| /* |
| * Copyright (C) 2008, cozybit Inc. |
| * Copyright (C) 2003-2006, Marvell International Ltd. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or (at |
| * your option) any later version. |
| */ |
| #define DRV_NAME "lbtf_usb" |
| |
| #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| |
| #include "libertas_tf.h" |
| #include "if_usb.h" |
| |
| #include <linux/delay.h> |
| #include <linux/module.h> |
| #include <linux/firmware.h> |
| #include <linux/netdevice.h> |
| #include <linux/slab.h> |
| #include <linux/usb.h> |
| |
| #define INSANEDEBUG 0 |
| #define lbtf_deb_usb2(...) do { if (INSANEDEBUG) lbtf_deb_usbd(__VA_ARGS__); } while (0) |
| |
| #define MESSAGE_HEADER_LEN 4 |
| |
| static char *lbtf_fw_name = "lbtf_usb.bin"; |
| module_param_named(fw_name, lbtf_fw_name, charp, 0644); |
| |
| MODULE_FIRMWARE("lbtf_usb.bin"); |
| |
| 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 if_usb_card *cardp); |
| static int if_usb_host_to_card(struct lbtf_private *priv, uint8_t type, |
| uint8_t *payload, uint16_t nb); |
| static int usb_tx_block(struct if_usb_card *cardp, uint8_t *payload, |
| uint16_t nb, u8 data); |
| static void if_usb_free(struct if_usb_card *cardp); |
| static int if_usb_submit_rx_urb(struct if_usb_card *cardp); |
| static int if_usb_reset_device(struct if_usb_card *cardp); |
| |
| /** |
| * if_usb_wrike_bulk_callback - call back to handle URB status |
| * |
| * @param urb pointer to urb structure |
| */ |
| static void if_usb_write_bulk_callback(struct urb *urb) |
| { |
| if (urb->status != 0) { |
| /* print the failure status number for debug */ |
| pr_info("URB in failure status: %d\n", urb->status); |
| } else { |
| lbtf_deb_usb2(&urb->dev->dev, "URB status is successful\n"); |
| lbtf_deb_usb2(&urb->dev->dev, "Actual length transmitted %d\n", |
| urb->actual_length); |
| } |
| } |
| |
| /** |
| * if_usb_free - free tx/rx urb, skb and rx buffer |
| * |
| * @param cardp pointer if_usb_card |
| */ |
| static void if_usb_free(struct if_usb_card *cardp) |
| { |
| lbtf_deb_enter(LBTF_DEB_USB); |
| |
| /* Unlink tx & rx urb */ |
| usb_kill_urb(cardp->tx_urb); |
| usb_kill_urb(cardp->rx_urb); |
| usb_kill_urb(cardp->cmd_urb); |
| |
| usb_free_urb(cardp->tx_urb); |
| cardp->tx_urb = NULL; |
| |
| usb_free_urb(cardp->rx_urb); |
| cardp->rx_urb = NULL; |
| |
| usb_free_urb(cardp->cmd_urb); |
| cardp->cmd_urb = NULL; |
| |
| kfree(cardp->ep_out_buf); |
| cardp->ep_out_buf = NULL; |
| |
| lbtf_deb_leave(LBTF_DEB_USB); |
| } |
| |
| static void if_usb_setup_firmware(struct lbtf_private *priv) |
| { |
| struct if_usb_card *cardp = priv->card; |
| struct cmd_ds_set_boot2_ver b2_cmd; |
| |
| lbtf_deb_enter(LBTF_DEB_USB); |
| |
| if_usb_submit_rx_urb(cardp); |
| b2_cmd.hdr.size = cpu_to_le16(sizeof(b2_cmd)); |
| b2_cmd.action = 0; |
| b2_cmd.version = cardp->boot2_version; |
