1053 lines
27 KiB
C
1053 lines
27 KiB
C
/*
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* Marvell Wireless LAN device driver: USB specific handling
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*
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* Copyright (C) 2012, Marvell International Ltd.
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*
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* This software file (the "File") is distributed by Marvell International
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* Ltd. under the terms of the GNU General Public License Version 2, June 1991
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* (the "License"). You may use, redistribute and/or modify this File in
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* accordance with the terms and conditions of the License, a copy of which
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* is available by writing to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
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* worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
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*
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* THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
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* ARE EXPRESSLY DISCLAIMED. The License provides additional details about
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* this warranty disclaimer.
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*/
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#include "main.h"
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#include "usb.h"
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#define USB_VERSION "1.0"
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static u8 user_rmmod;
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static struct mwifiex_if_ops usb_ops;
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static struct semaphore add_remove_card_sem;
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static struct usb_device_id mwifiex_usb_table[] = {
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/* 8797 */
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{USB_DEVICE(USB8XXX_VID, USB8797_PID_1)},
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{USB_DEVICE_AND_INTERFACE_INFO(USB8XXX_VID, USB8797_PID_2,
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USB_CLASS_VENDOR_SPEC,
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USB_SUBCLASS_VENDOR_SPEC, 0xff)},
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/* 8897 */
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{USB_DEVICE(USB8XXX_VID, USB8897_PID_1)},
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{USB_DEVICE_AND_INTERFACE_INFO(USB8XXX_VID, USB8897_PID_2,
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USB_CLASS_VENDOR_SPEC,
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USB_SUBCLASS_VENDOR_SPEC, 0xff)},
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{ } /* Terminating entry */
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};
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MODULE_DEVICE_TABLE(usb, mwifiex_usb_table);
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static int mwifiex_usb_submit_rx_urb(struct urb_context *ctx, int size);
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/* This function handles received packet. Necessary action is taken based on
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* cmd/event/data.
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*/
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static int mwifiex_usb_recv(struct mwifiex_adapter *adapter,
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struct sk_buff *skb, u8 ep)
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{
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struct device *dev = adapter->dev;
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u32 recv_type;
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__le32 tmp;
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int ret;
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if (adapter->hs_activated)
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mwifiex_process_hs_config(adapter);
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if (skb->len < INTF_HEADER_LEN) {
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dev_err(dev, "%s: invalid skb->len\n", __func__);
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return -1;
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}
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switch (ep) {
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case MWIFIEX_USB_EP_CMD_EVENT:
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dev_dbg(dev, "%s: EP_CMD_EVENT\n", __func__);
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skb_copy_from_linear_data(skb, &tmp, INTF_HEADER_LEN);
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recv_type = le32_to_cpu(tmp);
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skb_pull(skb, INTF_HEADER_LEN);
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switch (recv_type) {
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case MWIFIEX_USB_TYPE_CMD:
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if (skb->len > MWIFIEX_SIZE_OF_CMD_BUFFER) {
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dev_err(dev, "CMD: skb->len too large\n");
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ret = -1;
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goto exit_restore_skb;
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} else if (!adapter->curr_cmd) {
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dev_dbg(dev, "CMD: no curr_cmd\n");
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if (adapter->ps_state == PS_STATE_SLEEP_CFM) {
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mwifiex_process_sleep_confirm_resp(
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adapter, skb->data,
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skb->len);
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ret = 0;
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goto exit_restore_skb;
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}
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ret = -1;
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goto exit_restore_skb;
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}
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adapter->curr_cmd->resp_skb = skb;
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adapter->cmd_resp_received = true;
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break;
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case MWIFIEX_USB_TYPE_EVENT:
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if (skb->len < sizeof(u32)) {
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dev_err(dev, "EVENT: skb->len too small\n");
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ret = -1;
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goto exit_restore_skb;
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}
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skb_copy_from_linear_data(skb, &tmp, sizeof(u32));
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adapter->event_cause = le32_to_cpu(tmp);
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dev_dbg(dev, "event_cause %#x\n", adapter->event_cause);
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if (skb->len > MAX_EVENT_SIZE) {
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dev_err(dev, "EVENT: event body too large\n");
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ret = -1;
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goto exit_restore_skb;
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}
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memcpy(adapter->event_body, skb->data +
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MWIFIEX_EVENT_HEADER_LEN, skb->len);
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adapter->event_received = true;
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adapter->event_skb = skb;
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break;
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default:
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dev_err(dev, "unknown recv_type %#x\n", recv_type);
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return -1;
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}
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break;
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case MWIFIEX_USB_EP_DATA:
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dev_dbg(dev, "%s: EP_DATA\n", __func__);
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if (skb->len > MWIFIEX_RX_DATA_BUF_SIZE) {
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dev_err(dev, "DATA: skb->len too large\n");
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return -1;
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}
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skb_queue_tail(&adapter->usb_rx_data_q, skb);
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adapter->data_received = true;
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break;
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default:
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dev_err(dev, "%s: unknown endport %#x\n", __func__, ep);
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return -1;
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}
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return -EINPROGRESS;
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exit_restore_skb:
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/* The buffer will be reused for further cmds/events */
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skb_push(skb, INTF_HEADER_LEN);
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return ret;
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}
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static void mwifiex_usb_rx_complete(struct urb *urb)
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{
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struct urb_context *context = (struct urb_context *)urb->context;
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struct mwifiex_adapter *adapter = context->adapter;
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struct sk_buff *skb = context->skb;
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struct usb_card_rec *card;
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int recv_length = urb->actual_length;
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int size, status;
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if (!adapter || !adapter->card) {
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pr_err("mwifiex adapter or card structure is not valid\n");
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return;
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}
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card = (struct usb_card_rec *)adapter->card;
