| /** |
| * 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> |
| |
| #ifdef CONFIG_OLPC |
| #include <asm/olpc.h> |
| #endif |
| |
| #define DRV_NAME "usb8xxx" |
| |
| #include "host.h" |
| #include "decl.h" |
| #include "defs.h" |
| #include "dev.h" |
| #include "cmd.h" |
| #include "if_usb.h" |
| |
| #define INSANEDEBUG 0 |
| #define lbs_deb_usb2(...) do { if (INSANEDEBUG) lbs_deb_usbd(__VA_ARGS__); } while (0) |
| |
| #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 if_usb_card *cardp, |
| const char *fwname, int cmd); |
| static int if_usb_prog_firmware(struct if_usb_card *cardp, |
| const char *fwname, int cmd); |
| static int if_usb_host_to_card(struct lbs_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); |
| 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); |
| |
| /* sysfs hooks */ |
| |
| /** |
| * Set function to write firmware to device's persistent memory |
| */ |
| static ssize_t if_usb_firmware_set(struct device *dev, |
| struct device_attribute *attr, const char *buf, size_t count) |
| { |
| struct lbs_private *priv = to_net_dev(dev)->ml_priv; |
| struct if_usb_card *cardp = priv->card; |
| int ret; |
| |
| ret = if_usb_prog_firmware(cardp, buf, BOOT_CMD_UPDATE_FW); |
| if (ret == 0) |
| return count; |
| |
| return ret; |
| } |
| |
| /** |
| * lbs_flash_fw attribute to be exported per ethX interface through sysfs |
| * (/sys/class/net/ethX/lbs_flash_fw). Use this like so to write firmware to |
| * the device's persistent memory: |
| * echo usb8388-5.126.0.p5.bin > /sys/class/net/ethX/lbs_flash_fw |
| */ |
| static DEVICE_ATTR(lbs_flash_fw, 0200, NULL, if_usb_firmware_set); |
| |
| /** |
| * Set function to write firmware to device's persistent memory |
| */ |
| static ssize_t if_usb_boot2_set(struct device *dev, |
| struct device_attribute *attr, const char *buf, size_t count) |
| { |
| struct lbs_private *priv = to_net_dev(dev)->ml_priv; |
| struct if_usb_card *cardp = priv->card; |
| int ret; |
| |
| ret = if_usb_prog_firmware(cardp, buf, BOOT_CMD_UPDATE_BOOT2); |
| if (ret == 0) |
| return count; |
| |
| return ret; |
| } |
| |
| /** |
| * lbs_flash_boot2 attribute to be exported per ethX interface through sysfs |
| * (/sys/class/net/ethX/lbs_flash_boot2). Use this like so to write firmware |
| * to the device's persistent memory: |
| * echo usb8388-5.126.0.p5.bin > /sys/class/net/ethX/lbs_flash_boot2 |
| */ |
| static DEVICE_ATTR(lbs_flash_boot2, 0200, NULL, if_usb_boot2_set); |
| |
| /** |
| * @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 if_usb_card *cardp = (struct if_usb_card *) urb->context; |
| |
| /* handle the transmission complete validations */ |
| |
| if (urb->status == 0) { |
| struct lbs_private *priv = cardp->priv; |
| |
| lbs_deb_usb2(&urb->dev->dev, "URB status is successful\n"); |
| lbs_deb_usb2(&urb->dev->dev, "Actual length transmitted %d\n", |
| urb->actual_length); |
| |
| /* Boot commands such as UPDATE_FW and UPDATE_BOOT2 are not |
| * passed up to the lbs level. |
| */ |
| if (priv && priv->dnld_sent != DNLD_BOOTCMD_SENT) |
| 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 if_usb_card |
| * @return N/A |
| */ |
