forked from Minki/linux
cc2a8ea82e
This patch adds consistent DMA masks for 64 bit Signed-off-by: Ron Rindjunsky <ron.rindjunsky@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
7773 lines
216 KiB
C
7773 lines
216 KiB
C
/******************************************************************************
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*
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* Copyright(c) 2003 - 2008 Intel Corporation. All rights reserved.
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*
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* Portions of this file are derived from the ipw3945 project, as well
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* as portions of the ieee80211 subsystem header files.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
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*
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* The full GNU General Public License is included in this distribution in the
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* file called LICENSE.
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*
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* Contact Information:
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* James P. Ketrenos <ipw2100-admin@linux.intel.com>
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* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*
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*****************************************************************************/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/version.h>
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#include <linux/init.h>
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#include <linux/pci.h>
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#include <linux/dma-mapping.h>
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#include <linux/delay.h>
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#include <linux/skbuff.h>
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#include <linux/netdevice.h>
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#include <linux/wireless.h>
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#include <linux/firmware.h>
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#include <linux/etherdevice.h>
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#include <linux/if_arp.h>
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#include <net/mac80211.h>
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#include <asm/div64.h>
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#include "iwl-eeprom.h"
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#include "iwl-4965.h"
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#include "iwl-core.h"
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#include "iwl-io.h"
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#include "iwl-helpers.h"
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#include "iwl-sta.h"
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#include "iwl-calib.h"
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static int iwl4965_tx_queue_update_write_ptr(struct iwl_priv *priv,
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struct iwl4965_tx_queue *txq);
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/******************************************************************************
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*
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* module boiler plate
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*
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******************************************************************************/
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/*
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* module name, copyright, version, etc.
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* NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
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*/
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#define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link 4965AGN driver for Linux"
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#ifdef CONFIG_IWLWIFI_DEBUG
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#define VD "d"
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#else
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#define VD
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#endif
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#ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
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#define VS "s"
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#else
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#define VS
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#endif
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#define DRV_VERSION IWLWIFI_VERSION VD VS
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MODULE_DESCRIPTION(DRV_DESCRIPTION);
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MODULE_VERSION(DRV_VERSION);
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MODULE_AUTHOR(DRV_COPYRIGHT);
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MODULE_LICENSE("GPL");
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__le16 *ieee80211_get_qos_ctrl(struct ieee80211_hdr *hdr)
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{
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u16 fc = le16_to_cpu(hdr->frame_control);
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int hdr_len = ieee80211_get_hdrlen(fc);
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if ((fc & 0x00cc) == (IEEE80211_STYPE_QOS_DATA | IEEE80211_FTYPE_DATA))
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return (__le16 *) ((u8 *) hdr + hdr_len - QOS_CONTROL_LEN);
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return NULL;
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}
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static const struct ieee80211_supported_band *iwl4965_get_hw_mode(
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struct iwl_priv *priv, enum ieee80211_band band)
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{
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return priv->hw->wiphy->bands[band];
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}
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static int iwl4965_is_empty_essid(const char *essid, int essid_len)
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{
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/* Single white space is for Linksys APs */
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if (essid_len == 1 && essid[0] == ' ')
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return 1;
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/* Otherwise, if the entire essid is 0, we assume it is hidden */
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while (essid_len) {
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essid_len--;
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if (essid[essid_len] != '\0')
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return 0;
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}
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return 1;
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}
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static const char *iwl4965_escape_essid(const char *essid, u8 essid_len)
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{
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static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
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const char *s = essid;
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char *d = escaped;
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if (iwl4965_is_empty_essid(essid, essid_len)) {
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memcpy(escaped, "<hidden>", sizeof("<hidden>"));
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return escaped;
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}
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essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
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while (essid_len--) {
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if (*s == '\0') {
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*d++ = '\\';
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*d++ = '0';
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s++;
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} else
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*d++ = *s++;
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}
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*d = '\0';
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return escaped;
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}
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/*************** DMA-QUEUE-GENERAL-FUNCTIONS *****
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* DMA services
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*
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* Theory of operation
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*
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* A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer
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* of buffer descriptors, each of which points to one or more data buffers for
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* the device to read from or fill. Driver and device exchange status of each
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* queue via "read" and "write" pointers. Driver keeps minimum of 2 empty
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* entries in each circular buffer, to protect against confusing empty and full
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* queue states.
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*
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* The device reads or writes the data in the queues via the device's several
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* DMA/FIFO channels. Each queue is mapped to a single DMA channel.
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*
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* For Tx queue, there are low mark and high mark limits. If, after queuing
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* the packet for Tx, free space become < low mark, Tx queue stopped. When
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* reclaiming packets (on 'tx done IRQ), if free space become > high mark,
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* Tx queue resumed.
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*
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* The 4965 operates with up to 17 queues: One receive queue, one transmit
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* queue (#4) for sending commands to the device firmware, and 15 other
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* Tx queues that may be mapped to prioritized Tx DMA/FIFO channels.
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*
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* See more detailed info in iwl-4965-hw.h.
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***************************************************/
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int iwl4965_queue_space(const struct iwl4965_queue *q)
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{
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int s = q->read_ptr - q->write_ptr;
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if (q->read_ptr > q->write_ptr)
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s -= q->n_bd;
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if (s <= 0)
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s += q->n_window;
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/* keep some reserve to not confuse empty and full situations */
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s -= 2;
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if (s < 0)
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s = 0;
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return s;
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}
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static inline int x2_queue_used(const struct iwl4965_queue *q, int i)
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{
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return q->write_ptr > q->read_ptr ?
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(i >= q->read_ptr && i < q->write_ptr) :
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!(i < q->read_ptr && i >= q->write_ptr);
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}
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static inline u8 get_cmd_index(struct iwl4965_queue *q, u32 index, int is_huge)
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{
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/* This is for scan command, the big buffer at end of command array */
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if (is_huge)
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return q->n_window; /* must be power of 2 */
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/* Otherwise, use normal size buffers */
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return index & (q->n_window - 1);
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}
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/**
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* iwl4965_queue_init - Initialize queue's high/low-water and read/write indexes
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*/
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static int iwl4965_queue_init(struct iwl_priv *priv, struct iwl4965_queue *q,
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int count, int slots_num, u32 id)
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{
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q->n_bd = count;
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q->n_window = slots_num;
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q->id = id;
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/* count must be power-of-two size, otherwise iwl_queue_inc_wrap
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* and iwl_queue_dec_wrap are broken. */
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BUG_ON(!is_power_of_2(count));
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/* slots_num must be power-of-two size, otherwise
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* get_cmd_index is broken. */
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BUG_ON(!is_power_of_2(slots_num));
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q->low_mark = q->n_window / 4;
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if (q->low_mark < 4)
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q->low_mark = 4;
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q->high_mark = q->n_window / 8;
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if (q->high_mark < 2)
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q->high_mark = 2;
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q->write_ptr = q->read_ptr = 0;
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return 0;
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}
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/**
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* iwl4965_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue
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*/
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static int iwl4965_tx_queue_alloc(struct iwl_priv *priv,
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struct iwl4965_tx_queue *txq, u32 id)
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{
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struct pci_dev *dev = priv->pci_dev;
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/* Driver private data, only for Tx (not command) queues,
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* not shared with device. */
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if (id != IWL_CMD_QUEUE_NUM) {
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txq->txb = kmalloc(sizeof(txq->txb[0]) *
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TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
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if (!txq->txb) {
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IWL_ERROR("kmalloc for auxiliary BD "
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"structures failed\n");
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goto error;
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}
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} else
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txq->txb = NULL;
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/* Circular buffer of transmit frame descriptors (TFDs),
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* shared with device */
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txq->bd = pci_alloc_consistent(dev,
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sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX,
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&txq->q.dma_addr);
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if (!txq->bd) {
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IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
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sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX);
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goto error;
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}
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txq->q.id = id;
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return 0;
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error:
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if (txq->txb) {
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kfree(txq->txb);
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txq->txb = NULL;
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}
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return -ENOMEM;
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}
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/**
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* iwl4965_tx_queue_init - Allocate and initialize one tx/cmd queue
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*/
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int iwl4965_tx_queue_init(struct iwl_priv *priv,
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struct iwl4965_tx_queue *txq, int slots_num, u32 txq_id)
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{
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struct pci_dev *dev = priv->pci_dev;
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int len;
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int rc = 0;
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/*
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* Alloc buffer array for commands (Tx or other types of commands).
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* For the command queue (#4), allocate command space + one big
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* command for scan, since scan command is very huge; the system will
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* not have two scans at the same time, so only one is needed.
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* For normal Tx queues (all other queues), no super-size command
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* space is needed.
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*/
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len = sizeof(struct iwl_cmd) * slots_num;
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if (txq_id == IWL_CMD_QUEUE_NUM)
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len += IWL_MAX_SCAN_SIZE;
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txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd);
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if (!txq->cmd)
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return -ENOMEM;
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/* Alloc driver data array and TFD circular buffer */
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rc = iwl4965_tx_queue_alloc(priv, txq, txq_id);
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if (rc) {
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pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
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return -ENOMEM;
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}
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txq->need_update = 0;
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/* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
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* iwl_queue_inc_wrap and iwl_queue_dec_wrap are broken. */
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BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
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/* Initialize queue's high/low-water marks, and head/tail indexes */
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iwl4965_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
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/* Tell device where to find queue */
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iwl4965_hw_tx_queue_init(priv, txq);
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return 0;
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}
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/**
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* iwl4965_tx_queue_free - Deallocate DMA queue.
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* @txq: Transmit queue to deallocate.
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*
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* Empty queue by removing and destroying all BD's.
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* Free all buffers.
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* 0-fill, but do not free "txq" descriptor structure.
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*/
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void iwl4965_tx_queue_free(struct iwl_priv *priv, struct iwl4965_tx_queue *txq)
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{
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struct iwl4965_queue *q = &txq->q;
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struct pci_dev *dev = priv->pci_dev;
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int len;
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if (q->n_bd == 0)
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return;
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/* first, empty all BD's */
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for (; q->write_ptr != q->read_ptr;
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q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd))
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iwl4965_hw_txq_free_tfd(priv, txq);
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len = sizeof(struct iwl_cmd) * q->n_window;
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if (q->id == IWL_CMD_QUEUE_NUM)
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len += IWL_MAX_SCAN_SIZE;
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/* De-alloc array of command/tx buffers */
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pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
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/* De-alloc circular buffer of TFDs */
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if (txq->q.n_bd)
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pci_free_consistent(dev, sizeof(struct iwl4965_tfd_frame) *
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txq->q.n_bd, txq->bd, txq->q.dma_addr);
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/* De-alloc array of per-TFD driver data */
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if (txq->txb) {
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kfree(txq->txb);
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txq->txb = NULL;
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}
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/* 0-fill queue descriptor structure */
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memset(txq, 0, sizeof(*txq));
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}
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const u8 iwl4965_broadcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
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/*************** STATION TABLE MANAGEMENT ****
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* mac80211 should be examined to determine if sta_info is duplicating
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* the functionality provided here
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*/
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/**************************************************************/
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#if 0 /* temporary disable till we add real remove station */
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/**
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* iwl4965_remove_station - Remove driver's knowledge of station.
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*
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* NOTE: This does not remove station from device's station table.
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*/
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static u8 iwl4965_remove_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
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{
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int index = IWL_INVALID_STATION;
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int i;
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unsigned long flags;
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spin_lock_irqsave(&priv->sta_lock, flags);
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if (is_ap)
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index = IWL_AP_ID;
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else if (is_broadcast_ether_addr(addr))
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index = priv->hw_params.bcast_sta_id;
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else
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for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++)
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if (priv->stations[i].used &&
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!compare_ether_addr(priv->stations[i].sta.sta.addr,
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addr)) {
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index = i;
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break;
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}
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if (unlikely(index == IWL_INVALID_STATION))
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goto out;
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if (priv->stations[index].used) {
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priv->stations[index].used = 0;
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priv->num_stations--;
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}
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BUG_ON(priv->num_stations < 0);
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out:
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spin_unlock_irqrestore(&priv->sta_lock, flags);
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return 0;
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}
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#endif
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/**
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* iwl4965_add_station_flags - Add station to tables in driver and device
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*/
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u8 iwl4965_add_station_flags(struct iwl_priv *priv, const u8 *addr,
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int is_ap, u8 flags, void *ht_data)
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{
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int i;
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int index = IWL_INVALID_STATION;
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struct iwl4965_station_entry *station;
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unsigned long flags_spin;
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DECLARE_MAC_BUF(mac);
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spin_lock_irqsave(&priv->sta_lock, flags_spin);
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if (is_ap)
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index = IWL_AP_ID;
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else if (is_broadcast_ether_addr(addr))
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index = priv->hw_params.bcast_sta_id;
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else
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for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++) {
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if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
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addr)) {
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index = i;
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break;
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}
|
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|
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if (!priv->stations[i].used &&
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index == IWL_INVALID_STATION)
|
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index = i;
|
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}
|
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|
|
|
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/* These two conditions have the same outcome, but keep them separate
|
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since they have different meanings */
|
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if (unlikely(index == IWL_INVALID_STATION)) {
|
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spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
|
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return index;
|
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}
|
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|
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if (priv->stations[index].used &&
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!compare_ether_addr(priv->stations[index].sta.sta.addr, addr)) {
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spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
|
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return index;
|
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}
|
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|
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|
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IWL_DEBUG_ASSOC("Add STA ID %d: %s\n", index, print_mac(mac, addr));
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station = &priv->stations[index];
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station->used = 1;
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priv->num_stations++;
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|
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/* Set up the REPLY_ADD_STA command to send to device */
|
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memset(&station->sta, 0, sizeof(struct iwl4965_addsta_cmd));
|
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memcpy(station->sta.sta.addr, addr, ETH_ALEN);
|
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station->sta.mode = 0;
|
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station->sta.sta.sta_id = index;
|
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station->sta.station_flags = 0;
|
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|
|
#ifdef CONFIG_IWL4965_HT
|
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/* BCAST station and IBSS stations do not work in HT mode */
|
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if (index != priv->hw_params.bcast_sta_id &&
|
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priv->iw_mode != IEEE80211_IF_TYPE_IBSS)
|
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iwl4965_set_ht_add_station(priv, index,
|
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(struct ieee80211_ht_info *) ht_data);
|
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#endif /*CONFIG_IWL4965_HT*/
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|
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spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
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|
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/* Add station to device's station table */
|
|
iwl4965_send_add_station(priv, &station->sta, flags);
|
|
return index;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*************** HOST COMMAND QUEUE FUNCTIONS *****/
|
|
|
|
/**
|
|
* iwl4965_enqueue_hcmd - enqueue a uCode command
|
|
* @priv: device private data point
|
|
* @cmd: a point to the ucode command structure
|
|
*
|
|
* The function returns < 0 values to indicate the operation is
|
|
* failed. On success, it turns the index (> 0) of command in the
|
|
* command queue.
