On Thu, 2008-07-10 at 17:15 +0200, Luis Carlos Cobo wrote:
> Signed-off-by: Luis Carlos Cobo <luisca@xxxxxxxxxxx>
> Tested-by: Javier Cardona <javier@xxxxxxxxxxx>
> ---
> drivers/net/wireless/libertastf/cmd.c | 667 +++++++++++++++++++++++++++++++++
> 1 files changed, 667 insertions(+), 0 deletions(-)
> create mode 100644 drivers/net/wireless/libertastf/cmd.c
>
> diff --git a/drivers/net/wireless/libertastf/cmd.c b/drivers/net/wireless/libertastf/cmd.c
> new file mode 100644
> index 0000000..dff20f0
> --- /dev/null
> +++ b/drivers/net/wireless/libertastf/cmd.c
> @@ -0,0 +1,667 @@
> +/*
> + * Copyright (C) 2008, cozybit Inc.
> + * Copyright (C) 2003-2006, Marvell International Ltd.
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License
Looks like the license header got truncated here; should fix that.
Other than that, looks good. I know I and Woodhouse (and maybe Holger)
touched pieces of this code (the command handling bits and RX function)
but I'm not sure if it was enough to warrant a copyright addition for
Red Hat and/or Holger at the top. Your call.
Dan
> + */
> +#include "libertastf.h"
> +
> +static const struct channel_range channel_ranges[] = {
> + { LBTF_REGDOMAIN_US, 1, 12 },
> + { LBTF_REGDOMAIN_CA, 1, 12 },
> + { LBTF_REGDOMAIN_EU, 1, 14 },
> + { LBTF_REGDOMAIN_JP, 1, 14 },
> + { LBTF_REGDOMAIN_SP, 1, 14 },
> + { LBTF_REGDOMAIN_FR, 1, 14 },
> +};
> +
> +static u16 lbtf_region_code_to_index[MRVDRV_MAX_REGION_CODE] =
> +{
> + LBTF_REGDOMAIN_US, LBTF_REGDOMAIN_CA, LBTF_REGDOMAIN_EU,
> + LBTF_REGDOMAIN_SP, LBTF_REGDOMAIN_FR, LBTF_REGDOMAIN_JP,
> +};
> +
> +static struct cmd_ctrl_node *lbtf_get_cmd_ctrl_node(struct lbtf_private *priv);
> +
> +
> +/**
> + * lbtf_cmd_copyback - Simple callback that copies response back into command
> + *
> + * @priv A pointer to struct lbtf_private structure
> + * @extra A pointer to the original command structure for which
> + * 'resp' is a response
> + * @resp A pointer to the command response
> + *
> + * Returns: 0 on success, error on failure
> + */
> +int lbtf_cmd_copyback(struct lbtf_private *priv, unsigned long extra,
> + struct cmd_header *resp)
> +{
> + struct cmd_header *buf = (void *)extra;
> + uint16_t copy_len;
> +
> + copy_len = min(le16_to_cpu(buf->size), le16_to_cpu(resp->size));
> + memcpy(buf, resp, copy_len);
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(lbtf_cmd_copyback);
> +
> +#define CHAN_TO_IDX(chan) ((chan) - 1)
> +
> +static void lbtf_geo_init(struct lbtf_private *priv)
> +{
> + const struct channel_range *range = channel_ranges;
> + u8 ch;
> + int i;
> +
> + for (i = 0; i < ARRAY_SIZE(channel_ranges); i++)
> + if (channel_ranges[i].regdomain == priv->regioncode) {
> + range = &channel_ranges[i];
> + break;
> + }
> +
> + for (ch = priv->range.start; ch < priv->range.end; ch++)
> + priv->channels[CHAN_TO_IDX(ch)].flags = 0;
> +}
> +
> +/**
> + * lbtf_update_hw_spec: Updates the hardware details.