| static void if_usb_free(struct if_usb_card *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->ep_out_buf); |
| cardp->ep_out_buf = NULL; |
| |
| lbs_deb_leave(LBS_DEB_USB); |
| } |
| |
| static void if_usb_setup_firmware(struct lbs_private *priv) |
| { |
| struct if_usb_card *cardp = priv->card; |
| struct cmd_ds_set_boot2_ver b2_cmd; |
| struct cmd_ds_802_11_fw_wake_method wake_method; |
| |
| b2_cmd.hdr.size = cpu_to_le16(sizeof(b2_cmd)); |
| b2_cmd.action = 0; |
| b2_cmd.version = cardp->boot2_version; |
| |
| if (lbs_cmd_with_response(priv, CMD_SET_BOOT2_VER, &b2_cmd)) |
| lbs_deb_usb("Setting boot2 version failed\n"); |
| |
| priv->wol_gpio = 2; /* Wake via GPIO2... */ |
| priv->wol_gap = 20; /* ... after 20ms */ |
| lbs_host_sleep_cfg(priv, EHS_WAKE_ON_UNICAST_DATA, |
| (struct wol_config *) NULL); |
| |
| wake_method.hdr.size = cpu_to_le16(sizeof(wake_method)); |
| wake_method.action = cpu_to_le16(CMD_ACT_GET); |
| if (lbs_cmd_with_response(priv, CMD_802_11_FW_WAKE_METHOD, &wake_method)) { |
| lbs_pr_info("Firmware does not seem to support PS mode\n"); |
| priv->fwcapinfo &= ~FW_CAPINFO_PS; |
| } else { |
| if (le16_to_cpu(wake_method.method) == CMD_WAKE_METHOD_COMMAND_INT) { |
| lbs_deb_usb("Firmware seems to support PS with wake-via-command\n"); |
| } else { |
| /* The versions which boot up this way don't seem to |
| work even if we set it to the command interrupt */ |
| priv->fwcapinfo &= ~FW_CAPINFO_PS; |
| lbs_pr_info("Firmware doesn't wake via command interrupt; disabling PS mode\n"); |
| } |
| } |
| } |
| |
| static void if_usb_fw_timeo(unsigned long priv) |
| { |
| struct if_usb_card *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); |
| } |
| |
| #ifdef CONFIG_OLPC |
| static void if_usb_reset_olpc_card(struct lbs_private *priv) |
| { |
| printk(KERN_CRIT "Resetting OLPC wireless via EC...\n"); |
| olpc_ec_cmd(0x25, NULL, 0, NULL, 0); |
| } |
| #endif |
| |
| /** |
| * @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 if_usb_card *cardp; |
| int i; |
| |
| udev = interface_to_usbdev(intf); |
| |
| cardp = kzalloc(sizeof(struct if_usb_card), 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 (usb_endpoint_is_bulk_in(endpoint)) { |
| cardp->ep_in_size = le16_to_cpu(endpoint->wMaxPacketSize); |
| cardp->ep_in = usb_endpoint_num(endpoint); |
| |
| lbs_deb_usbd(&udev->dev, "in_endpoint = %d\n", cardp->ep_in); |
| lbs_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); |
| |
| lbs_deb_usbd(&udev->dev, "out_endpoint = %d\n", cardp->ep_out); |
| lbs_deb_usbd(&udev->dev, "Bulk out size is %d\n", cardp->ep_out_size); |
| } |
| } |
| if (!cardp->ep_out_size || !cardp->ep_in_size) { |
| lbs_deb_usbd(&udev->dev, "Endpoints not found\n"); |
| goto dealloc; |
| } |
| if (!(cardp->rx_urb = usb_alloc_urb(0, GFP_KERNEL))) { |
| lbs_deb_usbd(&udev->dev, "Rx URB allocation failed\n"); |
| goto dealloc; |
| } |
| if (!(cardp->tx_urb = usb_alloc_urb(0, GFP_KERNEL))) { |
| lbs_deb_usbd(&udev->dev, "Tx URB allocation failed\n"); |
| goto dealloc; |
| } |
| cardp->ep_out_buf = kmalloc(MRVDRV_ETH_TX_PACKET_BUFFER_SIZE, GFP_KERNEL); |
| if (!cardp->ep_out_buf) { |
