; |
|
hif_dev->fw_size = fw->size; |
|
|
|
/* Proceed with initialization */ |
|
|
|
ret = ath9k_hif_usb_dev_init(hif_dev); |
|
if (ret) |
|
goto err_dev_init; |
|
|
|
ret = ath9k_htc_hw_init(hif_dev->htc_handle, |
|
&hif_dev->interface->dev, |
|
hif_dev->usb_device_id->idProduct, |
|
hif_dev->udev->product, |
|
hif_dev->usb_device_id->driver_info); |
|
if (ret) { |
|
ret = -EINVAL; |
|
goto err_htc_hw_init; |
|
} |
|
|
|
release_firmware(fw); |
|
hif_dev->flags |= HIF_USB_READY; |
|
complete_all(&hif_dev->fw_done); |
|
|
|
return; |
|
|
|
err_htc_hw_init: |
|
ath9k_hif_usb_dev_deinit(hif_dev); |
|
err_dev_init: |
|
ath9k_htc_hw_free(hif_dev->htc_handle); |
|
err_dev_alloc: |
|
release_firmware(fw); |
|
err_fw: |
|
ath9k_hif_usb_firmware_fail(hif_dev); |
|
} |
|
|
|
/* |
|
* An exact copy of the function from zd1211rw. |
|
*/ |
|
static int send_eject_command(struct usb_interface *interface) |
|
{ |
|
struct usb_device *udev = interface_to_usbdev(interface); |
|
struct usb_host_interface *iface_desc = interface->cur_altsetting; |
|
struct usb_endpoint_descriptor *endpoint; |
|
unsigned char *cmd; |
|
u8 bulk_out_ep; |
|
int r; |
|
|
|
if (iface_desc->desc.bNumEndpoints < 2) |
|
return -ENODEV; |
|
|
|
/* Find bulk out endpoint */ |
|
for (r = 1; r >= 0; r--) { |
|
endpoint = &iface_desc->endpoint[r].desc; |
|
if (usb_endpoint_dir_out(endpoint) && |
|
usb_endpoint_xfer_bulk(endpoint)) { |
|
bulk_out_ep = endpoint->bEndpointAddress; |
|
break; |
|
} |
|
} |
|
if (r == -1) { |
|
dev_err(&udev->dev, |
|
"ath9k_htc: Could not find bulk out endpoint\n"); |
|
return -ENODEV; |
|
} |
|
|
|
cmd = kzalloc(31, GFP_KERNEL); |
|
if (cmd == NULL) |
|
return -ENODEV; |
|
|
|
/* USB bulk command block */ |
|
cmd[0] = 0x55; /* bulk command signature */ |
|
cmd[1] = 0x53; /* bulk command signature */ |
|
cmd[2] = 0x42; /* bulk command signature */ |
|
cmd[3] = 0x43; /* bulk command signature */ |
|
cmd[14] = 6; /* command length */ |
|
|
|
cmd[15] = 0x1b; /* SCSI command: START STOP UNIT */ |
|
cmd[19] = 0x2; /* eject disc */ |
|
|
|
dev_info(&udev->dev, "Ejecting storage device...\n"); |
|
r = usb_bulk_msg(udev, usb_sndbulkpipe(udev, bulk_out_ep), |
|
cmd, 31, NULL, 2 * USB_MSG_TIMEOUT); |
|
kfree(cmd); |
|
if (r) |
|
return r; |
|
|
|
/* At this point, the device disconnects and reconnects with the real |
|
* ID numbers. */ |
|
|
|
usb_set_intfdata(interface, NULL); |
|
return 0; |
|
} |
|
|
|
static int ath9k_hif_usb_probe(struct usb_interface *interface, |
|
const struct usb_device_id *id) |
|
{ |
|
struct usb_device *udev = interface_to_usbdev(interface); |
|
struct hif_device_usb *hif_dev; |
|
int ret = 0; |
|
|
|
if (id->driver_info == STORAGE_DEVICE) |
|
return send_eject_command(interface); |
|
|
|
hif_dev = kzalloc(sizeof(struct hif_device_usb), GFP_KERNEL); |
|
if (!hif_dev) { |
|
ret = -ENOMEM; |
|
goto err_alloc; |
|
} |
|
|
|
usb_get_dev(udev); |
|
|
|
hif_dev->udev = udev; |
|
hif_dev->interface = interface; |
|
hif_dev->usb_device_id = id; |
|
#ifdef CONFIG_PM |
|
udev->reset_resume = 1; |
|
#endif |
|
usb_set_intfdata(interface, hif_dev); |
|
|
|
init_completion(&hif_dev->fw_done); |
|
|
|
ret = ath9k_hif_request_firmware(hif_dev, true); |
|
if (ret) |
|
goto err_fw_req; |
|
|
|
return ret; |
|
|
|
err_fw_req: |
|
usb_set_intfdata(interface, NULL); |
|
kfree(hif_dev); |
|
usb_put_dev(udev); |
|
err_alloc: |
|
return ret; |
|
} |
|
|
|
static void ath9k_hif_usb_reboot(struct usb_device *udev) |
|
{ |
|