> + *
> + * @priv A pointer to struct lbtf_private structure
> + *
> + * Returns: 0 on success, error on failure
> + */
> +int lbtf_update_hw_spec(struct lbtf_private *priv)
> +{
> + struct cmd_ds_get_hw_spec cmd;
> + int ret = -1;
> + u32 i;
> + DECLARE_MAC_BUF(mac);
> +
> + memset(&cmd, 0, sizeof(cmd));
> + cmd.hdr.size = cpu_to_le16(sizeof(cmd));
> + memcpy(cmd.permanentaddr, priv->current_addr, ETH_ALEN);
> + ret = lbtf_cmd_with_response(priv, CMD_GET_HW_SPEC, &cmd);
> + if (ret)
> + goto out;
> +
> + priv->fwcapinfo = le32_to_cpu(cmd.fwcapinfo);
> +
> + /* The firmware release is in an interesting format: the patch
> + * level is in the most significant nibble ... so fix that: */
> + priv->fwrelease = le32_to_cpu(cmd.fwrelease);
> + priv->fwrelease = (priv->fwrelease << 8) |
> + (priv->fwrelease >> 24 & 0xff);
> +
> + printk(KERN_INFO "libertastf: %s, fw %u.%u.%up%u, cap 0x%08x\n",
> + print_mac(mac, cmd.permanentaddr),
> + priv->fwrelease >> 24 & 0xff,
> + priv->fwrelease >> 16 & 0xff,
> + priv->fwrelease >> 8 & 0xff,
> + priv->fwrelease & 0xff,
> + priv->fwcapinfo);
> +
> + /* Clamp region code to 8-bit since FW spec indicates that it should
> + * only ever be 8-bit, even though the field size is 16-bit. Some
> + * firmware returns non-zero high 8 bits here.
> + */
> + priv->regioncode = le16_to_cpu(cmd.regioncode) & 0xFF;
> +
> + for (i = 0; i < MRVDRV_MAX_REGION_CODE; i++) {
> + /* use the region code to search for the index */
> + if (priv->regioncode == lbtf_region_code_to_index[i])
> + break;
> + }
> +
> + /* if it's unidentified region code, use the default (USA) */
> + if (i >= MRVDRV_MAX_REGION_CODE)
> + priv->regioncode = 0x10;
> +
> + if (priv->current_addr[0] == 0xff)
> + memmove(priv->current_addr, cmd.permanentaddr, ETH_ALEN);
> +
> + SET_IEEE80211_PERM_ADDR(priv->hw, priv->current_addr);
> +
> + lbtf_geo_init(priv);
> +out:
> + return ret;
> +}
> +
> +/**
> + * lbtf_set_channel: Set the radio channel
> + *
> + * @priv A pointer to struct lbtf_private structure
> + * @channel The desired channel, or 0 to clear a locked channel
> + *
> + * Returns: 0 on success, error on failure
> + */
> +int lbtf_set_channel(struct lbtf_private *priv, u8 channel)
> +{
> + struct cmd_ds_802_11_rf_channel cmd;
> +
> + cmd.hdr.size = cpu_to_le16(sizeof(cmd));
> + cmd.action = cpu_to_le16(CMD_OPT_802_11_RF_CHANNEL_SET);
> + cmd.channel = cpu_to_le16(channel);
> +
> + return lbtf_cmd_with_response(priv, CMD_802_11_RF_CHANNEL, &cmd);
> +}
> +
> +int lbtf_beacon_set(struct lbtf_private *priv, struct sk_buff *beacon)
> +{
> + struct cmd_ds_802_11_beacon_set cmd;
> + int size;
> +
> + if (beacon->len > MRVL_MAX_BCN_SIZE)
> + return -1;
> + size = sizeof(cmd) - sizeof(cmd.beacon) + beacon->len;
> + cmd.hdr.size = cpu_to_le16(size);
> + cmd.len = cpu_to_le16(beacon->len);