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if (card->rx_cmd_ep == context->ep)
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atomic_dec(&card->rx_cmd_urb_pending);
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else
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atomic_dec(&card->rx_data_urb_pending);
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if (recv_length) {
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if (urb->status || (adapter->surprise_removed)) {
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dev_err(adapter->dev,
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"URB status is failed: %d\n", urb->status);
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/* Do not free skb in case of command ep */
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if (card->rx_cmd_ep != context->ep)
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dev_kfree_skb_any(skb);
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goto setup_for_next;
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}
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if (skb->len > recv_length)
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skb_trim(skb, recv_length);
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else
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skb_put(skb, recv_length - skb->len);
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atomic_inc(&adapter->rx_pending);
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status = mwifiex_usb_recv(adapter, skb, context->ep);
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dev_dbg(adapter->dev, "info: recv_length=%d, status=%d\n",
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recv_length, status);
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if (status == -EINPROGRESS) {
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queue_work(adapter->workqueue, &adapter->main_work);
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/* urb for data_ep is re-submitted now;
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* urb for cmd_ep will be re-submitted in callback
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* mwifiex_usb_recv_complete
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*/
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if (card->rx_cmd_ep == context->ep)
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return;
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} else {
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atomic_dec(&adapter->rx_pending);
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if (status == -1)
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dev_err(adapter->dev,
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"received data processing failed!\n");
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/* Do not free skb in case of command ep */
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if (card->rx_cmd_ep != context->ep)
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dev_kfree_skb_any(skb);
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}
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} else if (urb->status) {
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if (!adapter->is_suspended) {
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dev_warn(adapter->dev,
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"Card is removed: %d\n", urb->status);
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adapter->surprise_removed = true;
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}
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dev_kfree_skb_any(skb);
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return;
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} else {
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/* Do not free skb in case of command ep */
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if (card->rx_cmd_ep != context->ep)
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dev_kfree_skb_any(skb);
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/* fall through setup_for_next */
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}
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setup_for_next:
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if (card->rx_cmd_ep == context->ep)
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size = MWIFIEX_RX_CMD_BUF_SIZE;
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else
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size = MWIFIEX_RX_DATA_BUF_SIZE;
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mwifiex_usb_submit_rx_urb(context, size);
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return;
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}
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static void mwifiex_usb_tx_complete(struct urb *urb)
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{
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struct urb_context *context = (struct urb_context *)(urb->context);
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struct mwifiex_adapter *adapter = context->adapter;
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struct usb_card_rec *card = adapter->card;
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dev_dbg(adapter->dev, "%s: status: %d\n", __func__, urb->status);
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if (context->ep == card->tx_cmd_ep) {
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dev_dbg(adapter->dev, "%s: CMD\n", __func__);
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atomic_dec(&card->tx_cmd_urb_pending);
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adapter->cmd_sent = false;
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} else {
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dev_dbg(adapter->dev, "%s: DATA\n", __func__);
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atomic_dec(&card->tx_data_urb_pending);
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mwifiex_write_data_complete(adapter, context->skb, 0,
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urb->status ? -1 : 0);
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}
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queue_work(adapter->workqueue, &adapter->main_work);
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return;
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}
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static int mwifiex_usb_submit_rx_urb(struct urb_context *ctx, int size)
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{
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struct mwifiex_adapter *adapter = ctx->adapter;
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struct usb_card_rec *card = (struct usb_card_rec *)adapter->card;
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if (card->rx_cmd_ep != ctx->ep) {
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ctx->skb = dev_alloc_skb(size);
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if (!ctx->skb) {
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dev_err(adapter->dev,
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"%s: dev_alloc_skb failed\n", __func__);
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return -ENOMEM;
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}
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}
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usb_fill_bulk_urb(ctx->urb, card->udev,
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usb_rcvbulkpipe(card->udev, ctx->ep), ctx->skb->data,
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size, mwifiex_usb_rx_complete, (void *)ctx);
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if (card->rx_cmd_ep == ctx->ep)
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atomic_inc(&card->rx_cmd_urb_pending);
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else
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atomic_inc(&card->rx_data_urb_pending);
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if (usb_submit_urb(ctx->urb, GFP_ATOMIC)) {
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dev_err(adapter->dev, "usb_submit_urb failed\n");
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dev_kfree_skb_any(ctx->skb);
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ctx->skb = NULL;
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if (card->rx_cmd_ep == ctx->ep)
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atomic_dec(&card->rx_cmd_urb_pending);
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else
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atomic_dec(&card->rx_data_urb_pending);
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return -1;
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}
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return 0;
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}
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static void mwifiex_usb_free(struct usb_card_rec *card)
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{
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int i;
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if (atomic_read(&card->rx_cmd_urb_pending) && card->rx_cmd.urb)
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usb_kill_urb(card->rx_cmd.urb);
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usb_free_urb(card->rx_cmd.urb);
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card->rx_cmd.urb = NULL;
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if (atomic_read(&card->rx_data_urb_pending))
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for (i = 0; i < MWIFIEX_RX_DATA_URB; i++)
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if (card->rx_data_list[i].urb)
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usb_kill_urb(card->rx_data_list[i].urb);
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for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) {
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usb_free_urb(card->rx_data_list[i].urb);
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card->rx_data_list[i].urb = NULL;
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}
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for (i = 0; i < MWIFIEX_TX_DATA_URB; i++) {
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usb_free_urb(card->tx_data_list[i].urb);
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card->tx_data_list[i].urb = NULL;
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}
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usb_free_urb(card->tx_cmd.urb);
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card->tx_cmd.urb = NULL;
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return;
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}
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/* This function probes an mwifiex device and registers it. It allocates
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* the card structure, initiates the device registration and initialization
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* procedure by adding a logical interface.
