diff options
Diffstat (limited to 'drivers/net/wireless/marvell/mwifiex/usb.c')
| -rw-r--r-- | drivers/net/wireless/marvell/mwifiex/usb.c | 1618 |
1 files changed, 1618 insertions, 0 deletions
diff --git a/drivers/net/wireless/marvell/mwifiex/usb.c b/drivers/net/wireless/marvell/mwifiex/usb.c new file mode 100644 index 000000000..d3ab9572e --- /dev/null +++ b/drivers/net/wireless/marvell/mwifiex/usb.c @@ -0,0 +1,1618 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * NXP Wireless LAN device driver: USB specific handling + * + * Copyright 2011-2020 NXP + */ + +#include "main.h" +#include "usb.h" + +#define USB_VERSION "1.0" + +static struct mwifiex_if_ops usb_ops; + +static const struct usb_device_id mwifiex_usb_table[] = { + /* 8766 */ + {USB_DEVICE(USB8XXX_VID, USB8766_PID_1)}, + {USB_DEVICE_AND_INTERFACE_INFO(USB8XXX_VID, USB8766_PID_2, + USB_CLASS_VENDOR_SPEC, + USB_SUBCLASS_VENDOR_SPEC, 0xff)}, + /* 8797 */ + {USB_DEVICE(USB8XXX_VID, USB8797_PID_1)}, + {USB_DEVICE_AND_INTERFACE_INFO(USB8XXX_VID, USB8797_PID_2, + USB_CLASS_VENDOR_SPEC, + USB_SUBCLASS_VENDOR_SPEC, 0xff)}, + /* 8801 */ + {USB_DEVICE(USB8XXX_VID, USB8801_PID_1)}, + {USB_DEVICE_AND_INTERFACE_INFO(USB8XXX_VID, USB8801_PID_2, + USB_CLASS_VENDOR_SPEC, + USB_SUBCLASS_VENDOR_SPEC, 0xff)}, + /* 8997 */ + {USB_DEVICE(USB8XXX_VID, USB8997_PID_1)}, + {USB_DEVICE_AND_INTERFACE_INFO(USB8XXX_VID, USB8997_PID_2, + USB_CLASS_VENDOR_SPEC, + USB_SUBCLASS_VENDOR_SPEC, 0xff)}, + { } /* Terminating entry */ +}; + +MODULE_DEVICE_TABLE(usb, mwifiex_usb_table); + +static int mwifiex_usb_submit_rx_urb(struct urb_context *ctx, int size); + +/* This function handles received packet. Necessary action is taken based on + * cmd/event/data. + */ +static int mwifiex_usb_recv(struct mwifiex_adapter *adapter, + struct sk_buff *skb, u8 ep) +{ + u32 recv_type; + __le32 tmp; + int ret; + + if (adapter->hs_activated) + mwifiex_process_hs_config(adapter); + + if (skb->len < INTF_HEADER_LEN) { + mwifiex_dbg(adapter, ERROR, + "%s: invalid skb->len\n", __func__); + return -1; + } + + switch (ep) { + case MWIFIEX_USB_EP_CMD_EVENT: + mwifiex_dbg(adapter, EVENT, + "%s: EP_CMD_EVENT\n", __func__); + skb_copy_from_linear_data(skb, &tmp, INTF_HEADER_LEN); + recv_type = le32_to_cpu(tmp); + skb_pull(skb, INTF_HEADER_LEN); + + switch (recv_type) { + case MWIFIEX_USB_TYPE_CMD: + if (skb->len > MWIFIEX_SIZE_OF_CMD_BUFFER) { + mwifiex_dbg(adapter, ERROR, + "CMD: skb->len too large\n"); + ret = -1; + goto exit_restore_skb; + } else if (!adapter->curr_cmd) { + mwifiex_dbg(adapter, WARN, "CMD: no curr_cmd\n"); + if (adapter->ps_state == PS_STATE_SLEEP_CFM) { + mwifiex_process_sleep_confirm_resp( + adapter, skb->data, + skb->len); + ret = 0; + goto exit_restore_skb; + } + ret = -1; + goto exit_restore_skb; + } + + adapter->curr_cmd->resp_skb = skb; + adapter->cmd_resp_received = true; + break; + case MWIFIEX_USB_TYPE_EVENT: + if (skb->len < sizeof(u32)) { + mwifiex_dbg(adapter, ERROR, + "EVENT: skb->len too small\n"); + ret = -1; + goto exit_restore_skb; + } + skb_copy_from_linear_data(skb, &tmp, sizeof(u32)); + adapter->event_cause = le32_to_cpu(tmp); + mwifiex_dbg(adapter, EVENT, + "event_cause %#x\n", adapter->event_cause); + + if (skb->len > MAX_EVENT_SIZE) { + mwifiex_dbg(adapter, ERROR, + "EVENT: event body too large\n"); + ret = -1; + goto exit_restore_skb; + } + + memcpy(adapter->event_body, skb->data + + MWIFIEX_EVENT_HEADER_LEN, skb->len); + + adapter->event_received = true; + adapter->event_skb = skb; + break; + default: + mwifiex_dbg(adapter, ERROR, + "unknown recv_type %#x\n", recv_type); + ret = -1; + goto exit_restore_skb; + } + break; + case MWIFIEX_USB_EP_DATA: + mwifiex_dbg(adapter, DATA, "%s: EP_DATA\n", __func__); + if (skb->len > MWIFIEX_RX_DATA_BUF_SIZE) { + mwifiex_dbg(adapter, ERROR, + "DATA: skb->len too large\n"); + return -1; + } + + skb_queue_tail(&adapter->rx_data_q, skb); + adapter->data_received = true; + atomic_inc(&adapter->rx_pending); + break; + default: + mwifiex_dbg(adapter, ERROR, + "%s: unknown endport %#x\n", __func__, ep); + return -1; + } + + return -EINPROGRESS; + +exit_restore_skb: + /* The buffer will be reused for further cmds/events */ + skb_push(skb, INTF_HEADER_LEN); + + return ret; +} + +static void mwifiex_usb_rx_complete(struct urb *urb) +{ + struct urb_context *context = (struct urb_context *)urb->context; + struct mwifiex_adapter *adapter = context->adapter; + struct sk_buff *skb = context->skb; + struct usb_card_rec *card; + int recv_length = urb->actual_length; + int size, status; + + if (!adapter || !adapter->card) { + pr_err("mwifiex adapter or card structure