> + memcpy(cmd.beacon, (u8 *) beacon->data, beacon->len);
> +
> + lbtf_cmd_async(priv, CMD_802_11_BEACON_SET, &cmd.hdr, size);
> + return 0;
> +}
> +
> +int lbtf_beacon_ctrl(struct lbtf_private *priv, bool beacon_enable,
> + int beacon_int) {
> + struct cmd_ds_802_11_beacon_control cmd;
> +
> + cmd.hdr.size = cpu_to_le16(sizeof(cmd));
> + cmd.action = cpu_to_le16(CMD_ACT_SET);
> + cmd.beacon_enable = cpu_to_le16(beacon_enable);
> + cmd.beacon_period = cpu_to_le16(beacon_int);
> +
> + lbtf_cmd_async(priv, CMD_802_11_BEACON_CTRL, &cmd.hdr, sizeof(cmd));
> + return 0;
> +}
> +
> +static void lbtf_queue_cmd(struct lbtf_private *priv,
> + struct cmd_ctrl_node *cmdnode)
> +{
> + unsigned long flags;
> +
> + if (!cmdnode)
> + return;
> +
> + if (!cmdnode->cmdbuf->size)
> + return;
> +
> + cmdnode->result = 0;
> + spin_lock_irqsave(&priv->driver_lock, flags);
> + list_add_tail(&cmdnode->list, &priv->cmdpendingq);
> + spin_unlock_irqrestore(&priv->driver_lock, flags);
> +}
> +
> +static void lbtf_submit_command(struct lbtf_private *priv,
> + struct cmd_ctrl_node *cmdnode)
> +{
> + unsigned long flags;
> + struct cmd_header *cmd;
> + uint16_t cmdsize;
> + uint16_t command;
> + int timeo = 5 * HZ;
> + int ret;
> +
> + cmd = cmdnode->cmdbuf;
> +
> + spin_lock_irqsave(&priv->driver_lock, flags);
> + priv->cur_cmd = cmdnode;
> + cmdsize = le16_to_cpu(cmd->size);
> + command = le16_to_cpu(cmd->command);
> + ret = priv->hw_host_to_card(priv, MVMS_CMD, (u8 *) cmd, cmdsize);
> + spin_unlock_irqrestore(&priv->driver_lock, flags);
> +
> + if (ret)
> + /* Let the timer kick in and retry, and potentially reset
> + the whole thing if the condition persists */
> + timeo = HZ;
> +
> + /* Setup the timer after transmit command */
> + mod_timer(&priv->command_timer, jiffies + timeo);
> +}
> +
> +/**
> + * This function inserts command node to cmdfreeq
> + * after cleans it. Requires priv->driver_lock held.
> + */
> +static void __lbtf_cleanup_and_insert_cmd(struct lbtf_private *priv,
> + struct cmd_ctrl_node *cmdnode)
> +{
> + if (!cmdnode)
> + return;
> +
> + cmdnode->callback = NULL;
> + cmdnode->callback_arg = 0;
> +
> + memset(cmdnode->cmdbuf, 0, LBS_CMD_BUFFER_SIZE);
> +
> + list_add_tail(&cmdnode->list, &priv->cmdfreeq);
> +}
> +
> +static void lbtf_cleanup_and_insert_cmd(struct lbtf_private *priv,
> + struct cmd_ctrl_node *ptempcmd)
> +{
> + unsigned long flags;
> +
> + spin_lock_irqsave(&priv->driver_lock, flags);
> + __lbtf_cleanup_and_insert_cmd(priv, ptempcmd);
> + spin_unlock_irqrestore(&priv->driver_lock, flags);
> +}
> +
> +void lbtf_complete_command(struct lbtf_private *priv, struct cmd_ctrl_node *cmd,
> + int result)
> +{
> + cmd->result = result;
> + cmd->cmdwaitqwoken = 1;
> + wake_up_interruptible(&cmd->cmdwait_q);
> +
> + if (!cmd->callback)
