| /* |
| * Copyright (c) 2010-2011 Atheros Communications Inc. |
| * |
| * Permission to use, copy, modify, and/or distribute this software for any |
| * purpose with or without fee is hereby granted, provided that the above |
| * copyright notice and this permission notice appear in all copies. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| */ |
| |
| #include <asm/unaligned.h> |
| #include "htc.h" |
| |
| MODULE_FIRMWARE(HTC_7010_MODULE_FW); |
| MODULE_FIRMWARE(HTC_9271_MODULE_FW); |
| |
| static const struct usb_device_id ath9k_hif_usb_ids[] = { |
| { USB_DEVICE(0x0cf3, 0x9271) }, /* Atheros */ |
| { USB_DEVICE(0x0cf3, 0x1006) }, /* Atheros */ |
| { USB_DEVICE(0x0846, 0x9030) }, /* Netgear N150 */ |
| { USB_DEVICE(0x07b8, 0x9271) }, /* Altai WA1011N-GU */ |
| { USB_DEVICE(0x07D1, 0x3A10) }, /* Dlink Wireless 150 */ |
| { USB_DEVICE(0x13D3, 0x3327) }, /* Azurewave */ |
| { USB_DEVICE(0x13D3, 0x3328) }, /* Azurewave */ |
| { USB_DEVICE(0x13D3, 0x3346) }, /* IMC Networks */ |
| { USB_DEVICE(0x13D3, 0x3348) }, /* Azurewave */ |
| { USB_DEVICE(0x13D3, 0x3349) }, /* Azurewave */ |
| { USB_DEVICE(0x13D3, 0x3350) }, /* Azurewave */ |
| { USB_DEVICE(0x04CA, 0x4605) }, /* Liteon */ |
| { USB_DEVICE(0x040D, 0x3801) }, /* VIA */ |
| { USB_DEVICE(0x0cf3, 0xb003) }, /* Ubiquiti WifiStation Ext */ |
| { USB_DEVICE(0x0cf3, 0xb002) }, /* Ubiquiti WifiStation */ |
| { USB_DEVICE(0x057c, 0x8403) }, /* AVM FRITZ!WLAN 11N v2 USB */ |
| { USB_DEVICE(0x0471, 0x209e) }, /* Philips (or NXP) PTA01 */ |
| { USB_DEVICE(0x1eda, 0x2315) }, /* AirTies */ |
| |
| { USB_DEVICE(0x0cf3, 0x7015), |
| .driver_info = AR9287_USB }, /* Atheros */ |
| { USB_DEVICE(0x1668, 0x1200), |
| .driver_info = AR9287_USB }, /* Verizon */ |
| |
| { USB_DEVICE(0x0cf3, 0x7010), |
| .driver_info = AR9280_USB }, /* Atheros */ |
| { USB_DEVICE(0x0846, 0x9018), |
| .driver_info = AR9280_USB }, /* Netgear WNDA3200 */ |
| { USB_DEVICE(0x083A, 0xA704), |
| .driver_info = AR9280_USB }, /* SMC Networks */ |
| { USB_DEVICE(0x0411, 0x017f), |
| .driver_info = AR9280_USB }, /* Sony UWA-BR100 */ |
| { USB_DEVICE(0x0411, 0x0197), |
| .driver_info = AR9280_USB }, /* Buffalo WLI-UV-AG300P */ |
| { USB_DEVICE(0x04da, 0x3904), |
| .driver_info = AR9280_USB }, |
| { USB_DEVICE(0x0930, 0x0a08), |
| .driver_info = AR9280_USB }, /* Toshiba WLM-20U2 and GN-1080 */ |
| |
| { USB_DEVICE(0x0cf3, 0x20ff), |
| .driver_info = STORAGE_DEVICE }, |
| |
| { }, |
| }; |
| |
| MODULE_DEVICE_TABLE(usb, ath9k_hif_usb_ids); |
| |
| static int __hif_usb_tx(struct hif_device_usb *hif_dev); |
| |
| static void hif_usb_regout_cb(struct urb *urb) |
| { |
| struct cmd_buf *cmd = (struct cmd_buf *)urb->context; |
| |
| switch (urb->status) { |
| case 0: |
| break; |
| case -ENOENT: |
| case -ECONNRESET: |
| case -ENODEV: |
| case -ESHUTDOWN: |
| goto free; |
| default: |
| break; |
| } |
| |
| if (cmd) { |
| ath9k_htc_txcompletion_cb(cmd->hif_dev->htc_handle, |
| cmd->skb, true); |
| kfree(cmd); |
| } |
| |
| return; |
| free: |
| kfree_skb(cmd->skb); |
| kfree(cmd); |
| } |
| |
| static int hif_usb_send_regout(struct hif_device_usb *hif_dev, |
