static int brcmf_usb_up(struct device *dev)
{
struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev);
brcmf_dbg(USB, "Enter\n");
if (devinfo->bus_pub.state == BRCMFMAC_USB_STATE_UP)
return 0;
/* Success, indicate devinfo is fully up */
brcmf_usb_state_change(devinfo, BRCMFMAC_USB_STATE_UP);
if (devinfo->ctl_urb) {
devinfo->ctl_in_pipe = usb_rcvctrlpipe(devinfo->usbdev, 0);
devinfo->ctl_out_pipe = usb_sndctrlpipe(devinfo->usbdev, 0);
/* CTL Write */
devinfo->ctl_write.bRequestType =
USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE;
devinfo->ctl_write.bRequest = 0;
devinfo->ctl_write.wValue = cpu_to_le16(0);
devinfo->ctl_write.wIndex = cpu_to_le16(devinfo->ifnum);
/* CTL Read */
devinfo->ctl_read.bRequestType =
USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE;
devinfo->ctl_read.bRequest = 1;
devinfo->ctl_read.wValue = cpu_to_le16(0);
devinfo->ctl_read.wIndex = cpu_to_le16(devinfo->ifnum);
}
brcmf_usb_rx_fill_all(devinfo);
return 0;
}
static int brcmf_usb_rx_ctlpkt(struct device *dev, u8 *buf, u32 len)
{
int err = 0;
int timeout = 0;
struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev);
brcmf_dbg(USB, "Enter\n");
if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP)
return -EIO;
if (test_and_set_bit(0, &devinfo->ctl_op))
return -EIO;
devinfo->ctl_completed = false;
err = brcmf_usb_recv_ctl(devinfo, buf, len);
if (err) {
brcmf_err("fail %d bytes: %d\n", err, len);
clear_bit(0, &devinfo->ctl_op);
return err;
}
timeout = brcmf_usb_ioctl_resp_wait(devinfo);
err = devinfo->ctl_urb_status;
clear_bit(0, &devinfo->ctl_op);
if (!timeout) {
brcmf_err("rxctl wait timed out\n");
err = -EIO;
}
if (!err)
return devinfo->ctl_urb_actual_length;
else
return err;
}
static int brcmf_usb_rx_ctlpkt(struct device *dev, u8 *buf, u32 len)
{
int err = 0;
int timeout = 0;
bool pending;
struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev);
if (devinfo->bus_pub.state != BCMFMAC_USB_STATE_UP) {
/* TODO: handle suspend/resume */
return -EIO;
}
if (test_and_set_bit(0, &devinfo->ctl_op))
return -EIO;
err = brcmf_usb_recv_ctl(devinfo, buf, len);
if (err) {
brcmf_dbg(ERROR, "fail %d bytes: %d\n", err, len);
return err;
}
devinfo->ctl_completed = false;
timeout = brcmf_usb_ioctl_resp_wait(devinfo, &devinfo->ctl_completed,
&pending);
err = devinfo->ctl_urb_status;
clear_bit(0, &devinfo->ctl_op);
if (!timeout) {
brcmf_dbg(ERROR, "rxctl wait timed out\n");
err = -EIO;
}
if (!err)
return devinfo->ctl_urb_actual_length;
else
return err;
}
static int brcmf_usb_tx(struct device *dev, struct sk_buff *skb)
{
struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev);
struct brcmf_usbreq *req;
int ret;
if (devinfo->bus_pub.state != BCMFMAC_USB_STATE_UP) {
/* TODO: handle suspend/resume */
return -EIO;
}
req = brcmf_usb_deq(devinfo, &devinfo->tx_freeq);
if (!req) {
brcmu_pkt_buf_free_skb(skb);
brcmf_dbg(ERROR, "no req to send\n");
return -ENOMEM;
}
req->skb = skb;
req->devinfo = devinfo;
usb_fill_bulk_urb(req->urb, devinfo->usbdev, devinfo->tx_pipe,
skb->data, skb->len, brcmf_usb_tx_complete, req);
req->urb->transfer_flags |= URB_ZERO_PACKET;
brcmf_usb_enq(devinfo, &devinfo->tx_postq, req);
ret = usb_submit_urb(req->urb, GFP_ATOMIC);
if (ret) {
brcmf_dbg(ERROR, "brcmf_usb_tx usb_submit_urb FAILED\n");
brcmf_usb_del_fromq(devinfo, req);
brcmu_pkt_buf_free_skb(req->skb);
req->skb = NULL;
brcmf_usb_enq(devinfo, &devinfo->tx_freeq, req);
}
return ret;
}
/*
* mark suspend state active and crank up the bus.