> + __lbtf_cleanup_and_insert_cmd(priv, cmd);
> + priv->cur_cmd = NULL;
> +}
> +
> +int lbtf_cmd_set_mac_multicast_addr(struct lbtf_private *priv)
> +{
> + struct cmd_ds_mac_multicast_addr cmd;
> +
> + cmd.hdr.size = cpu_to_le16(sizeof(cmd));
> + cmd.action = cpu_to_le16(CMD_ACT_SET);
> +
> + cmd.nr_of_adrs = cpu_to_le16((u16) priv->nr_of_multicastmacaddr);
> + memcpy(cmd.maclist, priv->multicastlist,
> + priv->nr_of_multicastmacaddr * ETH_ALEN);
> +
> + lbtf_cmd_async(priv, CMD_MAC_MULTICAST_ADR, &cmd.hdr, sizeof(cmd));
> + return 0;
> +}
> +
> +void lbtf_set_mode(struct lbtf_private *priv, enum lbtf_mode mode)
> +{
> + struct cmd_ds_set_mode cmd;
> +
> + cmd.hdr.size = cpu_to_le16(sizeof(cmd));
> + cmd.mode = cpu_to_le16(mode);
> + lbtf_cmd_async(priv, CMD_802_11_SET_MODE, &cmd.hdr, sizeof(cmd));
> +}
> +
> +void lbtf_set_bssid(struct lbtf_private *priv, bool activate, u8 *bssid)
> +{
> + struct cmd_ds_set_bssid cmd;
> +
> + cmd.hdr.size = cpu_to_le16(sizeof(cmd));
> + cmd.activate = activate ? 1 : 0;
> + if (activate)
> + memcpy(cmd.bssid, bssid, ETH_ALEN);
> +
> + lbtf_cmd_async(priv, CMD_802_11_SET_BSSID, &cmd.hdr, sizeof(cmd));
> +}
> +
> +int lbtf_set_mac_address(struct lbtf_private *priv, uint8_t *mac_addr)
> +{
> + struct cmd_ds_802_11_mac_address cmd;
> +
> + cmd.hdr.size = cpu_to_le16(sizeof(cmd));
> + cmd.action = cpu_to_le16(CMD_ACT_SET);
> +
> + memcpy(cmd.macadd, mac_addr, ETH_ALEN);
> +
> + lbtf_cmd_async(priv, CMD_802_11_MAC_ADDRESS, &cmd.hdr, sizeof(cmd));
> + return 0;
> +}
> +
> +int lbtf_set_radio_control(struct lbtf_private *priv)
> +{
> + int ret = 0;
> + struct cmd_ds_802_11_radio_control cmd;
> +
> + cmd.hdr.size = cpu_to_le16(sizeof(cmd));
> + cmd.action = cpu_to_le16(CMD_ACT_SET);
> +
> + switch (priv->preamble) {
> + case CMD_TYPE_SHORT_PREAMBLE:
> + cmd.control = cpu_to_le16(SET_SHORT_PREAMBLE);
> + break;
> +
> + case CMD_TYPE_LONG_PREAMBLE:
> + cmd.control = cpu_to_le16(SET_LONG_PREAMBLE);
> + break;
> +
> + case CMD_TYPE_AUTO_PREAMBLE:
> + default:
> + cmd.control = cpu_to_le16(SET_AUTO_PREAMBLE);
> + break;
> + }
> +
> + if (priv->radioon)
> + cmd.control |= cpu_to_le16(TURN_ON_RF);
> + else
> + cmd.control &= cpu_to_le16(~TURN_ON_RF);
> +
> + ret = lbtf_cmd_with_response(priv, CMD_802_11_RADIO_CONTROL, &cmd);
> + return ret;
> +}
> +
> +void lbtf_set_mac_control(struct lbtf_private *priv)
> +{
> + struct cmd_ds_mac_control cmd;
> + cmd.hdr.size = cpu_to_le16(sizeof(cmd));
> + cmd.action = cpu_to_le16(priv->mac_control);
> + cmd.reserved = 0;
> +
> + lbtf_cmd_async(priv, CMD_MAC_CONTROL,
> + &cmd.hdr, sizeof(cmd));
> +}
> +
> +/**
> + * lbtf_allocate_cmd_buffer - Allocates cmd buffer, links it to free cmd queue
> + *
> + * @priv A pointer to struct lbtf_private structure
> + *
> + * Returns: 0 on success.