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*/
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static int mwifiex_usb_probe(struct usb_interface *intf,
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const struct usb_device_id *id)
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{
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struct usb_device *udev = interface_to_usbdev(intf);
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struct usb_host_interface *iface_desc = intf->cur_altsetting;
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struct usb_endpoint_descriptor *epd;
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int ret, i;
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struct usb_card_rec *card;
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u16 id_vendor, id_product, bcd_device, bcd_usb;
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card = kzalloc(sizeof(struct usb_card_rec), GFP_KERNEL);
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if (!card)
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return -ENOMEM;
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id_vendor = le16_to_cpu(udev->descriptor.idVendor);
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id_product = le16_to_cpu(udev->descriptor.idProduct);
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bcd_device = le16_to_cpu(udev->descriptor.bcdDevice);
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bcd_usb = le16_to_cpu(udev->descriptor.bcdUSB);
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pr_debug("info: VID/PID = %X/%X, Boot2 version = %X\n",
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id_vendor, id_product, bcd_device);
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/* PID_1 is used for firmware downloading only */
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switch (id_product) {
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case USB8797_PID_1:
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case USB8897_PID_1:
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card->usb_boot_state = USB8XXX_FW_DNLD;
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break;
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case USB8797_PID_2:
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case USB8897_PID_2:
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card->usb_boot_state = USB8XXX_FW_READY;
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break;
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default:
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pr_warning("unknown id_product %#x\n", id_product);
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card->usb_boot_state = USB8XXX_FW_DNLD;
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break;
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}
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card->udev = udev;
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card->intf = intf;
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pr_debug("info: bcdUSB=%#x Device Class=%#x SubClass=%#x Protocol=%#x\n",
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udev->descriptor.bcdUSB, udev->descriptor.bDeviceClass,
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udev->descriptor.bDeviceSubClass,
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udev->descriptor.bDeviceProtocol);
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for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
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epd = &iface_desc->endpoint[i].desc;
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if (usb_endpoint_dir_in(epd) &&
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usb_endpoint_num(epd) == MWIFIEX_USB_EP_CMD_EVENT &&
|
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usb_endpoint_xfer_bulk(epd)) {
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pr_debug("info: bulk IN: max pkt size: %d, addr: %d\n",
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le16_to_cpu(epd->wMaxPacketSize),
|
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epd->bEndpointAddress);
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card->rx_cmd_ep = usb_endpoint_num(epd);
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atomic_set(&card->rx_cmd_urb_pending, 0);
|
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}
|
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if (usb_endpoint_dir_in(epd) &&
|
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usb_endpoint_num(epd) == MWIFIEX_USB_EP_DATA &&
|
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usb_endpoint_xfer_bulk(epd)) {
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pr_debug("info: bulk IN: max pkt size: %d, addr: %d\n",
|
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le16_to_cpu(epd->wMaxPacketSize),
|
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epd->bEndpointAddress);
|
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card->rx_data_ep = usb_endpoint_num(epd);
|
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atomic_set(&card->rx_data_urb_pending, 0);
|
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}
|
|
if (usb_endpoint_dir_out(epd) &&
|
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usb_endpoint_num(epd) == MWIFIEX_USB_EP_DATA &&
|
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usb_endpoint_xfer_bulk(epd)) {
|
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pr_debug("info: bulk OUT: max pkt size: %d, addr: %d\n",
|
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le16_to_cpu(epd->wMaxPacketSize),
|
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epd->bEndpointAddress);
|
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card->tx_data_ep = usb_endpoint_num(epd);
|
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atomic_set(&card->tx_data_urb_pending, 0);
|
|
}
|
|
if (usb_endpoint_dir_out(epd) &&
|
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usb_endpoint_num(epd) == MWIFIEX_USB_EP_CMD_EVENT &&
|
|
usb_endpoint_xfer_bulk(epd)) {
|
|
pr_debug("info: bulk OUT: max pkt size: %d, addr: %d\n",
|
|
le16_to_cpu(epd->wMaxPacketSize),
|
|
epd->bEndpointAddress);
|
|
card->tx_cmd_ep = usb_endpoint_num(epd);
|
|
atomic_set(&card->tx_cmd_urb_pending, 0);
|
|
card->bulk_out_maxpktsize =
|
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le16_to_cpu(epd->wMaxPacketSize);
|
|
}
|
|
}
|
|
|
|
usb_set_intfdata(intf, card);
|
|
|
|
ret = mwifiex_add_card(card, &add_remove_card_sem, &usb_ops,
|
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MWIFIEX_USB);
|
|
if (ret) {
|
|
pr_err("%s: mwifiex_add_card failed: %d\n", __func__, ret);
|
|
usb_reset_device(udev);
|
|
kfree(card);
|
|
return ret;
|
|
}
|
|
|
|
usb_get_dev(udev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Kernel needs to suspend all functions separately. Therefore all
|
|
* registered functions must have drivers with suspend and resume
|
|
* methods. Failing that the kernel simply removes the whole card.
