/** * This file contains functions used in USB interface module. */ #include #include #include #include #include #include #define DRV_NAME "usb8xxx" #include "host.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 u8 *default_fw_name = "usb8388.bin"; static char *lbs_fw_name; module_param_named(fw_name, lbs_fw_name, charp, 0644); /* * We need to send a RESET command to all USB devices before * we tear down the USB connection. Otherwise we would not * be able to re-init device the device if the module gets * loaded again. This is a list of all initialized USB devices, * for the reset code see if_usb_reset_device() */ static LIST_HEAD(usb_devices); static struct usb_device_id if_usb_table[] = { /* Enter the device signature inside */ { USB_DEVICE(0x1286, 0x2001) }, { USB_DEVICE(0x05a3, 0x8388) }, {} /* 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); static int if_usb_prog_firmware(struct usb_card_rec *cardp); static int if_usb_host_to_card(lbs_private *priv, u8 type, u8 *payload, u16 nb); static int if_usb_get_int_status(lbs_private *priv, u8 *); static int if_usb_read_event_cause(lbs_private *); static int usb_tx_block(struct usb_card_rec *cardp, u8 *payload, u16 nb); static void if_usb_free(struct usb_card_rec *cardp); static int if_usb_submit_rx_urb(struct usb_card_rec *cardp); static int if_usb_reset_device(struct usb_card_rec *cardp); /** * @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) { struct usb_card_rec *cardp = (struct usb_card_rec *) urb->context; /* handle the transmission complete validations */ if (urb->status == 0) { lbs_private *priv = cardp->priv; /* lbs_deb_usbd(&urb->dev->dev, "URB status is successfull\n"); lbs_deb_usbd(&urb->dev->dev, "Actual length transmitted %d\n", urb->actual_length); */ /* Used for both firmware TX and regular TX. priv isn't * valid at firmware load time. */ if (priv) { lbs_adapter *adapter = priv->adapter; struct net_device *dev = priv->dev; priv->dnld_sent = DNLD_RES_RECEIVED; /* Wake main thread if commands are pending */ if (!adapter->cur_cmd) wake_up_interruptible(&priv->waitq); if ((adapter->connect_status == LBS_CONNECTED)) { netif_wake_queue(dev); netif_wake_queue(priv->mesh_dev); } } } else { /* print the failure status number for debug */ lbs_pr_info("URB in failure status: %d\n", urb->status); } return; } /** * @brief free tx/rx urb, skb and rx buffer * @param cardp pointer usb_card_rec * @return N/A */ static void if_usb_free(struct usb_card_rec *cardp) { lbs_deb_enter(LBS_DEB_USB); /* 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; lbs_deb_leave(LBS_DEB_USB); } /** * @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; lbs_private *priv; struct usb_card_rec *cardp; int i; udev = interface_to_usbdev(intf); cardp = kzalloc(sizeof(struct usb_card_rec), GFP_KERNEL); if (!cardp) { lbs_pr_err("Out of memory allocating private data.\n"); goto error; } cardp->udev = udev; iface_desc = intf->cur_altsetting; lbs_deb_usbd(&udev->dev, "bcdUSB = 0x%X bDeviceClass = 0x%X" " bDeviceSubClass = 0x%X, bDeviceProtocol = 0x%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) { 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_deb_usbd(&udev->dev, "Bulk in size is %d\n", le16_to_cpu(endpoint->wMaxPacketSize)); if (!