> + */
> +int lbtf_allocate_cmd_buffer(struct lbtf_private *priv)
> +{
> + u32 bufsize;
> + u32 i;
> + struct cmd_ctrl_node *cmdarray;
> +
> + /* Allocate and initialize the command array */
> + bufsize = sizeof(struct cmd_ctrl_node) * LBS_NUM_CMD_BUFFERS;
> + cmdarray = kzalloc(bufsize, GFP_KERNEL);
> + if (!cmdarray)
> + return -1;
> + priv->cmd_array = cmdarray;
> +
> + /* Allocate and initialize each command buffer in the command array */
> + for (i = 0; i < LBS_NUM_CMD_BUFFERS; i++) {
> + cmdarray[i].cmdbuf = kzalloc(LBS_CMD_BUFFER_SIZE, GFP_KERNEL);
> + if (!cmdarray[i].cmdbuf)
> + return -1;
> + }
> +
> + for (i = 0; i < LBS_NUM_CMD_BUFFERS; i++) {
> + init_waitqueue_head(&cmdarray[i].cmdwait_q);
> + lbtf_cleanup_and_insert_cmd(priv, &cmdarray[i]);
> + }
> + return 0;
> +}
> +
> +/**
> + * lbtf_free_cmd_buffer - Frees the cmd buffer.
> + *
> + * @priv A pointer to struct lbtf_private structure
> + *
> + * Returns: 0
> + */
> +int lbtf_free_cmd_buffer(struct lbtf_private *priv)
> +{
> + struct cmd_ctrl_node *cmdarray;
> + unsigned int i;
> +
> + /* need to check if cmd array is allocated or not */
> + if (priv->cmd_array == NULL)
> + return 0;
> +
> + cmdarray = priv->cmd_array;
> +
> + /* Release shared memory buffers */
> + for (i = 0; i < LBS_NUM_CMD_BUFFERS; i++) {
> + kfree(cmdarray[i].cmdbuf);
> + cmdarray[i].cmdbuf = NULL;
> + }
> +
> + /* Release cmd_ctrl_node */
> + kfree(priv->cmd_array);
> + priv->cmd_array = NULL;
> +
> + return 0;
> +}
> +
> +/**
> + * lbtf_get_cmd_ctrl_node - Gets free cmd node from free cmd queue.
> + *
> + * @priv A pointer to struct lbtf_private structure
> + *
> + * Returns: pointer to a struct cmd_ctrl_node or NULL if none available.
> + */
> +static struct cmd_ctrl_node *lbtf_get_cmd_ctrl_node(struct lbtf_private *priv)
> +{
> + struct cmd_ctrl_node *tempnode;
> + unsigned long flags;
> +
> + if (!priv)
> + return NULL;
> +
> + spin_lock_irqsave(&priv->driver_lock, flags);
> +
> + if (!list_empty(&priv->cmdfreeq)) {
> + tempnode = list_first_entry(&priv->cmdfreeq,
> + struct cmd_ctrl_node, list);
> + list_del(&tempnode->list);
> + } else
> + tempnode = NULL;
> +
> + spin_unlock_irqrestore(&priv->driver_lock, flags);
> +
> + return tempnode;
> +}
> +
> +/**
> + * lbtf_execute_next_command: execute next command in cmd pending queue.
> + *
> + * @priv A pointer to struct lbtf_private structure
> + *
> + * Returns: 0 on success.
