/** * This file contains functions used in USB interface module. */ #include #include #include #include #include "host.h" #include "sbi.h" #include "decl.h" #include "defs.h" #include "dev.h" #include "if_usb.h" #define MESSAGE_HEADER_LEN 4 static const char usbdriver_name[] = "usb8xxx"; static struct usb_device_id if_usb_table[] = { /* Enter the device signature inside */ { USB_DEVICE(USB8388_VID_1, USB8388_PID_1), }, { USB_DEVICE(USB8388_VID_2, USB8388_PID_2), }, {} /* Terminating entry */ }; MODULE_DEVICE_TABLE(usb, if_usb_table); static void if_usb_receive(struct urb *urb); static void if_usb_receive_fwload(struct urb *urb); /** * @brief call back function to handle the status of the URB * @param urb pointer to urb structure * @return N/A */ static void if_usb_write_bulk_callback(struct urb *urb) { wlan_private *priv = (wlan_private *) (urb->context); wlan_adapter *adapter = priv->adapter; struct net_device *dev = priv->wlan_dev.netdev; /* handle the transmission complete validations */ if (urb->status != 0) { /* print the failure status number for debug */ lbs_pr_info("URB in failure status\n"); } else { lbs_dev_dbg(2, &urb->dev->dev, "URB status is successfull\n"); lbs_dev_dbg(2, &urb->dev->dev, "Actual length transmitted %d\n", urb->actual_length); priv->wlan_dev.dnld_sent = DNLD_RES_RECEIVED; /* Wake main thread if commands are pending */ if (!adapter->cur_cmd) wake_up_interruptible(&priv->mainthread.waitq); if ((adapter->connect_status == libertas_connected)) netif_wake_queue(dev); } return; } /** * @brief free tx/rx urb, skb and rx buffer * @param cardp pointer usb_card_rec * @return N/A */ void if_usb_free(struct usb_card_rec *cardp) { ENTER(); /* Unlink tx & rx urb */ usb_kill_urb(cardp->tx_urb); usb_kill_urb(cardp->rx_urb); usb_free_urb(cardp->tx_urb); cardp->tx_urb = NULL; usb_free_urb(cardp->rx_urb); cardp->rx_urb = NULL; kfree(cardp->bulk_out_buffer); cardp->bulk_out_buffer = NULL; LEAVE(); return; } /** * @brief sets the configuration values * @param ifnum interface number * @param id pointer to usb_device_id * @return 0 on success, error code on failure */ static int if_usb_probe(struct usb_interface *intf, const struct usb_device_id *id) { struct usb_device *udev; struct usb_host_interface *iface_desc; struct usb_endpoint_descriptor *endpoint; wlan_private *pwlanpriv; struct usb_card_rec *usb_cardp; int i; udev = interface_to_usbdev(intf); usb_cardp = kzalloc(sizeof(struct usb_card_rec), GFP_KERNEL); if (!usb_cardp) { lbs_pr_err("Out of memory allocating private data.\n"); goto error; } usb_cardp->udev = udev; iface_desc = intf->cur_altsetting; lbs_dev_dbg(1, &udev->dev, "bcdUSB = 0x%X bDeviceClass = 0x%X" " bDeviceSubClass = 0x%X, bDeviceProtocol = 0x%X\n", udev->descriptor.bcdUSB, udev->descriptor.bDeviceClass, udev->descriptor.bDeviceSubClass, udev->descriptor.bDeviceProtocol); for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { endpoint = &iface_desc->endpoint[i].desc; if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) && ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_BULK)) { /* we