|
|
*/
|
|
int iwl4965_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
|
|
{
|
|
struct iwl4965_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
|
|
struct iwl4965_queue *q = &txq->q;
|
|
struct iwl4965_tfd_frame *tfd;
|
|
u32 *control_flags;
|
|
struct iwl_cmd *out_cmd;
|
|
u32 idx;
|
|
u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
|
|
dma_addr_t phys_addr;
|
|
int ret;
|
|
unsigned long flags;
|
|
|
|
/* If any of the command structures end up being larger than
|
|
* the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
|
|
* we will need to increase the size of the TFD entries */
|
|
BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
|
|
!(cmd->meta.flags & CMD_SIZE_HUGE));
|
|
|
|
if (iwl_is_rfkill(priv)) {
|
|
IWL_DEBUG_INFO("Not sending command - RF KILL");
|
|
return -EIO;
|
|
}
|
|
|
|
if (iwl4965_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
|
|
IWL_ERROR("No space for Tx\n");
|
|
return -ENOSPC;
|
|
}
|
|
|
|
spin_lock_irqsave(&priv->hcmd_lock, flags);
|
|
|
|
tfd = &txq->bd[q->write_ptr];
|
|
memset(tfd, 0, sizeof(*tfd));
|
|
|
|
control_flags = (u32 *) tfd;
|
|
|
|
idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE);
|
|
out_cmd = &txq->cmd[idx];
|
|
|
|
out_cmd->hdr.cmd = cmd->id;
|
|
memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
|
|
memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
|
|
|
|
/* At this point, the out_cmd now has all of the incoming cmd
|
|
* information */
|
|
|
|
out_cmd->hdr.flags = 0;
|
|
out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
|
|
INDEX_TO_SEQ(q->write_ptr));
|
|
if (out_cmd->meta.flags & CMD_SIZE_HUGE)
|
|
out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME);
|
|
|
|
phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
|
|
offsetof(struct iwl_cmd, hdr);
|
|
iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
|
|
|
|
IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
|
|
"%d bytes at %d[%d]:%d\n",
|
|
get_cmd_string(out_cmd->hdr.cmd),
|
|
out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
|
|
fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
|
|
|
|
txq->need_update = 1;
|
|
|
|
/* Set up entry in queue's byte count circular buffer */
|
|
priv->cfg->ops->lib->txq_update_byte_cnt_tbl(priv, txq, 0);
|
|
|
|
/* Increment and update queue's write index */
|
|
q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
|
|
ret = iwl4965_tx_queue_update_write_ptr(priv, txq);
|
|
|
|
spin_unlock_irqrestore(&priv->hcmd_lock, flags);
|
|
return ret ? ret : idx;
|
|
}
|
|
|
|
static void iwl4965_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
|
|
{
|
|
struct iwl4965_rxon_cmd *rxon = &priv->staging_rxon;
|
|
|
|
if (hw_decrypt)
|
|
rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
|
|
else
|
|
rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
|
|
|
|
}
|
|
|
|
/**
|
|
* iwl4965_rxon_add_station - add station into station table.
|
|
*
|
|
* there is only one AP station with id= IWL_AP_ID
|
|
* NOTE: mutex must be held before calling this fnction
|
|
*/
|
|
static int iwl4965_rxon_add_station(struct iwl_priv *priv,
|
|
const u8 *addr, int is_ap)
|
|
{
|
|
u8 sta_id;
|
|
|
|
/* Add station to device's station table */
|
|
#ifdef CONFIG_IWL4965_HT
|
|
struct ieee80211_conf *conf = &priv->hw->conf;
|
|
struct ieee80211_ht_info *cur_ht_config = &conf->ht_conf;
|
|
|
|
if ((is_ap) &&
|
|
(conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) &&
|
|
(priv->iw_mode == IEEE80211_IF_TYPE_STA))
|
|
sta_id = iwl4965_add_station_flags(priv, addr, is_ap,
|
|
0, cur_ht_config);
|
|
else
|
|
#endif /* CONFIG_IWL4965_HT */
|
|
sta_id = iwl4965_add_station_flags(priv, addr, is_ap,
|
|
0, NULL);
|
|
|
|
/* Set up default rate scaling table in device's station table */
|
|
iwl4965_add_station(priv, addr, is_ap);
|
|
|
|
return sta_id;
|
|
}
|
|
|
|
/**
|
|
* iwl4965_check_rxon_cmd - validate RXON structure is valid
|
|
*
|
|
* NOTE: This is really only useful during development and can eventually
|
|
* be #ifdef'd out once the driver is stable and folks aren't actively
|
|
* making changes
|
|
*/
|
|
static int iwl4965_check_rxon_cmd(struct iwl4965_rxon_cmd *rxon)
|
|
{
|
|
int error = 0;
|
|
int counter = 1;
|
|
|
|
if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
|
|
error |= le32_to_cpu(rxon->flags &
|
|
(RXON_FLG_TGJ_NARROW_BAND_MSK |
|
|
RXON_FLG_RADAR_DETECT_MSK));
|
|
if (error)
|
|
IWL_WARNING("check 24G fields %d | %d\n",
|
|
counter++, error);
|
|
} else {
|
|
error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
|
|
0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
|
|
if (error)
|
|
IWL_WARNING("check 52 fields %d | %d\n",
|
|
counter++, error);
|
|
error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
|
|
if (error)
|
|
IWL_WARNING("check 52 CCK %d | %d\n",
|
|
counter++, error);
|
|
}
|
|
error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
|
|
if (error)
|
|
IWL_WARNING("check mac addr %d | %d\n", counter++, error);
|
|
|
|
/* make sure basic rates 6Mbps and 1Mbps are supported */
|
|
error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
|
|
((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
|
|
if (error)
|
|
IWL_WARNING("check basic rate %d | %d\n", counter++, error);
|
|
|
|
error |= (le16_to_cpu(rxon->assoc_id) > 2007);
|
|
if (error)
|
|
IWL_WARNING("check assoc id %d | %d\n", counter++, error);
|
|
|
|
error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
|
|
== (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
|
|
if (error)
|
|
IWL_WARNING("check CCK and short slot %d | %d\n",
|
|
counter++, error);
|
|
|
|
error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
|
|
== (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
|
|
if (error)
|
|
IWL_WARNING("check CCK & auto detect %d | %d\n",
|
|
counter++, error);
|
|
|
|
error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
|
|
RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
|
|
if (error)
|
|
IWL_WARNING("check TGG and auto detect %d | %d\n",
|
|
counter++, error);
|
|
|
|
if (error)
|
|
IWL_WARNING("Tuning to channel %d\n",
|
|
le16_to_cpu(rxon->channel));
|
|
|
|
if (error) {
|
|
IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* iwl4965_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
|
|
* @priv: staging_rxon is compared to active_rxon
|
|
*
|
|
* If the RXON structure is changing enough to require a new tune,
|
|
* or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
|
|
* a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
|
|
*/
|
|
static int iwl4965_full_rxon_required(struct iwl_priv *priv)
|
|
{
|
|
|
|
/* These items are only settable from the full RXON command */
|
|
if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
|
|
compare_ether_addr(priv->staging_rxon.bssid_addr,
|
|
priv->active_rxon.bssid_addr) ||
|
|
compare_ether_addr(priv->staging_rxon.node_addr,
|
|
priv->active_rxon.node_addr) ||
|
|
compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
|
|
priv->active_rxon.wlap_bssid_addr) ||
|
|
(priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
|
|
(priv->staging_rxon.channel != priv->active_rxon.channel) ||
|
|
(priv->staging_rxon.air_propagation !=
|
|
priv->active_rxon.air_propagation) ||
|
|
(priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
|
|
priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
|
|
(priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
|
|
priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
|
|
(priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
|
|
(priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
|
|
return 1;
|
|
|
|
/* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
|
|
* be updated with the RXON_ASSOC command -- however only some
|
|
* flag transitions are allowed using RXON_ASSOC */
|
|
|
|
/* Check if we are not switching bands */
|
|
if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
|
|
(priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
|
|
return 1;
|
|
|
|
/* Check if we are switching association toggle */
|
|
if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
|
|
(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* iwl4965_commit_rxon - commit staging_rxon to hardware
|
|
*
|
|
* The RXON command in staging_rxon is committed to the hardware and
|
|
* the active_rxon structure is updated with the new data. This
|
|
* function correctly transitions out of the RXON_ASSOC_MSK state if
|
|
* a HW tune is required based on the RXON structure changes.
|
|
*/
|
|
static int iwl4965_commit_rxon(struct iwl_priv *priv)
|
|
{
|
|
/* cast away the const for active_rxon in this function */
|
|
struct iwl4965_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
|
|
DECLARE_MAC_BUF(mac);
|
|
int rc = 0;
|
|
|
|
if (!iwl_is_alive(priv))
|
|
return -1;
|
|
|
|
/* always get timestamp with Rx frame */
|
|
priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
|
|
|
|
rc = iwl4965_check_rxon_cmd(&priv->staging_rxon);
|
|
if (rc) {
|
|
IWL_ERROR("Invalid RXON configuration. Not committing.\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* If we don't need to send a full RXON, we can use
|
|
* iwl4965_rxon_assoc_cmd which is used to reconfigure filter
|
|
* and other flags for the current radio configuration. */
|
|
if (!iwl4965_full_rxon_required(priv)) {
|
|
rc = iwl_send_rxon_assoc(priv);
|
|
if (rc) {
|
|
IWL_ERROR("Error setting RXON_ASSOC "
|
|
"configuration (%d).\n", rc);
|
|
return rc;
|
|
}
|
|
|
|
memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* station table will be cleared */
|
|
priv->assoc_station_added = 0;
|
|
|
|
/* If we are currently associated and the new config requires
|
|
* an RXON_ASSOC and the new config wants the associated mask enabled,
|
|
* we must clear the associated from the active configuration
|
|
* before we apply the new config */
|
|
if (iwl_is_associated(priv) &&
|
|
(priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
|
|
IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
|
|
active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
|
|
|
|
rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
|
|
sizeof(struct iwl4965_rxon_cmd),
|
|
&priv->active_rxon);
|
|
|
|
/* If the mask clearing failed then we set
|
|
* active_rxon back to what it was previously */
|
|
if (rc) {
|
|
active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
|
|
IWL_ERROR("Error clearing ASSOC_MSK on current "
|
|
"configuration (%d).\n", rc);
|
|
return rc;
|
|
}
|
|
}
|
|
|
|
IWL_DEBUG_INFO("Sending RXON\n"
|
|
"* with%s RXON_FILTER_ASSOC_MSK\n"
|
|
"* channel = %d\n"
|
|
"* bssid = %s\n",
|
|
((priv->staging_rxon.filter_flags &
|
|
RXON_FILTER_ASSOC_MSK) ? "" : "out"),
|
|
le16_to_cpu(priv->staging_rxon.channel),
|
|
print_mac(mac, priv->staging_rxon.bssid_addr));
|
|
|
|
iwl4965_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
|
|
/* Apply the new configuration */
|
|
rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
|
|
sizeof(struct iwl4965_rxon_cmd), &priv->staging_rxon);
|
|
if (rc) {
|
|
IWL_ERROR("Error setting new configuration (%d).\n", rc);
|
|
return rc;
|
|
}
|
|
|
|
iwlcore_clear_stations_table(priv);
|
|
|
|
if (!priv->error_recovering)
|
|
priv->start_calib = 0;
|
|
|
|
iwl_init_sensitivity(priv);
|
|
|
|
memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
|
|
|
|
/* If we issue a new RXON command which required a tune then we must
|
|
* send a new TXPOWER command or we won't be able to Tx any frames */
|
|
rc = iwl4965_hw_reg_send_txpower(priv);
|
|
if (rc) {
|
|
IWL_ERROR("Error setting Tx power (%d).\n", rc);
|
|
return rc;
|
|
}
|
|
|
|
/* Add the broadcast address so we can send broadcast frames */
|
|
if (iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0) ==
|
|
IWL_INVALID_STATION) {
|
|
IWL_ERROR("Error adding BROADCAST address for transmit.\n");
|
|
return -EIO;
|
|
}
|
|
|
|
/* If we have set the ASSOC_MSK and we are in BSS mode then
|
|
* add the IWL_AP_ID to the station rate table */
|
|
if (iwl_is_associated(priv) &&
|
|
(priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
|
|
if (iwl4965_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1)
|
|
== IWL_INVALID_STATION) {
|
|
IWL_ERROR("Error adding AP address for transmit.\n");
|
|
return -EIO;
|
|
}
|
|
priv->assoc_station_added = 1;
|
|
if (priv->default_wep_key &&
|
|
iwl_send_static_wepkey_cmd(priv, 0))
|
|
IWL_ERROR("Could not send WEP static key.\n");
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void iwl4965_update_chain_flags(struct iwl_priv *priv)
|
|
{
|
|
|
|
iwl4965_set_rxon_chain(priv);
|
|
iwl4965_commit_rxon(priv);
|
|
}
|
|
|
|
static int iwl4965_send_bt_config(struct iwl_priv *priv)
|
|
{
|
|
struct iwl4965_bt_cmd bt_cmd = {
|
|
.flags = 3,
|
|
.lead_time = 0xAA,
|
|
.max_kill = 1,
|
|
.kill_ack_mask = 0,
|
|
.kill_cts_mask = 0,
|
|
};
|
|
|
|
return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
|
|
sizeof(struct iwl4965_bt_cmd), &bt_cmd);
|
|
}
|
|
|
|
static int iwl4965_send_scan_abort(struct iwl_priv *priv)
|
|
{
|
|
int rc = 0;
|
|
struct iwl4965_rx_packet *res;
|
|
struct iwl_host_cmd cmd = {
|
|
.id = REPLY_SCAN_ABORT_CMD,
|
|
.meta.flags = CMD_WANT_SKB,
|
|
};
|
|
|
|
/* If there isn't a scan actively going on in the hardware
|
|
* then we are in between scan bands and not actually
|
|
* actively scanning, so don't send the abort command */
|
|
if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
|
|
clear_bit(STATUS_SCAN_ABORTING, &priv->status);
|
|
return 0;
|
|
}
|
|
|
|
rc = iwl_send_cmd_sync(priv, &cmd);
|
|
if (rc) {
|
|
clear_bit(STATUS_SCAN_ABORTING, &priv->status);
|
|
return rc;
|
|
}
|
|
|
|
res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
|
|
if (res->u.status != CAN_ABORT_STATUS) {
|
|
/* The scan abort will return 1 for success or
|
|
* 2 for "failure". A failure condition can be
|
|
* due to simply not being in an active scan which
|
|
* can occur if we send the scan abort before we
|
|
* the microcode has notified us that a scan is
|
|
* completed. */
|
|
IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
|
|
clear_bit(STATUS_SCAN_ABORTING, &priv->status);
|
|
clear_bit(STATUS_SCAN_HW, &priv->status);
|
|
}
|
|
|
|
dev_kfree_skb_any(cmd.meta.u.skb);
|
|
|
|
return rc;
|
|
}
|
|
|
|
/*
|
|
* CARD_STATE_CMD
|
|
*
|
|
* Use: Sets the device's internal card state to enable, disable, or halt
|
|
*
|
|
* When in the 'enable' state the card operates as normal.