| lbs_deb_usbd(&udev->dev, "Could not allocate buffer\n"); |
| goto dealloc; |
| } |
| |
| /* Upload firmware */ |
| if (__if_usb_prog_firmware(cardp, lbs_fw_name, BOOT_CMD_FW_BY_USB)) { |
| lbs_deb_usbd(&udev->dev, "FW upload failed\n"); |
| 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; |
| #ifdef CONFIG_OLPC |
| if (machine_is_olpc()) |
| priv->reset_card = if_usb_reset_olpc_card; |
| #endif |
| |
| cardp->boot2_version = udev->descriptor.bcdDevice; |
| |
| if_usb_submit_rx_urb(cardp); |
| |
| if (lbs_start_card(priv)) |
| goto err_start_card; |
| |
| if_usb_setup_firmware(priv); |
| |
| usb_get_dev(udev); |
| usb_set_intfdata(intf, cardp); |
| |
| if (device_create_file(&priv->dev->dev, &dev_attr_lbs_flash_fw)) |
| lbs_pr_err("cannot register lbs_flash_fw attribute\n"); |
| |
| if (device_create_file(&priv->dev->dev, &dev_attr_lbs_flash_boot2)) |
| lbs_pr_err("cannot register lbs_flash_boot2 attribute\n"); |
| |
| 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 if_usb_card *cardp = usb_get_intfdata(intf); |
| struct lbs_private *priv = (struct lbs_private *) cardp->priv; |
| |
| lbs_deb_enter(LBS_DEB_MAIN); |
| |
| device_remove_file(&priv->dev->dev, &dev_attr_lbs_flash_boot2); |
| device_remove_file(&priv->dev->dev, &dev_attr_lbs_flash_fw); |
| |
| cardp->surprise_removed = 1; |
| |
| if (priv) { |
| priv->surpriseremoved = 1; |
| lbs_stop_card(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 struct lbs_private |
| * @return 0 |
| */ |
| static int if_usb_send_fw_pkt(struct if_usb_card *cardp) |
| { |
| struct fwdata *fwdata = cardp->ep_out_buf; |
| const uint8_t *firmware = cardp->fw->data; |
| |
| /* 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--; |
| } |
| |
| lbs_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)); |
| |
| lbs_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)); |
| |
| if (fwdata->hdr.dnldcmd == cpu_to_le32(FW_HAS_DATA_TO_RECV)) { |
| lbs_deb_usb2(&cardp->udev->dev, "There are data to follow\n"); |
| lbs_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)) { |
| lbs_deb_usb2(&cardp->udev->dev, "Host has finished FW downloading\n"); |
| lbs_deb_usb2(&cardp->udev->dev, "Donwloading FW JUMP BLOCK\n"); |
| |
| cardp->fwfinalblk = 1; |
| } |
| |
| lbs_deb_usb2(&cardp->udev->dev, "Firmware download done; size %d\n", |
| cardp->totalbytes); |
| |
| return 0; |
| } |
| |
| static int if_usb_reset_device(struct if_usb_card *cardp) |
| { |
| struct cmd_ds_command *cmd = cardp->ep_out_buf + 4; |
| int ret; |
| |
| lbs_deb_enter(LBS_DEB_USB); |
| |
| *(__le32 *)cardp->ep_out_buf = cpu_to_le32(CMD_TYPE_REQUEST); |
| |
| cmd->command = cpu_to_le16(CMD_802_11_RESET); |
| cmd->size = cpu_to_le16(sizeof(struct cmd_header)); |
| cmd->result = cpu_to_le16(0); |
| cmd->seqnum = cpu_to_le16(0x5a5a); |
| usb_tx_block(cardp, cardp->ep_out_buf, 4 + sizeof(struct cmd_header)); |
| |
| msleep(100); |
| ret = usb_reset_device(cardp->udev); |
| msleep(100); |
| |
| #ifdef CONFIG_OLPC |
| if (ret && machine_is_olpc()) |
| if_usb_reset_olpc_card(NULL); |
| #endif |
| |
| 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 if_usb_card *cardp, uint8_t *payload, uint16_t 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->ep_out), |
