diff options
Diffstat (limited to 'package/libertas/src/if_usb.c')
| -rw-r--r-- | package/libertas/src/if_usb.c | 1043 |
1 files changed, 1043 insertions, 0 deletions
diff --git a/package/libertas/src/if_usb.c b/package/libertas/src/if_usb.c new file mode 100644 index 0000000000..02192e8a15 --- /dev/null +++ b/package/libertas/src/if_usb.c @@ -0,0 +1,1043 @@ +/** + * This file contains functions used in USB interface module. + */ +#include <linux/delay.h> +#include <linux/moduleparam.h> +#include <linux/firmware.h> +#include <linux/netdevice.h> +#include <linux/usb.h> + +#define DRV_NAME "usb8xxx" + +#include "host.h" +#include "decl.h" +#include "defs.h" +#include "dev.h" +#include "cmd.h" +#include "if_usb.h" + +#define MESSAGE_HEADER_LEN 4 + +static char *lbs_fw_name = "usb8388.bin"; +module_param_named(fw_name, lbs_fw_name, charp, 0644); + +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(struct lbs_private *priv, + u8 type, + u8 *payload, + u16 nb); +static int if_usb_get_int_status(struct lbs_private *priv, u8 *); +static int if_usb_read_event_cause(struct 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) { + struct 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_host_to_card_done(priv); + } 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); +} + +static void if_usb_set_boot2_ver(struct lbs_private *priv) +{ + struct cmd_ds_set_boot2_ver b2_cmd; + + b2_cmd.action = 0; + b2_cmd.version = priv->boot2_version; + + if (lbs_cmd(priv, CMD_SET_BOOT2_VER, b2_cmd, NULL, 0)) + lbs_deb_usb("Setting boot2 version failed\n"); +} + +static void if_usb_fw_timeo(unsigned long priv) +{ + struct usb_card_rec *cardp = (void *)priv; + + if (cardp->fwdnldover) { + lbs_deb_usb("Download complete, no event. Assuming success\n"); + } else { + lbs_pr_err("Download timed out\n"); + cardp->surprise_removed = 1; + } + wake_up(&cardp->fw_wq); +} +/** + * @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; + struct 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; + } + + 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; + + 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->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; + cardp->priv->fw_ready = 1; + + 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; + + if_usb_submit_rx_urb(cardp); + + if (lbs_start_card(priv)) + goto err_start_card; + + if_usb_set_boot2_ver(priv); + + usb_get_dev(udev); + usb_set_intfdata(intf, cardp); + + return 0; + +err_start_card: + 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); + struct lbs_private *priv = (struct lbs_private *) cardp->priv; + + lbs_deb_enter(LBS_DEB_MAIN); + + /* Update Surprise removed to TRUE */ + cardp->surprise_removed = 1; + + if (priv) { + + priv->surpriseremoved = 1; + lbs_stop_card(priv); + lbs_remove_card(priv); + } + + /* this is (apparently?) necessary for future usage of the device */ + lbs_prepare_and_send_command(priv, CMD_802_11_RESET, CMD_ACT_HALT, + 0, 0, NULL); + + /* 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 struct lbs_private + * @return 0 + */ +static int if_usb_send_fw_pkt(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) +{ + struct cmd_ds_command *cmd = (void *)&cardp->bulk_out_buffer[4]; + int ret; + + lbs_deb_enter(LBS_DEB_USB); + + *(__le32 *)cardp->bulk_out_buffer = cpu_to_le32(CMD_TYPE_REQUEST); + + cmd->command = cpu_to_le16(CMD_802_11_RESET); + cmd->size = cpu_to_le16(sizeof(struct cmd_ds_802_11_reset) + S_DS_GEN); + cmd->result = cpu_to_le16(0); + cmd->seqnum = cpu_to_le16(0x5a5a); + cmd->params.reset.action = cpu_to_le16(CMD_ACT_HALT); + usb_tx_block(cardp, cardp->bulk_out_buffer, 4 + S_DS_GEN + sizeof(struct cmd_ds_802_11_reset)); + + msleep(100); + ret = usb_reset_device(cardp->udev); + msleep(100); + + 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 struct 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: %d\n", ret); + 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: %d\n", ret); + kfree_skb(skb); + rinfo->skb = NULL; + 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->fwdnldover) { + __le32 *tmp = (__le32 *)(skb->data + IPFIELD_ALIGN_OFFSET); + + if (tmp[0] == cpu_to_le32(CMD_TYPE_INDICATION) && + tmp[1] == cpu_to_le32(MACREG_INT_CODE_FIRMWARE_READY)) { + lbs_pr_info("Firmware ready event received\n"); + wake_up(&cardp->fw_wq); + } else { + lbs_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); + 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)) { + if (bootcmdresp.u32magicnumber == cpu_to_le32(CMD_TYPE_REQUEST) || + bootcmdresp.u32magicnumber == cpu_to_le32(CMD_TYPE_DATA) || + bootcmdresp.u32magicnumber == cpu_to_le32(CMD_TYPE_INDICATION)) { + if (!cardp->bootcmdresp) + lbs_pr_info("Firmware already seems alive; resetting\n"); + cardp->bootcmdresp = -1; + } else { + 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); + + /* 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); + + return; +} + +#define MRVDRV_MIN_PKT_LEN 30 + +static inline void process_cmdtypedata(int recvlength, struct sk_buff *skb, + struct usb_card_rec *cardp, + struct 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, + struct lbs_private *priv) +{ + u8 *cmdbuf; + if (recvlength > LBS_CMD_BUFFER_SIZE) { + lbs_deb_usbd(&cardp->udev->dev, + "The receive buffer is too large\n"); + kfree_skb(skb); + return; + } + + if (!in_interrupt()) + BUG(); + + spin_lock(&priv->driver_lock); + /* take care of cur_cmd = NULL case by reading the + * data to clear the interrupt */ + if (!priv->cur_cmd) { + cmdbuf = priv->upld_buf; + priv->hisregcpy &= ~MRVDRV_CMD_UPLD_RDY; + } else + cmdbuf = (u8 *) priv->cur_cmd->cmdbuf; + + 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); + spin_unlock(&priv->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; + struct 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) { + kfree_skb(skb); + 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->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->driver_lock); + break; + } + cardp->usb_event_cause <<= 3; + cardp->usb_int_cause |= MRVDRV_CARDEVENT; + kfree_skb(skb); + lbs_interrupt(priv); + spin_unlock(&priv->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 struct 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(struct 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 priv->driver_lock held */ +static int if_usb_get_int_status(struct 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(struct lbs_private *priv) +{ + struct usb_card_rec *cardp = priv->card; + + priv->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; + + /* 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->surprise_removed || cardp->fwdnldover); + + del_timer_sync(&cardp->fw_timeout); + usb_kill_urb(cardp->rx_urb); + + 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); + struct lbs_private *priv = cardp->priv; + + lbs_deb_enter(LBS_DEB_USB); + + if (priv->psstate != PS_STATE_FULL_POWER) + return -1; + + netif_device_detach(priv->dev); + netif_device_detach(priv->mesh_dev); + + /* Unlink tx & rx urb */ + usb_kill_urb(cardp->tx_urb); + usb_kill_urb(cardp->rx_urb); + + 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); + struct lbs_private *priv = cardp->priv; + + lbs_deb_enter(LBS_DEB_USB); + + if_usb_submit_rx_urb(cardp); + + netif_device_attach(priv->dev); + netif_device_attach(priv->mesh_dev); + + 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 = { + .name = DRV_NAME, + .probe = if_usb_probe, + .disconnect = if_usb_disconnect, + .id_table = if_usb_table, + .suspend = if_usb_suspend, + .resume = if_usb_resume, +}; + +static int __init if_usb_init_module(void) +{ + int ret = 0; + + lbs_deb_enter(LBS_DEB_MAIN); + + ret = usb_register(&if_usb_driver); + + lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret); + return ret; +} + +static void __exit if_usb_exit_module(void) +{ + lbs_deb_enter(LBS_DEB_MAIN); + + 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"); |