|
|
*
|
|
* If already not suspended, this function allocates and sends a
|
|
* 'host sleep activate' request to the firmware and turns off the traffic.
|
|
*/
|
|
static int mwifiex_usb_suspend(struct usb_interface *intf, pm_message_t message)
|
|
{
|
|
struct usb_card_rec *card = usb_get_intfdata(intf);
|
|
struct mwifiex_adapter *adapter;
|
|
int i;
|
|
|
|
if (!card || !card->adapter) {
|
|
pr_err("%s: card or card->adapter is NULL\n", __func__);
|
|
return 0;
|
|
}
|
|
adapter = card->adapter;
|
|
|
|
if (unlikely(adapter->is_suspended))
|
|
dev_warn(adapter->dev, "Device already suspended\n");
|
|
|
|
mwifiex_enable_hs(adapter);
|
|
|
|
/* 'is_suspended' flag indicates device is suspended.
|
|
* It must be set here before the usb_kill_urb() calls. Reason
|
|
* is in the complete handlers, urb->status(= -ENOENT) and
|
|
* this flag is used in combination to distinguish between a
|
|
* 'suspended' state and a 'disconnect' one.
|
|
*/
|
|
adapter->is_suspended = true;
|
|
adapter->hs_enabling = false;
|
|
|
|
if (atomic_read(&card->rx_cmd_urb_pending) && card->rx_cmd.urb)
|
|
usb_kill_urb(card->rx_cmd.urb);
|
|
|
|
if (atomic_read(&card->rx_data_urb_pending))
|
|
for (i = 0; i < MWIFIEX_RX_DATA_URB; i++)
|
|
if (card->rx_data_list[i].urb)
|
|
usb_kill_urb(card->rx_data_list[i].urb);
|
|
|
|
for (i = 0; i < MWIFIEX_TX_DATA_URB; i++)
|
|
if (card->tx_data_list[i].urb)
|
|
usb_kill_urb(card->tx_data_list[i].urb);
|
|
|
|
if (card->tx_cmd.urb)
|
|
usb_kill_urb(card->tx_cmd.urb);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Kernel needs to suspend all functions separately. Therefore all
|
|
* registered functions must have drivers with suspend and resume
|
|
* methods. Failing that the kernel simply removes the whole card.
|
|
*
|
|
* If already not resumed, this function turns on the traffic and
|
|
* sends a 'host sleep cancel' request to the firmware.
|
|
*/
|
|
static int mwifiex_usb_resume(struct usb_interface *intf)
|
|
{
|
|
struct usb_card_rec *card = usb_get_intfdata(intf);
|
|
struct mwifiex_adapter *adapter;
|
|
int i;
|
|
|
|
if (!card || !card->adapter) {
|
|
pr_err("%s: card or card->adapter is NULL\n", __func__);
|
|
return 0;
|
|
}
|
|
adapter = card->adapter;
|
|
|
|
if (unlikely(!adapter->is_suspended)) {
|
|
dev_warn(adapter->dev, "Device already resumed\n");
|
|
return 0;
|
|
}
|
|
|
|
/* Indicate device resumed. The netdev queue will be resumed only
|
|
* after the urbs have been re-submitted
|
|
*/
|
|
adapter->is_suspended = false;
|
|
|
|
if (!atomic_read(&card->rx_data_urb_pending))
|
|
for (i = 0; i < MWIFIEX_RX_DATA_URB; i++)
|
|
mwifiex_usb_submit_rx_urb(&card->rx_data_list[i],
|
|
MWIFIEX_RX_DATA_BUF_SIZE);
|
|
|
|
if (!atomic_read(&card->rx_cmd_urb_pending)) {
|
|
card->rx_cmd.skb = dev_alloc_skb(MWIFIEX_RX_CMD_BUF_SIZE);
|
|
if (card->rx_cmd.skb)
|
|
mwifiex_usb_submit_rx_urb(&card->rx_cmd,
|
|
MWIFIEX_RX_CMD_BUF_SIZE);
|
|
}
|
|
|
|
/* Disable Host Sleep */
|
|
if (adapter->hs_activated)
|
|
mwifiex_cancel_hs(mwifiex_get_priv(adapter,
|
|
MWIFIEX_BSS_ROLE_ANY),
|
|
MWIFIEX_ASYNC_CMD);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void mwifiex_usb_disconnect(struct usb_interface *intf)
|
|
{
|
|
struct usb_card_rec *card = usb_get_intfdata(intf);
|
|
struct mwifiex_adapter *adapter;
|
|
|
|
if (!card || !card->adapter) {
|
|
pr_err("%s: card or card->adapter is NULL\n", __func__);
|
|
return;
|
|
}
|
|
|
|
adapter = card->adapter;
|
|