| |
| if (lbtf_cmd_with_response(priv, CMD_SET_BOOT2_VER, &b2_cmd)) |
| lbtf_deb_usb("Setting boot2 version failed\n"); |
| |
| lbtf_deb_leave(LBTF_DEB_USB); |
| } |
| |
| static void if_usb_fw_timeo(unsigned long priv) |
| { |
| struct if_usb_card *cardp = (void *)priv; |
| |
| lbtf_deb_enter(LBTF_DEB_USB); |
| if (!cardp->fwdnldover) { |
| /* Download timed out */ |
| cardp->priv->surpriseremoved = 1; |
| pr_err("Download timed out\n"); |
| } else { |
| lbtf_deb_usb("Download complete, no event. Assuming success\n"); |
| } |
| wake_up(&cardp->fw_wq); |
| lbtf_deb_leave(LBTF_DEB_USB); |
| } |
| |
| /** |
| * if_usb_probe - sets the configuration values |
| * |
| * @ifnum interface number |
| * @id pointer to usb_device_id |
| * |
| * Returns: 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; |
| struct lbtf_private *priv; |
| struct if_usb_card *cardp; |
| int i; |
| |
| lbtf_deb_enter(LBTF_DEB_USB); |
| udev = interface_to_usbdev(intf); |
| |
| cardp = kzalloc(sizeof(struct if_usb_card), GFP_KERNEL); |
| if (!cardp) |
| goto error; |
| |
| setup_timer(&cardp->fw_timeout, if_usb_fw_timeo, (unsigned long)cardp); |
| init_waitqueue_head(&cardp->fw_wq); |
| |
| cardp->udev = udev; |
| iface_desc = intf->cur_altsetting; |
| |
| lbtf_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 (usb_endpoint_is_bulk_in(endpoint)) { |
| cardp->ep_in_size = |
| le16_to_cpu(endpoint->wMaxPacketSize); |
| cardp->ep_in = usb_endpoint_num(endpoint); |
| |
| lbtf_deb_usbd(&udev->dev, "in_endpoint = %d\n", |
| cardp->ep_in); |
| lbtf_deb_usbd(&udev->dev, "Bulk in size is %d\n", |
| cardp->ep_in_size); |
| } else if (usb_endpoint_is_bulk_out(endpoint)) { |
| cardp->ep_out_size = |
| le16_to_cpu(endpoint->wMaxPacketSize); |
| cardp->ep_out = usb_endpoint_num(endpoint); |
| |
| lbtf_deb_usbd(&udev->dev, "out_endpoint = %d\n", |
| cardp->ep_out); |
| lbtf_deb_usbd(&udev->dev, "Bulk out size is %d\n", |
| cardp->ep_out_size); |
| } |
| } |
| if (!cardp->ep_out_size || !cardp->ep_in_size) { |
| lbtf_deb_usbd(&udev->dev, "Endpoints not found\n"); |
| /* Endpoints not found */ |
| goto dealloc; |
| } |
| |
| cardp->rx_urb = usb_alloc_urb(0, GFP_KERNEL); |
| if (!cardp->rx_urb) { |
| lbtf_deb_usbd(&udev->dev, "Rx URB allocation failed\n"); |
| goto dealloc; |
| } |
| |
| cardp->tx_urb = usb_alloc_urb(0, GFP_KERNEL); |
| if (!cardp->tx_urb) { |
| lbtf_deb_usbd(&udev->dev, "Tx URB allocation failed\n"); |
| goto dealloc; |
| } |
| |
| cardp->cmd_urb = usb_alloc_urb(0, GFP_KERNEL); |
| if (!cardp->cmd_urb) { |
| lbtf_deb_usbd(&udev->dev, "Cmd URB allocation failed\n"); |
| goto dealloc; |
| } |
| |
| cardp->ep_out_buf = kmalloc(MRVDRV_ETH_TX_PACKET_BUFFER_SIZE, |
| GFP_KERNEL); |
| if (!cardp->ep_out_buf) { |
| lbtf_deb_usbd(&udev->dev, "Could not allocate buffer\n"); |
| goto dealloc; |
| } |
| |
