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802 lines
20 KiB
802 lines
20 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* Copyright (C) 2008, cozybit Inc. |
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* Copyright (C) 2003-2006, Marvell International Ltd. |
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*/ |
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
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|
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#include <linux/hardirq.h> |
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#include <linux/slab.h> |
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#include <linux/export.h> |
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#include "libertas_tf.h" |
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static const struct channel_range channel_ranges[] = { |
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{ LBTF_REGDOMAIN_US, 1, 12 }, |
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{ LBTF_REGDOMAIN_CA, 1, 12 }, |
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{ LBTF_REGDOMAIN_EU, 1, 14 }, |
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{ LBTF_REGDOMAIN_JP, 1, 14 }, |
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{ LBTF_REGDOMAIN_SP, 1, 14 }, |
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{ LBTF_REGDOMAIN_FR, 1, 14 }, |
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}; |
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static u16 lbtf_region_code_to_index[MRVDRV_MAX_REGION_CODE] = |
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{ |
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LBTF_REGDOMAIN_US, LBTF_REGDOMAIN_CA, LBTF_REGDOMAIN_EU, |
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LBTF_REGDOMAIN_SP, LBTF_REGDOMAIN_FR, LBTF_REGDOMAIN_JP, |
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}; |
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static struct cmd_ctrl_node *lbtf_get_cmd_ctrl_node(struct lbtf_private *priv); |
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/** |
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* lbtf_cmd_copyback - Simple callback that copies response back into command |
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* |
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* @priv: A pointer to struct lbtf_private structure |
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* @extra: A pointer to the original command structure for which |
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* 'resp' is a response |
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* @resp: A pointer to the command response |
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* |
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* Returns: 0 on success, error on failure |
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*/ |
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int lbtf_cmd_copyback(struct lbtf_private *priv, unsigned long extra, |
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struct cmd_header *resp) |
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{ |
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struct cmd_header *buf = (void *)extra; |
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uint16_t copy_len; |
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copy_len = min(le16_to_cpu(buf->size), le16_to_cpu(resp->size)); |
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memcpy(buf, resp, copy_len); |
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return 0; |
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} |
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EXPORT_SYMBOL_GPL(lbtf_cmd_copyback); |
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#define CHAN_TO_IDX(chan) ((chan) - 1) |
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static void lbtf_geo_init(struct lbtf_private *priv) |
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{ |
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const struct channel_range *range = channel_ranges; |
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u8 ch; |
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int i; |
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for (i = 0; i < ARRAY_SIZE(channel_ranges); i++) |
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if (channel_ranges[i].regdomain == priv->regioncode) { |
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range = &channel_ranges[i]; |
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break; |
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} |
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for (ch = range->start; ch < range->end; ch++) |
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priv->channels[CHAN_TO_IDX(ch)].flags = 0; |
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} |
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/** |
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* lbtf_update_hw_spec: Updates the hardware details. |
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* |
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* @priv: A pointer to struct lbtf_private structure |
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* |
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* Returns: 0 on success, error on failure |
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*/ |
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int lbtf_update_hw_spec(struct lbtf_private *priv) |
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{ |
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struct cmd_ds_get_hw_spec cmd; |
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int ret = -1; |
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u32 i; |
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lbtf_deb_enter(LBTF_DEB_CMD); |
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memset(&cmd, 0, sizeof(cmd)); |
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cmd.hdr.size = cpu_to_le16(sizeof(cmd)); |
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memcpy(cmd.permanentaddr, priv->current_addr, ETH_ALEN); |
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ret = lbtf_cmd_with_response(priv, CMD_GET_HW_SPEC, &cmd); |
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if (ret) |
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goto out; |
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priv->fwcapinfo = le32_to_cpu(cmd.fwcapinfo); |
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/* The firmware release is in an interesting format: the patch |