if (!adapter->priv_num)
|
|
return;
|
|
|
|
if (user_rmmod) {
|
|
#ifdef CONFIG_PM
|
|
if (adapter->is_suspended)
|
|
mwifiex_usb_resume(intf);
|
|
#endif
|
|
|
|
mwifiex_deauthenticate_all(adapter);
|
|
|
|
mwifiex_init_shutdown_fw(mwifiex_get_priv(adapter,
|
|
MWIFIEX_BSS_ROLE_ANY),
|
|
MWIFIEX_FUNC_SHUTDOWN);
|
|
}
|
|
|
|
mwifiex_usb_free(card);
|
|
|
|
dev_dbg(adapter->dev, "%s: removing card\n", __func__);
|
|
mwifiex_remove_card(adapter, &add_remove_card_sem);
|
|
|
|
usb_set_intfdata(intf, NULL);
|
|
usb_put_dev(interface_to_usbdev(intf));
|
|
kfree(card);
|
|
|
|
return;
|
|
}
|
|
|
|
static struct usb_driver mwifiex_usb_driver = {
|
|
.name = "mwifiex_usb",
|
|
.probe = mwifiex_usb_probe,
|
|
.disconnect = mwifiex_usb_disconnect,
|
|
.id_table = mwifiex_usb_table,
|
|
.suspend = mwifiex_usb_suspend,
|
|
.resume = mwifiex_usb_resume,
|
|
.soft_unbind = 1,
|
|
};
|
|
|
|
static int mwifiex_usb_tx_init(struct mwifiex_adapter *adapter)
|
|
{
|
|
struct usb_card_rec *card = (struct usb_card_rec *)adapter->card;
|
|
int i;
|
|
|
|
card->tx_cmd.adapter = adapter;
|
|
card->tx_cmd.ep = card->tx_cmd_ep;
|
|
|
|
card->tx_cmd.urb = usb_alloc_urb(0, GFP_KERNEL);
|
|
if (!card->tx_cmd.urb) {
|
|
dev_err(adapter->dev, "tx_cmd.urb allocation failed\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
card->tx_data_ix = 0;
|
|
|
|
for (i = 0; i < MWIFIEX_TX_DATA_URB; i++) {
|
|
card->tx_data_list[i].adapter = adapter;
|
|
card->tx_data_list[i].ep = card->tx_data_ep;
|
|
|
|
card->tx_data_list[i].urb = usb_alloc_urb(0, GFP_KERNEL);
|
|
if (!card->tx_data_list[i].urb) {
|
|
dev_err(adapter->dev,
|
|
"tx_data_list[] urb allocation failed\n");
|
|
return -ENOMEM;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mwifiex_usb_rx_init(struct mwifiex_adapter *adapter)
|
|
{
|
|
struct usb_card_rec *card = (struct usb_card_rec *)adapter->card;
|
|
int i;
|
|
|
|
card->rx_cmd.adapter = adapter;
|
|
card->rx_cmd.ep = card->rx_cmd_ep;
|
|
|
|
card->rx_cmd.urb = usb_alloc_urb(0, GFP_KERNEL);
|
|
if (!card->rx_cmd.urb) {
|
|
dev_err(adapter->dev, "rx_cmd.urb allocation failed\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
card->rx_cmd.skb = dev_alloc_skb(MWIFIEX_RX_CMD_BUF_SIZE);
|
|
if (!card->rx_cmd.skb) {
|
|
dev_err(adapter->dev, "rx_cmd.skb allocation failed\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
if (mwifiex_usb_submit_rx_urb(&card->rx_cmd, MWIFIEX_RX_CMD_BUF_SIZE))
|
|
return -1;
|
|
|
|
for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) {
|
|
card->rx_data_list[i].adapter = adapter;
|
|
card->rx_data_list[i].ep = card->rx_data_ep;
|
|
|
|
card->rx_data_list[i].urb = usb_alloc_urb(0, GFP_KERNEL);
|
|
if (!card->rx_data_list[i].urb) {
|
|
dev_err(adapter->dev,
|
|
"rx_data_list[] urb allocation failed\n");
|
|
return -1;
|
|
}
|
|
if (mwifiex_usb_submit_rx_urb(&card->rx_data_list[i],
|
|
MWIFIEX_RX_DATA_BUF_SIZE))
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mwifiex_write_data_sync(struct mwifiex_adapter *adapter, u8 *pbuf,
|
|
u32 *len, u8 ep, u32 timeout)
|
|
{
|
|
struct usb_card_rec *card = adapter->card;
|
|
int actual_length, ret;
|
|
|
|
if (!(*len % card->bulk_out_maxpktsize))
|
|
(*len)++;
|
|
|
|
/* Send the data block */
|
|
ret = usb_bulk_msg(card->udev, usb_sndbulkpipe(card->udev, ep), pbuf,
|
|
*len, &actual_length, timeout);
|
|
if (ret) {
|
|
dev_err(adapter->dev, "usb_bulk_msg for tx failed: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