| struct sk_buff *skb) |
| { |
| struct urb *urb; |
| struct cmd_buf *cmd; |
| int ret = 0; |
| |
| urb = usb_alloc_urb(0, GFP_KERNEL); |
| if (urb == NULL) |
| return -ENOMEM; |
| |
| cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
| if (cmd == NULL) { |
| usb_free_urb(urb); |
| return -ENOMEM; |
| } |
| |
| cmd->skb = skb; |
| cmd->hif_dev = hif_dev; |
| |
| usb_fill_int_urb(urb, hif_dev->udev, |
| usb_sndintpipe(hif_dev->udev, USB_REG_OUT_PIPE), |
| skb->data, skb->len, |
| hif_usb_regout_cb, cmd, 1); |
| |
| usb_anchor_urb(urb, &hif_dev->regout_submitted); |
| ret = usb_submit_urb(urb, GFP_KERNEL); |
| if (ret) { |
| usb_unanchor_urb(urb); |
| kfree(cmd); |
| } |
| usb_free_urb(urb); |
| |
| return ret; |
| } |
| |
| static void hif_usb_mgmt_cb(struct urb *urb) |
| { |
| struct cmd_buf *cmd = (struct cmd_buf *)urb->context; |
| struct hif_device_usb *hif_dev; |
| unsigned long flags; |
| bool txok = true; |
| |
| if (!cmd || !cmd->skb || !cmd->hif_dev) |
| return; |
| |
| hif_dev = cmd->hif_dev; |
| |
| switch (urb->status) { |
| case 0: |
| break; |
| case -ENOENT: |
| case -ECONNRESET: |
| case -ENODEV: |
| case -ESHUTDOWN: |
| txok = false; |
| |
| /* |
| * If the URBs are being flushed, no need to complete |
| * this packet. |
| */ |
| spin_lock_irqsave(&hif_dev->tx.tx_lock, flags); |
| if (hif_dev->tx.flags & HIF_USB_TX_FLUSH) { |
| spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags); |
| dev_kfree_skb_any(cmd->skb); |
| kfree(cmd); |
| return; |
| } |
| spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags); |
| |
| break; |
| default: |
| txok = false; |
| break; |
| } |
| |
| skb_pull(cmd->skb, 4); |
| ath9k_htc_txcompletion_cb(cmd->hif_dev->htc_handle, |
| cmd->skb, txok); |
| kfree(cmd); |
| } |
| |
| static int hif_usb_send_mgmt(struct hif_device_usb *hif_dev, |
| struct sk_buff *skb) |
| { |
| struct urb *urb; |
| struct cmd_buf *cmd; |
| int ret = 0; |
| __le16 *hdr; |
| |
| urb = usb_alloc_urb(0, GFP_ATOMIC); |
| if (urb == NULL) |
| return -ENOMEM; |
| |
| cmd = kzalloc(sizeof(*cmd), GFP_ATOMIC); |
| if (cmd == NULL) { |
| usb_free_urb(urb); |
| return -ENOMEM; |
| } |
| |
| cmd->skb = skb; |
| cmd->hif_dev = hif_dev; |
| |
| hdr = skb_push(skb, 4); |
| *hdr++ = cpu_to_le16(skb->len - 4); |
| *hdr++ = cpu_to_le16(ATH_USB_TX_STREAM_MODE_TAG); |
| |
| usb_fill_bulk_urb(urb, hif_dev->udev, |
| usb_sndbulkpipe(hif_dev->udev, USB_WLAN_TX_PIPE), |
| skb->data, skb->len, |
| hif_usb_mgmt_cb, cmd); |
| |
| usb_anchor_urb(urb, &hif_dev->mgmt_submitted); |
| ret = usb_submit_urb(urb, GFP_ATOMIC); |
| if (ret) { |
| usb_unanchor_urb(urb); |
| kfree(cmd); |
| } |
| usb_free_urb(urb); |
| |
| return ret; |
| } |
| |
| static inline void ath9k_skb_queue_purge(struct hif_device_usb *hif_dev, |
| struct sk_buff_head *list) |
| { |
| struct sk_buff *skb; |
| |
| while ((skb = __skb_dequeue(list)) != NULL) { |
| dev_kfree_skb_any(skb); |
| } |
| } |
| |
| static inline void ath9k_skb_queue_complete(struct hif_device_usb *hif_dev, |
| struct sk_buff_head *queue, |
| bool txok) |
| { |
| struct sk_buff *skb; |