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* level is in the most significant nibble ... so fix that: */ |
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priv->fwrelease = le32_to_cpu(cmd.fwrelease); |
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priv->fwrelease = (priv->fwrelease << 8) | |
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(priv->fwrelease >> 24 & 0xff); |
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printk(KERN_INFO "libertastf: %pM, fw %u.%u.%up%u, cap 0x%08x\n", |
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cmd.permanentaddr, |
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priv->fwrelease >> 24 & 0xff, |
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priv->fwrelease >> 16 & 0xff, |
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priv->fwrelease >> 8 & 0xff, |
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priv->fwrelease & 0xff, |
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priv->fwcapinfo); |
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lbtf_deb_cmd("GET_HW_SPEC: hardware interface 0x%x, hardware spec 0x%04x\n", |
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cmd.hwifversion, cmd.version); |
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/* Clamp region code to 8-bit since FW spec indicates that it should |
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* only ever be 8-bit, even though the field size is 16-bit. Some |
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* firmware returns non-zero high 8 bits here. |
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*/ |
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priv->regioncode = le16_to_cpu(cmd.regioncode) & 0xFF; |
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for (i = 0; i < MRVDRV_MAX_REGION_CODE; i++) { |
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/* use the region code to search for the index */ |
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if (priv->regioncode == lbtf_region_code_to_index[i]) |
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break; |
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} |
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/* if it's unidentified region code, use the default (USA) */ |
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if (i >= MRVDRV_MAX_REGION_CODE) { |
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priv->regioncode = 0x10; |
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pr_info("unidentified region code; using the default (USA)\n"); |
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} |
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if (priv->current_addr[0] == 0xff) |
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memmove(priv->current_addr, cmd.permanentaddr, ETH_ALEN); |
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SET_IEEE80211_PERM_ADDR(priv->hw, priv->current_addr); |
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lbtf_geo_init(priv); |
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out: |
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lbtf_deb_leave(LBTF_DEB_CMD); |
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return ret; |
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} |
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/** |
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* lbtf_set_channel: Set the radio channel |
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* |
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* @priv: A pointer to struct lbtf_private structure |
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* @channel: The desired channel, or 0 to clear a locked channel |
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* |
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* Returns: 0 on success, error on failure |
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*/ |
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int lbtf_set_channel(struct lbtf_private *priv, u8 channel) |
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{ |
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int ret = 0; |
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struct cmd_ds_802_11_rf_channel cmd; |
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lbtf_deb_enter(LBTF_DEB_CMD); |
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cmd.hdr.size = cpu_to_le16(sizeof(cmd)); |
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cmd.action = cpu_to_le16(CMD_OPT_802_11_RF_CHANNEL_SET); |
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cmd.channel = cpu_to_le16(channel); |
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ret = lbtf_cmd_with_response(priv, CMD_802_11_RF_CHANNEL, &cmd); |
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lbtf_deb_leave_args(LBTF_DEB_CMD, "ret %d", ret); |
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return ret; |
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} |
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int lbtf_beacon_set(struct lbtf_private *priv, struct sk_buff *beacon) |
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{ |
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struct cmd_ds_802_11_beacon_set cmd; |
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int size; |
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lbtf_deb_enter(LBTF_DEB_CMD); |
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if (beacon->len > MRVL_MAX_BCN_SIZE) { |
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lbtf_deb_leave_args(LBTF_DEB_CMD, "ret %d", -1); |
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return -1; |
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} |
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size = sizeof(cmd) - sizeof(cmd.beacon) + beacon->len; |
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cmd.hdr.size = cpu_to_le16(size); |
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cmd.len = cpu_to_le16(beacon->len); |
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memcpy(cmd.beacon, (u8 *) beacon->data, beacon->len); |
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lbtf_cmd_async(priv, CMD_802_11_BEACON_SET, &cmd.hdr, size); |
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lbtf_deb_leave_args(LBTF_DEB_CMD, "ret %d", 0); |
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return 0; |
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} |
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int lbtf_beacon_ctrl(struct lbtf_private *priv, bool beacon_enable, |