*len = actual_length;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int mwifiex_read_data_sync(struct mwifiex_adapter *adapter, u8 *pbuf,
|
|
u32 *len, u8 ep, u32 timeout)
|
|
{
|
|
struct usb_card_rec *card = adapter->card;
|
|
int actual_length, ret;
|
|
|
|
/* Receive the data response */
|
|
ret = usb_bulk_msg(card->udev, usb_rcvbulkpipe(card->udev, ep), pbuf,
|
|
*len, &actual_length, timeout);
|
|
if (ret) {
|
|
dev_err(adapter->dev, "usb_bulk_msg for rx failed: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
*len = actual_length;
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* This function write a command/data packet to card. */
|
|
static int mwifiex_usb_host_to_card(struct mwifiex_adapter *adapter, u8 ep,
|
|
struct sk_buff *skb,
|
|
struct mwifiex_tx_param *tx_param)
|
|
{
|
|
struct usb_card_rec *card = adapter->card;
|
|
struct urb_context *context;
|
|
u8 *data = (u8 *)skb->data;
|
|
struct urb *tx_urb;
|
|
|
|
if (adapter->is_suspended) {
|
|
dev_err(adapter->dev,
|
|
"%s: not allowed while suspended\n", __func__);
|
|
return -1;
|
|
}
|
|
|
|
if (adapter->surprise_removed) {
|
|
dev_err(adapter->dev, "%s: device removed\n", __func__);
|
|
return -1;
|
|
}
|
|
|
|
if (ep == card->tx_data_ep &&
|
|
atomic_read(&card->tx_data_urb_pending) >= MWIFIEX_TX_DATA_URB) {
|
|
return -EBUSY;
|
|
}
|
|
|
|
dev_dbg(adapter->dev, "%s: ep=%d\n", __func__, ep);
|
|
|
|
if (ep == card->tx_cmd_ep) {
|
|
context = &card->tx_cmd;
|
|
} else {
|
|
if (card->tx_data_ix >= MWIFIEX_TX_DATA_URB)
|
|
card->tx_data_ix = 0;
|
|
context = &card->tx_data_list[card->tx_data_ix++];
|
|
}
|
|
|
|
context->adapter = adapter;
|
|
context->ep = ep;
|
|
context->skb = skb;
|
|
tx_urb = context->urb;
|
|
|
|
usb_fill_bulk_urb(tx_urb, card->udev, usb_sndbulkpipe(card->udev, ep),
|
|
data, skb->len, mwifiex_usb_tx_complete,
|
|
(void *)context);
|
|
|
|
tx_urb->transfer_flags |= URB_ZERO_PACKET;
|
|
|
|
if (ep == card->tx_cmd_ep)
|
|
atomic_inc(&card->tx_cmd_urb_pending);
|
|
else
|
|
atomic_inc(&card->tx_data_urb_pending);
|
|
|
|
if (usb_submit_urb(tx_urb, GFP_ATOMIC)) {
|
|
dev_err(adapter->dev, "%s: usb_submit_urb failed\n", __func__);
|
|
if (ep == card->tx_cmd_ep) {
|
|
atomic_dec(&card->tx_cmd_urb_pending);
|
|
} else {
|
|
atomic_dec(&card->tx_data_urb_pending);
|
|
if (card->tx_data_ix)
|
|
card->tx_data_ix--;
|
|
else
|
|
card->tx_data_ix = MWIFIEX_TX_DATA_URB;
|
|
}
|
|
|
|
return -1;
|
|
} else {
|
|
if (ep == card->tx_data_ep &&
|
|
atomic_read(&card->tx_data_urb_pending) ==
|
|
MWIFIEX_TX_DATA_URB)
|
|
return -ENOSR;
|
|
}
|
|
|
|
return -EINPROGRESS;
|
|
}
|
|
|
|
/* This function register usb device and initialize parameter. */
|
|
static int mwifiex_register_dev(struct mwifiex_adapter *adapter)
|
|
{
|
|
struct usb_card_rec *card = (struct usb_card_rec *)adapter->card;
|
|
|
|
card->adapter = adapter;
|
|
adapter->dev = &card->udev->dev;
|
|
|
|
switch (le16_to_cpu(card->udev->descriptor.idProduct)) {
|
|
case USB8897_PID_1:
|
|
case USB8897_PID_2:
|
|
adapter->tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_4K;
|
|
strcpy(adapter->fw_name, USB8897_DEFAULT_FW_NAME);
|
|
break;
|
|
case USB8797_PID_1:
|
|
case USB8797_PID_2:
|
|
default:
|
|
adapter->tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K;
|
|
strcpy(adapter->fw_name, USB8797_DEFAULT_FW_NAME);
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void mwifiex_unregister_dev(struct mwifiex_adapter *adapter)