|
|
* When in the 'disable' state, the card enters into a low power mode.
|
|
* When in the 'halt' state, the card is shut down and must be fully
|
|
* restarted to come back on.
|
|
*/
|
|
static int iwl4965_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
|
|
{
|
|
struct iwl_host_cmd cmd = {
|
|
.id = REPLY_CARD_STATE_CMD,
|
|
.len = sizeof(u32),
|
|
.data = &flags,
|
|
.meta.flags = meta_flag,
|
|
};
|
|
|
|
return iwl_send_cmd(priv, &cmd);
|
|
}
|
|
|
|
int iwl4965_send_add_station(struct iwl_priv *priv,
|
|
struct iwl4965_addsta_cmd *sta, u8 flags)
|
|
{
|
|
struct iwl4965_rx_packet *res = NULL;
|
|
int rc = 0;
|
|
struct iwl_host_cmd cmd = {
|
|
.id = REPLY_ADD_STA,
|
|
.len = sizeof(struct iwl4965_addsta_cmd),
|
|
.meta.flags = flags,
|
|
.data = sta,
|
|
};
|
|
|
|
if (!(flags & CMD_ASYNC))
|
|
cmd.meta.flags |= CMD_WANT_SKB;
|
|
|
|
rc = iwl_send_cmd(priv, &cmd);
|
|
|
|
if (rc || (flags & CMD_ASYNC))
|
|
return rc;
|
|
|
|
res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
|
|
if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
|
|
IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
|
|
res->hdr.flags);
|
|
rc = -EIO;
|
|
}
|
|
|
|
if (rc == 0) {
|
|
switch (res->u.add_sta.status) {
|
|
case ADD_STA_SUCCESS_MSK:
|
|
IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
|
|
break;
|
|
default:
|
|
rc = -EIO;
|
|
IWL_WARNING("REPLY_ADD_STA failed\n");
|
|
break;
|
|
}
|
|
}
|
|
|
|
priv->alloc_rxb_skb--;
|
|
dev_kfree_skb_any(cmd.meta.u.skb);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static void iwl4965_clear_free_frames(struct iwl_priv *priv)
|
|
{
|
|
struct list_head *element;
|
|
|
|
IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
|
|
priv->frames_count);
|
|
|
|
while (!list_empty(&priv->free_frames)) {
|
|
element = priv->free_frames.next;
|
|
list_del(element);
|
|
kfree(list_entry(element, struct iwl4965_frame, list));
|
|
priv->frames_count--;
|
|
}
|
|
|
|
if (priv->frames_count) {
|
|
IWL_WARNING("%d frames still in use. Did we lose one?\n",
|
|
priv->frames_count);
|
|
priv->frames_count = 0;
|
|
}
|
|
}
|
|
|
|
static struct iwl4965_frame *iwl4965_get_free_frame(struct iwl_priv *priv)
|
|
{
|
|
struct iwl4965_frame *frame;
|
|
struct list_head *element;
|
|
if (list_empty(&priv->free_frames)) {
|
|
frame = kzalloc(sizeof(*frame), GFP_KERNEL);
|
|
if (!frame) {
|
|
IWL_ERROR("Could not allocate frame!\n");
|
|
return NULL;
|
|
}
|
|
|
|
priv->frames_count++;
|
|
return frame;
|
|
}
|
|
|
|
element = priv->free_frames.next;
|
|
list_del(element);
|
|
return list_entry(element, struct iwl4965_frame, list);
|
|
}
|
|
|
|
static void iwl4965_free_frame(struct iwl_priv *priv, struct iwl4965_frame *frame)
|
|
{
|
|
memset(frame, 0, sizeof(*frame));
|
|
list_add(&frame->list, &priv->free_frames);
|
|
}
|
|
|
|
unsigned int iwl4965_fill_beacon_frame(struct iwl_priv *priv,
|
|
struct ieee80211_hdr *hdr,
|
|
const u8 *dest, int left)
|
|
{
|
|
|
|
if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
|
|
((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
|
|
(priv->iw_mode != IEEE80211_IF_TYPE_AP)))
|
|
return 0;
|
|
|
|
if (priv->ibss_beacon->len > left)
|
|
return 0;
|
|
|
|
memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
|
|
|
|
return priv->ibss_beacon->len;
|
|
}
|
|
|
|
static u8 iwl4965_rate_get_lowest_plcp(int rate_mask)
|
|
{
|
|
u8 i;
|
|
|
|
for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
|
|
i = iwl4965_rates[i].next_ieee) {
|
|
if (rate_mask & (1 << i))
|
|
return iwl4965_rates[i].plcp;
|
|
}
|
|
|
|
return IWL_RATE_INVALID;
|
|
}
|
|
|
|
static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
|
|
{
|
|
struct iwl4965_frame *frame;
|
|
unsigned int frame_size;
|
|
int rc;
|
|
u8 rate;
|
|
|
|
frame = iwl4965_get_free_frame(priv);
|
|
|
|
if (!frame) {
|
|
IWL_ERROR("Could not obtain free frame buffer for beacon "
|
|
"command.\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
if (!(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)) {
|
|
rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic &
|
|
0xFF0);
|
|
if (rate == IWL_INVALID_RATE)
|
|
rate = IWL_RATE_6M_PLCP;
|
|
} else {
|
|
rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic & 0xF);
|
|
if (rate == IWL_INVALID_RATE)
|
|
rate = IWL_RATE_1M_PLCP;
|
|
}
|
|
|
|
frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
|
|
|
|
rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
|
|
&frame->u.cmd[0]);
|
|
|
|
iwl4965_free_frame(priv, frame);
|
|
|
|
return rc;
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* Misc. internal state and helper functions
|
|
*
|
|
******************************************************************************/
|
|
|
|
static void iwl4965_unset_hw_params(struct iwl_priv *priv)
|
|
{
|
|
if (priv->shared_virt)
|
|
pci_free_consistent(priv->pci_dev,
|
|
sizeof(struct iwl4965_shared),
|
|
priv->shared_virt,
|
|
priv->shared_phys);
|
|
}
|
|
|
|
/**
|
|
* iwl4965_supported_rate_to_ie - fill in the supported rate in IE field
|
|
*
|
|
* return : set the bit for each supported rate insert in ie
|
|
*/
|
|
static u16 iwl4965_supported_rate_to_ie(u8 *ie, u16 supported_rate,
|
|
u16 basic_rate, int *left)
|
|
{
|
|
u16 ret_rates = 0, bit;
|
|
int i;
|
|
u8 *cnt = ie;
|
|
u8 *rates = ie + 1;
|
|
|
|
for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
|
|
if (bit & supported_rate) {
|
|
ret_rates |= bit;
|
|
rates[*cnt] = iwl4965_rates[i].ieee |
|
|
((bit & basic_rate) ? 0x80 : 0x00);
|
|
(*cnt)++;
|
|
(*left)--;
|
|
if ((*left <= 0) ||
|
|
(*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
|
|
break;
|
|
}
|
|
}
|
|
|
|
return ret_rates;
|
|
}
|
|
|
|
/**
|
|
* iwl4965_fill_probe_req - fill in all required fields and IE for probe request
|
|
*/
|
|
static u16 iwl4965_fill_probe_req(struct iwl_priv *priv,
|
|
enum ieee80211_band band,
|
|
struct ieee80211_mgmt *frame,
|
|
int left, int is_direct)
|
|
{
|
|
int len = 0;
|
|
u8 *pos = NULL;
|
|
u16 active_rates, ret_rates, cck_rates, active_rate_basic;
|
|
#ifdef CONFIG_IWL4965_HT
|
|
const struct ieee80211_supported_band *sband =
|
|
iwl4965_get_hw_mode(priv, band);
|
|
#endif /* CONFIG_IWL4965_HT */
|
|
|
|
/* Make sure there is enough space for the probe request,
|
|
* two mandatory IEs and the data */
|
|
left -= 24;
|
|
if (left < 0)
|
|
return 0;
|
|
len += 24;
|
|
|
|
frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
|
|
memcpy(frame->da, iwl4965_broadcast_addr, ETH_ALEN);
|
|
memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
|
|
memcpy(frame->bssid, iwl4965_broadcast_addr, ETH_ALEN);
|
|
frame->seq_ctrl = 0;
|
|
|
|
/* fill in our indirect SSID IE */
|
|
/* ...next IE... */
|
|
|
|
left -= 2;
|
|
if (left < 0)
|
|
return 0;
|
|
len += 2;
|
|
pos = &(frame->u.probe_req.variable[0]);
|
|
*pos++ = WLAN_EID_SSID;
|
|
*pos++ = 0;
|
|
|
|
/* fill in our direct SSID IE... */
|
|
if (is_direct) {
|
|
/* ...next IE... */
|
|
left -= 2 + priv->essid_len;
|
|
if (left < 0)
|
|
return 0;
|
|
/* ... fill it in... */
|
|
*pos++ = WLAN_EID_SSID;
|
|
*pos++ = priv->essid_len;
|
|
memcpy(pos, priv->essid, priv->essid_len);
|
|
pos += priv->essid_len;
|
|
len += 2 + priv->essid_len;
|
|
}
|
|
|
|
/* fill in supported rate */
|
|
/* ...next IE... */
|
|
left -= 2;
|
|
if (left < 0)
|
|
return 0;
|
|
|
|
/* ... fill it in... */
|
|
*pos++ = WLAN_EID_SUPP_RATES;
|
|
*pos = 0;
|
|
|
|
/* exclude 60M rate */
|
|
active_rates = priv->rates_mask;
|
|
active_rates &= ~IWL_RATE_60M_MASK;
|
|
|
|
active_rate_basic = active_rates & IWL_BASIC_RATES_MASK;
|
|
|
|
cck_rates = IWL_CCK_RATES_MASK & active_rates;
|
|
ret_rates = iwl4965_supported_rate_to_ie(pos, cck_rates,
|
|
active_rate_basic, &left);
|
|
active_rates &= ~ret_rates;
|
|
|
|
ret_rates = iwl4965_supported_rate_to_ie(pos, active_rates,
|
|
active_rate_basic, &left);
|
|
active_rates &= ~ret_rates;
|
|
|
|
len += 2 + *pos;
|
|
pos += (*pos) + 1;
|
|
if (active_rates == 0)
|
|
goto fill_end;
|
|
|
|
/* fill in supported extended rate */
|
|
/* ...next IE... */
|
|
left -= 2;
|
|
if (left < 0)
|
|
return 0;
|
|
/* ... fill it in... */
|
|
*pos++ = WLAN_EID_EXT_SUPP_RATES;
|
|
*pos = 0;
|
|
iwl4965_supported_rate_to_ie(pos, active_rates,
|
|
active_rate_basic, &left);
|
|
if (*pos > 0)
|
|
len += 2 + *pos;
|
|
|
|
#ifdef CONFIG_IWL4965_HT
|
|
if (sband && sband->ht_info.ht_supported) {
|
|
struct ieee80211_ht_cap *ht_cap;
|
|
pos += (*pos) + 1;
|
|
*pos++ = WLAN_EID_HT_CAPABILITY;
|
|
*pos++ = sizeof(struct ieee80211_ht_cap);
|
|
ht_cap = (struct ieee80211_ht_cap *)pos;
|
|
ht_cap->cap_info = cpu_to_le16(sband->ht_info.cap);
|
|
memcpy(ht_cap->supp_mcs_set, sband->ht_info.supp_mcs_set, 16);
|
|
ht_cap->ampdu_params_info =(sband->ht_info.ampdu_factor &
|
|
IEEE80211_HT_CAP_AMPDU_FACTOR) |
|
|
((sband->ht_info.ampdu_density << 2) &
|
|
IEEE80211_HT_CAP_AMPDU_DENSITY);
|
|
len += 2 + sizeof(struct ieee80211_ht_cap);
|
|
}
|
|
#endif /*CONFIG_IWL4965_HT */
|
|
|
|
fill_end:
|
|
return (u16)len;
|
|
}
|
|
|
|
/*
|
|
* QoS support
|
|
*/
|
|
static int iwl4965_send_qos_params_command(struct iwl_priv *priv,
|
|
struct iwl4965_qosparam_cmd *qos)
|
|
{
|
|
|
|
return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM,
|
|
sizeof(struct iwl4965_qosparam_cmd), qos);
|
|
}
|
|
|
|
static void iwl4965_activate_qos(struct iwl_priv *priv, u8 force)
|
|
{
|
|
unsigned long flags;
|
|
|
|
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
|
|
return;
|
|
|
|
if (!priv->qos_data.qos_enable)
|
|
return;
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
priv->qos_data.def_qos_parm.qos_flags = 0;
|
|
|
|
if (priv->qos_data.qos_cap.q_AP.queue_request &&
|
|
!priv->qos_data.qos_cap.q_AP.txop_request)
|
|
priv->qos_data.def_qos_parm.qos_flags |=
|
|
QOS_PARAM_FLG_TXOP_TYPE_MSK;
|
|
if (priv->qos_data.qos_active)
|
|
priv->qos_data.def_qos_parm.qos_flags |=
|
|
QOS_PARAM_FLG_UPDATE_EDCA_MSK;
|
|
|
|
#ifdef CONFIG_IWL4965_HT
|
|
if (priv->current_ht_config.is_ht)
|
|
priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
|
|
#endif /* CONFIG_IWL4965_HT */
|
|
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
if (force || iwl_is_associated(priv)) {
|
|
IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
|
|
priv->qos_data.qos_active,
|
|
priv->qos_data.def_qos_parm.qos_flags);
|
|
|
|
iwl4965_send_qos_params_command(priv,
|
|
&(priv->qos_data.def_qos_parm));
|
|
}
|
|
}
|
|
|
|
int iwl4965_is_network_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
|
|
{
|
|
/* Filter incoming packets to determine if they are targeted toward
|
|
* this network, discarding packets coming from ourselves */
|
|
switch (priv->iw_mode) {
|
|
case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source | BSSID */
|
|
/* packets from our adapter are dropped (echo) */
|
|
if (!compare_ether_addr(header->addr2, priv->mac_addr))
|
|
return 0;
|
|
/* {broad,multi}cast packets to our IBSS go through */
|
|
if (is_multicast_ether_addr(header->addr1))
|
|
return !compare_ether_addr(header->addr3, priv->bssid);
|
|
/* packets to our adapter go through */
|
|
return !compare_ether_addr(header->addr1, priv->mac_addr);
|
|
case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
|
|
/* packets from our adapter are dropped (echo) */
|
|
if (!compare_ether_addr(header->addr3, priv->mac_addr))
|
|
return 0;
|
|
/* {broad,multi}cast packets to our BSS go through */
|
|
if (is_multicast_ether_addr(header->addr1))
|
|
return !compare_ether_addr(header->addr2, priv->bssid);
|
|
/* packets to our adapter go through */
|
|
return !compare_ether_addr(header->addr1, priv->mac_addr);
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
#define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
|
|
|
|
static const char *iwl4965_get_tx_fail_reason(u32 status)
|
|
{
|
|
switch (status & TX_STATUS_MSK) {
|
|
case TX_STATUS_SUCCESS:
|
|
return "SUCCESS";
|
|
TX_STATUS_ENTRY(SHORT_LIMIT);
|
|
TX_STATUS_ENTRY(LONG_LIMIT);