| 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))) { |
| lbs_deb_usbd(&cardp->udev->dev, "usb_submit_urb failed: %d\n", ret); |
| ret = -1; |
| } else { |
| lbs_deb_usb2(&cardp->udev->dev, "usb_submit_urb success\n"); |
| ret = 0; |
| } |
| |
| tx_ret: |
| 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; |
| |
| if (!(skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE))) { |
| lbs_pr_err("No free skb\n"); |
| goto rx_ret; |
| } |
| |
| 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), |
| (void *) (skb->tail + (size_t) IPFIELD_ALIGN_OFFSET), |
| MRVDRV_ETH_RX_PACKET_BUFFER_SIZE, callbackfn, |
| cardp); |
| |
| cardp->rx_urb->transfer_flags |= URB_ZERO_PACKET; |
| |
| lbs_deb_usb2(&cardp->udev->dev, "Pointer for rx_urb %p\n", cardp->rx_urb); |
| if ((ret = usb_submit_urb(cardp->rx_urb, GFP_ATOMIC))) { |
| lbs_deb_usbd(&cardp->udev->dev, "Submit Rx URB failed: %d\n", ret); |
| kfree_skb(skb); |
| cardp->rx_skb = NULL; |
| ret = -1; |
| } else { |
| lbs_deb_usb2(&cardp->udev->dev, "Submit Rx URB success\n"); |
| ret = 0; |
| } |
| |
| rx_ret: |
| return ret; |
| } |
| |
| 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 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 = BOOT_CMD_RESP_OK; |
| lbs_deb_usbd(&cardp->udev->dev, |
| "Received valid boot command response\n"); |
| return; |
| } |
| if (bootcmdresp.magic != cpu_to_le32(BOOT_CMD_MAGIC_NUMBER)) { |
| if (bootcmdresp.magic == cpu_to_le32(CMD_TYPE_REQUEST) || |
| bootcmdresp.magic == cpu_to_le32(CMD_TYPE_DATA) || |
| bootcmdresp.magic == 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.magic)); |
| } |
| } else if ((bootcmdresp.cmd != BOOT_CMD_FW_BY_USB) && |
| (bootcmdresp.cmd != BOOT_CMD_UPDATE_FW) && |
| (bootcmdresp.cmd != BOOT_CMD_UPDATE_BOOT2)) { |
| lbs_pr_info("boot cmd response cmd_tag error (%d)\n", |
| bootcmdresp.cmd); |
| } else if (bootcmdresp.result != BOOT_CMD_RESP_OK) { |
| lbs_pr_info("boot cmd response result error (%d)\n", |
| bootcmdresp.result); |
| } 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_usb2(&cardp->udev->dev, "FW received Blk with correct CRC\n"); |
| lbs_deb_usb2(&cardp->udev->dev, "FW received Blk seqnum = %d\n", |
| le32_to_cpu(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); |
| |
| /* Give device 5s to either write firmware to its RAM or eeprom */ |
| 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 if_usb_card *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); |
| } |
| |
| static inline void process_cmdrequest(int recvlength, uint8_t *recvbuff, |
| struct sk_buff *skb, |
| struct if_usb_card *cardp, |
| struct lbs_private *priv) |
| { |
| u8 i; |
| |
| if (recvlength > LBS_CMD_BUFFER_SIZE) { |
| lbs_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); |
| |
| i = (priv->resp_idx == 0) ? 1 : 0; |
| BUG_ON(priv->resp_len[i]); |
| priv->resp_len[i] = (recvlength - MESSAGE_HEADER_LEN); |
| memcpy(priv->resp_buf[i], recvbuff + MESSAGE_HEADER_LEN, |
| priv->resp_len[i]); |
| kfree_skb(skb); |
| lbs_notify_command_response(priv, i); |
| |
| spin_unlock(&priv->driver_lock); |
| |