| priv = lbtf_add_card(cardp, &udev->dev); |
| if (!priv) |
| goto dealloc; |
| |
| cardp->priv = priv; |
| |
| priv->hw_host_to_card = if_usb_host_to_card; |
| priv->hw_prog_firmware = if_usb_prog_firmware; |
| priv->hw_reset_device = if_usb_reset_device; |
| cardp->boot2_version = udev->descriptor.bcdDevice; |
| |
| usb_get_dev(udev); |
| usb_set_intfdata(intf, cardp); |
| |
| return 0; |
| |
| dealloc: |
| if_usb_free(cardp); |
| error: |
| lbtf_deb_leave(LBTF_DEB_MAIN); |
| return -ENOMEM; |
| } |
| |
| /** |
| * if_usb_disconnect - free resource and cleanup |
| * |
| * @intf USB interface structure |
| */ |
| static void if_usb_disconnect(struct usb_interface *intf) |
| { |
| struct if_usb_card *cardp = usb_get_intfdata(intf); |
| struct lbtf_private *priv = cardp->priv; |
| |
| lbtf_deb_enter(LBTF_DEB_MAIN); |
| |
| if_usb_reset_device(cardp); |
| |
| if (priv) |
| lbtf_remove_card(priv); |
| |
| /* Unlink and free urb */ |
| if_usb_free(cardp); |
| |
| usb_set_intfdata(intf, NULL); |
| usb_put_dev(interface_to_usbdev(intf)); |
| |
| lbtf_deb_leave(LBTF_DEB_MAIN); |
| } |
| |
| /** |
| * if_usb_send_fw_pkt - This function downloads the FW |
| * |
| * @priv pointer to struct lbtf_private |
| * |
| * Returns: 0 |
| */ |
| static int if_usb_send_fw_pkt(struct if_usb_card *cardp) |
| { |
| struct fwdata *fwdata = cardp->ep_out_buf; |
| u8 *firmware = (u8 *) cardp->fw->data; |
| |
| lbtf_deb_enter(LBTF_DEB_FW); |
| |
| /* If we got a CRC failure on the last block, back |
| up and retry it */ |
| if (!cardp->CRC_OK) { |
| cardp->totalbytes = cardp->fwlastblksent; |
| cardp->fwseqnum--; |
| } |
| |
| lbtf_deb_usb2(&cardp->udev->dev, "totalbytes = %d\n", |
| cardp->totalbytes); |
| |
| /* struct fwdata (which we sent to the card) has an |
| extra __le32 field in between the header and the data, |
| which is not in the struct fwheader in the actual |
| firmware binary. Insert the seqnum in the middle... */ |
| memcpy(&fwdata->hdr, &firmware[cardp->totalbytes], |
| sizeof(struct fwheader)); |
| |
| cardp->fwlastblksent = cardp->totalbytes; |
| cardp->totalbytes += sizeof(struct fwheader); |
| |
| memcpy(fwdata->data, &firmware[cardp->totalbytes], |
| le32_to_cpu(fwdata->hdr.datalength)); |
| |
| lbtf_deb_usb2(&cardp->udev->dev, "Data length = %d\n", |
| le32_to_cpu(fwdata->hdr.datalength)); |
| |
| fwdata->seqnum = cpu_to_le32(++cardp->fwseqnum); |
| cardp->totalbytes += le32_to_cpu(fwdata->hdr.datalength); |
| |
| usb_tx_block(cardp, cardp->ep_out_buf, sizeof(struct fwdata) + |
| le32_to_cpu(fwdata->hdr.datalength), 0); |
| |
| if (fwdata->hdr.dnldcmd == cpu_to_le32(FW_HAS_DATA_TO_RECV)) { |
| lbtf_deb_usb2(&cardp->udev->dev, "There are data to follow\n"); |
| lbtf_deb_usb2(&cardp->udev->dev, |
| "seqnum = %d totalbytes = %d\n", |
| cardp->fwseqnum, cardp->totalbytes); |
| } else if (fwdata->hdr.dnldcmd == cpu_to_le32(FW_HAS_LAST_BLOCK)) { |