|
|
TX_STATUS_ENTRY(FIFO_UNDERRUN);
|
|
TX_STATUS_ENTRY(MGMNT_ABORT);
|
|
TX_STATUS_ENTRY(NEXT_FRAG);
|
|
TX_STATUS_ENTRY(LIFE_EXPIRE);
|
|
TX_STATUS_ENTRY(DEST_PS);
|
|
TX_STATUS_ENTRY(ABORTED);
|
|
TX_STATUS_ENTRY(BT_RETRY);
|
|
TX_STATUS_ENTRY(STA_INVALID);
|
|
TX_STATUS_ENTRY(FRAG_DROPPED);
|
|
TX_STATUS_ENTRY(TID_DISABLE);
|
|
TX_STATUS_ENTRY(FRAME_FLUSHED);
|
|
TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
|
|
TX_STATUS_ENTRY(TX_LOCKED);
|
|
TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
|
|
}
|
|
|
|
return "UNKNOWN";
|
|
}
|
|
|
|
/**
|
|
* iwl4965_scan_cancel - Cancel any currently executing HW scan
|
|
*
|
|
* NOTE: priv->mutex is not required before calling this function
|
|
*/
|
|
static int iwl4965_scan_cancel(struct iwl_priv *priv)
|
|
{
|
|
if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
|
|
clear_bit(STATUS_SCANNING, &priv->status);
|
|
return 0;
|
|
}
|
|
|
|
if (test_bit(STATUS_SCANNING, &priv->status)) {
|
|
if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
|
|
IWL_DEBUG_SCAN("Queuing scan abort.\n");
|
|
set_bit(STATUS_SCAN_ABORTING, &priv->status);
|
|
queue_work(priv->workqueue, &priv->abort_scan);
|
|
|
|
} else
|
|
IWL_DEBUG_SCAN("Scan abort already in progress.\n");
|
|
|
|
return test_bit(STATUS_SCANNING, &priv->status);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* iwl4965_scan_cancel_timeout - Cancel any currently executing HW scan
|
|
* @ms: amount of time to wait (in milliseconds) for scan to abort
|
|
*
|
|
* NOTE: priv->mutex must be held before calling this function
|
|
*/
|
|
static int iwl4965_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms)
|
|
{
|
|
unsigned long now = jiffies;
|
|
int ret;
|
|
|
|
ret = iwl4965_scan_cancel(priv);
|
|
if (ret && ms) {
|
|
mutex_unlock(&priv->mutex);
|
|
while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
|
|
test_bit(STATUS_SCANNING, &priv->status))
|
|
msleep(1);
|
|
mutex_lock(&priv->mutex);
|
|
|
|
return test_bit(STATUS_SCANNING, &priv->status);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void iwl4965_sequence_reset(struct iwl_priv *priv)
|
|
{
|
|
/* Reset ieee stats */
|
|
|
|
/* We don't reset the net_device_stats (ieee->stats) on
|
|
* re-association */
|
|
|
|
priv->last_seq_num = -1;
|
|
priv->last_frag_num = -1;
|
|
priv->last_packet_time = 0;
|
|
|
|
iwl4965_scan_cancel(priv);
|
|
}
|
|
|
|
#define MAX_UCODE_BEACON_INTERVAL 4096
|
|
#define INTEL_CONN_LISTEN_INTERVAL __constant_cpu_to_le16(0xA)
|
|
|
|
static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
|
|
{
|
|
u16 new_val = 0;
|
|
u16 beacon_factor = 0;
|
|
|
|
beacon_factor =
|
|
(beacon_val + MAX_UCODE_BEACON_INTERVAL)
|
|
/ MAX_UCODE_BEACON_INTERVAL;
|
|
new_val = beacon_val / beacon_factor;
|
|
|
|
return cpu_to_le16(new_val);
|
|
}
|
|
|
|
static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
|
|
{
|
|
u64 interval_tm_unit;
|
|
u64 tsf, result;
|
|
unsigned long flags;
|
|
struct ieee80211_conf *conf = NULL;
|
|
u16 beacon_int = 0;
|
|
|
|
conf = ieee80211_get_hw_conf(priv->hw);
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp >> 32);
|
|
priv->rxon_timing.timestamp.dw[0] =
|
|
cpu_to_le32(priv->timestamp & 0xFFFFFFFF);
|
|
|
|
priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
|
|
|
|
tsf = priv->timestamp;
|
|
|
|
beacon_int = priv->beacon_int;
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
|
|
if (beacon_int == 0) {
|
|
priv->rxon_timing.beacon_interval = cpu_to_le16(100);
|
|
priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
|
|
} else {
|
|
priv->rxon_timing.beacon_interval =
|
|
cpu_to_le16(beacon_int);
|
|
priv->rxon_timing.beacon_interval =
|
|
iwl4965_adjust_beacon_interval(
|
|
le16_to_cpu(priv->rxon_timing.beacon_interval));
|
|
}
|
|
|
|
priv->rxon_timing.atim_window = 0;
|
|
} else {
|
|
priv->rxon_timing.beacon_interval =
|
|
iwl4965_adjust_beacon_interval(conf->beacon_int);
|
|
/* TODO: we need to get atim_window from upper stack
|
|
* for now we set to 0 */
|
|
priv->rxon_timing.atim_window = 0;
|
|
}
|
|
|
|
interval_tm_unit =
|
|
(le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
|
|
result = do_div(tsf, interval_tm_unit);
|
|
priv->rxon_timing.beacon_init_val =
|
|
cpu_to_le32((u32) ((u64) interval_tm_unit - result));
|
|
|
|
IWL_DEBUG_ASSOC
|
|
("beacon interval %d beacon timer %d beacon tim %d\n",
|
|
le16_to_cpu(priv->rxon_timing.beacon_interval),
|
|
le32_to_cpu(priv->rxon_timing.beacon_init_val),
|
|
le16_to_cpu(priv->rxon_timing.atim_window));
|
|
}
|
|
|
|
static int iwl4965_scan_initiate(struct iwl_priv *priv)
|
|
{
|
|
if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
|
|
IWL_ERROR("APs don't scan.\n");
|
|
return 0;
|
|
}
|
|
|
|
if (!iwl_is_ready_rf(priv)) {
|
|
IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
|
|
return -EIO;
|
|
}
|
|
|
|
if (test_bit(STATUS_SCANNING, &priv->status)) {
|
|
IWL_DEBUG_SCAN("Scan already in progress.\n");
|
|
return -EAGAIN;
|
|
}
|
|
|
|
if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
|
|
IWL_DEBUG_SCAN("Scan request while abort pending. "
|
|
"Queuing.\n");
|
|
return -EAGAIN;
|
|
}
|
|
|
|
IWL_DEBUG_INFO("Starting scan...\n");
|
|
priv->scan_bands = 2;
|
|
set_bit(STATUS_SCANNING, &priv->status);
|
|
priv->scan_start = jiffies;
|
|
priv->scan_pass_start = priv->scan_start;
|
|
|
|
queue_work(priv->workqueue, &priv->request_scan);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static void iwl4965_set_flags_for_phymode(struct iwl_priv *priv,
|
|
enum ieee80211_band band)
|
|
{
|
|
if (band == IEEE80211_BAND_5GHZ) {
|
|
priv->staging_rxon.flags &=
|
|
~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
|
|
| RXON_FLG_CCK_MSK);
|
|
priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
|
|
} else {
|
|
/* Copied from iwl4965_post_associate() */
|
|
if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
|
|
priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
|
|
else
|
|
priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
|
|
|
|
if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
|
|
priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
|
|
|
|
priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
|
|
priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
|
|
priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* initialize rxon structure with default values from eeprom
|
|
*/
|
|
static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
|
|
{
|
|
const struct iwl_channel_info *ch_info;
|
|
|
|
memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
|
|
|
|
switch (priv->iw_mode) {
|
|
case IEEE80211_IF_TYPE_AP:
|
|
priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
|
|
break;
|
|
|
|
case IEEE80211_IF_TYPE_STA:
|
|
priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
|
|
priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
|
|
break;
|
|
|
|
case IEEE80211_IF_TYPE_IBSS:
|
|
priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
|
|
priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
|
|
priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
|
|
RXON_FILTER_ACCEPT_GRP_MSK;
|
|
break;
|
|
|
|
case IEEE80211_IF_TYPE_MNTR:
|
|
priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
|
|
priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
|
|
RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
|
|
break;
|
|
default:
|
|
IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
|
|
break;
|
|
}
|
|
|
|
#if 0
|
|
/* TODO: Figure out when short_preamble would be set and cache from
|
|
* that */
|
|
if (!hw_to_local(priv->hw)->short_preamble)
|
|
priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
|
|
else
|
|
priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
|
|
#endif
|
|
|
|
ch_info = iwl_get_channel_info(priv, priv->band,
|
|
le16_to_cpu(priv->staging_rxon.channel));
|
|
|
|
if (!ch_info)
|
|
ch_info = &priv->channel_info[0];
|
|
|
|
/*
|
|
* in some case A channels are all non IBSS
|
|
* in this case force B/G channel
|
|
*/
|
|
if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
|
|
!(is_channel_ibss(ch_info)))
|
|
ch_info = &priv->channel_info[0];
|
|
|
|
priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
|
|
priv->band = ch_info->band;
|
|
|
|
iwl4965_set_flags_for_phymode(priv, priv->band);
|
|
|
|
priv->staging_rxon.ofdm_basic_rates =
|
|
(IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
|
|
priv->staging_rxon.cck_basic_rates =
|
|
(IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
|
|
|
|
priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
|
|
RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
|
|
memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
|
|
memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
|
|
priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
|
|
priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
|
|
iwl4965_set_rxon_chain(priv);
|
|
}
|
|
|
|
static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
|
|
{
|
|
if (mode == IEEE80211_IF_TYPE_IBSS) {
|
|
const struct iwl_channel_info *ch_info;
|
|
|
|
ch_info = iwl_get_channel_info(priv,
|
|
priv->band,
|
|
le16_to_cpu(priv->staging_rxon.channel));
|
|
|
|
if (!ch_info || !is_channel_ibss(ch_info)) {
|
|
IWL_ERROR("channel %d not IBSS channel\n",
|
|
le16_to_cpu(priv->staging_rxon.channel));
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
priv->iw_mode = mode;
|
|
|
|
iwl4965_connection_init_rx_config(priv);
|
|
memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
|
|
|
|
iwlcore_clear_stations_table(priv);
|
|
|
|
/* dont commit rxon if rf-kill is on*/
|
|
if (!iwl_is_ready_rf(priv))
|
|
return -EAGAIN;
|
|
|
|
cancel_delayed_work(&priv->scan_check);
|
|
if (iwl4965_scan_cancel_timeout(priv, 100)) {
|
|
IWL_WARNING("Aborted scan still in progress after 100ms\n");
|
|
IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
|
|
return -EAGAIN;
|
|
}
|
|
|
|
iwl4965_commit_rxon(priv);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void iwl4965_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
|
|
struct ieee80211_tx_control *ctl,
|
|
struct iwl_cmd *cmd,
|
|
struct sk_buff *skb_frag,
|
|
int sta_id)
|
|
{
|
|
struct iwl4965_hw_key *keyinfo = &priv->stations[sta_id].keyinfo;
|
|
struct iwl_wep_key *wepkey;
|
|
int keyidx = 0;
|
|
|
|
BUG_ON(ctl->hw_key->hw_key_idx > 3);
|
|
|
|
switch (keyinfo->alg) {
|
|
case ALG_CCMP:
|
|
cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
|
|
memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
|
|
if (ctl->flags & IEEE80211_TXCTL_AMPDU)
|
|
cmd->cmd.tx.tx_flags |= TX_CMD_FLG_AGG_CCMP_MSK;
|
|
IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
|
|
break;
|
|
|
|
case ALG_TKIP:
|
|
cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
|
|
ieee80211_get_tkip_key(keyinfo->conf, skb_frag,
|
|
IEEE80211_TKIP_P2_KEY, cmd->cmd.tx.key);
|
|
IWL_DEBUG_TX("tx_cmd with tkip hwcrypto\n");
|
|
break;
|
|
|
|
case ALG_WEP:
|
|
wepkey = &priv->wep_keys[ctl->hw_key->hw_key_idx];
|
|
cmd->cmd.tx.sec_ctl = 0;
|
|
if (priv->default_wep_key) {
|
|
/* the WEP key was sent as static */
|
|
keyidx = ctl->hw_key->hw_key_idx;
|
|
memcpy(&cmd->cmd.tx.key[3], wepkey->key,
|
|
wepkey->key_size);
|
|
if (wepkey->key_size == WEP_KEY_LEN_128)
|
|
cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
|
|
} else {
|
|
/* the WEP key was sent as dynamic */
|
|
keyidx = keyinfo->keyidx;
|
|
memcpy(&cmd->cmd.tx.key[3], keyinfo->key,
|
|
keyinfo->keylen);
|
|
if (keyinfo->keylen == WEP_KEY_LEN_128)
|
|
cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
|
|
}
|
|
|
|
cmd->cmd.tx.sec_ctl |= (TX_CMD_SEC_WEP |
|
|
(keyidx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT);
|
|
|
|
IWL_DEBUG_TX("Configuring packet for WEP encryption "
|
|
"with key %d\n", keyidx);
|
|
break;
|
|
|
|
default:
|
|
printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* handle build REPLY_TX command notification.