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int beacon_int) |
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{ |
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struct cmd_ds_802_11_beacon_control cmd; |
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lbtf_deb_enter(LBTF_DEB_CMD); |
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cmd.hdr.size = cpu_to_le16(sizeof(cmd)); |
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cmd.action = cpu_to_le16(CMD_ACT_SET); |
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cmd.beacon_enable = cpu_to_le16(beacon_enable); |
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cmd.beacon_period = cpu_to_le16(beacon_int); |
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lbtf_cmd_async(priv, CMD_802_11_BEACON_CTRL, &cmd.hdr, sizeof(cmd)); |
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lbtf_deb_leave(LBTF_DEB_CMD); |
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return 0; |
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} |
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static void lbtf_queue_cmd(struct lbtf_private *priv, |
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struct cmd_ctrl_node *cmdnode) |
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{ |
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unsigned long flags; |
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lbtf_deb_enter(LBTF_DEB_HOST); |
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if (!cmdnode) { |
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lbtf_deb_host("QUEUE_CMD: cmdnode is NULL\n"); |
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goto qcmd_done; |
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} |
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if (!cmdnode->cmdbuf->size) { |
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lbtf_deb_host("DNLD_CMD: cmd size is zero\n"); |
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goto qcmd_done; |
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} |
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cmdnode->result = 0; |
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spin_lock_irqsave(&priv->driver_lock, flags); |
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list_add_tail(&cmdnode->list, &priv->cmdpendingq); |
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spin_unlock_irqrestore(&priv->driver_lock, flags); |
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lbtf_deb_host("QUEUE_CMD: inserted command 0x%04x into cmdpendingq\n", |
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le16_to_cpu(cmdnode->cmdbuf->command)); |
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qcmd_done: |
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lbtf_deb_leave(LBTF_DEB_HOST); |
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} |
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static void lbtf_submit_command(struct lbtf_private *priv, |
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struct cmd_ctrl_node *cmdnode) |
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{ |
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unsigned long flags; |
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struct cmd_header *cmd; |
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uint16_t cmdsize; |
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uint16_t command; |
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int timeo = 5 * HZ; |
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int ret; |
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lbtf_deb_enter(LBTF_DEB_HOST); |
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cmd = cmdnode->cmdbuf; |
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spin_lock_irqsave(&priv->driver_lock, flags); |
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priv->cur_cmd = cmdnode; |
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cmdsize = le16_to_cpu(cmd->size); |
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command = le16_to_cpu(cmd->command); |
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lbtf_deb_cmd("DNLD_CMD: command 0x%04x, seq %d, size %d\n", |
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command, le16_to_cpu(cmd->seqnum), cmdsize); |
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lbtf_deb_hex(LBTF_DEB_CMD, "DNLD_CMD", (void *) cmdnode->cmdbuf, cmdsize); |
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ret = priv->ops->hw_host_to_card(priv, MVMS_CMD, (u8 *)cmd, cmdsize); |
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spin_unlock_irqrestore(&priv->driver_lock, flags); |
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if (ret) { |
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pr_info("DNLD_CMD: hw_host_to_card failed: %d\n", ret); |
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/* Let the timer kick in and retry, and potentially reset |
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the whole thing if the condition persists */ |
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timeo = HZ; |
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} |
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/* Setup the timer after transmit command */ |
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mod_timer(&priv->command_timer, jiffies + timeo); |
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lbtf_deb_leave(LBTF_DEB_HOST); |
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} |
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/* |
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* This function inserts command node to cmdfreeq |
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* after cleans it. Requires priv->driver_lock held. |
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*/ |
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static void __lbtf_cleanup_and_insert_cmd(struct lbtf_private *priv, |
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struct cmd_ctrl_node *cmdnode) |
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{ |
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lbtf_deb_enter(LBTF_DEB_HOST); |
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if (!cmdnode) |
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goto cl_ins_out; |
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cmdnode->callback = NULL; |
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cmdnode->callback_arg = 0; |
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memset(cmdnode->cmdbuf, 0, LBS_CMD_BUFFER_SIZE); |