| lbtf_deb_usb2(&cardp->udev->dev, |
| "Host has finished FW downloading\n"); |
| lbtf_deb_usb2(&cardp->udev->dev, "Donwloading FW JUMP BLOCK\n"); |
| |
| /* Host has finished FW downloading |
| * Donwloading FW JUMP BLOCK |
| */ |
| cardp->fwfinalblk = 1; |
| } |
| |
| lbtf_deb_usb2(&cardp->udev->dev, "Firmware download done; size %d\n", |
| cardp->totalbytes); |
| |
| lbtf_deb_leave(LBTF_DEB_FW); |
| return 0; |
| } |
| |
| static int if_usb_reset_device(struct if_usb_card *cardp) |
| { |
| struct cmd_ds_802_11_reset *cmd = cardp->ep_out_buf + 4; |
| int ret; |
| |
| lbtf_deb_enter(LBTF_DEB_USB); |
| |
| *(__le32 *)cardp->ep_out_buf = cpu_to_le32(CMD_TYPE_REQUEST); |
| |
| cmd->hdr.command = cpu_to_le16(CMD_802_11_RESET); |
| cmd->hdr.size = cpu_to_le16(sizeof(struct cmd_ds_802_11_reset)); |
| cmd->hdr.result = cpu_to_le16(0); |
| cmd->hdr.seqnum = cpu_to_le16(0x5a5a); |
| cmd->action = cpu_to_le16(CMD_ACT_HALT); |
| usb_tx_block(cardp, cardp->ep_out_buf, |
| 4 + sizeof(struct cmd_ds_802_11_reset), 0); |
| |
| msleep(100); |
| ret = usb_reset_device(cardp->udev); |
| msleep(100); |
| |
| lbtf_deb_leave_args(LBTF_DEB_USB, "ret %d", ret); |
| |
| return ret; |
| } |
| |
| /** |
| * usb_tx_block - transfer data to the device |
| * |
| * @priv pointer to struct lbtf_private |
| * @payload pointer to payload data |
| * @nb data length |
| * @data non-zero for data, zero for commands |
| * |
| * Returns: 0 on success, nonzero otherwise. |
| */ |
| static int usb_tx_block(struct if_usb_card *cardp, uint8_t *payload, |
| uint16_t nb, u8 data) |
| { |
| int ret = -1; |
| struct urb *urb; |
| |
| lbtf_deb_enter(LBTF_DEB_USB); |
| /* check if device is removed */ |
| if (cardp->priv->surpriseremoved) { |
| lbtf_deb_usbd(&cardp->udev->dev, "Device removed\n"); |
| goto tx_ret; |
| } |
| |
| if (data) |
| urb = cardp->tx_urb; |
| else |
| urb = cardp->cmd_urb; |
| |
| usb_fill_bulk_urb(urb, cardp->udev, |
| usb_sndbulkpipe(cardp->udev, |
| cardp->ep_out), |
| payload, nb, if_usb_write_bulk_callback, cardp); |
| |
| urb->transfer_flags |= URB_ZERO_PACKET; |
| |
| if (usb_submit_urb(urb, GFP_ATOMIC)) { |
| lbtf_deb_usbd(&cardp->udev->dev, |
| "usb_submit_urb failed: %d\n", ret); |
| goto tx_ret; |
| } |
| |
| lbtf_deb_usb2(&cardp->udev->dev, "usb_submit_urb success\n"); |
| |
| ret = 0; |
| |
| tx_ret: |
| lbtf_deb_leave(LBTF_DEB_USB); |
| return ret; |
| } |
| |
| static int __if_usb_submit_rx_urb(struct if_usb_card *cardp, |
| void (*callbackfn)(struct urb *urb)) |
| { |
| struct sk_buff *skb; |
| int ret = -1; |
| |
| lbtf_deb_enter(LBTF_DEB_USB); |
| |
| skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE); |
| if (!skb) { |
| pr_err("No free skb\n"); |
| lbtf_deb_leave(LBTF_DEB_USB); |
| return -1; |
| } |
| |
| cardp->rx_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->ep_in), |