u32 reboot_cmd = 0xffffffff; |
|
void *buf; |
|
int ret; |
|
|
|
buf = kmemdup(&reboot_cmd, 4, GFP_KERNEL); |
|
if (!buf) |
|
return; |
|
|
|
ret = usb_interrupt_msg(udev, usb_sndintpipe(udev, USB_REG_OUT_PIPE), |
|
buf, 4, NULL, USB_MSG_TIMEOUT); |
|
if (ret) |
|
dev_err(&udev->dev, "ath9k_htc: USB reboot failed\n"); |
|
|
|
kfree(buf); |
|
} |
|
|
|
static void ath9k_hif_usb_disconnect(struct usb_interface *interface) |
|
{ |
|
struct usb_device *udev = interface_to_usbdev(interface); |
|
struct hif_device_usb *hif_dev = usb_get_intfdata(interface); |
|
bool unplugged = (udev->state == USB_STATE_NOTATTACHED) ? true : false; |
|
|
|
if (!hif_dev) |
|
return; |
|
|
|
wait_for_completion(&hif_dev->fw_done); |
|
|
|
if (hif_dev->flags & HIF_USB_READY) { |
|
ath9k_htc_hw_deinit(hif_dev->htc_handle, unplugged); |
|
ath9k_hif_usb_dev_deinit(hif_dev); |
|
ath9k_destroy_wmi(hif_dev->htc_handle->drv_priv); |
|
ath9k_htc_hw_free(hif_dev->htc_handle); |
|
} |
|
|
|
usb_set_intfdata(interface, NULL); |
|
|
|
/* If firmware was loaded we should drop it |
|
* go back to first stage bootloader. */ |
|
if (!unplugged && (hif_dev->flags & HIF_USB_READY)) |
|
ath9k_hif_usb_reboot(udev); |
|
|
|
kfree(hif_dev); |
|
dev_info(&udev->dev, "ath9k_htc: USB layer deinitialized\n"); |
|
usb_put_dev(udev); |
|
} |
|
|
|
#ifdef CONFIG_PM |
|
static int ath9k_hif_usb_suspend(struct usb_interface *interface, |
|
pm_message_t message) |
|
{ |
|
struct hif_device_usb *hif_dev = usb_get_intfdata(interface); |
|
|
|
/* |
|
* The device has to be set to FULLSLEEP mode in case no |
|
* interface is up. |
|
*/ |
|
if (!(hif_dev->flags & HIF_USB_START)) |
|
ath9k_htc_suspend(hif_dev->htc_handle); |
|
|
|
wait_for_completion(&hif_dev->fw_done); |
|
|
|
if (hif_dev->flags & HIF_USB_READY) |
|
ath9k_hif_usb_dealloc_urbs(hif_dev); |
|
|
|
return 0; |
|
} |
|
|
|
static int ath9k_hif_usb_resume(struct usb_interface *interface) |
|
{ |
|
struct hif_device_usb *hif_dev = usb_get_intfdata(interface); |
|
struct htc_target *htc_handle = hif_dev->htc_handle; |
|
int ret; |
|
const struct firmware *fw; |
|
|
|
ret = ath9k_hif_usb_alloc_urbs(hif_dev); |
|
if (ret) |
|
return ret; |
|
|
|
if (hif_dev->flags & HIF_USB_READY) { |
|
/* request cached firmware during suspend/resume cycle */ |
|
ret = request_firmware(&fw, hif_dev->fw_name, |
|
&hif_dev->udev->dev); |
|
if (ret) |
|
goto fail_resume; |
|
|
|
hif_dev->fw_data = fw->data; |
|
hif_dev->fw_size = fw->size; |
|
ret = ath9k_hif_usb_download_fw(hif_dev); |
|
release_firmware(fw); |
|
if (ret) |
|
goto fail_resume; |
|
} else { |
|
ath9k_hif_usb_dealloc_urbs(hif_dev); |
|
return -EIO; |
|
} |
|
|
|
mdelay(100); |
|
|
|
ret = ath9k_htc_resume(htc_handle); |
|
|
|
if (ret) |
|
goto fail_resume; |
|
|
|
return 0; |
|
|
|
fail_resume: |
|
ath9k_hif_usb_dealloc_urbs(hif_dev); |
|
|
|
return ret; |
|
} |
|
#endif |
|
|
|
static struct usb_driver ath9k_hif_usb_driver = { |
|
.name = KBUILD_MODNAME, |
|
.probe = ath9k_hif_usb_probe, |
|
.disconnect = ath9k_hif_usb_disconnect, |
|
#ifdef CONFIG_PM |
|
.suspend = ath9k_hif_usb_suspend, |
|
.resume = ath9k_hif_usb_resume, |
|
.reset_resume = ath9k_hif_usb_resume, |
|
#endif |
|
.id_table = ath9k_hif_usb_ids, |
|
.soft_unbind = 1, |
|
.disable_hub_initiated_lpm = 1, |
|
}; |
|
|
|
int ath9k_hif_usb_init(void) |
|
{ |
|
return usb_register(&ath9k_hif_usb_driver); |
|
} |
|
|
|
void ath9k_hif_usb_exit(void) |
|
{ |
|
usb_deregister(&ath9k_hif_usb_driver); |
|
}
|
|
|