> + */
> +int lbtf_execute_next_command(struct lbtf_private *priv)
> +{
> + struct cmd_ctrl_node *cmdnode = NULL;
> + struct cmd_header *cmd;
> + unsigned long flags;
> +
> + /* Debug group is LBS_DEB_THREAD and not LBS_DEB_HOST, because the
> + * only caller to us is lbtf_thread() and we get even when a
> + * data packet is received */
> +
> + spin_lock_irqsave(&priv->driver_lock, flags);
> +
> + if (priv->cur_cmd) {
> + spin_unlock_irqrestore(&priv->driver_lock, flags);
> + return -1;
> + }
> +
> + if (!list_empty(&priv->cmdpendingq)) {
> + cmdnode = list_first_entry(&priv->cmdpendingq,
> + struct cmd_ctrl_node, list);
> + }
> +
> + if (cmdnode) {
> + cmd = cmdnode->cmdbuf;
> +
> + list_del(&cmdnode->list);
> + spin_unlock_irqrestore(&priv->driver_lock, flags);
> + lbtf_submit_command(priv, cmdnode);
> + } else
> + spin_unlock_irqrestore(&priv->driver_lock, flags);
> + return 0;
> +}
> +
> +static struct cmd_ctrl_node *__lbtf_cmd_async(struct lbtf_private *priv,
> + uint16_t command, struct cmd_header *in_cmd, int in_cmd_size,
> + int (*callback)(struct lbtf_private *, unsigned long,
> + struct cmd_header *),
> + unsigned long callback_arg)
> +{
> + struct cmd_ctrl_node *cmdnode;
> +
> + if (priv->surpriseremoved)
> + return ERR_PTR(-ENOENT);
> +
> + cmdnode = lbtf_get_cmd_ctrl_node(priv);
> + if (cmdnode == NULL) {
> + /* Wake up main thread to execute next command */
> + queue_work(lbtf_wq, &priv->cmd_work);
> + return ERR_PTR(-ENOBUFS);
> + }
> +
> + cmdnode->callback = callback;
> + cmdnode->callback_arg = callback_arg;
> +
> + /* Copy the incoming command to the buffer */
> + memcpy(cmdnode->cmdbuf, in_cmd, in_cmd_size);
> +
> + /* Set sequence number, clean result, move to buffer */
> + priv->seqnum++;
> + cmdnode->cmdbuf->command = cpu_to_le16(command);
> + cmdnode->cmdbuf->size = cpu_to_le16(in_cmd_size);
> + cmdnode->cmdbuf->seqnum = cpu_to_le16(priv->seqnum);
> + cmdnode->cmdbuf->result = 0;
> + cmdnode->cmdwaitqwoken = 0;
> + lbtf_queue_cmd(priv, cmdnode);
> + queue_work(lbtf_wq, &priv->cmd_work);
> +
> + return cmdnode;
> +}
> +
> +void lbtf_cmd_async(struct lbtf_private *priv, uint16_t command,
> + struct cmd_header *in_cmd, int in_cmd_size)
> +{
> + __lbtf_cmd_async(priv, command, in_cmd, in_cmd_size, NULL, 0);
> +}
> +
> +int __lbtf_cmd(struct lbtf_private *priv, uint16_t command,
> + struct cmd_header *in_cmd, int in_cmd_size,
> + int (*callback)(struct lbtf_private *,
> + unsigned long, struct cmd_header *),
> + unsigned long callback_arg)
> +{
> + struct cmd_ctrl_node *cmdnode;
> + unsigned long flags;
> + int ret = 0;
> +
> + cmdnode = __lbtf_cmd_async(priv, command, in_cmd, in_cmd_size,
> + callback, callback_arg);
> + if (IS_ERR(cmdnode))
> + return PTR_ERR(cmdnode);
> +
> + might_sleep();
> + ret = wait_event_interruptible(cmdnode->cmdwait_q,
> + cmdnode->cmdwaitqwoken);
> + if (ret) {
> + printk(KERN_DEBUG
> + "libertastf: command 0x%04x interrupted by signal",
> + command);
> + return ret;
> + }
> +
> + spin_lock_irqsave(&priv->driver_lock, flags);