|
|
{
|
|
struct usb_card_rec *card = (struct usb_card_rec *)adapter->card;
|
|
|
|
card->adapter = NULL;
|
|
}
|
|
|
|
static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter *adapter,
|
|
struct mwifiex_fw_image *fw)
|
|
{
|
|
int ret = 0;
|
|
u8 *firmware = fw->fw_buf, *recv_buff;
|
|
u32 retries = USB8XXX_FW_MAX_RETRY, dlen;
|
|
u32 fw_seqnum = 0, tlen = 0, dnld_cmd = 0;
|
|
struct fw_data *fwdata;
|
|
struct fw_sync_header sync_fw;
|
|
u8 check_winner = 1;
|
|
|
|
if (!firmware) {
|
|
dev_err(adapter->dev,
|
|
"No firmware image found! Terminating download\n");
|
|
ret = -1;
|
|
goto fw_exit;
|
|
}
|
|
|
|
/* Allocate memory for transmit */
|
|
fwdata = kzalloc(FW_DNLD_TX_BUF_SIZE, GFP_KERNEL);
|
|
if (!fwdata)
|
|
goto fw_exit;
|
|
|
|
/* Allocate memory for receive */
|
|
recv_buff = kzalloc(FW_DNLD_RX_BUF_SIZE, GFP_KERNEL);
|
|
if (!recv_buff)
|
|
goto cleanup;
|
|
|
|
do {
|
|
/* Send pseudo data to check winner status first */
|
|
if (check_winner) {
|
|
memset(&fwdata->fw_hdr, 0, sizeof(struct fw_header));
|
|
dlen = 0;
|
|
} else {
|
|
/* copy the header of the fw_data to get the length */
|
|
memcpy(&fwdata->fw_hdr, &firmware[tlen],
|
|
sizeof(struct fw_header));
|
|
|
|
dlen = le32_to_cpu(fwdata->fw_hdr.data_len);
|
|
dnld_cmd = le32_to_cpu(fwdata->fw_hdr.dnld_cmd);
|
|
tlen += sizeof(struct fw_header);
|
|
|
|
memcpy(fwdata->data, &firmware[tlen], dlen);
|
|
|
|
fwdata->seq_num = cpu_to_le32(fw_seqnum);
|
|
tlen += dlen;
|
|
}
|
|
|
|
/* If the send/receive fails or CRC occurs then retry */
|
|
while (retries--) {
|
|
u8 *buf = (u8 *)fwdata;
|
|
u32 len = FW_DATA_XMIT_SIZE;
|
|
|
|
/* send the firmware block */
|
|
ret = mwifiex_write_data_sync(adapter, buf, &len,
|
|
MWIFIEX_USB_EP_CMD_EVENT,
|
|
MWIFIEX_USB_TIMEOUT);
|
|
if (ret) {
|
|
dev_err(adapter->dev,
|
|
"write_data_sync: failed: %d\n", ret);
|
|
continue;
|
|
}
|
|
|
|
buf = recv_buff;
|
|
len = FW_DNLD_RX_BUF_SIZE;
|
|
|
|
/* Receive the firmware block response */
|
|
ret = mwifiex_read_data_sync(adapter, buf, &len,
|
|
MWIFIEX_USB_EP_CMD_EVENT,
|
|
MWIFIEX_USB_TIMEOUT);
|
|
if (ret) {
|
|
dev_err(adapter->dev,
|
|
"read_data_sync: failed: %d\n", ret);
|
|
continue;
|
|
}
|
|
|
|
memcpy(&sync_fw, recv_buff,
|
|
sizeof(struct fw_sync_header));
|
|
|
|
/* check 1st firmware block resp for highest bit set */
|
|
if (check_winner) {
|
|
if (le32_to_cpu(sync_fw.cmd) & 0x80000000) {
|
|
dev_warn(adapter->dev,
|
|
"USB is not the winner %#x\n",
|
|
sync_fw.cmd);
|
|
|
|
/* returning success */
|
|
ret = 0;
|
|
goto cleanup;
|
|
}
|
|
|
|
dev_dbg(adapter->dev,
|
|
"USB is the winner, start to download FW\n");
|
|
|
|
check_winner = 0;
|
|
break;
|
|
}
|
|
|
|
/* check the firmware block response for CRC errors */
|
|
if (sync_fw.cmd) {
|
|
dev_err(adapter->dev,
|
|
"FW received block with CRC %#x\n",
|
|
sync_fw.cmd);
|
|
ret = -1;
|
|
continue;
|
|
}
|
|
|
|
retries = USB8XXX_FW_MAX_RETRY;
|
|
break;
|
|
}
|
|
fw_seqnum++;
|
|
} while ((dnld_cmd != FW_HAS_LAST_BLOCK) && retries);
|
|
|
|
cleanup:
|
|
dev_dbg(adapter->dev, "%s: %d bytes downloaded\n", __func__, tlen);
|
|
|
|
kfree(recv_buff);
|
|
kfree(fwdata);
|
|
|
|
if (retries)
|
|
ret = 0;
|
|
fw_exit:
|
|
return ret;
|
|
}
|
|
|
|
static int mwifiex_usb_dnld_fw(struct mwifiex_adapter *adapter,
|
|
struct mwifiex_fw_image *fw)
|
|
{
|
|
int ret;
|
|
struct usb_card_rec *card = (struct usb_card_rec *)adapter->card;
|
|
|
|
if (card->usb_boot_state == USB8XXX_FW_DNLD) {