is not valid\n"); + return; + } + + card = (struct usb_card_rec *)adapter->card; + if (card->rx_cmd_ep == context->ep) + atomic_dec(&card->rx_cmd_urb_pending); + else + atomic_dec(&card->rx_data_urb_pending); + + if (recv_length) { + if (urb->status || + test_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags)) { + mwifiex_dbg(adapter, ERROR, + "URB status is failed: %d\n", urb->status); + /* Do not free skb in case of command ep */ + if (card->rx_cmd_ep != context->ep) + dev_kfree_skb_any(skb); + goto setup_for_next; + } + if (skb->len > recv_length) + skb_trim(skb, recv_length); + else + skb_put(skb, recv_length - skb->len); + + status = mwifiex_usb_recv(adapter, skb, context->ep); + + mwifiex_dbg(adapter, INFO, + "info: recv_length=%d, status=%d\n", + recv_length, status); + if (status == -EINPROGRESS) { + mwifiex_queue_main_work(adapter); + + /* urb for data_ep is re-submitted now; + * urb for cmd_ep will be re-submitted in callback + * mwifiex_usb_recv_complete + */ + if (card->rx_cmd_ep == context->ep) + return; + } else { + if (status == -1) + mwifiex_dbg(adapter, ERROR, + "received data processing failed!\n"); + + /* Do not free skb in case of command ep */ + if (card->rx_cmd_ep != context->ep) + dev_kfree_skb_any(skb); + } + } else if (urb->status) { + if (!test_bit(MWIFIEX_IS_SUSPENDED, &adapter->work_flags)) { + mwifiex_dbg(adapter, FATAL, + "Card is removed: %d\n", urb->status); + set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags); + } + dev_kfree_skb_any(skb); + return; + } else { + /* Do not free skb in case of command ep */ + if (card->rx_cmd_ep != context->ep) + dev_kfree_skb_any(skb); + + /* fall through setup_for_next */ + } + +setup_for_next: + if (card->rx_cmd_ep == context->ep) + size = MWIFIEX_RX_CMD_BUF_SIZE; + else + size = MWIFIEX_RX_DATA_BUF_SIZE; + + if (card->rx_cmd_ep == context->ep) { + mwifiex_usb_submit_rx_urb(context, size); + } else { + if (atomic_read(&adapter->rx_pending) <= HIGH_RX_PENDING) { + mwifiex_usb_submit_rx_urb(context, size); + } else { + context->skb = NULL; + } + } + + return; +} + +static void mwifiex_usb_tx_complete(struct urb *urb) +{ + struct urb_context *context = (struct urb_context *)(urb->context); + struct mwifiex_adapter *adapter = context->adapter; + struct usb_card_rec *card = adapter->card; + struct usb_tx_data_port *port; + int i; + + mwifiex_dbg(adapter, INFO, + "%s: status: %d\n", __func__, urb->status); + + if (context->ep == card->tx_cmd_ep) { + mwifiex_dbg(adapter, CMD, + "%s: CMD\n", __func__); + atomic_dec(&card->tx_cmd_urb_pending); + adapter->cmd_sent = false; + } else { + mwifiex_dbg(adapter, DATA, + "%s: DATA\n", __func__); + mwifiex_write_data_complete(adapter, context->skb, 0, + urb->status ? -1 : 0); + for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) { + port = &card->port[i]; + if (context->ep == port->tx_data_ep) { + atomic_dec(&port->tx_data_urb_pending); + port->block_status = false; + break; + } + } + adapter->data_sent = false; + } + + if (card->mc_resync_flag) + mwifiex_multi_chan_resync(adapter); + + mwifiex_queue_main_work(adapter); + + return; +} + +static int mwifiex_usb_submit_rx_urb(struct urb_context *ctx, int size) +{ + struct mwifiex_adapter *adapter = ctx->adapter; + struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; + + if (test_bit(MWIFIEX_IS_SUSPENDED, &adapter->work_flags)) { + if (card->rx_cmd_ep == ctx->ep) { + mwifiex_dbg(adapter, INFO, "%s: free rx_cmd skb\n", + __func__); + dev_kfree_skb_any(ctx->skb); + ctx->skb = NULL; + } + mwifiex_dbg(adapter, ERROR, + "%s: card removed/suspended, EP %d rx_cmd URB submit skipped\n", + __func__, ctx->ep); + return -1; + } + + if (card->rx_cmd_ep != ctx->ep) { + ctx->skb = dev_alloc_skb(size); + if (!ctx->skb) { + mwifiex_dbg(adapter, ERROR, + "%s: dev_alloc_skb failed\n", __func__); + return -ENOMEM; + } + } + + if (card->rx_cmd_ep == ctx->ep && + card->rx_cmd_ep_type == USB_ENDPOINT_XFER_INT) + usb_fill_int_urb(ctx->urb, card->udev, + usb_rcvintpipe(card->udev, ctx->ep), + ctx->skb->data, size, mwifiex_usb_rx_complete, + (void *)ctx, card->rx_cmd_interval); + else + usb_fill_bulk_urb(ctx->urb, card->udev, + usb_rcvbulkpipe(card->udev, ctx->ep), + ctx->skb->data, size, mwifiex_usb_rx_complete, + (void *)ctx); + + if (card->rx_cmd_ep == ctx->ep) + atomic_inc(&card->rx_cmd_urb_pending); + else + atomic_inc(&card->rx_data_urb_pending); + + if (usb_submit_urb(ctx->urb, GFP_ATOMIC)) { + mwifiex_dbg(adapter, ERROR, "usb_submit_urb failed\n"); + dev_kfree_skb_any(ctx->skb); + ctx->skb = NULL; + + if (card->rx_cmd_ep == ctx->ep) + atomic_dec(&card->rx_cmd_urb_pending); + else + atomic_dec(&card->rx_data_urb_pending); + + return -1; + } + + return 0; +} + +static void mwifiex_usb_free(struct usb_card_rec *card) +{ + struct usb_tx_data_port *port; + int i, j; + + if (atomic_read(&card->rx_cmd_urb_pending) && card->rx_cmd.urb) + usb_kill_urb(card->rx_cmd.urb); + + usb_free_urb(card->rx_cmd.urb); + card->rx_cmd.urb = NULL; + + 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_RX_DATA_URB; i++) { + usb_free_urb(card->rx_data_list[i].urb); + card->rx_data_list[i].urb = NULL; + } + + for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) { + port = &card->port[i]; + for (j = 0; j < MWIFIEX_TX_DATA_URB; j++) { + usb_kill_urb(port->tx_data_list[j].urb); + usb_free_urb(port->tx_data_list[j].urb); + port->tx_data_list[j].urb = NULL; + } + } + + usb_free_urb(card->tx_cmd.urb); + card->tx_cmd.urb = NULL; + + return; +} + +/* This function probes an mwifiex device and registers it. It allocates + * the card structure, initiates the device registration and initialization + * procedure by adding a logical interface. + */ +static int mwifiex_usb_probe(struct usb_interface *intf, + const struct usb_device_id *id) +{ + struct usb_device *udev = interface_to_usbdev(intf); + struct usb_host_interface *iface_desc = intf->cur_altsetting; + struct usb_endpoint_descriptor *epd; + int ret, i; + struct usb_card_rec *card; + u16 id_vendor, id_product, bcd_device; + + card = devm_kzalloc(&intf->dev, sizeof(*card), GFP_KERNEL); + if (!card) + return -ENOMEM; + + init_completion(&card->fw_done); + + id_vendor = le16_to_cpu(udev->descriptor.idVendor); + id_product = le16_to_cpu(udev->descriptor.idProduct); + bcd_device = le16_to_cpu(udev->descriptor.bcdDevice); + pr_debug("info: VID/PID = %X/%X, Boot2 version = %X\n", + id_vendor, id_product, bcd_device); + + /* PID_1 is used for firmware downloading only */ + switch (id_product) { + case USB8766_PID_1: + case USB8797_PID_1: + case USB8801_PID_1: + case USB8997_PID_1: + card->usb_boot_state = USB8XXX_FW_DNLD; + break; + case USB8766_PID_2: + case USB8797_PID_2: + case USB8801_PID_2: + case USB8997_PID_2: + card->usb_boot_state = USB8XXX_FW_READY; + break; + default: + pr_warn("unknown id_product %#x\n", id_product); + card->usb_boot_state = USB8XXX_FW_DNLD; + break; + } + + card->udev = udev; + card->intf = intf; + + pr_debug("info: bcdUSB=%#x Device Class=%#x SubClass=%#x Protocol=%#x\n", + le16_to_cpu(udev->descriptor.bcdUSB), + udev->descriptor.bDeviceClass, + udev->descriptor.bDeviceSubClass, + udev->descriptor.bDeviceProtocol); + + for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { + epd = &iface_desc->endpoint[i].desc; + if (usb_endpoint_dir_in(epd) && + usb_endpoint_num(epd) == MWIFIEX_USB_EP_CMD_EVENT && + (usb_endpoint_xfer_bulk(epd) || + usb_endpoint_xfer_int(epd))) { + card->rx_cmd_ep_type = usb_endpoint_type(epd); + card->rx_cmd_interval = epd->bInterval; + pr_debug("info: Rx CMD/EVT:: max pkt size: %d, addr: %d, ep_type: %d\n", + le16_to_cpu(epd->wMaxPacketSize), + epd->bEndpointAddress, card->rx_cmd_ep_type); + card->rx_cmd_ep = usb_endpoint_num(epd); + atomic_set(&card->rx_cmd_urb_pending, 0); + } + if (usb_endpoint_dir_in(epd) && + usb_endpoint_num(epd) == MWIFIEX_USB_EP_DATA && + usb_endpoint_xfer_bulk(epd)) { + pr_debug("info: bulk IN: max pkt size: %d, addr: %d\n", + le16_to_cpu(epd->wMaxPacketSize), + epd->bEndpointAddress); + card->rx_data_ep = usb_endpoint_num(epd); + atomic_set(&card->rx_data_urb_pending, 0); + } + if (usb_endpoint_dir_out(epd) && + usb_endpoint_num(epd) == MWIFIEX_USB_EP_DATA && + 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->port[0].tx_data_ep = usb_endpoint_num(epd); + atomic_set(&card->port[0].tx_data_urb_pending, 0); + } + if (usb_endpoint_dir_out(epd) && + usb_endpoint_num(epd) == MWIFIEX_USB_EP_DATA_CH2 && + usb_endpoint_xfer_bulk(epd)) { + pr_debug("info: bulk OUT chan2:\t" + "max pkt size: %d, addr: %d\n", + le16_to_cpu(epd->wMaxPacketSize), + epd->bEndpointAddress); + card->port[1].tx_data_ep = usb_endpoint_num(epd); + atomic_set(&card->port[1].tx_data_urb_pending, 0); + } + if (usb_endpoint_dir_out(epd) && + usb_endpoint_num(epd) == MWIFIEX_USB_EP_CMD_EVENT && + (usb_endpoint_xfer_bulk(epd) || + usb_endpoint_xfer_int(epd))) { + card->tx_cmd_ep_type = usb_endpoint_type(epd); + card->tx_cmd_interval = epd->bInterval; + pr_debug("info: bulk OUT: max pkt size: %d, addr: %d\n", + le16_to_cpu(epd->wMaxPacketSize), + epd->bEndpointAddress); + pr_debug("info: Tx CMD:: max pkt size: %d, addr: %d, ep_type: %d\n", + le16_to_cpu(epd->wMaxPacketSize), + epd->bEndpointAddress, card->tx_cmd_ep_type); + card->tx_cmd_ep = usb_endpoint_num(epd); + atomic_set(&card->tx_cmd_urb_pending, 0); + card->bulk_out_maxpktsize = + le16_to_cpu(epd->wMaxPacketSize); + } + } + + switch (card->usb_boot_state) { + case USB8XXX_FW_DNLD: + /* Reject broken descriptors. */ + if (!card->rx_cmd_ep || !card->tx_cmd_ep) + return -ENODEV; + if (card->bulk_out_maxpktsize == 0) + return -ENODEV; + break; + case USB8XXX_FW_READY: + /* Assume the driver can handle missing endpoints for now. */ + break; + default: + WARN_ON(1); + return -ENODEV; + } + + usb_set_intfdata(intf, card); + + ret = mwifiex_add_card(card, &card->fw_done, &usb_ops, + MWIFIEX_USB, &card->udev->dev); + if (ret) { + pr_err("%s: mwifiex_add_card failed: %d\n", __func__, ret); + usb_reset_device(udev); + 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; + struct usb_tx_data_port *port; + int i, j; + + /* Might still be loading firmware */ + wait_for_completion(&card->fw_done); + + adapter = card->adapter; + if (!adapter) { + dev_err(&intf->dev, "card is not valid\n"); + return 0; + } + + if (unlikely(test_bit(MWIFIEX_IS_SUSPENDED, &adapter->work_flags))) + mwifiex_dbg(adapter, WARN, + "Device already suspended\n"); + + /* Enable the Host Sleep */ + if (!mwifiex_enable_hs(adapter)) { + mwifiex_dbg(adapter, ERROR, + "cmd: failed to suspend\n"); + clear_bit(MWIFIEX_IS_HS_ENABLING, &adapter->work_flags); + return -EFAULT; + } + + + /* 'MWIFIEX_IS_SUSPENDED' bit 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. + */ + set_bit(MWIFIEX_IS_SUSPENDED, &adapter->work_flags); + clear_bit(MWIFIEX_IS_HS_ENABLING, &adapter->work_flags); + + 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_PORT; i++) { + port = &card->port[i]; + for (j = 0; j < MWIFIEX_TX_DATA_URB; j++) { + if (port->tx_data_list[j].urb) + usb_kill_urb(port->tx_data_list[j].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->adapter) { + dev_err(&intf->dev, "%s: card->adapter is NULL\n", + __func__); + return 0; + } + adapter = card->adapter; + + if (unlikely(!test_bit(MWIFIEX_IS_SUSPENDED, &adapter->work_flags))) { + mwifiex_dbg(adapter, WARN, + "Device already resumed\n"); + return 0; + } + + /* Indicate device resumed. The netdev queue will be resumed only + * after the urbs have been re-submitted + */ + clear_bit(MWIFIEX_IS_SUSPENDED, &adapter->work_flags); + + 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; + + wait_for_completion(&card->fw_done); + + adapter = card->adapter; + if (!adapter || !adapter->priv_num) + return; + + if (card->udev->state != USB_STATE_NOTATTACHED && !adapter->mfg_mode) { + mwifiex_deauthenticate_all(adapter); + + mwifiex_init_shutdown_fw(mwifiex_get_priv(adapter, + MWIFIEX_BSS_ROLE_ANY), + MWIFIEX_FUNC_SHUTDOWN); + } + + mwifiex_dbg(adapter, FATAL, + "%s: removing card\n", __func__); + mwifiex_remove_card(adapter); + + usb_put_dev(interface_to_usbdev(intf)); +} + +static void mwifiex_usb_coredump(struct device *dev) +{ + struct usb_interface *intf = to_usb_interface(dev); + struct usb_card_rec *card = usb_get_intfdata(intf); + + mwifiex_fw_dump_event(mwifiex_get_priv(card->adapter, + MWIFIEX_BSS_ROLE_ANY)); +} + +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, + .drvwrap.driver = { + .coredump = mwifiex_usb_coredump, + }, +}; + +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) { + mwifiex_dbg(adapter, ERROR, + "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) { + mwifiex_dbg(adapter, ERROR, + "usb_bulk_msg for rx failed: %d\n", ret); + return ret; + } + + *len = actual_length; + + return ret; +} + +static void mwifiex_usb_port_resync(struct mwifiex_adapter *adapter) +{ + struct usb_card_rec *card = adapter->card; + u8 active_port = MWIFIEX_USB_EP_DATA; + struct mwifiex_private *priv = NULL; + int i; + + if (adapter->usb_mc_status) { + for (i = 0; i < adapter->priv_num; i++) { + priv = adapter->priv[i]; + if (!priv) + continue; + if ((priv->bss_role == MWIFIEX_BSS_ROLE_UAP && + !priv->bss_started) || + (priv->bss_role == MWIFIEX_BSS_ROLE_STA && + !priv->media_connected)) + priv->usb_port = MWIFIEX_USB_EP_DATA; + } + for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) + card->port[i].block_status = false; + } else { + for (i = 0; i < adapter->priv_num; i++) { + priv = adapter->priv[i]; + if (!priv) + continue; + if ((priv->bss_role == MWIFIEX_BSS_ROLE_UAP && + priv->bss_started) || + (priv->bss_role == MWIFIEX_BSS_ROLE_STA && + priv->media_connected)) { + active_port = priv->usb_port; + break; + } + } + for (i = 0; i < adapter->priv_num; i++) { + priv = adapter->priv[i]; + if (priv) + priv->usb_port = active_port; + } + for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) { + if (active_port == card->port[i].tx_data_ep) + card->port[i].block_status = false; + else + card->port[i].block_status = true; + } + } +} + +static bool mwifiex_usb_is_port_ready(struct mwifiex_private *priv) +{ + struct usb_card_rec *card = priv->adapter->card; + int idx; + + for (idx = 0; idx < MWIFIEX_TX_DATA_PORT; idx++) { + if (priv->usb_port == card->port[idx].tx_data_ep) + return !card->port[idx].block_status; + } + + return false; +} + +static inline u8 mwifiex_usb_data_sent(struct mwifiex_adapter *adapter) +{ + struct usb_card_rec *card = adapter->card; + int i; + + for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) + if (!card->port[i].block_status) + return false; + + return true; +} + +static int mwifiex_usb_construct_send_urb(struct mwifiex_adapter *adapter, + struct usb_tx_data_port *port, u8 ep, + struct urb_context *context, + struct sk_buff *skb_send) +{ + struct usb_card_rec *card = adapter->card; + int ret = -EINPROGRESS; + struct urb *tx_urb; + + context->adapter = adapter; + context->ep = ep; + context->skb = skb_send; + tx_urb = context->urb; + + if (ep == card->tx_cmd_ep && + card->tx_cmd_ep_type == USB_ENDPOINT_XFER_INT) + usb_fill_int_urb(tx_urb, card->udev, + usb_sndintpipe(card->udev, ep), skb_send->data, + skb_send->len, mwifiex_usb_tx_complete, + (void *)context, card->tx_cmd_interval); + else + usb_fill_bulk_urb(tx_urb, card->udev, + usb_sndbulkpipe(card->udev, ep), + skb_send->data, skb_send->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(&port->tx_data_urb_pending); + + if (ep != card->tx_cmd_ep && + atomic_read(&port->tx_data_urb_pending) == + MWIFIEX_TX_DATA_URB) { + port->block_status = true; + adapter->data_sent = mwifiex_usb_data_sent(adapter); + ret = -ENOSR; + } + + if (usb_submit_urb(tx_urb, GFP_ATOMIC)) { + mwifiex_dbg(adapter, ERROR, + "%s: usb_submit_urb failed\n", __func__); + if (ep == card->tx_cmd_ep) { + atomic_dec(&card->tx_cmd_urb_pending); + } else { + atomic_dec(&port->tx_data_urb_pending); + port->block_status = false; + adapter->data_sent = false; + if (port->tx_data_ix) + port->tx_data_ix--; + else + port->tx_data_ix = MWIFIEX_TX_DATA_URB; + } + ret = -1; + } + + return ret; +} + +static int mwifiex_usb_prepare_tx_aggr_skb(struct mwifiex_adapter *adapter, + struct usb_tx_data_port *port, + struct sk_buff **skb_send) +{ + struct sk_buff *skb_aggr, *skb_tmp; + u8 *payload, pad; + u16 align = adapter->bus_aggr.tx_aggr_align; + struct mwifiex_txinfo *tx_info = NULL; + bool is_txinfo_set = false; + + /* Packets in aggr_list will be send in either skb_aggr or + * write complete, delete the tx_aggr timer + */ + if (port->tx_aggr.timer_cnxt.is_hold_timer_set) { + del_timer(&port->tx_aggr.timer_cnxt.hold_timer); + port->tx_aggr.timer_cnxt.is_hold_timer_set = false; + port->tx_aggr.timer_cnxt.hold_tmo_msecs = 0; + } + + skb_aggr = mwifiex_alloc_dma_align_buf(port->tx_aggr.aggr_len, + GFP_ATOMIC); + if (!skb_aggr) { + mwifiex_dbg(adapter, ERROR, + "%s: alloc skb_aggr failed\n", __func__); + + while ((skb_tmp = skb_dequeue(&port->tx_aggr.aggr_list))) + mwifiex_write_data_complete(adapter, skb_tmp, 0, -1); + + port->tx_aggr.aggr_num = 0; + port->tx_aggr.aggr_len = 0; + return -EBUSY; + } + + tx_info = MWIFIEX_SKB_TXCB(skb_aggr); + memset(tx_info, 0, sizeof(*tx_info)); + + while ((skb_tmp = skb_dequeue(&port->tx_aggr.aggr_list))) { + /* padding for aligning next packet header*/ + pad = (align - (skb_tmp->len & (align - 1))) % align; + payload = skb_put(skb_aggr, skb_tmp->len + pad); + memcpy(payload, skb_tmp->data, skb_tmp->len); + if (skb_queue_empty(&port->tx_aggr.aggr_list)) { + /* do not padding for last packet*/ + *(__le16 *)payload = cpu_to_le16(skb_tmp->len); + *(__le16 *)&payload[2] = + cpu_to_le16(MWIFIEX_TYPE_AGGR_DATA_V2 | 0x80); + skb_trim(skb_aggr, skb_aggr->len - pad); + } else { + /* add aggregation interface header */ + *(__le16 *)payload = cpu_to_le16(skb_tmp->len + pad); + *(__le16 *)&payload[2] = + cpu_to_le16(MWIFIEX_TYPE_AGGR_DATA_V2); + } + + if (!is_txinfo_set) { + tx_info->bss_num = MWIFIEX_SKB_TXCB(skb_tmp)->bss_num; + tx_info->bss_type = MWIFIEX_SKB_TXCB(skb_tmp)->bss_type; + is_txinfo_set = true; + } + + port->tx_aggr.aggr_num--; + port->tx_aggr.aggr_len -= (skb_tmp->len + pad); + mwifiex_write_data_complete(adapter, skb_tmp, 0, 0); + } + + tx_info->pkt_len = skb_aggr->len - + (sizeof(struct txpd) + adapter->intf_hdr_len); + tx_info->flags |= MWIFIEX_BUF_FLAG_AGGR_PKT; + + port->tx_aggr.aggr_num = 0; + port->tx_aggr.aggr_len = 0; + *skb_send = skb_aggr; + + return 0; +} + +/* This function prepare data packet to be send under usb tx