> + ret = cmdnode->result;
> + if (ret)
> + printk(KERN_DEBUG "libertastf: command 0x%04x failed: %d\n",
> + command, ret);
> +
> + __lbtf_cleanup_and_insert_cmd(priv, cmdnode);
> + spin_unlock_irqrestore(&priv->driver_lock, flags);
> +
> + return ret;
> +}
> +EXPORT_SYMBOL_GPL(__lbtf_cmd);
> +
> +/* Call holding driver_lock */
> +void lbtf_cmd_response_rx(struct lbtf_private *priv)
> +{
> + priv->cmd_response_rxed = 1;
> + queue_work(lbtf_wq, &priv->cmd_work);
> +}
> +EXPORT_SYMBOL_GPL(lbtf_cmd_response_rx);
> +
> +int lbtf_process_rx_command(struct lbtf_private *priv)
> +{
> + uint16_t respcmd, curcmd;
> + struct cmd_header *resp;
> + int ret = 0;
> + unsigned long flags;
> + uint16_t result;
> +
> + mutex_lock(&priv->lock);
> + spin_lock_irqsave(&priv->driver_lock, flags);
> +
> + if (!priv->cur_cmd) {
> + ret = -1;
> + spin_unlock_irqrestore(&priv->driver_lock, flags);
> + goto done;
> + }
> +
> + resp = (void *)priv->cmd_resp_buff;
> + curcmd = le16_to_cpu(priv->cur_cmd->cmdbuf->command);
> + respcmd = le16_to_cpu(resp->command);
> + result = le16_to_cpu(resp->result);
> +
> + printk(KERN_DEBUG "libertastf: cmd response 0x%04x, seq %d, size %d\n",
> + respcmd, le16_to_cpu(resp->seqnum),
> + le16_to_cpu(resp->size));
> +
> + if (resp->seqnum != priv->cur_cmd->cmdbuf->seqnum) {
> + spin_unlock_irqrestore(&priv->driver_lock, flags);
> + ret = -1;
> + goto done;
> + }
> + if (respcmd != CMD_RET(curcmd)) {
> + spin_unlock_irqrestore(&priv->driver_lock, flags);
> + ret = -1;
> + goto done;
> + }
> +
> + if (resp->result == cpu_to_le16(0x0004)) {
> + /* 0x0004 means -EAGAIN. Drop the response, let it time out
> + and be resubmitted */
> + spin_unlock_irqrestore(&priv->driver_lock, flags);
> + ret = -1;
> + goto done;
> + }
> +
> + /* Now we got response from FW, cancel the command timer */
> + del_timer(&priv->command_timer);
> + priv->cmd_timed_out = 0;
> + if (priv->nr_retries)
> + priv->nr_retries = 0;
> +
> + /* If the command is not successful, cleanup and return failure */
> + if ((result != 0 || !(respcmd & 0x8000))) {
> + /*
> + * Handling errors here
> + */
> + switch (respcmd) {
> + case CMD_RET(CMD_GET_HW_SPEC):
> + case CMD_RET(CMD_802_11_RESET):
> + printk(KERN_DEBUG "libertastf: reset failed\n");
> + break;
> +
> + }
> + lbtf_complete_command(priv, priv->cur_cmd, result);
> + spin_unlock_irqrestore(&priv->driver_lock, flags);
> +
> + ret = -1;
> + goto done;
> + }
> +
> + spin_unlock_irqrestore(&priv->driver_lock, flags);
> +
> + if (priv->cur_cmd && priv->cur_cmd->callback) {
> + ret = priv->cur_cmd->callback(priv, priv->cur_cmd->callback_arg,
> + resp);
> + }
> + spin_lock_irqsave(&priv->driver_lock, flags);
> +
> + if (priv->cur_cmd) {
> + /* Clean up and Put current command back to cmdfreeq */
> + lbtf_complete_command(priv, priv->cur_cmd, result);
> + }
> + spin_unlock_irqrestore(&priv->driver_lock, flags);
> +
> +done:
> + mutex_unlock(&priv->lock);
> + return ret;
> +}
--
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