| skb_tail_pointer(skb), |
| MRVDRV_ETH_RX_PACKET_BUFFER_SIZE, callbackfn, cardp); |
| |
| cardp->rx_urb->transfer_flags |= URB_ZERO_PACKET; |
| |
| lbtf_deb_usb2(&cardp->udev->dev, "Pointer for rx_urb %p\n", |
| cardp->rx_urb); |
| ret = usb_submit_urb(cardp->rx_urb, GFP_ATOMIC); |
| if (ret) { |
| lbtf_deb_usbd(&cardp->udev->dev, |
| "Submit Rx URB failed: %d\n", ret); |
| kfree_skb(skb); |
| cardp->rx_skb = NULL; |
| lbtf_deb_leave(LBTF_DEB_USB); |
| return -1; |
| } else { |
| lbtf_deb_usb2(&cardp->udev->dev, "Submit Rx URB success\n"); |
| lbtf_deb_leave(LBTF_DEB_USB); |
| return 0; |
| } |
| } |
| |
| static int if_usb_submit_rx_urb_fwload(struct if_usb_card *cardp) |
| { |
| return __if_usb_submit_rx_urb(cardp, &if_usb_receive_fwload); |
| } |
| |
| static int if_usb_submit_rx_urb(struct if_usb_card *cardp) |
| { |
| return __if_usb_submit_rx_urb(cardp, &if_usb_receive); |
| } |
| |
| static void if_usb_receive_fwload(struct urb *urb) |
| { |
| struct if_usb_card *cardp = urb->context; |
| struct sk_buff *skb = cardp->rx_skb; |
| struct fwsyncheader *syncfwheader; |
| struct bootcmdresp bcmdresp; |
| |
| lbtf_deb_enter(LBTF_DEB_USB); |
| if (urb->status) { |
| lbtf_deb_usbd(&cardp->udev->dev, |
| "URB status is failed during fw load\n"); |
| kfree_skb(skb); |
| lbtf_deb_leave(LBTF_DEB_USB); |
| return; |
| } |
| |
| if (cardp->fwdnldover) { |
| __le32 *tmp = (__le32 *)(skb->data); |
| |
| if (tmp[0] == cpu_to_le32(CMD_TYPE_INDICATION) && |
| tmp[1] == cpu_to_le32(MACREG_INT_CODE_FIRMWARE_READY)) { |
| /* Firmware ready event received */ |
| pr_info("Firmware ready event received\n"); |
| wake_up(&cardp->fw_wq); |
| } else { |
| lbtf_deb_usb("Waiting for confirmation; got %x %x\n", |
| le32_to_cpu(tmp[0]), le32_to_cpu(tmp[1])); |
| if_usb_submit_rx_urb_fwload(cardp); |
| } |
| kfree_skb(skb); |
| lbtf_deb_leave(LBTF_DEB_USB); |
| return; |
| } |
| if (cardp->bootcmdresp <= 0) { |
| memcpy(&bcmdresp, skb->data, sizeof(bcmdresp)); |
| |
| if (le16_to_cpu(cardp->udev->descriptor.bcdDevice) < 0x3106) { |
| kfree_skb(skb); |
| if_usb_submit_rx_urb_fwload(cardp); |
| cardp->bootcmdresp = 1; |
| /* Received valid boot command response */ |
| lbtf_deb_usbd(&cardp->udev->dev, |
| "Received valid boot command response\n"); |
| lbtf_deb_leave(LBTF_DEB_USB); |
| return; |
| } |
| if (bcmdresp.magic != cpu_to_le32(BOOT_CMD_MAGIC_NUMBER)) { |
| if (bcmdresp.magic == cpu_to_le32(CMD_TYPE_REQUEST) || |
| bcmdresp.magic == cpu_to_le32(CMD_TYPE_DATA) || |
| bcmdresp.magic == cpu_to_le32(CMD_TYPE_INDICATION)) { |
| if (!cardp->bootcmdresp) |
| pr_info("Firmware already seems alive; resetting\n"); |
| cardp->bootcmdresp = -1; |
| } else { |
| pr_info("boot cmd response wrong magic number (0x%x)\n", |
| le32_to_cpu(bcmdresp.magic)); |
| } |
| } else if (bcmdresp.cmd != BOOT_CMD_FW_BY_USB) { |