|
|
*/
|
|
static void iwl4965_build_tx_cmd_basic(struct iwl_priv *priv,
|
|
struct iwl_cmd *cmd,
|
|
struct ieee80211_tx_control *ctrl,
|
|
struct ieee80211_hdr *hdr,
|
|
int is_unicast, u8 std_id)
|
|
{
|
|
__le16 *qc;
|
|
u16 fc = le16_to_cpu(hdr->frame_control);
|
|
__le32 tx_flags = cmd->cmd.tx.tx_flags;
|
|
|
|
cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
|
|
if (!(ctrl->flags & IEEE80211_TXCTL_NO_ACK)) {
|
|
tx_flags |= TX_CMD_FLG_ACK_MSK;
|
|
if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
|
|
tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
|
|
if (ieee80211_is_probe_response(fc) &&
|
|
!(le16_to_cpu(hdr->seq_ctrl) & 0xf))
|
|
tx_flags |= TX_CMD_FLG_TSF_MSK;
|
|
} else {
|
|
tx_flags &= (~TX_CMD_FLG_ACK_MSK);
|
|
tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
|
|
}
|
|
|
|
if (ieee80211_is_back_request(fc))
|
|
tx_flags |= TX_CMD_FLG_ACK_MSK | TX_CMD_FLG_IMM_BA_RSP_MASK;
|
|
|
|
|
|
cmd->cmd.tx.sta_id = std_id;
|
|
if (ieee80211_get_morefrag(hdr))
|
|
tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
|
|
|
|
qc = ieee80211_get_qos_ctrl(hdr);
|
|
if (qc) {
|
|
cmd->cmd.tx.tid_tspec = (u8) (le16_to_cpu(*qc) & 0xf);
|
|
tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
|
|
} else
|
|
tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
|
|
|
|
if (ctrl->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
|
|
tx_flags |= TX_CMD_FLG_RTS_MSK;
|
|
tx_flags &= ~TX_CMD_FLG_CTS_MSK;
|
|
} else if (ctrl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
|
|
tx_flags &= ~TX_CMD_FLG_RTS_MSK;
|
|
tx_flags |= TX_CMD_FLG_CTS_MSK;
|
|
}
|
|
|
|
if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
|
|
tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
|
|
|
|
tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
|
|
if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
|
|
if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ ||
|
|
(fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_REQ)
|
|
cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(3);
|
|
else
|
|
cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(2);
|
|
} else {
|
|
cmd->cmd.tx.timeout.pm_frame_timeout = 0;
|
|
}
|
|
|
|
cmd->cmd.tx.driver_txop = 0;
|
|
cmd->cmd.tx.tx_flags = tx_flags;
|
|
cmd->cmd.tx.next_frame_len = 0;
|
|
}
|
|
static void iwl_update_tx_stats(struct iwl_priv *priv, u16 fc, u16 len)
|
|
{
|
|
/* 0 - mgmt, 1 - cnt, 2 - data */
|
|
int idx = (fc & IEEE80211_FCTL_FTYPE) >> 2;
|
|
priv->tx_stats[idx].cnt++;
|
|
priv->tx_stats[idx].bytes += len;
|
|
}
|
|
/**
|
|
* iwl4965_get_sta_id - Find station's index within station table
|
|
*
|
|
* If new IBSS station, create new entry in station table
|
|
*/
|
|
static int iwl4965_get_sta_id(struct iwl_priv *priv,
|
|
struct ieee80211_hdr *hdr)
|
|
{
|
|
int sta_id;
|
|
u16 fc = le16_to_cpu(hdr->frame_control);
|
|
DECLARE_MAC_BUF(mac);
|
|
|
|
/* If this frame is broadcast or management, use broadcast station id */
|
|
if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
|
|
is_multicast_ether_addr(hdr->addr1))
|
|
return priv->hw_params.bcast_sta_id;
|
|
|
|
switch (priv->iw_mode) {
|
|
|
|
/* If we are a client station in a BSS network, use the special
|
|
* AP station entry (that's the only station we communicate with) */
|
|
case IEEE80211_IF_TYPE_STA:
|
|
return IWL_AP_ID;
|
|
|
|
/* If we are an AP, then find the station, or use BCAST */
|
|
case IEEE80211_IF_TYPE_AP:
|
|
sta_id = iwl_find_station(priv, hdr->addr1);
|
|
if (sta_id != IWL_INVALID_STATION)
|
|
return sta_id;
|
|
return priv->hw_params.bcast_sta_id;
|
|
|
|
/* If this frame is going out to an IBSS network, find the station,
|
|
* or create a new station table entry */
|
|
case IEEE80211_IF_TYPE_IBSS:
|
|
sta_id = iwl_find_station(priv, hdr->addr1);
|
|
if (sta_id != IWL_INVALID_STATION)
|
|
return sta_id;
|
|
|
|
/* Create new station table entry */
|
|
sta_id = iwl4965_add_station_flags(priv, hdr->addr1,
|
|
0, CMD_ASYNC, NULL);
|
|
|
|
if (sta_id != IWL_INVALID_STATION)
|
|
return sta_id;
|
|
|
|
IWL_DEBUG_DROP("Station %s not in station map. "
|
|
"Defaulting to broadcast...\n",
|
|
print_mac(mac, hdr->addr1));
|
|
iwl_print_hex_dump(IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
|
|
return priv->hw_params.bcast_sta_id;
|
|
|
|
default:
|
|
IWL_WARNING("Unknown mode of operation: %d", priv->iw_mode);
|
|
return priv->hw_params.bcast_sta_id;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* start REPLY_TX command process
|
|
*/
|
|
static int iwl4965_tx_skb(struct iwl_priv *priv,
|
|
struct sk_buff *skb, struct ieee80211_tx_control *ctl)
|
|
{
|
|
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
|
|
struct iwl4965_tfd_frame *tfd;
|
|
u32 *control_flags;
|
|
int txq_id = ctl->queue;
|
|
struct iwl4965_tx_queue *txq = NULL;
|
|
struct iwl4965_queue *q = NULL;
|
|
dma_addr_t phys_addr;
|
|
dma_addr_t txcmd_phys;
|
|
dma_addr_t scratch_phys;
|
|
struct iwl_cmd *out_cmd = NULL;
|
|
u16 len, idx, len_org;
|
|
u8 id, hdr_len, unicast;
|
|
u8 sta_id;
|
|
u16 seq_number = 0;
|
|
u16 fc;
|
|
__le16 *qc;
|
|
u8 wait_write_ptr = 0;
|
|
unsigned long flags;
|
|
int rc;
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
if (iwl_is_rfkill(priv)) {
|
|
IWL_DEBUG_DROP("Dropping - RF KILL\n");
|
|
goto drop_unlock;
|
|
}
|
|
|
|
if (!priv->vif) {
|
|
IWL_DEBUG_DROP("Dropping - !priv->vif\n");
|
|
goto drop_unlock;
|
|
}
|
|
|
|
if ((ctl->tx_rate->hw_value & 0xFF) == IWL_INVALID_RATE) {
|
|
IWL_ERROR("ERROR: No TX rate available.\n");
|
|
goto drop_unlock;
|
|
}
|
|
|
|
unicast = !is_multicast_ether_addr(hdr->addr1);
|
|
id = 0;
|
|
|
|
fc = le16_to_cpu(hdr->frame_control);
|
|
|
|
#ifdef CONFIG_IWLWIFI_DEBUG
|
|
if (ieee80211_is_auth(fc))
|
|
IWL_DEBUG_TX("Sending AUTH frame\n");
|
|
else if (ieee80211_is_assoc_request(fc))
|
|
IWL_DEBUG_TX("Sending ASSOC frame\n");
|
|
else if (ieee80211_is_reassoc_request(fc))
|
|
IWL_DEBUG_TX("Sending REASSOC frame\n");
|
|
#endif
|
|
|
|
/* drop all data frame if we are not associated */
|
|
if (((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) &&
|
|
(!iwl_is_associated(priv) ||
|
|
((priv->iw_mode == IEEE80211_IF_TYPE_STA) && !priv->assoc_id) ||
|
|
!priv->assoc_station_added)) {
|
|
IWL_DEBUG_DROP("Dropping - !iwl_is_associated\n");
|
|
goto drop_unlock;
|
|
}
|
|
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
hdr_len = ieee80211_get_hdrlen(fc);
|
|
|
|
/* Find (or create) index into station table for destination station */
|
|
sta_id = iwl4965_get_sta_id(priv, hdr);
|
|
if (sta_id == IWL_INVALID_STATION) {
|
|
DECLARE_MAC_BUF(mac);
|
|
|
|
IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n",
|
|
print_mac(mac, hdr->addr1));
|
|
goto drop;
|
|
}
|
|
|
|
IWL_DEBUG_RATE("station Id %d\n", sta_id);
|
|
|
|
qc = ieee80211_get_qos_ctrl(hdr);
|
|
if (qc) {
|
|
u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
|
|
seq_number = priv->stations[sta_id].tid[tid].seq_number &
|
|
IEEE80211_SCTL_SEQ;
|
|
hdr->seq_ctrl = cpu_to_le16(seq_number) |
|
|
(hdr->seq_ctrl &
|
|
__constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
|
|
seq_number += 0x10;
|
|
#ifdef CONFIG_IWL4965_HT
|
|
/* aggregation is on for this <sta,tid> */
|
|
if (ctl->flags & IEEE80211_TXCTL_AMPDU)
|
|
txq_id = priv->stations[sta_id].tid[tid].agg.txq_id;
|
|
priv->stations[sta_id].tid[tid].tfds_in_queue++;
|
|
#endif /* CONFIG_IWL4965_HT */
|
|
}
|
|
|
|
/* Descriptor for chosen Tx queue */
|
|
txq = &priv->txq[txq_id];
|
|
q = &txq->q;
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
|
|
/* Set up first empty TFD within this queue's circular TFD buffer */
|
|
tfd = &txq->bd[q->write_ptr];
|
|
memset(tfd, 0, sizeof(*tfd));
|
|
control_flags = (u32 *) tfd;
|
|
idx = get_cmd_index(q, q->write_ptr, 0);
|
|
|
|
/* Set up driver data for this TFD */
|
|
memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl4965_tx_info));
|
|
txq->txb[q->write_ptr].skb[0] = skb;
|
|
memcpy(&(txq->txb[q->write_ptr].status.control),
|
|
ctl, sizeof(struct ieee80211_tx_control));
|
|
|
|
/* Set up first empty entry in queue's array of Tx/cmd buffers */
|
|
out_cmd = &txq->cmd[idx];
|
|
memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
|
|
memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
|
|
|
|
/*
|
|
* Set up the Tx-command (not MAC!) header.