*/
static int brcmf_usb_resume(struct usb_interface *intf)
{
struct usb_device *usb = interface_to_usbdev(intf);
struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(&usb->dev);
brcmf_dbg(TRACE, "enter\n");
devinfo->suspend_state = USBOS_SUSPEND_STATE_DEVICE_ACTIVE;
brcmf_bus_start(&usb->dev);
return 0;
}
/*
* only need to signal the bus being down and update the suspend state.
*/
static int brcmf_usb_suspend(struct usb_interface *intf, pm_message_t state)
{
struct usb_device *usb = interface_to_usbdev(intf);
struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(&usb->dev);
brcmf_dbg(TRACE, "enter\n");
devinfo->bus_pub.state = BCMFMAC_USB_STATE_DOWN;
devinfo->suspend_state = USBOS_SUSPEND_STATE_SUSPENDED;
return 0;
}
static int brcmf_usb_reset_resume(struct usb_interface *intf)
{
struct usb_device *usb = interface_to_usbdev(intf);
struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(&usb->dev);
brcmf_dbg(USB, "Enter\n");
return brcmf_fw_get_firmwares(&usb->dev, 0,
brcmf_usb_get_fwname(devinfo), NULL,
brcmf_usb_probe_phase2);
}
static void brcmf_usb_wowl_config(struct device *dev, bool enabled)
{
struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev);
brcmf_dbg(USB, "Configuring WOWL, enabled=%d\n", enabled);
devinfo->wowl_enabled = enabled;
if (enabled)
device_set_wakeup_enable(devinfo->dev, true);
else
device_set_wakeup_enable(devinfo->dev, false);
}
/*
* (re-) start the bus.
*/
static int brcmf_usb_resume(struct usb_interface *intf)
{
struct usb_device *usb = interface_to_usbdev(intf);
struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(&usb->dev);
brcmf_dbg(USB, "Enter\n");
if (!devinfo->wowl_enabled)
return brcmf_usb_bus_setup(devinfo);
devinfo->bus_pub.state = BRCMFMAC_USB_STATE_UP;
brcmf_usb_rx_fill_all(devinfo);
return 0;
}
/*
* only need to signal the bus being down and update the state.
*/
static int brcmf_usb_suspend(struct usb_interface *intf, pm_message_t state)
{
struct usb_device *usb = interface_to_usbdev(intf);
struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(&usb->dev);
brcmf_dbg(USB, "Enter\n");
devinfo->bus_pub.state = BRCMFMAC_USB_STATE_SLEEP;
if (devinfo->wowl_enabled)
brcmf_cancel_all_urbs(devinfo);
else
brcmf_detach(&usb->dev);
return 0;
}
static int brcmf_usb_tx(struct device *dev, struct sk_buff *skb)
{
struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev);
struct brcmf_usbreq *req;
int ret;
unsigned long flags;
brcmf_dbg(USB, "Enter, skb=%p\n", skb);
if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP) {
ret = -EIO;
goto fail;
}
req = brcmf_usb_deq(devinfo, &devinfo->tx_freeq,
&devinfo->tx_freecount);
if (!req) {
brcmf_err("no req to send\n");
ret = -ENOMEM;
goto fail;
}
req->skb = skb;
req->devinfo = devinfo;
usb_fill_bulk_urb(req->urb, devinfo->usbdev, devinfo->tx_pipe,
skb->data, skb->len, brcmf_usb_tx_complete, req);
req->urb->transfer_flags |= URB_ZERO_PACKET;
brcmf_usb_enq(devinfo, &devinfo->tx_postq, req, NULL);
ret = usb_submit_urb(req->urb, GFP_ATOMIC);
if (ret) {
brcmf_err("brcmf_usb_tx usb_submit_urb FAILED\n");
brcmf_usb_del_fromq(devinfo, req);
req->skb = NULL;
brcmf_usb_enq(devinfo, &devinfo->tx_freeq, req,
&devinfo->tx_freecount);
goto fail;
}