| pr_info("boot cmd response cmd_tag error (%d)\n", |
| bcmdresp.cmd); |
| } else if (bcmdresp.result != BOOT_CMD_RESP_OK) { |
| pr_info("boot cmd response result error (%d)\n", |
| bcmdresp.result); |
| } else { |
| cardp->bootcmdresp = 1; |
| lbtf_deb_usbd(&cardp->udev->dev, |
| "Received valid boot command response\n"); |
| } |
| |
| kfree_skb(skb); |
| if_usb_submit_rx_urb_fwload(cardp); |
| lbtf_deb_leave(LBTF_DEB_USB); |
| return; |
| } |
| |
| syncfwheader = kmemdup(skb->data, sizeof(struct fwsyncheader), |
| GFP_ATOMIC); |
| if (!syncfwheader) { |
| lbtf_deb_usbd(&cardp->udev->dev, |
| "Failure to allocate syncfwheader\n"); |
| kfree_skb(skb); |
| lbtf_deb_leave(LBTF_DEB_USB); |
| return; |
| } |
| |
| if (!syncfwheader->cmd) { |
| lbtf_deb_usb2(&cardp->udev->dev, |
| "FW received Blk with correct CRC\n"); |
| lbtf_deb_usb2(&cardp->udev->dev, |
| "FW received Blk seqnum = %d\n", |
| le32_to_cpu(syncfwheader->seqnum)); |
| cardp->CRC_OK = 1; |
| } else { |
| lbtf_deb_usbd(&cardp->udev->dev, |
| "FW received Blk with CRC error\n"); |
| cardp->CRC_OK = 0; |
| } |
| |
| kfree_skb(skb); |
| |
| /* reschedule timer for 200ms hence */ |
| mod_timer(&cardp->fw_timeout, jiffies + (HZ/5)); |
| |
| if (cardp->fwfinalblk) { |
| cardp->fwdnldover = 1; |
| goto exit; |
| } |
| |
| if_usb_send_fw_pkt(cardp); |
| |
| exit: |
| if_usb_submit_rx_urb_fwload(cardp); |
| |
| kfree(syncfwheader); |
| |
| lbtf_deb_leave(LBTF_DEB_USB); |
| } |
| |
| #define MRVDRV_MIN_PKT_LEN 30 |
| |
| static inline void process_cmdtypedata(int recvlength, struct sk_buff *skb, |
| struct if_usb_card *cardp, |
| struct lbtf_private *priv) |
| { |
| if (recvlength > MRVDRV_ETH_RX_PACKET_BUFFER_SIZE + MESSAGE_HEADER_LEN |
| || recvlength < MRVDRV_MIN_PKT_LEN) { |
| lbtf_deb_usbd(&cardp->udev->dev, "Packet length is Invalid\n"); |
| kfree_skb(skb); |
| return; |
| } |
| |
| skb_put(skb, recvlength); |
| skb_pull(skb, MESSAGE_HEADER_LEN); |
| lbtf_rx(priv, skb); |
| } |
| |
| static inline void process_cmdrequest(int recvlength, uint8_t *recvbuff, |
| struct sk_buff *skb, |
| struct if_usb_card *cardp, |
| struct lbtf_private *priv) |
| { |
| if (recvlength > LBS_CMD_BUFFER_SIZE) { |
| lbtf_deb_usbd(&cardp->udev->dev, |
| "The receive buffer is too large\n"); |
| kfree_skb(skb); |
| return; |
| } |
| |
| BUG_ON(!in_interrupt()); |
| |
| spin_lock(&priv->driver_lock); |
| memcpy(priv->cmd_resp_buff, recvbuff + MESSAGE_HEADER_LEN, |
| recvlength - MESSAGE_HEADER_LEN); |
| kfree_skb(skb); |
| lbtf_cmd_response_rx(priv); |
| spin_unlock(&priv->driver_lock); |
| } |
| |
| /** |
| * if_usb_receive - read data received from the device. |
| * |
| * @urb pointer to struct urb |
| */ |
| static void if_usb_receive(struct urb *urb) |
| { |
| struct if_usb_card *cardp = urb->context; |
| struct sk_buff *skb = cardp->rx_skb; |
