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- /*
- * This file contains functions used in USB interface module.
- */
- #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
- #include <linux/delay.h>
- #include <linux/module.h>
- #include <linux/firmware.h>
- #include <linux/netdevice.h>
- #include <linux/slab.h>
- #include <linux/usb.h>
- #include <linux/olpc-ec.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
- MODULE_FIRMWARE("libertas/usb8388_v9.bin");
- MODULE_FIRMWARE("libertas/usb8388_v5.bin");
- MODULE_FIRMWARE("libertas/usb8388.bin");
- MODULE_FIRMWARE("libertas/usb8682.bin");
- MODULE_FIRMWARE("usb8388.bin");
- enum {
- MODEL_UNKNOWN = 0x0,
- MODEL_8388 = 0x1,
- MODEL_8682 = 0x2
- };
- /* table of firmware file names */
- static const struct lbs_fw_table fw_table[] = {
- { MODEL_8388, "libertas/usb8388_olpc.bin", NULL },
- { MODEL_8388, "libertas/usb8388_v9.bin", NULL },
- { MODEL_8388, "libertas/usb8388_v5.bin", NULL },
- { MODEL_8388, "libertas/usb8388.bin", NULL },
- { MODEL_8388, "usb8388.bin", NULL },
- { MODEL_8682, "libertas/usb8682.bin", NULL },
- { 0, NULL, NULL }
- };
- static const struct usb_device_id if_usb_table[] = {
- /* Enter the device signature inside */
- { USB_DEVICE(0x1286, 0x2001), .driver_info = MODEL_8388 },
- { USB_DEVICE(0x05a3, 0x8388), .driver_info = MODEL_8388 },
- {} /* 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 void if_usb_prog_firmware(struct lbs_private *priv, int ret,
- const struct firmware *fw,
- const struct firmware *unused);
- 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);
- /**
- * if_usb_write_bulk_callback - callback function to handle the status
- * of the URB
- * @urb: pointer to &urb structure
- * returns: 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 */
- pr_info("URB in failure status: %d\n", urb->status);
- }
- }
- /**
- * if_usb_free - free tx/rx urb, skb and rx buffer
- * @cardp: pointer to &if_usb_card
- * returns: N/A
- */
- static void if_usb_free(struct if_usb_card *cardp)
- {
- /* 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;
- }
- 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)) {
- netdev_info(priv->dev, "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;
- netdev_info(priv->dev,
- "Firmware doesn't wake via command interrupt; disabling PS mode\n");
- }
- }
- }
- static void if_usb_fw_timeo(struct timer_list *t)
- {
- struct if_usb_card *cardp = from_timer(cardp, t, fw_timeout);
- if (cardp->fwdnldover) {
- lbs_deb_usb("Download complete, no event. Assuming success\n");
- } else {
- 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
- /**
- * if_usb_probe - sets the configuration values
- * @intf: &usb_interface pointer
- * @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 lbs_private *priv;
- struct if_usb_card *cardp;
- int r = -ENOMEM;
- int i;
- udev = interface_to_usbdev(intf);
- cardp = kzalloc(sizeof(struct if_usb_card), GFP_KERNEL);
- if (!cardp)
- goto error;
- timer_setup(&cardp->fw_timeout, if_usb_fw_timeo, 0);
- init_waitqueue_head(&cardp->fw_wq);
- cardp->udev = udev;
- cardp->model = (uint32_t) id->driver_info;
- 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;
- }
- if (!(priv = lbs_add_card(cardp, &intf->dev)))
- goto err_add_card;
- cardp->priv = priv;
- priv->hw_host_to_card = if_usb_host_to_card;
- priv->enter_deep_sleep = NULL;
- priv->exit_deep_sleep = NULL;
- priv->reset_deep_sleep_wakeup = NULL;
- priv->is_polling = false;
- #ifdef CONFIG_OLPC
- if (machine_is_olpc())
- priv->reset_card = if_usb_reset_olpc_card;
- #endif
- cardp->boot2_version = udev->descriptor.bcdDevice;
- usb_get_dev(udev);
- usb_set_intfdata(intf, cardp);
- r = lbs_get_firmware_async(priv, &udev->dev, cardp->model,
- fw_table, if_usb_prog_firmware);
- if (r)
- goto err_get_fw;
- return 0;
- err_get_fw:
- lbs_remove_card(priv);
- err_add_card:
- if_usb_reset_device(cardp);
- dealloc:
- if_usb_free(cardp);
- error:
- return r;
- }
- /**
- * if_usb_disconnect - free resource and cleanup
- * @intf: USB interface structure
- * returns: N/A
- */
- static void if_usb_disconnect(struct usb_interface *intf)
- {
- struct if_usb_card *cardp = usb_get_intfdata(intf);
- struct lbs_private *priv = cardp->priv;
- cardp->surprise_removed = 1;
- if (priv) {
- 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));
- }
- /**
- * if_usb_send_fw_pkt - download FW
- * @cardp: pointer to &struct if_usb_card
- * returns: 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_header *cmd = cardp->ep_out_buf + 4;
- int ret;
- *(__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(cmd));
- 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
- return ret;
- }
- /**
- * usb_tx_block - transfer the data to the device
- * @cardp: pointer to &struct if_usb_card
- * @payload: pointer to payload data
- * @nb: data length
- * returns: 0 for success or negative error code
- */
- static int usb_tx_block(struct if_usb_card *cardp, uint8_t *payload, uint16_t nb)
- {
- int ret;
- /* check if device is removed */
- if (cardp->surprise_removed) {