| |
| while ((skb = __skb_dequeue(queue)) != NULL) { |
| #ifdef CONFIG_ATH9K_HTC_DEBUGFS |
| int ln = skb->len; |
| #endif |
| ath9k_htc_txcompletion_cb(hif_dev->htc_handle, |
| skb, txok); |
| if (txok) { |
| TX_STAT_INC(skb_success); |
| TX_STAT_ADD(skb_success_bytes, ln); |
| } |
| else |
| TX_STAT_INC(skb_failed); |
| } |
| } |
| |
| static void hif_usb_tx_cb(struct urb *urb) |
| { |
| struct tx_buf *tx_buf = (struct tx_buf *) urb->context; |
| struct hif_device_usb *hif_dev; |
| bool txok = true; |
| |
| if (!tx_buf || !tx_buf->hif_dev) |
| return; |
| |
| hif_dev = tx_buf->hif_dev; |
| |
| switch (urb->status) { |
| case 0: |
| break; |
| case -ENOENT: |
| case -ECONNRESET: |
| case -ENODEV: |
| case -ESHUTDOWN: |
| txok = false; |
| |
| /* |
| * If the URBs are being flushed, no need to add this |
| * URB to the free list. |
| */ |
| spin_lock(&hif_dev->tx.tx_lock); |
| if (hif_dev->tx.flags & HIF_USB_TX_FLUSH) { |
| spin_unlock(&hif_dev->tx.tx_lock); |
| ath9k_skb_queue_purge(hif_dev, &tx_buf->skb_queue); |
| return; |
| } |
| spin_unlock(&hif_dev->tx.tx_lock); |
| |
| break; |
| default: |
| txok = false; |
| break; |
| } |
| |
| ath9k_skb_queue_complete(hif_dev, &tx_buf->skb_queue, txok); |
| |
| /* Re-initialize the SKB queue */ |
| tx_buf->len = tx_buf->offset = 0; |
| __skb_queue_head_init(&tx_buf->skb_queue); |
| |
| /* Add this TX buffer to the free list */ |
| spin_lock(&hif_dev->tx.tx_lock); |
| list_move_tail(&tx_buf->list, &hif_dev->tx.tx_buf); |
| hif_dev->tx.tx_buf_cnt++; |
| if (!(hif_dev->tx.flags & HIF_USB_TX_STOP)) |
| __hif_usb_tx(hif_dev); /* Check for pending SKBs */ |
| TX_STAT_INC(buf_completed); |
| spin_unlock(&hif_dev->tx.tx_lock); |
| } |
| |
| /* TX lock has to be taken */ |
| static int __hif_usb_tx(struct hif_device_usb *hif_dev) |
| { |
| struct tx_buf *tx_buf = NULL; |
| struct sk_buff *nskb = NULL; |
| int ret = 0, i; |
| u16 tx_skb_cnt = 0; |
| u8 *buf; |
| __le16 *hdr; |
| |
| if (hif_dev->tx.tx_skb_cnt == 0) |
| return 0; |
| |
| /* Check if a free TX buffer is available */ |
| if (list_empty(&hif_dev->tx.tx_buf)) |
| return 0; |
| |
| tx_buf = list_first_entry(&hif_dev->tx.tx_buf, struct tx_buf, list); |
| list_move_tail(&tx_buf->list, &hif_dev->tx.tx_pending); |
| hif_dev->tx.tx_buf_cnt--; |
| |
| tx_skb_cnt = min_t(u16, hif_dev->tx.tx_skb_cnt, MAX_TX_AGGR_NUM); |
| |
| for (i = 0; i < tx_skb_cnt; i++) { |
| nskb = __skb_dequeue(&hif_dev->tx.tx_skb_queue); |
| |
| /* Should never be NULL */ |
| BUG_ON(!nskb); |
| |
| hif_dev->tx.tx_skb_cnt--; |
| |
| buf = tx_buf->buf; |
| buf += tx_buf->offset; |
| hdr = (__le16 *)buf; |
| *hdr++ = cpu_to_le16(nskb->len); |
| *hdr++ = cpu_to_le16(ATH_USB_TX_STREAM_MODE_TAG); |
| buf += 4; |
| memcpy(buf, nskb->data, nskb->len); |
| tx_buf->len = nskb->len + 4; |
| |
| if (i < (tx_skb_cnt - 1)) |
| tx_buf->offset += (((tx_buf->len - 1) / 4) + 1) * 4; |
| |
| if (i == (tx_skb_cnt - 1)) |
| tx_buf->len += tx_buf->offset; |
| |
| __skb_queue_tail(&tx_buf->skb_queue, nskb); |
| TX_STAT_INC(skb_queued); |
| } |
| |
| usb_fill_bulk_urb(tx_buf->urb, hif_dev->udev, |