| struct lbtf_private *priv = cardp->priv; |
| int recvlength = urb->actual_length; |
| uint8_t *recvbuff = NULL; |
| uint32_t recvtype = 0; |
| __le32 *pkt = (__le32 *) skb->data; |
| |
| lbtf_deb_enter(LBTF_DEB_USB); |
| |
| if (recvlength) { |
| if (urb->status) { |
| lbtf_deb_usbd(&cardp->udev->dev, "RX URB failed: %d\n", |
| urb->status); |
| kfree_skb(skb); |
| goto setup_for_next; |
| } |
| |
| recvbuff = skb->data; |
| recvtype = le32_to_cpu(pkt[0]); |
| lbtf_deb_usbd(&cardp->udev->dev, |
| "Recv length = 0x%x, Recv type = 0x%X\n", |
| recvlength, recvtype); |
| } else if (urb->status) { |
| kfree_skb(skb); |
| lbtf_deb_leave(LBTF_DEB_USB); |
| return; |
| } |
| |
| 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 */ |
| u32 event_cause = le32_to_cpu(pkt[1]); |
| lbtf_deb_usbd(&cardp->udev->dev, "**EVENT** 0x%X\n", |
| event_cause); |
| |
| /* Icky undocumented magic special case */ |
| if (event_cause & 0xffff0000) { |
| u16 tmp; |
| u8 retrycnt; |
| u8 failure; |
| |
| tmp = event_cause >> 16; |
| retrycnt = tmp & 0x00ff; |
| failure = (tmp & 0xff00) >> 8; |
| lbtf_send_tx_feedback(priv, retrycnt, failure); |
| } else if (event_cause == LBTF_EVENT_BCN_SENT) |
| lbtf_bcn_sent(priv); |
| else |
| lbtf_deb_usbd(&cardp->udev->dev, |
| "Unsupported notification %d received\n", |
| event_cause); |
| kfree_skb(skb); |
| break; |
| } |
| default: |
| lbtf_deb_usbd(&cardp->udev->dev, |
| "libertastf: unknown command type 0x%X\n", recvtype); |
| kfree_skb(skb); |
| break; |
| } |
| |
| setup_for_next: |
| if_usb_submit_rx_urb(cardp); |
| lbtf_deb_leave(LBTF_DEB_USB); |
| } |
| |
| /** |
| * if_usb_host_to_card - Download data to the device |
| * |
| * @priv pointer to struct lbtf_private structure |
| * @type type of data |
| * @buf pointer to data buffer |
| * @len number of bytes |
| * |
| * Returns: 0 on success, nonzero otherwise |
| */ |
| static int if_usb_host_to_card(struct lbtf_private *priv, uint8_t type, |
| uint8_t *payload, uint16_t nb) |
| { |
| struct if_usb_card *cardp = priv->card; |
| u8 data = 0; |
| |
| lbtf_deb_usbd(&cardp->udev->dev, "*** type = %u\n", type); |
| lbtf_deb_usbd(&cardp->udev->dev, "size after = %d\n", nb); |
| |
| if (type == MVMS_CMD) { |
| *(__le32 *)cardp->ep_out_buf = cpu_to_le32(CMD_TYPE_REQUEST); |
| } else { |
| *(__le32 *)cardp->ep_out_buf = cpu_to_le32(CMD_TYPE_DATA); |
| data = 1; |
| } |
| |
| memcpy((cardp->ep_out_buf + MESSAGE_HEADER_LEN), payload, nb); |
| |
| return usb_tx_block(cardp, cardp->ep_out_buf, nb + MESSAGE_HEADER_LEN, |
| data); |
| } |
| |
| /** |
| * if_usb_issue_boot_command - Issue boot command to Boot2. |
| * |
| * @ivalue 1 boots from FW by USB-Download, 2 boots from FW in EEPROM. |
| * |
| * Returns: 0 |
| */ |
| static int if_usb_issue_boot_command(struct if_usb_card *cardp, int ivalue) |
| { |