|
|
* Store the chosen Tx queue and TFD index within the sequence field;
|
|
* after Tx, uCode's Tx response will return this value so driver can
|
|
* locate the frame within the tx queue and do post-tx processing.
|
|
*/
|
|
out_cmd->hdr.cmd = REPLY_TX;
|
|
out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
|
|
INDEX_TO_SEQ(q->write_ptr)));
|
|
|
|
/* Copy MAC header from skb into command buffer */
|
|
memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
|
|
|
|
/*
|
|
* Use the first empty entry in this queue's command buffer array
|
|
* to contain the Tx command and MAC header concatenated together
|
|
* (payload data will be in another buffer).
|
|
* Size of this varies, due to varying MAC header length.
|
|
* If end is not dword aligned, we'll have 2 extra bytes at the end
|
|
* of the MAC header (device reads on dword boundaries).
|
|
* We'll tell device about this padding later.
|
|
*/
|
|
len = priv->hw_params.tx_cmd_len +
|
|
sizeof(struct iwl_cmd_header) + hdr_len;
|
|
|
|
len_org = len;
|
|
len = (len + 3) & ~3;
|
|
|
|
if (len_org != len)
|
|
len_org = 1;
|
|
else
|
|
len_org = 0;
|
|
|
|
/* Physical address of this Tx command's header (not MAC header!),
|
|
* within command buffer array. */
|
|
txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl_cmd) * idx +
|
|
offsetof(struct iwl_cmd, hdr);
|
|
|
|
/* Add buffer containing Tx command and MAC(!) header to TFD's
|
|
* first entry */
|
|
iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
|
|
|
|
if (!(ctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT))
|
|
iwl4965_build_tx_cmd_hwcrypto(priv, ctl, out_cmd, skb, sta_id);
|
|
|
|
/* Set up TFD's 2nd entry to point directly to remainder of skb,
|
|
* if any (802.11 null frames have no payload). */
|
|
len = skb->len - hdr_len;
|
|
if (len) {
|
|
phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
|
|
len, PCI_DMA_TODEVICE);
|
|
iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
|
|
}
|
|
|
|
/* Tell 4965 about any 2-byte padding after MAC header */
|
|
if (len_org)
|
|
out_cmd->cmd.tx.tx_flags |= TX_CMD_FLG_MH_PAD_MSK;
|
|
|
|
/* Total # bytes to be transmitted */
|
|
len = (u16)skb->len;
|
|
out_cmd->cmd.tx.len = cpu_to_le16(len);
|
|
|
|
/* TODO need this for burst mode later on */
|
|
iwl4965_build_tx_cmd_basic(priv, out_cmd, ctl, hdr, unicast, sta_id);
|
|
|
|
/* set is_hcca to 0; it probably will never be implemented */
|
|
iwl4965_hw_build_tx_cmd_rate(priv, out_cmd, ctl, hdr, sta_id, 0);
|
|
|
|
iwl_update_tx_stats(priv, fc, len);
|
|
|
|
scratch_phys = txcmd_phys + sizeof(struct iwl_cmd_header) +
|
|
offsetof(struct iwl4965_tx_cmd, scratch);
|
|
out_cmd->cmd.tx.dram_lsb_ptr = cpu_to_le32(scratch_phys);
|
|
out_cmd->cmd.tx.dram_msb_ptr = iwl_get_dma_hi_address(scratch_phys);
|
|
|
|
if (!ieee80211_get_morefrag(hdr)) {
|
|
txq->need_update = 1;
|
|
if (qc) {
|
|
u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
|
|
priv->stations[sta_id].tid[tid].seq_number = seq_number;
|
|
}
|
|
} else {
|
|
wait_write_ptr = 1;
|
|
txq->need_update = 0;
|
|
}
|
|
|
|
iwl_print_hex_dump(IWL_DL_TX, out_cmd->cmd.payload,
|
|
sizeof(out_cmd->cmd.tx));
|
|
|
|
iwl_print_hex_dump(IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
|
|
ieee80211_get_hdrlen(fc));
|
|
|
|
/* Set up entry for this TFD in Tx byte-count array */
|
|
priv->cfg->ops->lib->txq_update_byte_cnt_tbl(priv, txq, len);
|
|
|
|
/* Tell device the write index *just past* this latest filled TFD */
|
|
q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
|
|
rc = iwl4965_tx_queue_update_write_ptr(priv, txq);
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
if (rc)
|
|
return rc;
|
|
|
|
if ((iwl4965_queue_space(q) < q->high_mark)
|
|
&& priv->mac80211_registered) {
|
|
if (wait_write_ptr) {
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
txq->need_update = 1;
|
|
iwl4965_tx_queue_update_write_ptr(priv, txq);
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
}
|
|
|
|
ieee80211_stop_queue(priv->hw, ctl->queue);
|
|
}
|
|
|
|
return 0;
|
|
|
|
drop_unlock:
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
drop:
|
|
return -1;
|
|
}
|
|
|
|
static void iwl4965_set_rate(struct iwl_priv *priv)
|
|
{
|
|
const struct ieee80211_supported_band *hw = NULL;
|
|
struct ieee80211_rate *rate;
|
|
int i;
|
|
|
|
hw = iwl4965_get_hw_mode(priv, priv->band);
|
|
if (!hw) {
|
|
IWL_ERROR("Failed to set rate: unable to get hw mode\n");
|
|
return;
|
|
}
|
|
|
|
priv->active_rate = 0;
|
|
priv->active_rate_basic = 0;
|
|
|
|
for (i = 0; i < hw->n_bitrates; i++) {
|
|
rate = &(hw->bitrates[i]);
|
|
if (rate->hw_value < IWL_RATE_COUNT)
|
|
priv->active_rate |= (1 << rate->hw_value);
|
|
}
|
|
|
|
IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
|
|
priv->active_rate, priv->active_rate_basic);
|
|
|
|
/*
|
|
* If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
|
|
* otherwise set it to the default of all CCK rates and 6, 12, 24 for
|
|
* OFDM
|
|
*/
|
|
if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
|
|
priv->staging_rxon.cck_basic_rates =
|
|
((priv->active_rate_basic &
|
|
IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
|
|
else
|
|
priv->staging_rxon.cck_basic_rates =
|
|
(IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
|
|
|
|
if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
|
|
priv->staging_rxon.ofdm_basic_rates =
|
|
((priv->active_rate_basic &
|
|
(IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
|
|
IWL_FIRST_OFDM_RATE) & 0xFF;
|
|
else
|
|
priv->staging_rxon.ofdm_basic_rates =
|
|
(IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
|
|
}
|
|
|
|
void iwl4965_radio_kill_sw(struct iwl_priv *priv, int disable_radio)
|
|
{
|
|
unsigned long flags;
|
|
|
|
if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
|
|
return;
|
|
|
|
IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
|
|
disable_radio ? "OFF" : "ON");
|
|
|
|
if (disable_radio) {
|
|
iwl4965_scan_cancel(priv);
|
|
/* FIXME: This is a workaround for AP */
|
|
if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
|
|
CSR_UCODE_SW_BIT_RFKILL);
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
/* call the host command only if no hw rf-kill set */
|
|
if (!test_bit(STATUS_RF_KILL_HW, &priv->status) &&
|
|
iwl_is_ready(priv))
|
|
iwl4965_send_card_state(priv,
|
|
CARD_STATE_CMD_DISABLE,
|
|
0);
|
|
set_bit(STATUS_RF_KILL_SW, &priv->status);
|
|
|
|
/* make sure mac80211 stop sending Tx frame */
|
|
if (priv->mac80211_registered)
|
|
ieee80211_stop_queues(priv->hw);
|
|
}
|
|
return;
|
|
}
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
|
|
|
|
clear_bit(STATUS_RF_KILL_SW, &priv->status);
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
/* wake up ucode */
|
|
msleep(10);
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
iwl_read32(priv, CSR_UCODE_DRV_GP1);
|
|
if (!iwl_grab_nic_access(priv))
|
|
iwl_release_nic_access(priv);
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
|
|
IWL_DEBUG_RF_KILL("Can not turn radio back on - "
|
|
"disabled by HW switch\n");
|
|
return;
|
|
}
|
|
|
|
queue_work(priv->workqueue, &priv->restart);
|
|
return;
|
|
}
|
|
|
|
#define IWL_PACKET_RETRY_TIME HZ
|
|
|
|
int iwl4965_is_duplicate_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
|
|
{
|
|
u16 sc = le16_to_cpu(header->seq_ctrl);
|
|
u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
|
|
u16 frag = sc & IEEE80211_SCTL_FRAG;
|
|
u16 *last_seq, *last_frag;
|
|
unsigned long *last_time;
|
|
|
|
switch (priv->iw_mode) {
|
|
case IEEE80211_IF_TYPE_IBSS:{
|
|
struct list_head *p;
|
|
struct iwl4965_ibss_seq *entry = NULL;
|
|
u8 *mac = header->addr2;
|
|
int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
|
|
|
|
__list_for_each(p, &priv->ibss_mac_hash[index]) {
|
|
entry = list_entry(p, struct iwl4965_ibss_seq, list);
|
|
if (!compare_ether_addr(entry->mac, mac))
|
|
break;
|
|
}
|
|
if (p == &priv->ibss_mac_hash[index]) {
|
|
entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
|
|
if (!entry) {
|
|
IWL_ERROR("Cannot malloc new mac entry\n");
|
|
return 0;
|
|
}
|
|
memcpy(entry->mac, mac, ETH_ALEN);
|
|
entry->seq_num = seq;
|
|
entry->frag_num = frag;
|
|
entry->packet_time = jiffies;
|
|
list_add(&entry->list, &priv->ibss_mac_hash[index]);
|
|
return 0;
|
|
}
|
|
last_seq = &entry->seq_num;
|
|
last_frag = &entry->frag_num;
|
|
last_time = &entry->packet_time;
|
|
break;
|
|
}
|
|
case IEEE80211_IF_TYPE_STA:
|
|
last_seq = &priv->last_seq_num;
|
|
last_frag = &priv->last_frag_num;
|
|
last_time = &priv->last_packet_time;
|
|
break;
|
|
default:
|
|
return 0;
|
|
}
|
|
if ((*last_seq == seq) &&
|
|
time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
|
|
if (*last_frag == frag)
|
|
goto drop;
|
|
if (*last_frag + 1 != frag)
|
|
/* out-of-order fragment */
|
|
goto drop;
|
|
} else
|
|
*last_seq = seq;
|
|
|
|
*last_frag = frag;
|
|
*last_time = jiffies;
|
|
return 0;
|
|
|
|
drop:
|
|
return 1;
|
|
}
|
|
|
|
#ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
|
|
|
|
#include "iwl-spectrum.h"
|
|
|
|
#define BEACON_TIME_MASK_LOW 0x00FFFFFF
|
|
#define BEACON_TIME_MASK_HIGH 0xFF000000
|
|
#define TIME_UNIT 1024
|
|
|
|
/*
|
|
* extended beacon time format
|
|
* time in usec will be changed into a 32-bit value in 8:24 format
|
|
* the high 1 byte is the beacon counts
|
|
* the lower 3 bytes is the time in usec within one beacon interval
|
|
*/
|
|
|
|
static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
|
|
{
|
|
u32 quot;
|
|
u32 rem;
|
|
u32 interval = beacon_interval * 1024;
|
|
|
|
if (!interval || !usec)
|
|
return 0;
|
|
|
|
quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
|
|
rem = (usec % interval) & BEACON_TIME_MASK_LOW;
|
|
|
|
return (quot << 24) + rem;
|
|
}
|
|
|
|
/* base is usually what we get from ucode with each received frame,
|
|
* the same as HW timer counter counting down
|
|
*/
|
|
|
|
static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
|
|
{
|
|
u32 base_low = base & BEACON_TIME_MASK_LOW;
|
|
u32 addon_low = addon & BEACON_TIME_MASK_LOW;
|
|
u32 interval = beacon_interval * TIME_UNIT;
|
|
u32 res = (base & BEACON_TIME_MASK_HIGH) +
|
|
(addon & BEACON_TIME_MASK_HIGH);
|
|
|
|
if (base_low > addon_low)
|
|
res += base_low - addon_low;
|
|
else if (base_low < addon_low) {
|
|
res += interval + base_low - addon_low;
|
|
res += (1 << 24);
|
|
} else
|
|
res += (1 << 24);
|
|
|
|
return cpu_to_le32(res);
|
|
}
|
|
|
|
static int iwl4965_get_measurement(struct iwl_priv *priv,
|
|
struct ieee80211_measurement_params *params,
|
|
u8 type)
|
|
{
|
|
struct iwl4965_spectrum_cmd spectrum;
|
|
struct iwl4965_rx_packet *res;
|
|
struct iwl_host_cmd cmd = {
|
|
.id = REPLY_SPECTRUM_MEASUREMENT_CMD,
|
|
.data = (void *)&spectrum,
|
|
.meta.flags = CMD_WANT_SKB,
|
|
};
|
|
u32 add_time = le64_to_cpu(params->start_time);
|
|
int rc;
|
|
int spectrum_resp_status;
|
|
int duration = le16_to_cpu(params->duration);
|
|
|
|
if (iwl_is_associated(priv))
|
|
add_time =
|
|
iwl4965_usecs_to_beacons(
|
|
le64_to_cpu(params->start_time) - priv->last_tsf,
|
|
le16_to_cpu(priv->rxon_timing.beacon_interval));
|
|
|
|
memset(&spectrum, 0, sizeof(spectrum));
|
|
|
|
spectrum.channel_count = cpu_to_le16(1);
|
|
spectrum.flags =
|
|
RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
|
|
spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
|
|
cmd.len = sizeof(spectrum);
|
|
spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
|
|
|
|
if (iwl_is_associated(priv))
|
|
spectrum.start_time =
|
|
iwl4965_add_beacon_time(priv->last_beacon_time,
|
|
add_time,
|
|
le16_to_cpu(priv->rxon_timing.beacon_interval));
|
|
else
|
|
spectrum.start_time = 0;
|
|
|
|
spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
|
|
spectrum.channels[0].channel = params->channel;
|
|
spectrum.channels[0].type = type;
|
|
if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
|
|
spectrum.flags |= RXON_FLG_BAND_24G_MSK |
|
|
RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
|
|
|
|
rc = iwl_send_cmd_sync(priv, &cmd);
|
|
if (rc)
|
|
return rc;
|
|
|
|
res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
|
|
if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
|
|
IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
|
|
rc = -EIO;
|
|
}
|
|
|
|
spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
|
|
switch (spectrum_resp_status) {
|
|
case 0: /* Command will be handled */
|
|
if (res->u.spectrum.id != 0xff) {
|
|
IWL_DEBUG_INFO
|
|
("Replaced existing measurement: %d\n",
|
|
res->u.spectrum.id);
|
|
priv->measurement_status &= ~MEASUREMENT_READY;
|
|
}
|
|
priv->measurement_status |= MEASUREMENT_ACTIVE;
|
|
rc = 0;
|
|
break;
|
|
|
|
case 1: /* Command will not be handled */
|
|
rc = -EAGAIN;
|
|
break;
|
|
}
|
|
|
|
dev_kfree_skb_any(cmd.meta.u.skb);
|
|
|
|
return rc;
|
|
}
|
|
#endif
|
|
|
|
static void iwl4965_txstatus_to_ieee(struct iwl_priv *priv,
|
|
struct iwl4965_tx_info *tx_sta)
|
|
{
|
|
|
|
tx_sta->status.ack_signal = 0;
|
|
tx_sta->status.excessive_retries = 0;
|
|
tx_sta->status.queue_length = 0;
|
|
tx_sta->status.queue_number = 0;
|
|
|
|
if (in_interrupt())
|
|
ieee80211_tx_status_irqsafe(priv->hw,
|
|
tx_sta->skb[0], &(tx_sta->status));
|
|
else
|
|
ieee80211_tx_status(priv->hw,
|
|
tx_sta->skb[0], &(tx_sta->status));
|
|
|
|
tx_sta->skb[0] = NULL;
|
|
}
|
|
|
|
/**
|
|
* iwl4965_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
|
|
*
|
|
* When FW advances 'R' index, all entries between old and new 'R' index
|
|
* need to be reclaimed. As result, some free space forms. If there is
|
|
* enough free space (> low mark), wake the stack that feeds us.
