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path: root/drivers/net/wireless/marvell/libertas/if_usb.c
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Diffstat (limited to 'drivers/net/wireless/marvell/libertas/if_usb.c')
-rw-r--r--drivers/net/wireless/marvell/libertas/if_usb.c998
1 files changed, 998 insertions, 0 deletions
diff --git a/drivers/net/wireless/marvell/libertas/if_usb.c b/drivers/net/wireless/marvell/libertas/if_usb.c
new file mode 100644
index 0000000..9363103
--- /dev/null
+++ b/drivers/net/wireless/marvell/libertas/if_usb.c
@@ -0,0 +1,998 @@
+/*
+ * 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 }
+};
+
+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(unsigned long priv)
+{
+ struct if_usb_card *cardp = (void *)priv;
+
+ 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;
+
+ setup_timer(&cardp->fw_timeout, if_usb_fw_timeo, (unsigned long)cardp);
+ 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);
+
+ 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)) {
+ 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)
+{
+ 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");
+}
+
+/**
+ * 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;
+ }
+
+#if LINUX_VERSION_IS_GEQ(3,1,0)
+#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
+#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,
+#if LINUX_VERSION_IS_GEQ(3,5,0)
+ .disable_hub_initiated_lpm = 1,
+#endif
+};
+
+module_usb_driver(if_usb_driver);
+
+MODULE_DESCRIPTION("8388 USB WLAN Driver");
+MODULE_AUTHOR("Marvell International Ltd. and Red Hat, Inc.");
+MODULE_LICENSE("GPL");
generated by cgit v1.2.3 (git 2.0.4) at 2024-04-25 16:53:31 +0000