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list_add_tail(&cmdnode->list, &priv->cmdfreeq); |
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cl_ins_out: |
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lbtf_deb_leave(LBTF_DEB_HOST); |
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} |
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static void lbtf_cleanup_and_insert_cmd(struct lbtf_private *priv, |
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struct cmd_ctrl_node *ptempcmd) |
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{ |
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unsigned long flags; |
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spin_lock_irqsave(&priv->driver_lock, flags); |
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__lbtf_cleanup_and_insert_cmd(priv, ptempcmd); |
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spin_unlock_irqrestore(&priv->driver_lock, flags); |
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} |
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void lbtf_complete_command(struct lbtf_private *priv, struct cmd_ctrl_node *cmd, |
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int result) |
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{ |
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cmd->result = result; |
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cmd->cmdwaitqwoken = 1; |
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wake_up_interruptible(&cmd->cmdwait_q); |
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if (!cmd->callback) |
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__lbtf_cleanup_and_insert_cmd(priv, cmd); |
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priv->cur_cmd = NULL; |
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} |
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int lbtf_cmd_set_mac_multicast_addr(struct lbtf_private *priv) |
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{ |
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struct cmd_ds_mac_multicast_addr cmd; |
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lbtf_deb_enter(LBTF_DEB_CMD); |
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cmd.hdr.size = cpu_to_le16(sizeof(cmd)); |
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cmd.action = cpu_to_le16(CMD_ACT_SET); |
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cmd.nr_of_adrs = cpu_to_le16((u16) priv->nr_of_multicastmacaddr); |
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lbtf_deb_cmd("MULTICAST_ADR: setting %d addresses\n", cmd.nr_of_adrs); |
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memcpy(cmd.maclist, priv->multicastlist, |
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priv->nr_of_multicastmacaddr * ETH_ALEN); |
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lbtf_cmd_async(priv, CMD_MAC_MULTICAST_ADR, &cmd.hdr, sizeof(cmd)); |
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lbtf_deb_leave(LBTF_DEB_CMD); |
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return 0; |
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} |
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void lbtf_set_mode(struct lbtf_private *priv, enum lbtf_mode mode) |
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{ |
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struct cmd_ds_set_mode cmd; |
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lbtf_deb_enter(LBTF_DEB_WEXT); |
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cmd.hdr.size = cpu_to_le16(sizeof(cmd)); |
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cmd.mode = cpu_to_le16(mode); |
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lbtf_deb_wext("Switching to mode: 0x%x\n", mode); |
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lbtf_cmd_async(priv, CMD_802_11_SET_MODE, &cmd.hdr, sizeof(cmd)); |
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lbtf_deb_leave(LBTF_DEB_WEXT); |
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} |
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void lbtf_set_bssid(struct lbtf_private *priv, bool activate, const u8 *bssid) |
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{ |
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struct cmd_ds_set_bssid cmd; |
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lbtf_deb_enter(LBTF_DEB_CMD); |
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cmd.hdr.size = cpu_to_le16(sizeof(cmd)); |
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cmd.activate = activate ? 1 : 0; |
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if (activate) |
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memcpy(cmd.bssid, bssid, ETH_ALEN); |
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lbtf_cmd_async(priv, CMD_802_11_SET_BSSID, &cmd.hdr, sizeof(cmd)); |
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lbtf_deb_leave(LBTF_DEB_CMD); |
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} |
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int lbtf_set_mac_address(struct lbtf_private *priv, uint8_t *mac_addr) |
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{ |
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struct cmd_ds_802_11_mac_address cmd; |
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lbtf_deb_enter(LBTF_DEB_CMD); |
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cmd.hdr.size = cpu_to_le16(sizeof(cmd)); |
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cmd.action = cpu_to_le16(CMD_ACT_SET); |
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memcpy(cmd.macadd, mac_addr, ETH_ALEN); |
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lbtf_cmd_async(priv, CMD_802_11_MAC_ADDRESS, &cmd.hdr, sizeof(cmd)); |
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lbtf_deb_leave(LBTF_DEB_CMD); |
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return 0; |
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} |
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int lbtf_set_radio_control(struct lbtf_private *priv) |
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{ |
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int ret = 0; |
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struct cmd_ds_802_11_radio_control cmd; |
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lbtf_deb_enter(LBTF_DEB_CMD); |
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cmd.hdr.size = cpu_to_le16(sizeof(cmd)); |
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cmd.action = cpu_to_le16(CMD_ACT_SET); |
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switch (priv->preamble) { |