spin_lock_irqsave(&devinfo->tx_flowblock_lock, flags);
if (devinfo->tx_freecount < devinfo->tx_low_watermark &&
!devinfo->tx_flowblock) {
brcmf_txflowblock(dev, true);
devinfo->tx_flowblock = true;
}
spin_unlock_irqrestore(&devinfo->tx_flowblock_lock, flags);
return 0;
fail:
return ret;
}
static void brcmf_usb_down(struct device *dev)
{
struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev);
brcmf_dbg(USB, "Enter\n");
if (devinfo == NULL)
return;
if (devinfo->bus_pub.state == BRCMFMAC_USB_STATE_DOWN)
return;
brcmf_usb_state_change(devinfo, BRCMFMAC_USB_STATE_DOWN);
brcmf_cancel_all_urbs(devinfo);
}
static int brcmf_usb_reset_resume(struct usb_interface *intf)
{
struct usb_device *usb = interface_to_usbdev(intf);
struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(&usb->dev);
struct brcmf_fw_request *fwreq;
int ret;
brcmf_dbg(USB, "Enter\n");
fwreq = brcmf_usb_prepare_fw_request(devinfo);
if (!fwreq)
return -ENOMEM;
ret = brcmf_fw_get_firmwares(&usb->dev, fwreq, brcmf_usb_probe_phase2);
if (ret < 0)
kfree(fwreq);
return ret;
}
static void brcmf_usb_down(struct device *dev)
{
struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev);
if (devinfo == NULL)
return;
brcmf_dbg(TRACE, "enter\n");
if (devinfo->bus_pub.state == BCMFMAC_USB_STATE_DOWN)
return;
brcmf_usb_state_change(devinfo, BCMFMAC_USB_STATE_DOWN);
if (devinfo->intr_urb)
usb_kill_urb(devinfo->intr_urb);
if (devinfo->ctl_urb)
usb_kill_urb(devinfo->ctl_urb);
if (devinfo->bulk_urb)
usb_kill_urb(devinfo->bulk_urb);
brcmf_usb_free_q(&devinfo->tx_postq, true);
brcmf_usb_free_q(&devinfo->rx_postq, true);
}
static int brcmf_usb_up(struct device *dev)
{
struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev);
u16 ifnum;
if (devinfo->bus_pub.state == BCMFMAC_USB_STATE_UP)
return 0;
/* If the USB/HSIC bus in sleep state, wake it up */
if (devinfo->suspend_state == USBOS_SUSPEND_STATE_SUSPENDED) {
if (brcmf_usb_pnp(devinfo, BCMFMAC_USB_PNP_RESUME) != 0) {
brcmf_dbg(ERROR, "Could not Resume the bus!\n");
return -EIO;
}
}
devinfo->activity = true;
/* Success, indicate devinfo is fully up */
brcmf_usb_state_change(devinfo, BCMFMAC_USB_STATE_UP);
if (devinfo->intr_urb) {
int ret;
usb_fill_int_urb(devinfo->intr_urb, devinfo->usbdev,
devinfo->intr_pipe,
&devinfo->intr,
devinfo->intr_size,
(usb_complete_t)brcmf_usb_intr_complete,
devinfo,
devinfo->interval);
ret = usb_submit_urb(devinfo->intr_urb, GFP_ATOMIC);
if (ret) {
brcmf_dbg(ERROR, "USB_SUBMIT_URB failed with status %d\n",
ret);
return -EINVAL;
}
}
if (devinfo->ctl_urb) {
devinfo->ctl_in_pipe = usb_rcvctrlpipe(devinfo->usbdev, 0);
devinfo->ctl_out_pipe = usb_sndctrlpipe(devinfo->usbdev, 0);
ifnum = IFDESC(devinfo->usbdev, CONTROL_IF).bInterfaceNumber;
/* CTL Write */
devinfo->ctl_write.bRequestType =
USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE;
devinfo->ctl_write.bRequest = 0;
devinfo->ctl_write.wValue = cpu_to_le16(0);
devinfo->ctl_write.wIndex = cpu_to_le16p(&ifnum);
/* CTL Read */
devinfo->ctl_read.bRequestType =
USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE;
devinfo->ctl_read.bRequest = 1;
devinfo->ctl_read.wValue = cpu_to_le16(0);
devinfo->ctl_read.wIndex = cpu_to_le16p(&ifnum);
}
brcmf_usb_rx_fill_all(devinfo);
return 0;
}