(cardp->rx_urb = usb_alloc_urb(0, GFP_KERNEL))) { lbs_deb_usbd(&udev->dev, "Rx URB allocation failed\n"); goto dealloc; } cardp->rx_urb_recall = 0; cardp->bulk_in_size = le16_to_cpu(endpoint->wMaxPacketSize); cardp->bulk_in_endpointAddr = (endpoint-> bEndpointAddress & USB_ENDPOINT_NUMBER_MASK); lbs_deb_usbd(&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 (!(cardp->tx_urb = usb_alloc_urb(0, GFP_KERNEL))) { lbs_deb_usbd(&udev->dev, "Tx URB allocation failed\n"); goto dealloc; } cardp->bulk_out_size = le16_to_cpu(endpoint->wMaxPacketSize); lbs_deb_usbd(&udev->dev, "Bulk out size is %d\n", le16_to_cpu(endpoint->wMaxPacketSize)); cardp->bulk_out_endpointAddr = endpoint->bEndpointAddress; lbs_deb_usbd(&udev->dev, "out_endpoint = %d\n", endpoint->bEndpointAddress); cardp->bulk_out_buffer = kmalloc(MRVDRV_ETH_TX_PACKET_BUFFER_SIZE, GFP_KERNEL); if (!cardp->bulk_out_buffer) { lbs_deb_usbd(&udev->dev, "Could not allocate buffer\n"); goto dealloc; } } } /* Upload firmware */ cardp->rinfo.cardp = cardp; if (if_usb_prog_firmware(cardp)) { lbs_deb_usbd(&udev->dev, "FW upload failed"); goto err_prog_firmware; } if (!(priv = lbs_add_card(cardp, &udev->dev))) goto err_prog_firmware; cardp->priv = priv; if (lbs_add_mesh(priv, &udev->dev)) goto err_add_mesh; cardp->eth_dev = priv->dev; priv->hw_host_to_card = if_usb_host_to_card; priv->hw_get_int_status = if_usb_get_int_status; priv->hw_read_event_cause = if_usb_read_event_cause; priv->boot2_version = udev->descriptor.bcdDevice; /* Delay 200 ms to waiting for the FW ready */ if_usb_submit_rx_urb(cardp); msleep_interruptible(200); priv->adapter->fw_ready = 1; if (lbs_start_card(priv)) goto err_start_card; list_add_tail(&cardp->list, &usb_devices); usb_get_dev(udev); usb_set_intfdata(intf, cardp); return 0; err_start_card: lbs_remove_mesh(priv); err_add_mesh: lbs_remove_card(priv); err_prog_firmware: if_usb_reset_device(cardp); dealloc: if_usb_free(cardp); error: return -ENOMEM; } /** * @brief free resource and cleanup * @param intf USB interface structure * @return N/A */ static void if_usb_disconnect(struct usb_interface *intf) { struct usb_card_rec *cardp = usb_get_intfdata(intf); lbs_private *priv = (lbs_private *) cardp->priv; lbs_deb_enter(LBS_DEB_MAIN); /* Update Surprise removed to TRUE */ cardp->surprise_removed = 1; list_del(&cardp->list); if (priv) { lbs_adapter *adapter = priv->adapter; adapter->surpriseremoved = 1; lbs_stop_card(priv); lbs_remove_mesh(priv); lbs_remove_card(priv); } /* Unlink and free urb */ if_usb_free(cardp); usb_set_intfdata(intf, NULL); usb_put_dev(interface_to_usbdev(intf)); lbs_deb_leave(LBS_DEB_MAIN); } /** * @brief This function download FW * @param priv pointer to lbs_private * @return 0 */ static int if_prog_firmware(struct usb_card_rec *cardp) { struct FWData *fwdata; struct fwheader *fwheader; u8 *firmware = cardp->fw->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_deb_usbd(&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_deb_usbd(&cardp->udev->dev,"Copy Data\n"); */ memcpy(fwdata->data, &firmware[cardp->totalbytes], le32_to_cpu(fwdata->fwheader.datalength)); /* lbs_deb_usbd(&cardp->udev->dev, "Data length = %d\n", le32_to_cpu(fwdata->fwheader.datalength)); */ cardp->fwseqnum = cardp->fwseqnum + 1; fwdata->seqnum = cpu_to_le32(cardp->fwseqnum); cardp->lastseqnum = cardp->fwseqnum; cardp->totalbytes += le32_to_cpu(fwdata->fwheader.datalength); if (fwheader->dnldcmd == cpu_to_le32(FW_HAS_DATA_TO_RECV)) { /* lbs_deb_usbd(&cardp->udev->dev, "There are data to follow\n"); lbs_deb_usbd(&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(cardp, cardp->bulk_out_buffer, FW_DATA_XMIT_SIZE); } else if (fwdata->fwheader.dnldcmd == cpu_to_le32(FW_HAS_LAST_BLOCK)) { /* lbs_deb_usbd(&cardp->udev->dev, "Host has finished FW downloading\n"); lbs_deb_usbd(&cardp->udev->dev, "Donwloading FW JUMP BLOCK\n"); */ memcpy(cardp->bulk_out_buffer, fwheader, FW_DATA_XMIT_SIZE); usb_tx_block(cardp, cardp->bulk_out_buffer, FW_DATA_XMIT_SIZE); cardp->fwfinalblk = 1; } /* lbs_deb_usbd(&cardp->udev->dev, "The firmware download is done size is %d\n", cardp->totalbytes); */ kfree(fwdata); return 0; } static int if_usb_reset_device(struct usb_card_rec *cardp) { int ret; lbs_private * priv = cardp->priv; lbs_deb_enter(LBS_DEB_USB); /* Try a USB port reset first, if that fails send the reset * command to the firmware. */ ret = usb_reset_device(cardp->udev); if (!ret && priv) { msleep(10); ret = lbs_reset_device(priv); msleep(10); } lbs_deb_leave_args(LBS_DEB_USB, "ret %d", ret); return ret; } /** * @brief This function transfer the data to the device. * @param priv pointer to lbs_private * @param payload pointer to payload data * @param nb data length * @return 0 or -1 */ static int usb_tx_block(struct usb_card_rec *cardp, u8 * payload, u16 nb) { int ret = -1; /* check if device is removed */ if (cardp->surprise_removed) { lbs_deb_usbd(&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, cardp); cardp->tx_urb->transfer_flags |= URB_ZERO_PACKET; if ((ret = usb_submit_urb(cardp->tx_urb, GFP_ATOMIC))) { /* transfer failed */ lbs_deb_usbd(&cardp->udev->dev, "usb_submit_urb failed\n"); ret = -1; } else { /* lbs_deb_usbd(&cardp->udev->dev, "usb_submit_urb success\n"); */ ret = 0; } tx_ret: return ret; } static int __if_usb_submit_rx_urb(struct usb_card_rec *cardp, void (*callbackfn)(struct urb *urb)) { 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), (void *) (skb->tail + (size_t) IPFIELD_ALIGN_OFFSET), MRVDRV_ETH_RX_PACKET_BUFFER_SIZE, callbackfn, rinfo); cardp->rx_urb->transfer_flags |= URB_ZERO_PACKET; /* lbs_deb_usbd(&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_deb_usbd(&cardp->udev->dev, "Submit Rx URB failed\n"); ret = -1; } else { /* lbs_deb_usbd(&cardp->udev->dev, "Submit Rx URB success\n"); */ ret = 0; } rx_ret: return ret; } static int if_usb_submit_rx_urb_fwload(struct usb_card_rec *cardp) { return __if_usb_submit_rx_urb(cardp, &if_usb_receive_fwload); } static int if_usb_submit_rx_urb(struct usb_card_rec *cardp) { return __if_usb_submit_rx_urb(cardp, &if_usb_receive); } static void if_usb_receive_fwload(struct urb *urb) { struct read_cb_info *rinfo = (struct read_cb_info *)urb->context; struct sk_buff *skb = rinfo->skb; struct usb_card_rec *cardp = (struct usb_card_rec *)rinfo->cardp; struct fwsyncheader *syncfwheader; struct bootcmdrespStr bootcmdresp; if (urb->status) { lbs_deb_usbd(&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 (le16_to_cpu(cardp->udev->descriptor.bcdDevice) < 0x3106) { kfree_skb(skb); if_usb_submit_rx_urb_fwload(cardp); cardp->bootcmdresp = 1; lbs_deb_usbd(&cardp->udev->dev, "Received valid boot command response\n"); return; } if (bootcmdresp.u32magicnumber != cpu_to_le32(BOOT_CMD_MAGIC_NUMBER)) { lbs_pr_info( "boot cmd response wrong magic number (0x%x)\n", le32_to_cpu(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_deb_usbd(&cardp->udev->dev, "Received valid boot command response\n"); } kfree_skb(skb); if_usb_submit_rx_urb_fwload(cardp); return; } syncfwheader = kmalloc(sizeof(struct fwsyncheader), GFP_ATOMIC); if (!syncfwheader) { lbs_deb_usbd(&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_deb_usbd(&cardp->udev->dev, "FW received Blk with correct CRC\n"); lbs_deb_usbd(&cardp->udev->dev, "FW received Blk seqnum = %d\n", syncfwheader->seqnum); */ cardp->CRC_OK = 1; } else { lbs_deb_usbd(&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(cardp); if_usb_submit_rx_urb_fwload(cardp); 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, lbs_private *priv) { if (recvlength > MRVDRV_ETH_RX_PACKET_BUFFER_SIZE + MESSAGE_HEADER_LEN || recvlength < MRVDRV_MIN_PKT_LEN) { lbs_deb_usbd(&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); lbs_process_rxed_packet(priv, skb); priv->upld_len = (recvlength - MESSAGE_HEADER_LEN); } static inline void process_cmdrequest(int recvlength, u8 *recvbuff, struct sk_buff *skb, struct usb_card_rec *cardp, lbs_private *priv) { u8 *cmdbuf; if (recvlength > MRVDRV_SIZE_OF_CMD_BUFFER) { lbs_deb_usbd(&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->upld_buf; priv->adapter->hisregcpy &= ~MRVDRV_CMD_UPLD_RDY; } else cmdbuf = priv->adapter->cur_cmd->bufvirtualaddr; cardp->usb_int_cause |= MRVDRV_CMD_UPLD_RDY; priv->upld_len = (recvlength - MESSAGE_HEADER_LEN); memcpy(cmdbuf, recvbuff + MESSAGE_HEADER_LEN, priv->upld_len); kfree_skb(skb); lbs_interrupt(priv->dev); spin_unlock(&priv->adapter->driver_lock); lbs_deb_usbd(&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; struct sk_buff *skb = rinfo->skb; struct usb_card_rec *cardp = (struct usb_card_rec *) rinfo->cardp; lbs_private * priv = cardp->priv; int recvlength = urb->actual_length; u8 *recvbuff = NULL; u32 recvtype = 0; lbs_deb_enter(LBS_DEB_USB); if (recvlength) { __le32 tmp; if (urb->status) { lbs_deb_usbd(&cardp->udev->dev, "URB status is failed\n"); kfree_skb(skb); goto setup_for_next; } recvbuff = skb->data + IPFIELD_ALIGN_OFFSET; memcpy(&tmp, recvbuff, sizeof(u32)); recvtype = le32_to_cpu(tmp); lbs_deb_usbd(&cardp->udev->dev, "Recv length = 0x%x, Recv type = 0x%X\n", recvlength, 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 = le32_to_cpu(*(__le32 *) (recvbuff + MESSAGE_HEADER_LEN)); lbs_deb_usbd(&cardp->udev->dev,"**EVENT** 0x%X\n", cardp->usb_event_cause); if (cardp->usb_event_cause & 0xffff0000) { lbs_send_tx_feedback(priv); spin_unlock(&priv->adapter->driver_lock); break; } cardp->usb_event_cause <<= 3; cardp->usb_int_cause |= MRVDRV_CARDEVENT; kfree_skb(skb); lbs_interrupt(priv->dev); spin_unlock(&priv->adapter->driver_lock); goto rx_exit; default: lbs_deb_usbd(&cardp->udev->dev, "Unknown command type 0x%X\n", recvtype); kfree_skb(skb); break; } setup_for_next: if_usb_submit_rx_urb(cardp); rx_exit: lbs_deb_leave(LBS_DEB_USB); } /** * @brief This function downloads data to FW * @param