found a bulk in endpoint */ lbs_dev_dbg(1, &udev->dev, "Bulk in size is %d\n", endpoint->wMaxPacketSize); if (! (usb_cardp->rx_urb = usb_alloc_urb(0, GFP_KERNEL))) { lbs_dev_dbg(1, &udev->dev, "Rx URB allocation failed\n"); goto dealloc; } usb_cardp->rx_urb_recall = 0; usb_cardp->bulk_in_size = endpoint->wMaxPacketSize; usb_cardp->bulk_in_endpointAddr = (endpoint-> bEndpointAddress & USB_ENDPOINT_NUMBER_MASK); lbs_dev_dbg(1, &udev->dev, "in_endpoint = %d\n", endpoint->bEndpointAddress); } if (((endpoint-> bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) && ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_BULK)) { /* We found bulk out endpoint */ if (! (usb_cardp->tx_urb = usb_alloc_urb(0, GFP_KERNEL))) { lbs_dev_dbg(1,&udev->dev, "Tx URB allocation failed\n"); goto dealloc; } usb_cardp->bulk_out_size = endpoint->wMaxPacketSize; lbs_dev_dbg(1, &udev->dev, "Bulk out size is %d\n", endpoint->wMaxPacketSize); usb_cardp->bulk_out_endpointAddr = endpoint->bEndpointAddress; lbs_dev_dbg(1, &udev->dev, "out_endpoint = %d\n", endpoint->bEndpointAddress); usb_cardp->bulk_out_buffer = kmalloc(MRVDRV_ETH_TX_PACKET_BUFFER_SIZE, GFP_KERNEL); if (!usb_cardp->bulk_out_buffer) { lbs_dev_dbg(1, &udev->dev, "Could not allocate buffer\n"); goto dealloc; } } } /* At this point wlan_add_card() will be called. Don't worry * about keeping pwlanpriv around since it will be set on our * usb device data in -> add() -> libertas_sbi_register_dev(). */ if (!(pwlanpriv = wlan_add_card(usb_cardp))) goto dealloc; usb_get_dev(udev); usb_set_intfdata(intf, usb_cardp); /* * return card structure, which can be got back in the * diconnect function as the ptr * argument. */ return 0; dealloc: if_usb_free(usb_cardp); error: return -ENOMEM; } /** * @brief free resource and cleanup * @param udev pointer to usb_device * @param ptr pointer to usb_cardp * @return N/A */ static void if_usb_disconnect(struct usb_interface *intf) { struct usb_card_rec *cardp = usb_get_intfdata(intf); wlan_private *priv = (wlan_private *) cardp->priv; wlan_adapter *adapter = NULL; adapter = priv->adapter; /* * Update Surprise removed to TRUE */ adapter->surpriseremoved = 1; /* card is removed and we can call wlan_remove_card */ lbs_dev_dbg(1, &cardp->udev->dev, "call remove card\n"); wlan_remove_card(cardp); /* Unlink and free urb */ if_usb_free(cardp); usb_set_intfdata(intf, NULL); usb_put_dev(interface_to_usbdev(intf)); return; } /** * @brief This function download FW * @param priv pointer to wlan_private * @return 0 */ static int if_prog_firmware(wlan_private * priv) { struct usb_card_rec *cardp = priv->wlan_dev.card; struct FWData *fwdata; struct fwheader *fwheader; u8 *firmware = priv->firmware->data; fwdata = kmalloc(sizeof(struct FWData), GFP_ATOMIC); if (!fwdata) return -1; fwheader = &fwdata->fwheader; if (!cardp->CRC_OK) { cardp->totalbytes = cardp->fwlastblksent; cardp->fwseqnum = cardp->lastseqnum - 1; } lbs_dev_dbg(2, &cardp->udev->dev, "totalbytes = %d\n", cardp->totalbytes); memcpy(fwheader, &firmware[cardp->totalbytes], sizeof(struct