- lbs_deb_usbd(&cardp->udev->dev, "Device removed\n");
- ret = -ENODEV;
- 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);
- } 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))) {
- 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),
- skb->data + IPFIELD_ALIGN_OFFSET,
- MRVDRV_ETH_RX_PACKET_BUFFER_SIZE, callbackfn,
- cardp);
- 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)) {
- 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)
- 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(bootcmdresp.magic));
- }
- } else if ((bootcmdresp.cmd != BOOT_CMD_FW_BY_USB) &&
- (bootcmdresp.cmd != BOOT_CMD_UPDATE_FW) &&
- (bootcmdresp.cmd != BOOT_CMD_UPDATE_BOOT2)) {
- pr_info("boot cmd response cmd_tag error (%d)\n",
- bootcmdresp.cmd);
- } else if (bootcmdresp.result != BOOT_CMD_RESP_OK) {
- 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 = kmemdup(skb->data + IPFIELD_ALIGN_OFFSET,
- sizeof(struct fwsyncheader), GFP_ATOMIC);
- if (!syncfwheader) {
- lbs_deb_usbd(&cardp->udev->dev, "Failure to allocate syncfwheader\n");
- kfree_skb(skb);
- return;
- }
- 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);
- }
- #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)
- {
- unsigned long flags;
- 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;
- }
- spin_lock_irqsave(&priv->driver_lock, flags);
- 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_irqrestore(&priv->driver_lock, flags);
- lbs_deb_usbd(&cardp->udev->dev,
- "Wake up main thread to handle cmd response\n");
- }
- /**
- * if_usb_receive - read the packet into the upload buffer,
- * wake up the main thread and initialise the Rx callack
- *
- * @urb: pointer to &struct urb
- * returns: 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;
- 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);
- 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 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);
- }
- /**
- * if_usb_host_to_card - downloads data to FW
- * @priv: pointer to &struct lbs_private structure
- * @type: type of data
- * @payload: pointer to data buffer
- * @nb: number of bytes
- * returns: 0 for success or negative error code
- */
- 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);
- }
- /**
- * if_usb_issue_boot_command - issues Boot command to the Boot2 code
- * @cardp: pointer to &if_usb_card
- * @ivalue: 1:Boot from FW by USB-Download
- * 2:Boot from FW in EEPROM
- * returns: 0 for success or negative error code
- */
- 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;
- }
- /**
- * check_fwfile_format - check the validity of Boot2/FW image
- *
- * @data: pointer to image
- * @totlen: image length
- * returns: 0 (good) or 1 (failure)
- */
- 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)
- pr_err("firmware file format check FAIL\n");
- else
- lbs_deb_fw("firmware file format check PASS\n");
- return ret;
- }
- static void if_usb_prog_firmware(struct lbs_private *priv, int ret,
- const struct firmware *fw,
- const struct firmware *unused)
- {
- struct if_usb_card *cardp = priv->card;
- int i = 0;
- static int reset_count = 10;
- if (ret) {
- pr_err("failed to find firmware (%d)\n", ret);
- goto done;
- }
- cardp->fw = fw;
- if (check_fwfile_format(cardp->fw->data, cardp->fw->size)) {
- ret = -EINVAL;
- goto done;
- }
- /* 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 done;
- }
- cardp->bootcmdresp = 0;
- do {
- int j = 0;
- i++;
- 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 == 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 done;
- } else if (cardp->bootcmdresp <= 0) {
- if (--reset_count >= 0) {
- if_usb_reset_device(cardp);
- goto restart;
- }
- ret = -EIO;
- goto done;
- }
- 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) {
- 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 = -EIO;
- goto done;
- }
- cardp->priv->fw_ready = 1;
- if_usb_submit_rx_urb(cardp);
- if (lbs_start_card(priv))
- goto done;
- if_usb_setup_firmware(priv);
- /*
- * EHS_REMOVE_WAKEUP is not supported on all versions of the firmware.
- */
- priv->wol_criteria = EHS_REMOVE_WAKEUP;
- if (lbs_host_sleep_cfg(priv, priv->wol_criteria, NULL))
- priv->ehs_remove_supported = false;
- done:
- cardp->fw = NULL;
- }
- #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;
- if (priv->psstate != PS_STATE_FULL_POWER) {
- ret = -1;
- goto out;
- }
- #ifdef CONFIG_OLPC
- if (machine_is_olpc()) {
- if (priv->wol_criteria == EHS_REMOVE_WAKEUP)
- olpc_ec_wakeup_clear(EC_SCI_SRC_WLAN);
- else
- olpc_ec_wakeup_set(EC_SCI_SRC_WLAN);
- }
- #endif
- 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:
- 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;
- if_usb_submit_rx_urb(cardp);
- lbs_resume(priv);
- 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,
- .disable_hub_initiated_lpm = 1,
- };
- module_usb_driver(if_usb_driver);
- MODULE_DESCRIPTION("8388 USB WLAN Driver");
- MODULE_AUTHOR("Marvell International Ltd. and Red Hat, Inc.");
- MODULE_LICENSE("GPL");
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