|
|
ret = mwifiex_prog_fw_w_helper(adapter, fw);
|
|
if (ret)
|
|
return -1;
|
|
|
|
/* Boot state changes after successful firmware download */
|
|
if (card->usb_boot_state == USB8XXX_FW_DNLD)
|
|
return -1;
|
|
}
|
|
|
|
ret = mwifiex_usb_rx_init(adapter);
|
|
if (!ret)
|
|
ret = mwifiex_usb_tx_init(adapter);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void mwifiex_submit_rx_urb(struct mwifiex_adapter *adapter, u8 ep)
|
|
{
|
|
struct usb_card_rec *card = (struct usb_card_rec *)adapter->card;
|
|
|
|
skb_push(card->rx_cmd.skb, INTF_HEADER_LEN);
|
|
if ((ep == card->rx_cmd_ep) &&
|
|
(!atomic_read(&card->rx_cmd_urb_pending)))
|
|
mwifiex_usb_submit_rx_urb(&card->rx_cmd,
|
|
MWIFIEX_RX_CMD_BUF_SIZE);
|
|
|
|
return;
|
|
}
|
|
|
|
static int mwifiex_usb_cmd_event_complete(struct mwifiex_adapter *adapter,
|
|
struct sk_buff *skb)
|
|
{
|
|
atomic_dec(&adapter->rx_pending);
|
|
mwifiex_submit_rx_urb(adapter, MWIFIEX_USB_EP_CMD_EVENT);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mwifiex_usb_data_complete(struct mwifiex_adapter *adapter)
|
|
{
|
|
atomic_dec(&adapter->rx_pending);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* This function wakes up the card. */
|
|
static int mwifiex_pm_wakeup_card(struct mwifiex_adapter *adapter)
|
|
{
|
|
/* Simulation of HS_AWAKE event */
|
|
adapter->pm_wakeup_fw_try = false;
|
|
adapter->pm_wakeup_card_req = false;
|
|
adapter->ps_state = PS_STATE_AWAKE;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct mwifiex_if_ops usb_ops = {
|
|
.register_dev = mwifiex_register_dev,
|
|
.unregister_dev = mwifiex_unregister_dev,
|
|
.wakeup = mwifiex_pm_wakeup_card,
|
|
.wakeup_complete = mwifiex_pm_wakeup_card_complete,
|
|
|
|
/* USB specific */
|
|
.dnld_fw = mwifiex_usb_dnld_fw,
|
|
.cmdrsp_complete = mwifiex_usb_cmd_event_complete,
|
|
.event_complete = mwifiex_usb_cmd_event_complete,
|
|
.data_complete = mwifiex_usb_data_complete,
|
|
.host_to_card = mwifiex_usb_host_to_card,
|
|
};
|
|
|
|
/* This function initializes the USB driver module.
|
|
*
|
|
* This initiates the semaphore and registers the device with
|
|
* USB bus.
|
|
*/
|
|
static int mwifiex_usb_init_module(void)
|
|
{
|
|
int ret;
|
|
|
|
pr_debug("Marvell USB8797 Driver\n");
|
|
|
|
sema_init(&add_remove_card_sem, 1);
|
|
|
|
ret = usb_register(&mwifiex_usb_driver);
|
|
if (ret)
|
|
pr_err("Driver register failed!\n");
|
|
else
|
|
pr_debug("info: Driver registered successfully!\n");
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* This function cleans up the USB driver.
|
|
*
|
|
* The following major steps are followed in .disconnect for cleanup:
|
|
* - Resume the device if its suspended
|
|
* - Disconnect the device if connected
|
|
* - Shutdown the firmware
|
|
* - Unregister the device from USB bus.
|
|
*/
|
|
static void mwifiex_usb_cleanup_module(void)
|
|
{
|
|
if (!down_interruptible(&add_remove_card_sem))
|
|
up(&add_remove_card_sem);
|
|
|
|
/* set the flag as user is removing this module */
|
|
user_rmmod = 1;
|
|
|
|
usb_deregister(&mwifiex_usb_driver);
|
|
}
|
|
|
|
module_init(mwifiex_usb_init_module);
|
|
module_exit(mwifiex_usb_cleanup_module);
|
|
|
|
MODULE_AUTHOR("Marvell International Ltd.");
|
|
MODULE_DESCRIPTION("Marvell WiFi-Ex USB Driver version" USB_VERSION);
|
|
MODULE_VERSION(USB_VERSION);
|
|
MODULE_LICENSE("GPL v2");
|
|
MODULE_FIRMWARE(USB8797_DEFAULT_FW_NAME);
|
|
MODULE_FIRMWARE(USB8897_DEFAULT_FW_NAME);
|