fwheader)); cardp->fwlastblksent = cardp->totalbytes; cardp->totalbytes += sizeof(struct fwheader); lbs_dev_dbg(2, &cardp->udev->dev,"Copy Data\n"); memcpy(fwdata->data, &firmware[cardp->totalbytes], fwdata->fwheader.datalength); lbs_dev_dbg(2, &cardp->udev->dev, "Data length = %d\n", fwdata->fwheader.datalength); cardp->fwseqnum = cardp->fwseqnum + 1; fwdata->seqnum = cardp->fwseqnum; cardp->lastseqnum = fwdata->seqnum; cardp->totalbytes += fwdata->fwheader.datalength; if (fwheader->dnldcmd == FW_HAS_DATA_TO_RECV) { lbs_dev_dbg(2, &cardp->udev->dev, "There is data to follow\n"); lbs_dev_dbg(2, &cardp->udev->dev, "seqnum = %d totalbytes = %d\n", cardp->fwseqnum, cardp->totalbytes); memcpy(cardp->bulk_out_buffer, fwheader, FW_DATA_XMIT_SIZE); usb_tx_block(priv, cardp->bulk_out_buffer, FW_DATA_XMIT_SIZE); } else if (fwdata->fwheader.dnldcmd == FW_HAS_LAST_BLOCK) { lbs_dev_dbg(2, &cardp->udev->dev, "Host has finished FW downloading\n"); lbs_dev_dbg(2, &cardp->udev->dev, "Donwloading FW JUMP BLOCK\n"); memcpy(cardp->bulk_out_buffer, fwheader, FW_DATA_XMIT_SIZE); usb_tx_block(priv, cardp->bulk_out_buffer, FW_DATA_XMIT_SIZE); cardp->fwfinalblk = 1; } lbs_dev_dbg(2, &cardp->udev->dev, "The firmware download is done size is %d\n", cardp->totalbytes); kfree(fwdata); return 0; } static int libertas_do_reset(wlan_private *priv) { int ret; struct usb_card_rec *cardp = priv->wlan_dev.card; ret = usb_reset_device(cardp->udev); if (!ret) { msleep(10); reset_device(priv); msleep(10); } return ret; } /** * @brief This function transfer the data to the device. * @param priv pointer to wlan_private * @param payload pointer to payload data * @param nb data length * @return 0 or -1 */ int usb_tx_block(wlan_private * priv, u8 * payload, u16 nb) { /* pointer to card structure */ struct usb_card_rec *cardp = priv->wlan_dev.card; int ret = -1; /* check if device is removed */ if (priv->adapter->surpriseremoved) { lbs_dev_dbg(1, &cardp->udev->dev, "Device removed\n"); goto tx_ret; } usb_fill_bulk_urb(cardp->tx_urb, cardp->udev, usb_sndbulkpipe(cardp->udev, cardp->bulk_out_endpointAddr), payload, nb, if_usb_write_bulk_callback, priv); cardp->tx_urb->transfer_flags |= URB_ZERO_PACKET; if ((ret = usb_submit_urb(cardp->tx_urb, GFP_ATOMIC))) { /* transfer failed */ lbs_dev_dbg(1, &cardp->udev->dev, "usb_submit_urb failed\n"); ret = -1; } else { lbs_dev_dbg(2, &cardp->udev->dev, "usb_submit_urb success\n"); ret = 0; } tx_ret: return ret; } static int __if_usb_submit_rx_urb(wlan_private * priv, void (*callbackfn) (struct urb *urb)) { struct usb_card_rec *cardp = priv->wlan_dev.card; struct sk_buff *skb; struct read_cb_info *rinfo = &cardp->rinfo; int ret = -1; if (!(skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE))) { lbs_pr_err("No free skb\n"); goto rx_ret; } rinfo->skb = skb; /* Fill the receive configuration URB and initialise the Rx call back */ usb_fill_bulk_urb(cardp->rx_urb, cardp->udev, usb_rcvbulkpipe(cardp->udev, cardp->bulk_in_endpointAddr), skb->tail + IPFIELD_ALIGN_OFFSET, MRVDRV_ETH_RX_PACKET_BUFFER_SIZE, callbackfn, rinfo); cardp->rx_urb->transfer_flags |= URB_ZERO_PACKET; lbs_dev_dbg(2, &cardp->udev->dev, "Pointer for rx_urb %p\n", cardp->rx_urb); if ((ret = usb_submit_urb(cardp->rx_urb, GFP_ATOMIC))) { /* handle failure conditions */ lbs_dev_dbg(1, &cardp->udev->dev, "Submit Rx URB failed\n"); ret = -1; } else { lbs_dev_dbg(2, &cardp->udev->dev, "Submit Rx URB success\n"); ret = 0; } rx_ret: return ret; } static inline int if_usb_submit_rx_urb_fwload(wlan_private * priv) { return __if_usb_submit_rx_urb(priv, &if_usb_receive_fwload); } static inline int if_usb_submit_rx_urb(wlan_private * priv) { return __if_usb_submit_rx_urb(priv, &if_usb_receive); } static void if_usb_receive_fwload(struct urb *urb) { struct read_cb_info *rinfo = (struct read_cb_info *)urb->context; wlan_private *priv = rinfo->priv; struct sk_buff *skb = rinfo->skb; struct usb_card_rec *cardp = (struct usb_card_rec *)priv->wlan_dev.card; struct fwsyncheader *syncfwheader; struct bootcmdrespStr bootcmdresp; if (urb->status) { lbs_dev_dbg(1, &cardp->udev->dev, "URB status is failed during fw load\n"); kfree_skb(skb); return; } if (cardp->bootcmdresp == 0) { memcpy (&bootcmdresp, skb->data + IPFIELD_ALIGN_OFFSET, sizeof(bootcmdresp)); if (cardp->udev->descriptor.bcdDevice < 0x3106) { kfree_skb(skb); if_usb_submit_rx_urb_fwload(priv); cardp->bootcmdresp = 1; lbs_dev_dbg(1, &cardp->udev->dev, "Received valid boot command response\n"); return; } if (bootcmdresp.u32magicnumber != BOOT_CMD_MAGIC_NUMBER) { lbs_pr_info( "boot cmd response wrong magic number (0x%x)\n", bootcmdresp.u32magicnumber); } else if (bootcmdresp.u8cmd_tag != BOOT_CMD_FW_BY_USB) { lbs_pr_info( "boot cmd response cmd_tag error (%d)\n", bootcmdresp.u8cmd_tag); } else if (bootcmdresp.u8result != BOOT_CMD_RESP_OK) { lbs_pr_info( "boot cmd response result error (%d)\n", bootcmdresp.u8result); } else { cardp->bootcmdresp = 1; lbs_dev_dbg(1, &cardp->udev->dev, "Received valid boot command response\n"); } kfree_skb(skb); if_usb_submit_rx_urb_fwload(priv); return; } syncfwheader = kmalloc(sizeof(struct fwsyncheader), GFP_ATOMIC); if (!syncfwheader) { lbs_dev_dbg(1, &cardp->udev->dev, "Failure to allocate syncfwheader\n"); kfree_skb(skb); return; } memcpy(syncfwheader, skb->data + IPFIELD_ALIGN_OFFSET, sizeof(struct fwsyncheader)); if (!syncfwheader->cmd) { lbs_dev_dbg(2, &cardp->udev->dev, "FW received Blk with correct CRC\n"); lbs_dev_dbg(2, &cardp->udev->dev, "FW received Blk seqnum = %d\n", syncfwheader->seqnum); cardp->CRC_OK = 1; } else { lbs_dev_dbg(1, &cardp->udev->dev, "FW received Blk with CRC error\n"); cardp->CRC_OK = 0; } kfree_skb(skb); if (cardp->fwfinalblk) { cardp->fwdnldover = 1; goto exit; } if_prog_firmware(priv); if_usb_submit_rx_urb_fwload(priv); exit: kfree(syncfwheader); return; } #define MRVDRV_MIN_PKT_LEN 30 static inline void process_cmdtypedata(int recvlength, struct sk_buff *skb, struct usb_card_rec *cardp, wlan_private *priv) { if (recvlength > MRVDRV_ETH_RX_PACKET_BUFFER_SIZE + MESSAGE_HEADER_LEN || recvlength < MRVDRV_MIN_PKT_LEN) { lbs_dev_dbg(1, &cardp->udev->dev, "Packet length is Invalid\n"); kfree_skb(skb); return; } skb_reserve(skb, IPFIELD_ALIGN_OFFSET); skb_put(skb, recvlength); skb_pull(skb, MESSAGE_HEADER_LEN); libertas_process_rxed_packet(priv, skb); priv->wlan_dev.upld_len = (recvlength - MESSAGE_HEADER_LEN); } static inline void process_cmdrequest(int recvlength, u8 *recvbuff, struct sk_buff *skb, struct usb_card_rec *cardp, wlan_private *priv) { u8 *cmdbuf; if (recvlength > MRVDRV_SIZE_OF_CMD_BUFFER) { lbs_dev_dbg(1, &cardp->udev->dev, "The receive buffer is too large\n"); kfree_skb(skb); return; } if (!in_interrupt()) BUG(); spin_lock(&priv->adapter->driver_lock); /* take care of cur_cmd = NULL case by reading the * data to clear the interrupt */ if (!priv->adapter->cur_cmd) { cmdbuf = priv->wlan_dev.upld_buf; priv->adapter->hisregcpy &= ~his_cmdupldrdy; } else cmdbuf = priv->adapter->cur_cmd->bufvirtualaddr; cardp->usb_int_cause |= his_cmdupldrdy; priv->wlan_dev.upld_len = (recvlength - MESSAGE_HEADER_LEN); memcpy(cmdbuf, recvbuff + MESSAGE_HEADER_LEN, priv->wlan_dev.upld_len); kfree_skb(skb); libertas_interrupt(priv->wlan_dev.netdev); spin_unlock(&priv->adapter->driver_lock); lbs_dev_dbg(1, &cardp->udev->dev, "Wake up main thread to handle cmd response\n"); return; } /** * @brief This function reads of the packet into the upload buff, * wake up the main thread and initialise the Rx callack. * * @param urb pointer to struct urb * @return N/A */ static void if_usb_receive(struct urb *urb) { struct read_cb_info *rinfo = (struct read_cb_info *)urb->context; wlan_private *priv = rinfo->priv; struct sk_buff *skb = rinfo->skb; struct usb_card_rec *cardp = (struct usb_card_rec *)priv->wlan_dev.card; int recvlength = urb->actual_length; u8 *recvbuff = NULL; u32 recvtype; ENTER(); if (recvlength) { if (urb->status) { lbs_dev_dbg(1, &cardp->udev->dev, "URB status is failed\n"); kfree_skb(skb); goto setup_for_next; } recvbuff = skb->data + IPFIELD_ALIGN_OFFSET; memcpy(&recvtype, recvbuff, sizeof(u32)); lbs_dev_dbg(1, &cardp->udev->dev, "Recv length = 0x%x\n", recvlength); lbs_dev_dbg(1, &cardp->udev->dev, "Receive type = 0x%X\n", recvtype); recvtype = le32_to_cpu(recvtype); lbs_dev_dbg(1, &cardp->udev->dev, "Receive type after = 0x%X\n", recvtype); } else if (urb->status) goto rx_exit; switch (recvtype) { case CMD_TYPE_DATA: process_cmdtypedata(recvlength, skb, cardp, priv); break; case CMD_TYPE_REQUEST: process_cmdrequest(recvlength, recvbuff, skb, cardp, priv); break; case CMD_TYPE_INDICATION: /* Event cause handling */ spin_lock(&priv->adapter->driver_lock); cardp->usb_event_cause = *(u32 *) (recvbuff + MESSAGE_HEADER_LEN); lbs_dev_dbg(1, &cardp->udev->dev,"**EVENT** 0x%X\n", cardp->usb_event_cause); if (cardp->usb_event_cause & 0xffff0000) { libertas_send_tx_feedback(priv); break; } cardp->usb_event_cause = le32_to_cpu(cardp->usb_event_cause) << 3; cardp->usb_int_cause |= his_cardevent; kfree_skb(skb); libertas_interrupt(priv->wlan_dev.netdev); spin_unlock(&priv->adapter->driver_lock); goto rx_exit; default: kfree_skb(skb); break; } setup_for_next: if_usb_submit_rx_urb(priv); rx_exit: LEAVE(); return; } /** * @brief This function downloads data to FW * @param priv pointer to wlan_private structure * @param type type of data * @param buf pointer to data buffer * @param len number of bytes * @return 0 or -1 */ int libertas_sbi_host_to_card(wlan_private * priv, u8 type, u8 * payload, u16 nb) { int ret = -1; u32 tmp; struct usb_card_rec *cardp = (struct usb_card_rec *)priv->wlan_dev.card; lbs_dev_dbg(1, &cardp->udev->dev,"*** type = %u\n", type); lbs_dev_dbg(1, &cardp->udev->dev,"size after = %d\n", nb); if (type == MVMS_CMD) { tmp = cpu_to_le32(CMD_TYPE_REQUEST); priv->wlan_dev.dnld_sent = DNLD_CMD_SENT; memcpy(cardp->bulk_out_buffer, (u8 *) & tmp, MESSAGE_HEADER_LEN); } else { tmp = cpu_to_le32(CMD_TYPE_DATA); priv->wlan_dev.dnld_sent = DNLD_DATA_SENT; memcpy(cardp->bulk_out_buffer, (u8 *) & tmp, MESSAGE_HEADER_LEN); } memcpy((cardp->bulk_out_buffer + MESSAGE_HEADER_LEN), payload, nb); ret = usb_tx_block(priv, cardp->bulk_out_buffer, nb + MESSAGE_HEADER_LEN); return ret; } /* called with adapter->driver_lock held */ int libertas_sbi_get_int_status(wlan_private * priv, u8 * ireg) { struct usb_card_rec *cardp = priv->wlan_dev.card; *ireg = cardp->usb_int_cause; cardp->usb_int_cause = 0; lbs_dev_dbg(1, &cardp->udev->dev,"Int cause is 0x%X\n", *ireg); return 0; } int libertas_sbi_read_event_cause(wlan_private * priv) { struct usb_card_rec *cardp = priv->wlan_dev.card; priv->adapter->eventcause = cardp->usb_event_cause; /* Re-submit rx urb here to avoid event lost issue */ if_usb_submit_rx_urb(priv); return 0; } int reset_device(wlan_private *priv) { int ret; ret = libertas_prepare_and_send_command(priv, cmd_802_11_reset, cmd_act_halt, 0, 0, NULL); msleep_interruptible(10); return ret; } int libertas_sbi_unregister_dev(wlan_private * priv) { int ret = 0; /* Need to send a Reset command to device before USB resources freed * and wlan_remove_card() called, then device can handle FW download * again. */ if (priv) reset_device(priv); return ret; } /** * @brief This function register usb device and initialize parameter * @param priv pointer to wlan_private * @return 0 or -1 */ int libertas_sbi_register_dev(wlan_private * priv) { struct usb_card_rec *cardp = (struct usb_card_rec *)priv->wlan_dev.card; ENTER(); cardp->priv = priv; cardp->eth_dev = priv->wlan_dev.netdev; priv->hotplug_device = &(cardp->udev->dev); SET_NETDEV_DEV(cardp->eth_dev, &(cardp->udev->dev)); lbs_dev_dbg(1, &cardp->udev->dev, "udev pointer is at %p\n", cardp->udev); LEAVE(); return 0; } int libertas_sbi_prog_firmware(wlan_private * priv) { struct usb_card_rec *cardp = priv->wlan_dev.card; int i = 0; static int reset_count = 10; ENTER(); cardp->rinfo.priv = priv; restart: if (if_usb_submit_rx_urb_fwload(priv) < 0) { lbs_dev_dbg(1, &cardp->udev->dev, "URB submission is failed\n"); LEAVE(); return -1; } cardp->bootcmdresp = 0; do { int j = 0; i++; /* Issue Boot command = 1, Boot from Download-FW */ if_usb_issue_boot_command(priv, BOOT_CMD_FW_BY_USB); /* wait for command