|
|
*/
|
|
int iwl4965_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index)
|
|
{
|
|
struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
|
|
struct iwl4965_queue *q = &txq->q;
|
|
int nfreed = 0;
|
|
|
|
if ((index >= q->n_bd) || (x2_queue_used(q, index) == 0)) {
|
|
IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
|
|
"is out of range [0-%d] %d %d.\n", txq_id,
|
|
index, q->n_bd, q->write_ptr, q->read_ptr);
|
|
return 0;
|
|
}
|
|
|
|
for (index = iwl_queue_inc_wrap(index, q->n_bd);
|
|
q->read_ptr != index;
|
|
q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
|
|
if (txq_id != IWL_CMD_QUEUE_NUM) {
|
|
iwl4965_txstatus_to_ieee(priv,
|
|
&(txq->txb[txq->q.read_ptr]));
|
|
iwl4965_hw_txq_free_tfd(priv, txq);
|
|
} else if (nfreed > 1) {
|
|
IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
|
|
q->write_ptr, q->read_ptr);
|
|
queue_work(priv->workqueue, &priv->restart);
|
|
}
|
|
nfreed++;
|
|
}
|
|
|
|
/* if (iwl4965_queue_space(q) > q->low_mark && (txq_id >= 0) &&
|
|
(txq_id != IWL_CMD_QUEUE_NUM) &&
|
|
priv->mac80211_registered)
|
|
ieee80211_wake_queue(priv->hw, txq_id); */
|
|
|
|
|
|
return nfreed;
|
|
}
|
|
|
|
static int iwl4965_is_tx_success(u32 status)
|
|
{
|
|
status &= TX_STATUS_MSK;
|
|
return (status == TX_STATUS_SUCCESS)
|
|
|| (status == TX_STATUS_DIRECT_DONE);
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* Generic RX handler implementations
|
|
*
|
|
******************************************************************************/
|
|
#ifdef CONFIG_IWL4965_HT
|
|
|
|
static inline int iwl4965_get_ra_sta_id(struct iwl_priv *priv,
|
|
struct ieee80211_hdr *hdr)
|
|
{
|
|
if (priv->iw_mode == IEEE80211_IF_TYPE_STA)
|
|
return IWL_AP_ID;
|
|
else {
|
|
u8 *da = ieee80211_get_DA(hdr);
|
|
return iwl_find_station(priv, da);
|
|
}
|
|
}
|
|
|
|
static struct ieee80211_hdr *iwl4965_tx_queue_get_hdr(
|
|
struct iwl_priv *priv, int txq_id, int idx)
|
|
{
|
|
if (priv->txq[txq_id].txb[idx].skb[0])
|
|
return (struct ieee80211_hdr *)priv->txq[txq_id].
|
|
txb[idx].skb[0]->data;
|
|
return NULL;
|
|
}
|
|
|
|
static inline u32 iwl4965_get_scd_ssn(struct iwl4965_tx_resp *tx_resp)
|
|
{
|
|
__le32 *scd_ssn = (__le32 *)((u32 *)&tx_resp->status +
|
|
tx_resp->frame_count);
|
|
return le32_to_cpu(*scd_ssn) & MAX_SN;
|
|
|
|
}
|
|
|
|
/**
|
|
* iwl4965_tx_status_reply_tx - Handle Tx rspnse for frames in aggregation queue
|
|
*/
|
|
static int iwl4965_tx_status_reply_tx(struct iwl_priv *priv,
|
|
struct iwl4965_ht_agg *agg,
|
|
struct iwl4965_tx_resp_agg *tx_resp,
|
|
u16 start_idx)
|
|
{
|
|
u16 status;
|
|
struct agg_tx_status *frame_status = &tx_resp->status;
|
|
struct ieee80211_tx_status *tx_status = NULL;
|
|
struct ieee80211_hdr *hdr = NULL;
|
|
int i, sh;
|
|
int txq_id, idx;
|
|
u16 seq;
|
|
|
|
if (agg->wait_for_ba)
|
|
IWL_DEBUG_TX_REPLY("got tx response w/o block-ack\n");
|
|
|
|
agg->frame_count = tx_resp->frame_count;
|
|
agg->start_idx = start_idx;
|
|
agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
|
|
agg->bitmap = 0;
|
|
|
|
/* # frames attempted by Tx command */
|
|
if (agg->frame_count == 1) {
|
|
/* Only one frame was attempted; no block-ack will arrive */
|
|
status = le16_to_cpu(frame_status[0].status);
|
|
seq = le16_to_cpu(frame_status[0].sequence);
|
|
idx = SEQ_TO_INDEX(seq);
|
|
txq_id = SEQ_TO_QUEUE(seq);
|
|
|
|
/* FIXME: code repetition */
|
|
IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d idx=%d\n",
|
|
agg->frame_count, agg->start_idx, idx);
|
|
|
|
tx_status = &(priv->txq[txq_id].txb[idx].status);
|
|
tx_status->retry_count = tx_resp->failure_frame;
|
|
tx_status->queue_number = status & 0xff;
|
|
tx_status->queue_length = tx_resp->failure_rts;
|
|
tx_status->control.flags &= ~IEEE80211_TXCTL_AMPDU;
|
|
tx_status->flags = iwl4965_is_tx_success(status)?
|
|
IEEE80211_TX_STATUS_ACK : 0;
|
|
iwl4965_hwrate_to_tx_control(priv,
|
|
le32_to_cpu(tx_resp->rate_n_flags),
|
|
&tx_status->control);
|
|
/* FIXME: code repetition end */
|
|
|
|
IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n",
|
|
status & 0xff, tx_resp->failure_frame);
|
|
IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n",
|
|
iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags));
|
|
|
|
agg->wait_for_ba = 0;
|
|
} else {
|
|
/* Two or more frames were attempted; expect block-ack */
|
|
u64 bitmap = 0;
|
|
int start = agg->start_idx;
|
|
|
|
/* Construct bit-map of pending frames within Tx window */
|
|
for (i = 0; i < agg->frame_count; i++) {
|
|
u16 sc;
|
|
status = le16_to_cpu(frame_status[i].status);
|
|
seq = le16_to_cpu(frame_status[i].sequence);
|
|
idx = SEQ_TO_INDEX(seq);
|
|
txq_id = SEQ_TO_QUEUE(seq);
|
|
|
|
if (status & (AGG_TX_STATE_FEW_BYTES_MSK |
|
|
AGG_TX_STATE_ABORT_MSK))
|
|
continue;
|
|
|
|
IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n",
|
|
agg->frame_count, txq_id, idx);
|
|
|
|
hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, idx);
|
|
|
|
sc = le16_to_cpu(hdr->seq_ctrl);
|
|
if (idx != (SEQ_TO_SN(sc) & 0xff)) {
|
|
IWL_ERROR("BUG_ON idx doesn't match seq control"
|
|
" idx=%d, seq_idx=%d, seq=%d\n",
|
|
idx, SEQ_TO_SN(sc),
|
|
hdr->seq_ctrl);
|
|
return -1;
|
|
}
|
|
|
|
IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n",
|
|
i, idx, SEQ_TO_SN(sc));
|
|
|
|
sh = idx - start;
|
|
if (sh > 64) {
|
|
sh = (start - idx) + 0xff;
|
|
bitmap = bitmap << sh;
|
|
sh = 0;
|
|
start = idx;
|
|
} else if (sh < -64)
|
|
sh = 0xff - (start - idx);
|
|
else if (sh < 0) {
|
|
sh = start - idx;
|
|
start = idx;
|
|
bitmap = bitmap << sh;
|
|
sh = 0;
|
|
}
|
|
bitmap |= (1 << sh);
|
|
IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n",
|
|
start, (u32)(bitmap & 0xFFFFFFFF));
|
|
}
|
|
|
|
agg->bitmap = bitmap;
|
|
agg->start_idx = start;
|
|
agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
|
|
IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%llx\n",
|
|
agg->frame_count, agg->start_idx,
|
|
(unsigned long long)agg->bitmap);
|
|
|
|
if (bitmap)
|
|
agg->wait_for_ba = 1;
|
|
}
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
/**
|
|
* iwl4965_rx_reply_tx - Handle standard (non-aggregation) Tx response
|
|
*/
|
|
static void iwl4965_rx_reply_tx(struct iwl_priv *priv,
|
|
struct iwl4965_rx_mem_buffer *rxb)
|
|
{
|
|
struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
|
|
u16 sequence = le16_to_cpu(pkt->hdr.sequence);
|
|
int txq_id = SEQ_TO_QUEUE(sequence);
|
|
int index = SEQ_TO_INDEX(sequence);
|
|
struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
|
|
struct ieee80211_tx_status *tx_status;
|
|
struct iwl4965_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
|
|
u32 status = le32_to_cpu(tx_resp->status);
|
|
#ifdef CONFIG_IWL4965_HT
|
|
int tid = MAX_TID_COUNT, sta_id = IWL_INVALID_STATION;
|
|
struct ieee80211_hdr *hdr;
|
|
__le16 *qc;
|
|
#endif
|
|
|
|
if ((index >= txq->q.n_bd) || (x2_queue_used(&txq->q, index) == 0)) {
|
|
IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
|
|
"is out of range [0-%d] %d %d\n", txq_id,
|
|
index, txq->q.n_bd, txq->q.write_ptr,
|
|
txq->q.read_ptr);
|
|
return;
|
|
}
|
|
|
|
#ifdef CONFIG_IWL4965_HT
|
|
hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, index);
|
|
qc = ieee80211_get_qos_ctrl(hdr);
|
|
|
|
if (qc)
|
|
tid = le16_to_cpu(*qc) & 0xf;
|
|
|
|
sta_id = iwl4965_get_ra_sta_id(priv, hdr);
|
|
if (txq->sched_retry && unlikely(sta_id == IWL_INVALID_STATION)) {
|
|
IWL_ERROR("Station not known\n");
|
|
return;
|
|
}
|
|
|
|
if (txq->sched_retry) {
|
|
const u32 scd_ssn = iwl4965_get_scd_ssn(tx_resp);
|
|
struct iwl4965_ht_agg *agg = NULL;
|
|
|
|
if (!qc)
|
|
return;
|
|
|
|
agg = &priv->stations[sta_id].tid[tid].agg;
|
|
|
|
iwl4965_tx_status_reply_tx(priv, agg,
|
|
(struct iwl4965_tx_resp_agg *)tx_resp, index);
|
|
|
|
if ((tx_resp->frame_count == 1) &&
|
|
!iwl4965_is_tx_success(status)) {
|
|
/* TODO: send BAR */
|
|
}
|
|
|
|
if (txq->q.read_ptr != (scd_ssn & 0xff)) {
|
|
int freed;
|
|
index = iwl_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
|
|
IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn "
|
|
"%d index %d\n", scd_ssn , index);
|
|
freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
|
|
priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
|
|
|
|
if (iwl4965_queue_space(&txq->q) > txq->q.low_mark &&
|
|
txq_id >= 0 && priv->mac80211_registered &&
|
|
agg->state != IWL_EMPTYING_HW_QUEUE_DELBA)
|
|
ieee80211_wake_queue(priv->hw, txq_id);
|
|
|
|
iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
|
|
}
|
|
} else {
|
|
#endif /* CONFIG_IWL4965_HT */
|
|
tx_status = &(txq->txb[txq->q.read_ptr].status);
|
|
|
|
tx_status->retry_count = tx_resp->failure_frame;
|
|
tx_status->queue_number = status;
|
|
tx_status->queue_length = tx_resp->bt_kill_count;
|
|
tx_status->queue_length |= tx_resp->failure_rts;
|
|
tx_status->flags =
|
|
iwl4965_is_tx_success(status) ? IEEE80211_TX_STATUS_ACK : 0;
|
|
iwl4965_hwrate_to_tx_control(priv, le32_to_cpu(tx_resp->rate_n_flags),
|
|
&tx_status->control);
|
|
|
|
IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) rate_n_flags 0x%x "
|
|
"retries %d\n", txq_id, iwl4965_get_tx_fail_reason(status),
|
|
status, le32_to_cpu(tx_resp->rate_n_flags),
|
|
tx_resp->failure_frame);
|
|
|
|
IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
|
|
if (index != -1) {
|
|
int freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
|
|
#ifdef CONFIG_IWL4965_HT
|
|
if (tid != MAX_TID_COUNT)
|
|
priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
|
|
if (iwl4965_queue_space(&txq->q) > txq->q.low_mark &&
|
|
(txq_id >= 0) &&
|
|
priv->mac80211_registered)
|
|
ieee80211_wake_queue(priv->hw, txq_id);
|
|
if (tid != MAX_TID_COUNT)
|
|
iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
|
|
#endif
|
|
}
|
|
#ifdef CONFIG_IWL4965_HT
|
|
}
|
|
#endif /* CONFIG_IWL4965_HT */
|
|
|
|
if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
|
|
IWL_ERROR("TODO: Implement Tx ABORT REQUIRED!!!\n");
|
|
}
|
|
|
|
|
|
static void iwl4965_rx_reply_alive(struct iwl_priv *priv,
|
|
struct iwl4965_rx_mem_buffer *rxb)
|
|
{
|
|
struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
|
|
struct iwl4965_alive_resp *palive;
|
|
struct delayed_work *pwork;
|
|
|
|
palive = &pkt->u.alive_frame;
|
|
|
|
IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
|
|
"0x%01X 0x%01X\n",
|
|
palive->is_valid, palive->ver_type,
|
|
palive->ver_subtype);
|
|
|
|
if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
|
|