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case CMD_TYPE_SHORT_PREAMBLE: |
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cmd.control = cpu_to_le16(SET_SHORT_PREAMBLE); |
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break; |
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case CMD_TYPE_LONG_PREAMBLE: |
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cmd.control = cpu_to_le16(SET_LONG_PREAMBLE); |
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break; |
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case CMD_TYPE_AUTO_PREAMBLE: |
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default: |
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cmd.control = cpu_to_le16(SET_AUTO_PREAMBLE); |
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break; |
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} |
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if (priv->radioon) |
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cmd.control |= cpu_to_le16(TURN_ON_RF); |
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else |
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cmd.control &= cpu_to_le16(~TURN_ON_RF); |
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lbtf_deb_cmd("RADIO_SET: radio %d, preamble %d\n", priv->radioon, |
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priv->preamble); |
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ret = lbtf_cmd_with_response(priv, CMD_802_11_RADIO_CONTROL, &cmd); |
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lbtf_deb_leave_args(LBTF_DEB_CMD, "ret %d", ret); |
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return ret; |
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} |
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void lbtf_set_mac_control(struct lbtf_private *priv) |
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{ |
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struct cmd_ds_mac_control cmd; |
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lbtf_deb_enter(LBTF_DEB_CMD); |
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cmd.hdr.size = cpu_to_le16(sizeof(cmd)); |
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cmd.action = cpu_to_le16(priv->mac_control); |
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cmd.reserved = 0; |
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lbtf_cmd_async(priv, CMD_MAC_CONTROL, |
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&cmd.hdr, sizeof(cmd)); |
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lbtf_deb_leave(LBTF_DEB_CMD); |
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} |
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/** |
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* lbtf_allocate_cmd_buffer - Allocates cmd buffer, links it to free cmd queue |
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* |
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* @priv: A pointer to struct lbtf_private structure |
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* |
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* Returns: 0 on success. |
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*/ |
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int lbtf_allocate_cmd_buffer(struct lbtf_private *priv) |
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{ |
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int ret = 0; |
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u32 bufsize; |
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u32 i; |
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struct cmd_ctrl_node *cmdarray; |
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lbtf_deb_enter(LBTF_DEB_HOST); |
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/* Allocate and initialize the command array */ |
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bufsize = sizeof(struct cmd_ctrl_node) * LBS_NUM_CMD_BUFFERS; |
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cmdarray = kzalloc(bufsize, GFP_KERNEL); |
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if (!cmdarray) { |
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lbtf_deb_host("ALLOC_CMD_BUF: tempcmd_array is NULL\n"); |
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ret = -1; |
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goto done; |
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} |
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priv->cmd_array = cmdarray; |
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/* Allocate and initialize each command buffer in the command array */ |
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for (i = 0; i < LBS_NUM_CMD_BUFFERS; i++) { |
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cmdarray[i].cmdbuf = kzalloc(LBS_CMD_BUFFER_SIZE, GFP_KERNEL); |
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if (!cmdarray[i].cmdbuf) { |
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lbtf_deb_host("ALLOC_CMD_BUF: ptempvirtualaddr is NULL\n"); |
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ret = -1; |
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goto done; |
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} |
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} |
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for (i = 0; i < LBS_NUM_CMD_BUFFERS; i++) { |
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init_waitqueue_head(&cmdarray[i].cmdwait_q); |
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lbtf_cleanup_and_insert_cmd(priv, &cmdarray[i]); |
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} |
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ret = 0; |
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done: |
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lbtf_deb_leave_args(LBTF_DEB_HOST, "ret %d", ret); |
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return ret; |
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} |
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|
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/** |
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* lbtf_free_cmd_buffer - Frees the cmd buffer. |
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* |
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* @priv: A pointer to struct lbtf_private structure |
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* |
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* Returns: 0 |
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*/ |
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int lbtf_free_cmd_buffer(struct lbtf_private *priv) |