| lbs_deb_usbd(&cardp->udev->dev, |
| "Wake up main thread to handle cmd response\n"); |
| } |
| |
| /** |
| * @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 if_usb_card *cardp = urb->context; |
| struct sk_buff *skb = cardp->rx_skb; |
| struct lbs_private *priv = cardp->priv; |
| int recvlength = urb->actual_length; |
| uint8_t *recvbuff = NULL; |
| uint32_t recvtype = 0; |
| __le32 *pkt = (__le32 *)(skb->data + IPFIELD_ALIGN_OFFSET); |
| uint32_t event; |
| |
| lbs_deb_enter(LBS_DEB_USB); |
| |
| if (recvlength) { |
| if (urb->status) { |
| lbs_deb_usbd(&cardp->udev->dev, "RX URB failed: %d\n", |
| urb->status); |
| kfree_skb(skb); |
| goto setup_for_next; |
| } |
| |
| recvbuff = skb->data + IPFIELD_ALIGN_OFFSET; |
| recvtype = le32_to_cpu(pkt[0]); |
| 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 handling */ |
| event = le32_to_cpu(pkt[1]); |
| lbs_deb_usbd(&cardp->udev->dev, "**EVENT** 0x%X\n", event); |
| kfree_skb(skb); |
| |
| /* Icky undocumented magic special case */ |
| if (event & 0xffff0000) { |
| u32 trycount = (event & 0xffff0000) >> 16; |
| |
| lbs_send_tx_feedback(priv, trycount); |
| } else |
| lbs_queue_event(priv, event & 0xFF); |
| break; |
| |
| 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, uint8_t type, |
| uint8_t *payload, uint16_t nb) |
| { |
| struct if_usb_card *cardp = 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 *)cardp->ep_out_buf = cpu_to_le32(CMD_TYPE_REQUEST); |
| priv->dnld_sent = DNLD_CMD_SENT; |
| } else { |
| *(__le32 *)cardp->ep_out_buf = cpu_to_le32(CMD_TYPE_DATA); |
| priv->dnld_sent = DNLD_DATA_SENT; |
| } |
| |
| memcpy((cardp->ep_out_buf + MESSAGE_HEADER_LEN), payload, nb); |
| |
| return usb_tx_block(cardp, cardp->ep_out_buf, nb + MESSAGE_HEADER_LEN); |
| } |
| |
| /** |
| * @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 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)); |
| |
| 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(const uint8_t *data, uint32_t totlen) |
| { |
| uint32_t bincmd, exit; |
| uint32_t 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; |
| } |
| |
| |
| /** |
| * @brief This function programs the firmware subject to cmd |
| * |
| * @param cardp the if_usb_card descriptor |
| * fwname firmware or boot2 image file name |
| * cmd either BOOT_CMD_FW_BY_USB, BOOT_CMD_UPDATE_FW, |
| * or BOOT_CMD_UPDATE_BOOT2. |
| * @return 0 or error code |
| */ |
| static int if_usb_prog_firmware(struct if_usb_card *cardp, |
| const char *fwname, int cmd) |
| { |
| struct lbs_private *priv = cardp->priv; |
| unsigned long flags, caps; |
| int ret; |
| |
| caps = priv->fwcapinfo; |
| if (((cmd == BOOT_CMD_UPDATE_FW) && !(caps & FW_CAPINFO_FIRMWARE_UPGRADE)) || |
| ((cmd == BOOT_CMD_UPDATE_BOOT2) && !(caps & FW_CAPINFO_BOOT2_UPGRADE))) |
| return -EOPNOTSUPP; |
| |
| /* Ensure main thread is idle. */ |
| spin_lock_irqsave(&priv->driver_lock, flags); |
| while (priv->cur_cmd != NULL || priv->dnld_sent != DNLD_RES_RECEIVED) { |
| spin_unlock_irqrestore(&priv->driver_lock, flags); |
| if (wait_event_interruptible(priv->waitq, |
| (priv->cur_cmd == NULL && |
| priv->dnld_sent == DNLD_RES_RECEIVED))) { |
| return -ERESTARTSYS; |