| usb_sndbulkpipe(hif_dev->udev, USB_WLAN_TX_PIPE), |
| tx_buf->buf, tx_buf->len, |
| hif_usb_tx_cb, tx_buf); |
| |
| ret = usb_submit_urb(tx_buf->urb, GFP_ATOMIC); |
| if (ret) { |
| tx_buf->len = tx_buf->offset = 0; |
| ath9k_skb_queue_complete(hif_dev, &tx_buf->skb_queue, false); |
| __skb_queue_head_init(&tx_buf->skb_queue); |
| list_move_tail(&tx_buf->list, &hif_dev->tx.tx_buf); |
| hif_dev->tx.tx_buf_cnt++; |
| } |
| |
| if (!ret) |
| TX_STAT_INC(buf_queued); |
| |
| return ret; |
| } |
| |
| static int hif_usb_send_tx(struct hif_device_usb *hif_dev, struct sk_buff *skb) |
| { |
| struct ath9k_htc_tx_ctl *tx_ctl; |
| unsigned long flags; |
| int ret = 0; |
| |
| spin_lock_irqsave(&hif_dev->tx.tx_lock, flags); |
| |
| if (hif_dev->tx.flags & HIF_USB_TX_STOP) { |
| spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags); |
| return -ENODEV; |
| } |
| |
| /* Check if the max queue count has been reached */ |
| if (hif_dev->tx.tx_skb_cnt > MAX_TX_BUF_NUM) { |
| spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags); |
| return -ENOMEM; |
| } |
| |
| spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags); |
| |
| tx_ctl = HTC_SKB_CB(skb); |
| |
| /* Mgmt/Beacon frames don't use the TX buffer pool */ |
| if ((tx_ctl->type == ATH9K_HTC_MGMT) || |
| (tx_ctl->type == ATH9K_HTC_BEACON)) { |
| ret = hif_usb_send_mgmt(hif_dev, skb); |
| } |
| |
| spin_lock_irqsave(&hif_dev->tx.tx_lock, flags); |
| |
| if ((tx_ctl->type == ATH9K_HTC_NORMAL) || |
| (tx_ctl->type == ATH9K_HTC_AMPDU)) { |
| __skb_queue_tail(&hif_dev->tx.tx_skb_queue, skb); |
| hif_dev->tx.tx_skb_cnt++; |
| } |
| |
| /* Check if AMPDUs have to be sent immediately */ |
| if ((hif_dev->tx.tx_buf_cnt == MAX_TX_URB_NUM) && |
| (hif_dev->tx.tx_skb_cnt < 2)) { |
| __hif_usb_tx(hif_dev); |
| } |
| |
| spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags); |
| |
| return ret; |
| } |
| |
| static void hif_usb_start(void *hif_handle) |
| { |
| struct hif_device_usb *hif_dev = hif_handle; |
| unsigned long flags; |
| |
| hif_dev->flags |= HIF_USB_START; |
| |
| spin_lock_irqsave(&hif_dev->tx.tx_lock, flags); |
| hif_dev->tx.flags &= ~HIF_USB_TX_STOP; |
| spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags); |
| } |
| |
| static void hif_usb_stop(void *hif_handle) |
| { |
| struct hif_device_usb *hif_dev = hif_handle; |
| struct tx_buf *tx_buf = NULL, *tx_buf_tmp = NULL; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&hif_dev->tx.tx_lock, flags); |
| ath9k_skb_queue_complete(hif_dev, &hif_dev->tx.tx_skb_queue, false); |
| hif_dev->tx.tx_skb_cnt = 0; |
| hif_dev->tx.flags |= HIF_USB_TX_STOP; |
| spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags); |
| |
| /* The pending URBs have to be canceled. */ |
| list_for_each_entry_safe(tx_buf, tx_buf_tmp, |
| &hif_dev->tx.tx_pending, list) { |
| usb_kill_urb(tx_buf->urb); |
| } |
| |
| usb_kill_anchored_urbs(&hif_dev->mgmt_submitted); |
| } |
| |
| static int hif_usb_send(void *hif_handle, u8 pipe_id, struct sk_buff *skb) |
| { |
| struct hif_device_usb *hif_dev = hif_handle; |
| int ret = 0; |
| |
| switch (pipe_id) { |