| struct bootcmd *bootcmd = cardp->ep_out_buf; |
| |
| /* Prepare command */ |
| bootcmd->magic = cpu_to_le32(BOOT_CMD_MAGIC_NUMBER); |
| bootcmd->cmd = ivalue; |
| memset(bootcmd->pad, 0, sizeof(bootcmd->pad)); |
| |
| /* Issue command */ |
| usb_tx_block(cardp, cardp->ep_out_buf, sizeof(*bootcmd), 0); |
| |
| return 0; |
| } |
| |
| |
| /** |
| * check_fwfile_format - Check the validity of Boot2/FW image. |
| * |
| * @data pointer to image |
| * @totlen image length |
| * |
| * Returns: 0 if the image is valid, nonzero otherwise. |
| */ |
| static int check_fwfile_format(const 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) |
| pr_err("firmware file format check FAIL\n"); |
| else |
| lbtf_deb_fw("firmware file format check PASS\n"); |
| |
| return ret; |
| } |
| |
| |
| static int if_usb_prog_firmware(struct if_usb_card *cardp) |
| { |
| int i = 0; |
| static int reset_count = 10; |
| int ret = 0; |
| |
| lbtf_deb_enter(LBTF_DEB_USB); |
| |
| kernel_param_lock(THIS_MODULE); |
| ret = request_firmware(&cardp->fw, lbtf_fw_name, &cardp->udev->dev); |
| if (ret < 0) { |
| pr_err("request_firmware() failed with %#x\n", ret); |
| pr_err("firmware %s not found\n", lbtf_fw_name); |
| kernel_param_unlock(THIS_MODULE); |
| goto done; |
| } |
| kernel_param_unlock(THIS_MODULE); |
| |
| if (check_fwfile_format(cardp->fw->data, cardp->fw->size)) |
| goto release_fw; |
| |
| restart: |
| if (if_usb_submit_rx_urb_fwload(cardp) < 0) { |
| lbtf_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; |
| |
| /* Send the first firmware packet... */ |
| if_usb_send_fw_pkt(cardp); |
| |
| /* ... and wait for the process to complete */ |
| wait_event_interruptible(cardp->fw_wq, cardp->priv->surpriseremoved || |
| cardp->fwdnldover); |
| |
| del_timer_sync(&cardp->fw_timeout); |
| usb_kill_urb(cardp->rx_urb); |
| |
| if (!cardp->fwdnldover) { |
| pr_info("failed to load fw, resetting device!\n"); |
| if (--reset_count >= 0) { |
| if_usb_reset_device(cardp); |
| goto restart; |
| } |
| |
| pr_info("FW download failure, time = %d ms\n", i * 100); |
| ret = -1; |
| goto release_fw; |
| } |
| |
| cardp->priv->fw_ready = 1; |
| |
| release_fw: |
| release_firmware(cardp->fw); |
| cardp->fw = NULL; |
| |
| if_usb_setup_firmware(cardp->priv); |
| |
| done: |
| lbtf_deb_leave_args(LBTF_DEB_USB, "ret %d", ret); |
| return ret; |
| } |
| |
| |
| #define if_usb_suspend NULL |
| #define if_usb_resume NULL |
| |
| static struct usb_driver if_usb_driver = { |
| .name = DRV_NAME, |
| .probe = if_usb_probe, |
| .disconnect = if_usb_disconnect, |
| .id_table = if_usb_table, |
| .suspend = if_usb_suspend, |
| .resume = if_usb_resume, |
| .disable_hub_initiated_lpm = 1, |
| }; |
| |
| module_usb_driver(if_usb_driver); |
| |
| MODULE_DESCRIPTION("8388 USB WLAN Thinfirm Driver"); |
| MODULE_AUTHOR("Cozybit Inc."); |
| MODULE_LICENSE("GPL"); |