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original_kernel/drivers/net/wireless/marvell/mwifiex/usb.c

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// 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,
.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);
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