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{ |
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struct cmd_ctrl_node *cmdarray; |
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unsigned int i; |
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lbtf_deb_enter(LBTF_DEB_HOST); |
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/* need to check if cmd array is allocated or not */ |
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if (priv->cmd_array == NULL) { |
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lbtf_deb_host("FREE_CMD_BUF: cmd_array is NULL\n"); |
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goto done; |
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} |
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cmdarray = priv->cmd_array; |
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/* Release shared memory buffers */ |
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for (i = 0; i < LBS_NUM_CMD_BUFFERS; i++) { |
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kfree(cmdarray[i].cmdbuf); |
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cmdarray[i].cmdbuf = NULL; |
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} |
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/* Release cmd_ctrl_node */ |
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kfree(priv->cmd_array); |
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priv->cmd_array = NULL; |
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done: |
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lbtf_deb_leave(LBTF_DEB_HOST); |
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return 0; |
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} |
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|
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/** |
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* lbtf_get_cmd_ctrl_node - Gets free cmd node from free cmd queue. |
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* |
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* @priv: A pointer to struct lbtf_private structure |
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* |
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* Returns: pointer to a struct cmd_ctrl_node or NULL if none available. |
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*/ |
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static struct cmd_ctrl_node *lbtf_get_cmd_ctrl_node(struct lbtf_private *priv) |
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{ |
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struct cmd_ctrl_node *tempnode; |
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unsigned long flags; |
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|
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lbtf_deb_enter(LBTF_DEB_HOST); |
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|
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if (!priv) |
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return NULL; |
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|
|
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 { |
|
lbtf_deb_host("GET_CMD_NODE: cmd_ctrl_node is not available\n"); |
|
tempnode = NULL; |
|
} |
|
|
|
spin_unlock_irqrestore(&priv->driver_lock, flags); |
|
|
|
lbtf_deb_leave(LBTF_DEB_HOST); |
|
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; |
|
int ret = 0; |
|
|
|
/* Debug group is lbtf_deb_THREAD and not lbtf_deb_HOST, because the |
|
* only caller to us is lbtf_thread() and we get even when a |
|
* data packet is received */ |
|
lbtf_deb_enter(LBTF_DEB_THREAD); |
|
|
|
spin_lock_irqsave(&priv->driver_lock, flags); |
|
|
|
if (priv->cur_cmd) { |
|
pr_alert("EXEC_NEXT_CMD: already processing command!\n"); |
|
spin_unlock_irqrestore(&priv->driver_lock, flags); |
|
ret = -1; |
|
goto done; |
|
} |
|
|
|
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); |
|
lbtf_deb_host("EXEC_NEXT_CMD: sending command 0x%04x\n", |
|
le16_to_cpu(cmd->command)); |
|
spin_unlock_irqrestore(&priv->driver_lock, flags); |
|
lbtf_submit_command(priv, cmdnode); |
|
} else |
|
spin_unlock_irqrestore(&priv->driver_lock, flags); |
|
|
|
ret = 0; |
|
done: |
|
lbtf_deb_leave(LBTF_DEB_THREAD); |
|
return ret; |
|
} |
|
|
|
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; |
|
|
|
lbtf_deb_enter(LBTF_DEB_HOST); |
|
|
|
if (priv->surpriseremoved) { |
|
lbtf_deb_host("PREP_CMD: card removed\n"); |
|
cmdnode = ERR_PTR(-ENOENT); |
|
goto done; |
|
} |
|
|
|
cmdnode = lbtf_get_cmd_ctrl_node(priv); |
|
if (cmdnode == NULL) { |
|
lbtf_deb_host("PREP_CMD: cmdnode is NULL\n"); |
|
|
|
/* Wake up main thread to execute next command */ |
|
queue_work(lbtf_wq, &priv->cmd_work); |
|
cmdnode = ERR_PTR(-ENOBUFS); |
|
goto done; |
|
} |
|
|
|
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; |
|
|
|
lbtf_deb_host("PREP_CMD: command 0x%04x\n", command); |
|
|
|
cmdnode->cmdwaitqwoken = 0; |
|
lbtf_queue_cmd(priv, cmdnode); |
|
queue_work(lbtf_wq, &priv->cmd_work); |
|
|
|
done: |
|
lbtf_deb_leave_args(LBTF_DEB_HOST, "ret %p", cmdnode); |
|
return cmdnode; |
|
} |
|
|
|
void lbtf_cmd_async(struct lbtf_private *priv, uint16_t command, |
|
struct cmd_header *in_cmd, int in_cmd_size) |
|
{ |
|
lbtf_deb_enter(LBTF_DEB_CMD); |
|
__lbtf_cmd_async(priv, command, in_cmd, in_cmd_size, NULL, 0); |
|
lbtf_deb_leave(LBTF_DEB_CMD); |
|
} |
|
|
|
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; |
|
|
|
lbtf_deb_enter(LBTF_DEB_HOST); |
|
|
|
cmdnode = __lbtf_cmd_async(priv, command, in_cmd, in_cmd_size, |
|
callback, callback_arg); |
|
if (IS_ERR(cmdnode)) { |
|
ret = PTR_ERR(cmdnode); |
|
goto done; |
|
} |
|
|
|
might_sleep(); |
|
ret = wait_event_interruptible(cmdnode->cmdwait_q, |
|
cmdnode->cmdwaitqwoken); |
|
if (ret) { |
|
pr_info("PREP_CMD: command 0x%04x interrupted by signal: %d\n", |
|
command, ret); |
|
goto done; |
|
} |
|
|
|
spin_lock_irqsave(&priv->driver_lock, flags); |
|
ret = cmdnode->result; |
|
if (ret) |
|
pr_info("PREP_CMD: command 0x%04x failed: %d\n", |
|
command, ret); |
|
|
|
__lbtf_cleanup_and_insert_cmd(priv, cmdnode); |
|
spin_unlock_irqrestore(&priv->driver_lock, flags); |
|
|
|
done: |
|
lbtf_deb_leave_args(LBTF_DEB_HOST, "ret %d", ret); |
|
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; |
|
|
|
lbtf_deb_enter(LBTF_DEB_CMD); |
|
|
|
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); |
|
|
|
lbtf_deb_cmd("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): |
|
pr_info("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); |
|
lbtf_deb_leave_args(LBTF_DEB_CMD, "ret %d", ret); |
|
return ret; |
|
}
|
|
|