| case USB_WLAN_TX_PIPE: |
| ret = hif_usb_send_tx(hif_dev, skb); |
| break; |
| case USB_REG_OUT_PIPE: |
| ret = hif_usb_send_regout(hif_dev, skb); |
| break; |
| default: |
| dev_err(&hif_dev->udev->dev, |
| "ath9k_htc: Invalid TX pipe: %d\n", pipe_id); |
| ret = -EINVAL; |
| break; |
| } |
| |
| return ret; |
| } |
| |
| static inline bool check_index(struct sk_buff *skb, u8 idx) |
| { |
| struct ath9k_htc_tx_ctl *tx_ctl; |
| |
| tx_ctl = HTC_SKB_CB(skb); |
| |
| if ((tx_ctl->type == ATH9K_HTC_AMPDU) && |
| (tx_ctl->sta_idx == idx)) |
| return true; |
| |
| return false; |
| } |
| |
| static void hif_usb_sta_drain(void *hif_handle, u8 idx) |
| { |
| struct hif_device_usb *hif_dev = hif_handle; |
| struct sk_buff *skb, *tmp; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&hif_dev->tx.tx_lock, flags); |
| |
| skb_queue_walk_safe(&hif_dev->tx.tx_skb_queue, skb, tmp) { |
| if (check_index(skb, idx)) { |
| __skb_unlink(skb, &hif_dev->tx.tx_skb_queue); |
| ath9k_htc_txcompletion_cb(hif_dev->htc_handle, |
| skb, false); |
| hif_dev->tx.tx_skb_cnt--; |
| TX_STAT_INC(skb_failed); |
| } |
| } |
| |
| spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags); |
| } |
| |
| static struct ath9k_htc_hif hif_usb = { |
| .transport = ATH9K_HIF_USB, |
| .name = "ath9k_hif_usb", |
| |
| .control_ul_pipe = USB_REG_OUT_PIPE, |
| .control_dl_pipe = USB_REG_IN_PIPE, |
| |
| .start = hif_usb_start, |
| .stop = hif_usb_stop, |
| .sta_drain = hif_usb_sta_drain, |
| .send = hif_usb_send, |
| }; |
| |
| static void ath9k_hif_usb_rx_stream(struct hif_device_usb *hif_dev, |
| struct sk_buff *skb) |
| { |
| struct sk_buff *nskb, *skb_pool[MAX_PKT_NUM_IN_TRANSFER]; |
| int index = 0, i, len = skb->len; |
| int rx_remain_len, rx_pkt_len; |
| u16 pool_index = 0; |
| u8 *ptr; |
| |
| spin_lock(&hif_dev->rx_lock); |
| |
| rx_remain_len = hif_dev->rx_remain_len; |
| rx_pkt_len = hif_dev->rx_transfer_len; |
| |
| if (rx_remain_len != 0) { |
| struct sk_buff *remain_skb = hif_dev->remain_skb; |
| |
| if (remain_skb) { |
| ptr = (u8 *) remain_skb->data; |
| |
| index = rx_remain_len; |
| rx_remain_len -= hif_dev->rx_pad_len; |
| ptr += rx_pkt_len; |
| |
| memcpy(ptr, skb->data, rx_remain_len); |
| |
| rx_pkt_len += rx_remain_len; |
| hif_dev->rx_remain_len = 0; |
| skb_put(remain_skb, rx_pkt_len); |
| |
| skb_pool[pool_index++] = remain_skb; |
| |
| } else { |
| index = rx_remain_len; |
| } |
| } |
| |
| spin_unlock(&hif_dev->rx_lock); |
| |
| while (index < len) { |
| u16 pkt_len; |
| u16 pkt_tag; |
| u16 pad_len; |
| int chk_idx; |
| |
| ptr = (u8 *) skb->data; |
| |
| pkt_len = get_unaligned_le16(ptr + index); |
| pkt_tag = get_unaligned_le16(ptr + index + 2); |
| |
| if (pkt_tag != ATH_USB_RX_STREAM_MODE_TAG) { |
| RX_STAT_INC(skb_dropped); |
| return; |
| } |
| |
| 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 { |
| 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 sk_buff *skb = (struct sk_buff *) urb->context; |
| struct hif_device_usb *hif_dev = |
| usb_get_intfdata(usb_ifnum_to_if(urb->dev, 0)); |
| 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); |