priv pointer to lbs_private structure * @param type type of data * @param buf pointer to data buffer * @param len number of bytes * @return 0 or -1 */ static int if_usb_host_to_card(lbs_private *priv, u8 type, u8 *payload, u16 nb) { struct usb_card_rec *cardp = (struct usb_card_rec *)priv->card; lbs_deb_usbd(&cardp->udev->dev,"*** type = %u\n", type); lbs_deb_usbd(&cardp->udev->dev,"size after = %d\n", nb); if (type == MVMS_CMD) { __le32 tmp = cpu_to_le32(CMD_TYPE_REQUEST); priv->dnld_sent = DNLD_CMD_SENT; memcpy(cardp->bulk_out_buffer, (u8 *) & tmp, MESSAGE_HEADER_LEN); } else { __le32 tmp = cpu_to_le32(CMD_TYPE_DATA); priv->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); return usb_tx_block(cardp, cardp->bulk_out_buffer, nb + MESSAGE_HEADER_LEN); } /* called with adapter->driver_lock held */ static int if_usb_get_int_status(lbs_private *priv, u8 *ireg) { struct usb_card_rec *cardp = priv->card; *ireg = cardp->usb_int_cause; cardp->usb_int_cause = 0; lbs_deb_usbd(&cardp->udev->dev,"Int cause is 0x%X\n", *ireg); return 0; } static int if_usb_read_event_cause(lbs_private * priv) { struct usb_card_rec *cardp = priv->card; priv->adapter->eventcause = cardp->usb_event_cause; /* Re-submit rx urb here to avoid event lost issue */ if_usb_submit_rx_urb(cardp); return 0; } /** * @brief This function issues Boot command to the Boot2 code * @param ivalue 1:Boot from FW by USB-Download * 2:Boot from FW in EEPROM * @return 0 */ static int if_usb_issue_boot_command(struct usb_card_rec *cardp, int ivalue) { struct bootcmdstr sbootcmd; int i; /* Prepare command */ sbootcmd.u32magicnumber = cpu_to_le32(BOOT_CMD_MAGIC_NUMBER); sbootcmd.u8cmd_tag = ivalue; for (i=0; i<11; i++) sbootcmd.au8dumy[i]=0x00; memcpy(cardp->bulk_out_buffer, &sbootcmd, sizeof(struct bootcmdstr)); /* Issue command */ usb_tx_block(cardp, cardp->bulk_out_buffer, sizeof(struct bootcmdstr)); return 0; } /** * @brief This function checks the validity of Boot2/FW image. * * @param data pointer to image * len image length * @return 0 or -1 */ static int check_fwfile_format(u8 *data, u32 totlen) { u32 bincmd, exit; u32 blksize, offset, len; int ret; ret = 1; exit = len = 0; do { struct fwheader *fwh = (void *)data; bincmd = le32_to_cpu(fwh->dnldcmd); blksize = le32_to_cpu(fwh->datalength); switch (bincmd) { case FW_HAS_DATA_TO_RECV: offset = sizeof(struct fwheader) + blksize; data += offset; len += offset; if (len >= totlen) exit = 1; break; case FW_HAS_LAST_BLOCK: exit = 1; ret = 0; break; default: exit = 1; break; } } while (!exit); if (ret) lbs_pr_err("firmware file format check FAIL\n"); else lbs_deb_fw("firmware file format check PASS\n"); return ret; } static int if_usb_prog_firmware(struct usb_card_rec *cardp) { int i = 0; static int reset_count = 10; int ret = 0; lbs_deb_enter(LBS_DEB_USB); if ((ret = request_firmware(&cardp->fw, lbs_fw_name, &cardp->udev->dev)) < 0) { lbs_pr_err("request_firmware() failed with %#x\n", ret); lbs_pr_err("firmware %s not found\n", lbs_fw_name); goto done; } if (check_fwfile_format(cardp->fw->data, cardp->fw->size)) goto release_fw; restart: if (if_usb_submit_rx_urb_fwload(cardp) < 0) { lbs_deb_usbd(&cardp->udev->dev, "URB submission is failed\n"); ret = -1; goto release_fw; } cardp->bootcmdresp = 0; do { int j = 0; i++; /* Issue Boot command = 1, Boot from Download-FW */ if_usb_issue_boot_command(cardp, 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) { if_usb_reset_device(cardp); goto restart; } return -1; } i = 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(cardp); do { lbs_deb_usbd(&cardp->udev->dev,"Wlan sched timeout\n"); i++; msleep_interruptible(100); if (cardp->surprise_removed || i >= 20) break; } while (!cardp->fwdnldover); if (!cardp->fwdnldover) { lbs_pr_info("failed to load fw, resetting device!\n"); if (--reset_count >= 0) { if_usb_reset_device(cardp); goto restart; } lbs_pr_info("FW download failure, time = %d ms\n", i * 100); ret = -1; goto release_fw; } release_fw: release_firmware(cardp->fw); cardp->fw = NULL; done: lbs_deb_leave_args(LBS_DEB_USB, "ret %d", ret); return ret; } #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); lbs_private *priv = cardp->priv; lbs_deb_enter(LBS_DEB_USB); if (priv->adapter->psstate != PS_STATE_FULL_POWER) return -1; if (priv->mesh_dev && !priv->mesh_autostart_enabled) { /* Mesh autostart must be activated while sleeping * On resume it will go back to the current state */ struct cmd_ds_mesh_access mesh_access; memset(&mesh_access, 0, sizeof(mesh_access)); mesh_access.data[0] = cpu_to_le32(1); lbs_prepare_and_send_command(priv, CMD_MESH_ACCESS, CMD_ACT_MESH_SET_AUTOSTART_ENABLED, CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access); } netif_device_detach(cardp->eth_dev); netif_device_detach(priv->mesh_dev); /* Unlink tx & rx urb */ usb_kill_urb(cardp->tx_urb); usb_kill_urb(cardp->rx_urb); cardp->rx_urb_recall = 1; lbs_deb_leave(LBS_DEB_USB); return 0; } static int if_usb_resume(struct usb_interface *intf) { struct usb_card_rec *cardp = usb_get_intfdata(intf); lbs_private *priv = cardp->priv; lbs_deb_enter(LBS_DEB_USB); cardp->rx_urb_recall = 0; if_usb_submit_rx_urb(cardp->priv); netif_device_attach(cardp->eth_dev); netif_device_attach(priv->mesh_dev); if (priv->mesh_dev && !priv->mesh_autostart_enabled) { /* Mesh autostart was activated while sleeping * Disable it if appropriate */ struct cmd_ds_mesh_access mesh_access; memset(&mesh_access, 0, sizeof(mesh_access)); mesh_access.data[0] = cpu_to_le32(0); lbs_prepare_and_send_command(priv, CMD_MESH_ACCESS, CMD_ACT_MESH_SET_AUTOSTART_ENABLED, CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access); } lbs_deb_leave(LBS_DEB_USB); 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, }; static int if_usb_init_module(void) { int ret = 0; lbs_deb_enter(LBS_DEB_MAIN); if (lbs_fw_name == NULL) { lbs_fw_name = default_fw_name; } ret = usb_register(&if_usb_driver); lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret); return ret; } static void if_usb_exit_module(void) { struct usb_card_rec *cardp, *cardp_temp; lbs_deb_enter(LBS_DEB_MAIN); list_for_each_entry_safe(cardp, cardp_temp, &usb_devices, list) { lbs_prepare_and_send_command(cardp->priv, CMD_802_11_RESET, CMD_ACT_HALT, 0, 0, NULL); } /* API unregisters the driver from USB subsystem */ usb_deregister(&if_usb_driver); lbs_deb_leave(LBS_DEB_MAIN); } module_init(if_usb_init_module); module_exit(if_usb_exit_module); MODULE_DESCRIPTION("8388 USB WLAN Driver"); MODULE_AUTHOR("Marvell International Ltd."); MODULE_LICENSE("GPL");