| } |
| spin_lock_irqsave(&priv->driver_lock, flags); |
| } |
| priv->dnld_sent = DNLD_BOOTCMD_SENT; |
| spin_unlock_irqrestore(&priv->driver_lock, flags); |
| |
| ret = __if_usb_prog_firmware(cardp, fwname, cmd); |
| |
| spin_lock_irqsave(&priv->driver_lock, flags); |
| priv->dnld_sent = DNLD_RES_RECEIVED; |
| spin_unlock_irqrestore(&priv->driver_lock, flags); |
| |
| wake_up_interruptible(&priv->waitq); |
| |
| return ret; |
| } |
| |
| static int __if_usb_prog_firmware(struct if_usb_card *cardp, |
| const char *fwname, int cmd) |
| { |
| int i = 0; |
| static int reset_count = 10; |
| int ret = 0; |
| |
| lbs_deb_enter(LBS_DEB_USB); |
| |
| ret = request_firmware(&cardp->fw, fwname, &cardp->udev->dev); |
| if (ret < 0) { |
| lbs_pr_err("request_firmware() failed with %#x\n", ret); |
| lbs_pr_err("firmware %s not found\n", fwname); |
| goto done; |
| } |
| |
| if (check_fwfile_format(cardp->fw->data, cardp->fw->size)) { |
| ret = -EINVAL; |
| goto release_fw; |
| } |
| |
| /* Cancel any pending usb business */ |
| usb_kill_urb(cardp->rx_urb); |
| usb_kill_urb(cardp->tx_urb); |
| |
| cardp->fwlastblksent = 0; |
| cardp->fwdnldover = 0; |
| cardp->totalbytes = 0; |
| cardp->fwfinalblk = 0; |
| cardp->bootcmdresp = 0; |
| |
| restart: |
| if (if_usb_submit_rx_urb_fwload(cardp) < 0) { |
| lbs_deb_usbd(&cardp->udev->dev, "URB submission is failed\n"); |
| ret = -EIO; |
| goto release_fw; |
| } |
| |
| cardp->bootcmdresp = 0; |
| do { |
| int j = 0; |
| i++; |
| if_usb_issue_boot_command(cardp, cmd); |
| /* wait for command response */ |
| do { |
| j++; |
| msleep_interruptible(100); |
| } while (cardp->bootcmdresp == 0 && j < 10); |
| } while (cardp->bootcmdresp == 0 && i < 5); |
| |
| if (cardp->bootcmdresp == BOOT_CMD_RESP_NOT_SUPPORTED) { |
| /* Return to normal operation */ |
| ret = -EOPNOTSUPP; |
| usb_kill_urb(cardp->rx_urb); |
| usb_kill_urb(cardp->tx_urb); |
| if (if_usb_submit_rx_urb(cardp) < 0) |
| ret = -EIO; |
| goto release_fw; |
| } else if (cardp->bootcmdresp <= 0) { |
| if (--reset_count >= 0) { |
| if_usb_reset_device(cardp); |
| goto restart; |
| } |
| ret = -EIO; |
| goto release_fw; |
| } |
| |
| 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 = -EIO; |
| 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 if_usb_card *cardp = usb_get_intfdata(intf); |
| struct lbs_private *priv = cardp->priv; |
| int ret; |
| |
| lbs_deb_enter(LBS_DEB_USB); |
| |
| if (priv->psstate != PS_STATE_FULL_POWER) |
| return -1; |
| |
| ret = lbs_suspend(priv); |
| if (ret) |
| goto out; |
| |
| /* Unlink tx & rx urb */ |
| usb_kill_urb(cardp->tx_urb); |
| usb_kill_urb(cardp->rx_urb); |
| |
| out: |
| lbs_deb_leave(LBS_DEB_USB); |
| return ret; |
| } |
| |
| static int if_usb_resume(struct usb_interface *intf) |
| { |
| struct if_usb_card *cardp = usb_get_intfdata(intf); |
| struct lbs_private *priv = cardp->priv; |
| |
| lbs_deb_enter(LBS_DEB_USB); |
| |
| if_usb_submit_rx_urb(cardp); |
| |
| lbs_resume(priv); |
| |
| 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, |
| .reset_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. and Red Hat, Inc."); |
| MODULE_LICENSE("GPL"); |