aggregation + * protocol, check current usb aggregation status, link packet to aggrgation + * list if possible, work flow as below: + * (1) if only 1 packet available, add usb tx aggregation header and send. + * (2) if packet is able to aggregated, link it to current aggregation list. + * (3) if packet is not able to aggregated, aggregate and send exist packets + * in aggrgation list. Then, link packet in the list if there is more + * packet in transmit queue, otherwise try to transmit single packet. + */ +static int mwifiex_usb_aggr_tx_data(struct mwifiex_adapter *adapter, u8 ep, + struct sk_buff *skb, + struct mwifiex_tx_param *tx_param, + struct usb_tx_data_port *port) +{ + u8 *payload, pad; + u16 align = adapter->bus_aggr.tx_aggr_align; + struct sk_buff *skb_send = NULL; + struct urb_context *context = NULL; + struct txpd *local_tx_pd = + (struct txpd *)((u8 *)skb->data + adapter->intf_hdr_len); + u8 f_send_aggr_buf = 0; + u8 f_send_cur_buf = 0; + u8 f_precopy_cur_buf = 0; + u8 f_postcopy_cur_buf = 0; + u32 timeout; + int ret; + + /* padding to ensure each packet alginment */ + pad = (align - (skb->len & (align - 1))) % align; + + if (tx_param && tx_param->next_pkt_len) { + /* next packet available in tx queue*/ + if (port->tx_aggr.aggr_len + skb->len + pad > + adapter->bus_aggr.tx_aggr_max_size) { + f_send_aggr_buf = 1; + f_postcopy_cur_buf = 1; + } else { + /* current packet could be aggregated*/ + f_precopy_cur_buf = 1; + + if (port->tx_aggr.aggr_len + skb->len + pad + + tx_param->next_pkt_len > + adapter->bus_aggr.tx_aggr_max_size || + port->tx_aggr.aggr_num + 2 > + adapter->bus_aggr.tx_aggr_max_num) { + /* next packet could not be aggregated + * send current aggregation buffer + */ + f_send_aggr_buf = 1; + } + } + } else { + /* last packet in tx queue */ + if (port->tx_aggr.aggr_num > 0) { + /* pending packets in aggregation buffer*/ + if (port->tx_aggr.aggr_len + skb->len + pad > + adapter->bus_aggr.tx_aggr_max_size) { + /* current packet not be able to aggregated, + * send aggr buffer first, then send packet. + */ + f_send_cur_buf = 1; + } else { + /* last packet, Aggregation and send */ + f_precopy_cur_buf = 1; + } + + f_send_aggr_buf = 1; + } else { + /* no pending packets in aggregation buffer, + * send current packet immediately + */ + f_send_cur_buf = 1; + } + } + + if (local_tx_pd->flags & MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET) { + /* Send NULL packet immediately*/ + if (f_precopy_cur_buf) { + if (skb_queue_empty(&port->tx_aggr.aggr_list)) { + f_precopy_cur_buf = 0; + f_send_aggr_buf = 0; + f_send_cur_buf = 1; + } else { + f_send_aggr_buf = 1; + } + } else if (f_postcopy_cur_buf) { + f_send_cur_buf = 1; + f_postcopy_cur_buf = 0; + } + } + + if (f_precopy_cur_buf) { + skb_queue_tail(&port->tx_aggr.aggr_list, skb); + port->tx_aggr.aggr_len += (skb->len + pad); + port->tx_aggr.aggr_num++; + if (f_send_aggr_buf) + goto send_aggr_buf; + + /* packet will not been send immediately, + * set a timer to make sure it will be sent under + * strict time limit. Dynamically fit the timeout + * value, according to packets number in aggr_list + */ + if (!port->tx_aggr.timer_cnxt.is_hold_timer_set) { + port->tx_aggr.timer_cnxt.hold_tmo_msecs = + MWIFIEX_USB_TX_AGGR_TMO_MIN; + timeout = + port->tx_aggr.timer_cnxt.hold_tmo_msecs; + mod_timer(&port->tx_aggr.timer_cnxt.hold_timer, + jiffies + msecs_to_jiffies(timeout)); + port->tx_aggr.timer_cnxt.is_hold_timer_set = true; + } else { + if (port->tx_aggr.timer_cnxt.hold_tmo_msecs < + MWIFIEX_USB_TX_AGGR_TMO_MAX) { + /* Dyanmic fit timeout */ + timeout = + ++port->tx_aggr.timer_cnxt.hold_tmo_msecs; + mod_timer(&port->tx_aggr.timer_cnxt.hold_timer, + jiffies + msecs_to_jiffies(timeout)); + } + } + } + +send_aggr_buf: + if (f_send_aggr_buf) { + ret = mwifiex_usb_prepare_tx_aggr_skb(adapter, port, &skb_send); + if (!ret) { + context = &port->tx_data_list[port->tx_data_ix++]; + ret = mwifiex_usb_construct_send_urb(adapter, port, ep, + context, skb_send); + if (ret == -1) + mwifiex_write_data_complete(adapter, skb_send, + 0, -1); + } + } + + if (f_send_cur_buf) { + if (f_send_aggr_buf) { + if (atomic_read(&port->tx_data_urb_pending) >= + MWIFIEX_TX_DATA_URB) { + port->block_status = true; + adapter->data_sent = + mwifiex_usb_data_sent(adapter); + /* no available urb, postcopy packet*/ + f_postcopy_cur_buf = 1; + goto postcopy_cur_buf; + } + + if (port->tx_data_ix >= MWIFIEX_TX_DATA_URB) + port->tx_data_ix = 0; + } + + payload = skb->data; + *(__le16 *)&payload[2] = + cpu_to_le16(MWIFIEX_TYPE_AGGR_DATA_V2 | 0x80); + *(__le16 *)payload = cpu_to_le16(skb->len); + skb_send = skb; + context = &port->tx_data_list[port->tx_data_ix++]; + return mwifiex_usb_construct_send_urb(adapter, port, ep, + context, skb_send); + } + +postcopy_cur_buf: + if (f_postcopy_cur_buf) { + skb_queue_tail(&port->tx_aggr.aggr_list, skb); + port->tx_aggr.aggr_len += (skb->len + pad); + port->tx_aggr.aggr_num++; + /* New aggregation begin, start timer */ + if (!port->tx_aggr.timer_cnxt.is_hold_timer_set) { + port->tx_aggr.timer_cnxt.hold_tmo_msecs = + MWIFIEX_USB_TX_AGGR_TMO_MIN; + timeout = port->tx_aggr.timer_cnxt.hold_tmo_msecs; + mod_timer(&port->tx_aggr.timer_cnxt.hold_timer, + jiffies + msecs_to_jiffies(timeout)); + port->tx_aggr.timer_cnxt.is_hold_timer_set = true; + } + } + + return -EINPROGRESS; +} + +static void mwifiex_usb_tx_aggr_tmo(struct timer_list *t) +{ + struct urb_context *urb_cnxt = NULL; + struct sk_buff *skb_send = NULL; + struct tx_aggr_tmr_cnxt *timer_context = + from_timer(timer_context, t, hold_timer); + struct mwifiex_adapter *adapter = timer_context->adapter; + struct usb_tx_data_port *port = timer_context->port; + int err = 0; + + spin_lock_bh(&port->tx_aggr_lock); + err = mwifiex_usb_prepare_tx_aggr_skb(adapter, port, &skb_send); + if (err) { + mwifiex_dbg(adapter, ERROR, + "prepare tx aggr skb failed, err=%d\n", err); + goto unlock; + } + + if (atomic_read(&port->tx_data_urb_pending) >= + MWIFIEX_TX_DATA_URB) { + port->block_status = true; + adapter->data_sent = + mwifiex_usb_data_sent(adapter); + err = -1; + goto done; + } + + if (port->tx_data_ix >= MWIFIEX_TX_DATA_URB) + port->tx_data_ix = 0; + + urb_cnxt = &port->tx_data_list[port->tx_data_ix++]; + err = mwifiex_usb_construct_send_urb(adapter, port, port->tx_data_ep, + urb_cnxt, skb_send); +done: + if (err == -1) + mwifiex_write_data_complete(adapter, skb_send, 0, -1); +unlock: + spin_unlock_bh(&port->tx_aggr_lock); +} + +/* 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 = NULL; + struct usb_tx_data_port *port = NULL; + int idx, ret; + + if (test_bit(MWIFIEX_IS_SUSPENDED, &adapter->work_flags)) { + mwifiex_dbg(adapter, ERROR, + "%s: not allowed while suspended\n", __func__); + return -1; + } + + if (test_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags)) { + mwifiex_dbg(adapter, ERROR, "%s: device removed\n", __func__); + return -1; + } + + mwifiex_dbg(adapter, INFO, "%s: ep=%d\n", __func__, ep); + + if (ep == card->tx_cmd_ep) { + context = &card->tx_cmd; + } else { + /* get the data port structure for endpoint */ + for (idx = 0; idx < MWIFIEX_TX_DATA_PORT; idx++) { + if (ep == card->port[idx].tx_data_ep) { + port = &card->port[idx]; + if (atomic_read(&port->tx_data_urb_pending) + >= MWIFIEX_TX_DATA_URB) { + port->block_status = true; + adapter->data_sent = + mwifiex_usb_data_sent(adapter); + return -EBUSY; + } + if (port->tx_data_ix >= MWIFIEX_TX_DATA_URB) + port->tx_data_ix = 0; + break; + } + } + + if (!port) { + mwifiex_dbg(adapter, ERROR, "Wrong usb tx data port\n"); + return -1; + } + + if (adapter->bus_aggr.enable) { + spin_lock_bh(&port->tx_aggr_lock); + ret = mwifiex_usb_aggr_tx_data(adapter, ep, skb, + tx_param, port); + spin_unlock_bh(&port->tx_aggr_lock); + return ret; + } + + context = &port->tx_data_list[port->tx_data_ix++]; + } + + return mwifiex_usb_construct_send_urb(adapter, port, ep, context, skb); +} + +static int mwifiex_usb_tx_init(struct mwifiex_adapter *adapter) +{ + struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; + struct usb_tx_data_port *port; + int i, j; + + 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) + return -ENOMEM; + + for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) { + port = &card->port[i]; + if (!port->tx_data_ep) + continue; + port->tx_data_ix = 0; + skb_queue_head_init(&port->tx_aggr.aggr_list); + if (port->tx_data_ep == MWIFIEX_USB_EP_DATA) + port->block_status = false; + else + port->block_status = true; + for (j = 0; j < MWIFIEX_TX_DATA_URB; j++) { + port->tx_data_list[j].adapter = adapter; + port->tx_data_list[j].ep = port->tx_data_ep; + port->tx_data_list[j].urb = + usb_alloc_urb(0, GFP_KERNEL); + if (!port->tx_data_list[j].urb) + return -ENOMEM; + } + + port->tx_aggr.timer_cnxt.adapter = adapter; + port->tx_aggr.timer_cnxt.port = port; + port->tx_aggr.timer_cnxt.is_hold_timer_set = false; + port->tx_aggr.timer_cnxt.hold_tmo_msecs = 0; + timer_setup(&port->tx_aggr.timer_cnxt.hold_timer, + mwifiex_usb_tx_aggr_tmo, 0); + } + + 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) + return -ENOMEM; + + card->rx_cmd.skb = dev_alloc_skb(MWIFIEX_RX_CMD_BUF_SIZE); + if (!card->rx_cmd.skb) + 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) + return -1; + if (mwifiex_usb_submit_rx_urb(&card->rx_data_list[i], + MWIFIEX_RX_DATA_BUF_SIZE)) + return -1; + } + + return 0; +} + +/* 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; + + switch (le16_to_cpu(card->udev->descriptor.idProduct)) { + case USB8997_PID_1: + case USB8997_PID_2: + adapter->tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_4K; + strcpy(adapter->fw_name, USB8997_DEFAULT_FW_NAME); + adapter->ext_scan = true; + break; + case USB8766_PID_1: + case USB8766_PID_2: + adapter->tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K; + strcpy(adapter->fw_name, USB8766_DEFAULT_FW_NAME); + adapter->ext_scan = true; + break; + case USB8801_PID_1: + case USB8801_PID_2: + adapter->tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K; + strcpy(adapter->fw_name, USB8801_DEFAULT_FW_NAME); + adapter->ext_scan = false; + 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; + } + + adapter->usb_mc_status = false; + adapter->usb_mc_setup = false; + + return 0; +} + +static void mwifiex_usb_cleanup_tx_aggr(struct mwifiex_adapter *adapter) +{ + struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; + struct usb_tx_data_port *port; + struct sk_buff *skb_tmp; + int idx; + + for (idx = 0; idx < MWIFIEX_TX_DATA_PORT; idx++) { + port = &card->port[idx]; + if (adapter->bus_aggr.enable) + while ((skb_tmp = + skb_dequeue(&port->tx_aggr.aggr_list))) + mwifiex_write_data_complete(adapter, skb_tmp, + 0, -1); + if (port->tx_aggr.timer_cnxt.hold_timer.function) + del_timer_sync(&port->tx_aggr.timer_cnxt.hold_timer); + port->tx_aggr.timer_cnxt.is_hold_timer_set = false; + port->tx_aggr.timer_cnxt.hold_tmo_msecs = 0; + } +} + +static void mwifiex_unregister_dev(struct mwifiex_adapter *adapter) +{ + struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; + + mwifiex_usb_free(card); + + mwifiex_usb_cleanup_tx_aggr(adapter); + + 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 + 1; + u32 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) { + mwifiex_dbg(adapter, ERROR, + "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) { + ret = -ENOMEM; + goto fw_exit; + } + + /* Allocate memory for receive */ + recv_buff = kzalloc(FW_DNLD_RX_BUF_SIZE, GFP_KERNEL); + if (!recv_buff) { + ret = -ENOMEM; + 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); + + /* Command 7 doesn't have data length field */ + if (dnld_cmd == FW_CMD_7) + dlen = 0; + + 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) { + mwifiex_dbg(adapter, ERROR, + "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) { + mwifiex_dbg(adapter, ERROR, + "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) { + mwifiex_dbg(adapter, WARN, + "USB is not the winner %#x\n", + sync_fw.cmd); + + /* returning success */ + ret = 0; + goto cleanup; + } + + mwifiex_dbg(adapter, MSG, + "start to download FW...\n"); + + check_winner = 0; + break; + } + + /* check the firmware block response for CRC errors */ + if (sync_fw.cmd) { + mwifiex_dbg(adapter, ERROR, + "FW received block with CRC %#x\n", + sync_fw.cmd); + ret = -1; + continue; + } + + retries = USB8XXX_FW_MAX_RETRY + 1; + break; + } + fw_seqnum++; + } while ((dnld_cmd != FW_HAS_LAST_BLOCK) && retries); + +cleanup: + mwifiex_dbg(adapter, MSG, + "info: FW download over, size %d bytes\n", 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) +{ + mwifiex_submit_rx_urb(adapter, MWIFIEX_USB_EP_CMD_EVENT); + + 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; + del_timer(&adapter->wakeup_timer); + adapter->pm_wakeup_card_req = false; + adapter->ps_state = PS_STATE_AWAKE; + + return 0; +} + +static void mwifiex_usb_submit_rem_rx_urbs(struct mwifiex_adapter *adapter) +{ + struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; + int i; + struct urb_context *ctx; + + for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) { + if (card->rx_data_list[i].skb) + continue; + ctx = &card->rx_data_list[i]; + mwifiex_usb_submit_rx_urb(ctx, MWIFIEX_RX_DATA_BUF_SIZE); + } +} + +/* This function is called after the card has woken up. */ +static inline int +mwifiex_pm_wakeup_card_complete(struct mwifiex_adapter *adapter) +{ + 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, + .host_to_card = mwifiex_usb_host_to_card, + .submit_rem_rx_urbs = mwifiex_usb_submit_rem_rx_urbs, + .multi_port_resync = mwifiex_usb_port_resync, + .is_port_ready = mwifiex_usb_is_port_ready, +}; + +module_usb_driver(mwifiex_usb_driver); + +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(USB8766_DEFAULT_FW_NAME); +MODULE_FIRMWARE(USB8797_DEFAULT_FW_NAME); +MODULE_FIRMWARE(USB8801_DEFAULT_FW_NAME); +MODULE_FIRMWARE(USB8997_DEFAULT_FW_NAME); |