| } |
| |
| static void ath9k_hif_usb_reg_in_cb(struct urb *urb) |
| { |
| struct sk_buff *skb = (struct sk_buff *) urb->context; |
| struct sk_buff *nskb; |
| struct hif_device_usb *hif_dev = |
| usb_get_intfdata(usb_ifnum_to_if(urb->dev, 0)); |
| 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; |
| } |
| |
| usb_fill_int_urb(urb, hif_dev->udev, |
| usb_rcvintpipe(hif_dev->udev, |
| USB_REG_IN_PIPE), |
| nskb->data, MAX_REG_IN_BUF_SIZE, |
| ath9k_hif_usb_reg_in_cb, nskb, 1); |
| } |
| |
| 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); |
| 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; |
| |
| list_for_each_entry_safe(tx_buf, tx_buf_tmp, |
| &hif_dev->tx.tx_buf, list) { |
| usb_kill_urb(tx_buf->urb); |
| list_del(&tx_buf->list); |
| usb_free_urb(tx_buf->urb); |
| kfree(tx_buf->buf); |
| kfree(tx_buf); |
| } |
| |
| spin_lock_irqsave(&hif_dev->tx.tx_lock, flags); |
| hif_dev->tx.flags |= HIF_USB_TX_FLUSH; |
| spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags); |
| |
| list_for_each_entry_safe(tx_buf, tx_buf_tmp, |
| &hif_dev->tx.tx_pending, list) { |
| usb_kill_urb(tx_buf->urb); |
| list_del(&tx_buf->list); |
| usb_free_urb(tx_buf->urb); |
| kfree(tx_buf->buf); |
| kfree(tx_buf); |
| } |
| |
| 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(struct tx_buf), GFP_KERNEL); |
| if (!tx_buf) |
| goto err; |
| |
| tx_buf->buf = kzalloc(MAX_TX_BUF_SIZE, GFP_KERNEL); |
| if (!tx_buf->buf) |
| goto err; |
| |
| tx_buf->urb = usb_alloc_urb(0, GFP_KERNEL); |
| if (!tx_buf->urb) |
| goto err; |
| |
| tx_buf->hif_dev = hif_dev; |
| __skb_queue_head_init(&tx_buf->skb_queue); |
| |
| list_add_tail(&tx_buf->list, &hif_dev->tx.tx_buf); |
| } |
| |
| hif_dev->tx.tx_buf_cnt = MAX_TX_URB_NUM; |
| |
| return 0; |
| err: |
| 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 urb *urb = NULL; |
| struct sk_buff *skb = 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++) { |
| |
| /* 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; |
| } |
| |
| usb_fill_bulk_urb(urb, hif_dev->udev, |
| usb_rcvbulkpipe(hif_dev->udev, |
| USB_WLAN_RX_PIPE), |
| skb->data, MAX_RX_BUF_SIZE, |
| ath9k_hif_usb_rx_cb, skb); |
| |
| /* Anchor URB */ |
| usb_anchor_urb(urb, &hif_dev->rx_submitted); |
| |
| /* 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: |
| 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 urb *urb = NULL; |
| struct sk_buff *skb = NULL; |
| int i, ret; |
| |
| init_usb_anchor(&hif_dev->reg_in_submitted); |
| |
| for (i = 0; i < MAX_REG_IN_URB_NUM; i++) { |
| |
| /* 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; |
| } |
| |
| 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, skb, 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: |
| 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; |
| } |
| |
| static 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->altsetting[0]; |
| 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_htc_hw_free(hif_dev->htc_handle); |
| ath9k_hif_usb_dev_deinit(hif_dev); |
| } |
| |
| 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); |
| } |