response */ do { j++; msleep_interruptible(100); } while (cardp->bootcmdresp == 0 && j < 10); } while (cardp->bootcmdresp == 0 && i < 5); if (cardp->bootcmdresp == 0) { if (--reset_count >= 0) { libertas_do_reset(priv); goto restart; } return -1; } i = 0; priv->adapter->fw_ready = 0; cardp->totalbytes = 0; cardp->fwlastblksent = 0; cardp->CRC_OK = 1; cardp->fwdnldover = 0; cardp->fwseqnum = -1; cardp->totalbytes = 0; cardp->fwfinalblk = 0; if_prog_firmware(priv); do { lbs_dev_dbg(1, &cardp->udev->dev,"Wlan sched timeout\n"); i++; msleep_interruptible(100); if (priv->adapter->surpriseremoved || i >= 20) break; } while (!cardp->fwdnldover); if (!cardp->fwdnldover) { lbs_pr_info("failed to load fw, resetting device!\n"); if (--reset_count >= 0) { libertas_do_reset(priv); goto restart; } lbs_pr_info("FW download failure, time = %d ms\n", i * 100); LEAVE(); return -1; } if_usb_submit_rx_urb(priv); /* Delay 200 ms to waiting for the FW ready */ msleep_interruptible(200); priv->adapter->fw_ready = 1; LEAVE(); return 0; } /** * @brief Given a usb_card_rec return its wlan_private * @param card pointer to a usb_card_rec * @return pointer to wlan_private */ wlan_private *libertas_sbi_get_priv(void *card) { struct usb_card_rec *cardp = card; return cardp->priv; } #ifdef ENABLE_PM int libertas_sbi_suspend(wlan_private * priv) { return 0; } int libertas_sbi_resume(wlan_private * priv) { return 0; } #endif #ifdef CONFIG_PM static int if_usb_suspend(struct usb_interface *intf, pm_message_t message) { struct usb_card_rec *cardp = usb_get_intfdata(intf); wlan_private *priv = cardp->priv; ENTER(); if (priv->adapter->psstate != PS_STATE_FULL_POWER) return -1; netif_device_detach(cardp->eth_dev); /* Unlink tx & rx urb */ usb_kill_urb(cardp->tx_urb); usb_kill_urb(cardp->rx_urb); cardp->rx_urb_recall = 1; LEAVE(); return 0; } static int if_usb_resume(struct usb_interface *intf) { struct usb_card_rec *cardp = usb_get_intfdata(intf); ENTER(); cardp->rx_urb_recall = 0; if_usb_submit_rx_urb(cardp->priv); netif_device_attach(cardp->eth_dev); LEAVE(); return 0; } #else #define if_usb_suspend NULL #define if_usb_resume NULL #endif static struct usb_driver if_usb_driver = { /* driver name */ .name = usbdriver_name, /* probe function name */ .probe = if_usb_probe, /* disconnect function name */ .disconnect = if_usb_disconnect, /* device signature table */ .id_table = if_usb_table, .suspend = if_usb_suspend, .resume = if_usb_resume, }; /** * @brief This function registers driver. * @param add pointer to add_card callback function * @param remove pointer to remove card callback function * @param arg pointer to call back function parameter * @return dummy success variable */ int libertas_sbi_register(void) { /* * API registers the Marvell USB driver * to the USB system */ usb_register(&if_usb_driver); /* Return success to wlan layer */ return 0; } /** * @brief This function removes usb driver. * @return N/A */ void libertas_sbi_unregister(void) { /* API unregisters the driver from USB subsystem */ usb_deregister(&if_usb_driver); return; }