IWL_DEBUG_INFO("Initialization Alive received.\n");
|
|
memcpy(&priv->card_alive_init,
|
|
&pkt->u.alive_frame,
|
|
sizeof(struct iwl4965_init_alive_resp));
|
|
pwork = &priv->init_alive_start;
|
|
} else {
|
|
IWL_DEBUG_INFO("Runtime Alive received.\n");
|
|
memcpy(&priv->card_alive, &pkt->u.alive_frame,
|
|
sizeof(struct iwl4965_alive_resp));
|
|
pwork = &priv->alive_start;
|
|
}
|
|
|
|
/* We delay the ALIVE response by 5ms to
|
|
* give the HW RF Kill time to activate... */
|
|
if (palive->is_valid == UCODE_VALID_OK)
|
|
queue_delayed_work(priv->workqueue, pwork,
|
|
msecs_to_jiffies(5));
|
|
else
|
|
IWL_WARNING("uCode did not respond OK.\n");
|
|
}
|
|
|
|
static void iwl4965_rx_reply_add_sta(struct iwl_priv *priv,
|
|
struct iwl4965_rx_mem_buffer *rxb)
|
|
{
|
|
struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
|
|
|
|
IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
|
|
return;
|
|
}
|
|
|
|
static void iwl4965_rx_reply_error(struct iwl_priv *priv,
|
|
struct iwl4965_rx_mem_buffer *rxb)
|
|
{
|
|
struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
|
|
|
|
IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
|
|
"seq 0x%04X ser 0x%08X\n",
|
|
le32_to_cpu(pkt->u.err_resp.error_type),
|
|
get_cmd_string(pkt->u.err_resp.cmd_id),
|
|
pkt->u.err_resp.cmd_id,
|
|
le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
|
|
le32_to_cpu(pkt->u.err_resp.error_info));
|
|
}
|
|
|
|
#define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
|
|
|
|
static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl4965_rx_mem_buffer *rxb)
|
|
{
|
|
struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
|
|
struct iwl4965_rxon_cmd *rxon = (void *)&priv->active_rxon;
|
|
struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
|
|
IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
|
|
le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
|
|
rxon->channel = csa->channel;
|
|
priv->staging_rxon.channel = csa->channel;
|
|
}
|
|
|
|
static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
|
|
struct iwl4965_rx_mem_buffer *rxb)
|
|
{
|
|
#ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
|
|
struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
|
|
struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
|
|
|
|
if (!report->state) {
|
|
IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
|
|
"Spectrum Measure Notification: Start\n");
|
|
return;
|
|
}
|
|
|
|
memcpy(&priv->measure_report, report, sizeof(*report));
|
|
priv->measurement_status |= MEASUREMENT_READY;
|
|
#endif
|
|
}
|
|
|
|
static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
|
|
struct iwl4965_rx_mem_buffer *rxb)
|
|
{
|
|
#ifdef CONFIG_IWLWIFI_DEBUG
|
|
struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
|
|
struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
|
|
IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
|
|
sleep->pm_sleep_mode, sleep->pm_wakeup_src);
|
|
#endif
|
|
}
|
|
|
|
static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
|
|
struct iwl4965_rx_mem_buffer *rxb)
|
|
{
|
|
struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
|
|
IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
|
|
"notification for %s:\n",
|
|
le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
|
|
iwl_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
|
|
}
|
|
|
|
static void iwl4965_bg_beacon_update(struct work_struct *work)
|
|
{
|
|
struct iwl_priv *priv =
|
|
container_of(work, struct iwl_priv, beacon_update);
|
|
struct sk_buff *beacon;
|
|
|
|
/* Pull updated AP beacon from mac80211. will fail if not in AP mode */
|
|
beacon = ieee80211_beacon_get(priv->hw, priv->vif, NULL);
|
|
|
|
if (!beacon) {
|
|
IWL_ERROR("update beacon failed\n");
|
|
return;
|
|
}
|
|
|
|
mutex_lock(&priv->mutex);
|
|
/* new beacon skb is allocated every time; dispose previous.*/
|
|
if (priv->ibss_beacon)
|
|
dev_kfree_skb(priv->ibss_beacon);
|
|
|
|
priv->ibss_beacon = beacon;
|
|
mutex_unlock(&priv->mutex);
|
|
|
|
iwl4965_send_beacon_cmd(priv);
|
|
}
|
|
|
|
static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
|
|
struct iwl4965_rx_mem_buffer *rxb)
|
|
{
|
|
#ifdef CONFIG_IWLWIFI_DEBUG
|
|
struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
|
|
struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
|
|
u8 rate = iwl4965_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
|
|
|
|
IWL_DEBUG_RX("beacon status %x retries %d iss %d "
|
|
"tsf %d %d rate %d\n",
|
|
le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
|
|
beacon->beacon_notify_hdr.failure_frame,
|
|
le32_to_cpu(beacon->ibss_mgr_status),
|
|
le32_to_cpu(beacon->high_tsf),
|
|
le32_to_cpu(beacon->low_tsf), rate);
|
|
#endif
|
|
|
|
if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
|
|
(!test_bit(STATUS_EXIT_PENDING, &priv->status)))
|
|
queue_work(priv->workqueue, &priv->beacon_update);
|
|
}
|
|
|
|
/* Service response to REPLY_SCAN_CMD (0x80) */
|
|
static void iwl4965_rx_reply_scan(struct iwl_priv *priv,
|
|
struct iwl4965_rx_mem_buffer *rxb)
|
|
{
|
|
#ifdef CONFIG_IWLWIFI_DEBUG
|
|
struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
|
|
struct iwl4965_scanreq_notification *notif =
|
|
(struct iwl4965_scanreq_notification *)pkt->u.raw;
|
|
|
|
IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
|
|
#endif
|
|
}
|
|
|
|
/* Service SCAN_START_NOTIFICATION (0x82) */
|
|
static void iwl4965_rx_scan_start_notif(struct iwl_priv *priv,
|
|
struct iwl4965_rx_mem_buffer *rxb)
|
|
{
|
|
struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
|
|
struct iwl4965_scanstart_notification *notif =
|
|
(struct iwl4965_scanstart_notification *)pkt->u.raw;
|
|
priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
|
|
IWL_DEBUG_SCAN("Scan start: "
|
|
"%d [802.11%s] "
|
|
"(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
|
|
notif->channel,
|
|
notif->band ? "bg" : "a",
|
|
notif->tsf_high,
|
|
notif->tsf_low, notif->status, notif->beacon_timer);
|
|
}
|
|
|
|
/* Service SCAN_RESULTS_NOTIFICATION (0x83) */
|
|
static void iwl4965_rx_scan_results_notif(struct iwl_priv *priv,
|
|
struct iwl4965_rx_mem_buffer *rxb)
|
|
{
|
|
struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
|
|
struct iwl4965_scanresults_notification *notif =
|
|
(struct iwl4965_scanresults_notification *)pkt->u.raw;
|
|
|
|
IWL_DEBUG_SCAN("Scan ch.res: "
|
|
"%d [802.11%s] "
|
|
"(TSF: 0x%08X:%08X) - %d "
|
|
"elapsed=%lu usec (%dms since last)\n",
|
|
notif->channel,
|
|
notif->band ? "bg" : "a",
|
|
le32_to_cpu(notif->tsf_high),
|
|
le32_to_cpu(notif->tsf_low),
|
|
le32_to_cpu(notif->statistics[0]),
|
|
le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
|
|
jiffies_to_msecs(elapsed_jiffies
|
|
(priv->last_scan_jiffies, jiffies)));
|
|
|
|
priv->last_scan_jiffies = jiffies;
|
|
priv->next_scan_jiffies = 0;
|
|
}
|
|
|
|
/* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
|
|
static void iwl4965_rx_scan_complete_notif(struct iwl_priv *priv,
|
|
struct iwl4965_rx_mem_buffer *rxb)
|
|
{
|
|
struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
|
|
struct iwl4965_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
|
|
|
|
IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
|
|
scan_notif->scanned_channels,
|
|
scan_notif->tsf_low,
|
|
scan_notif->tsf_high, scan_notif->status);
|
|
|
|
/* The HW is no longer scanning */
|
|
clear_bit(STATUS_SCAN_HW, &priv->status);
|
|
|
|
/* The scan completion notification came in, so kill that timer... */
|
|
cancel_delayed_work(&priv->scan_check);
|
|
|
|
IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
|
|
(priv->scan_bands == 2) ? "2.4" : "5.2",
|
|
jiffies_to_msecs(elapsed_jiffies
|
|
(priv->scan_pass_start, jiffies)));
|
|
|
|
/* Remove this scanned band from the list
|
|
* of pending bands to scan */
|
|
priv->scan_bands--;
|
|
|
|
/* If a request to abort was given, or the scan did not succeed
|
|
* then we reset the scan state machine and terminate,
|
|
* re-queuing another scan if one has been requested */
|
|
if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
|
|
IWL_DEBUG_INFO("Aborted scan completed.\n");
|
|
clear_bit(STATUS_SCAN_ABORTING, &priv->status);
|
|
} else {
|
|
/* If there are more bands on this scan pass reschedule */
|
|
if (priv->scan_bands > 0)
|
|
goto reschedule;
|
|
}
|
|
|
|
priv->last_scan_jiffies = jiffies;
|
|
priv->next_scan_jiffies = 0;
|
|
IWL_DEBUG_INFO("Setting scan to off\n");
|
|
|
|
clear_bit(STATUS_SCANNING, &priv->status);
|
|
|
|
IWL_DEBUG_INFO("Scan took %dms\n",
|
|
jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
|
|
|
|
queue_work(priv->workqueue, &priv->scan_completed);
|
|
|
|
return;
|
|
|
|
reschedule:
|
|
priv->scan_pass_start = jiffies;
|
|
queue_work(priv->workqueue, &priv->request_scan);
|
|
}
|
|
|
|
/* Handle notification from uCode that card's power state is changing
|
|
* due to software, hardware, or critical temperature RFKILL */
|
|
static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
|
|
struct iwl4965_rx_mem_buffer *rxb)
|
|
{
|
|
struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
|
|
u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
|
|
unsigned long status = priv->status;
|
|
|
|
IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
|
|
(flags & HW_CARD_DISABLED) ? "Kill" : "On",
|
|
(flags & SW_CARD_DISABLED) ? "Kill" : "On");
|
|
|
|
if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
|
|
RF_CARD_DISABLED)) {
|
|
|
|
iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
|
|
CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
|
|
|
|
if (!iwl_grab_nic_access(priv)) {
|
|
iwl_write_direct32(
|
|
priv, HBUS_TARG_MBX_C,
|
|
HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
|
|
|
|
iwl_release_nic_access(priv);
|
|
}
|
|
|
|
if (!(flags & RXON_CARD_DISABLED)) {
|
|
iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
|
|
CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
|
|
if (!iwl_grab_nic_access(priv)) {
|
|
iwl_write_direct32(
|
|
priv, HBUS_TARG_MBX_C,
|
|
HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
|
|
|
|
iwl_release_nic_access(priv);
|
|
}
|
|
}
|
|
|
|
if (flags & RF_CARD_DISABLED) {
|
|
iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
|
|
CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
|
|
iwl_read32(priv, CSR_UCODE_DRV_GP1);
|
|
if (!iwl_grab_nic_access(priv))
|
|
iwl_release_nic_access(priv);
|
|
}
|
|
}
|
|
|
|
if (flags & HW_CARD_DISABLED)
|
|
set_bit(STATUS_RF_KILL_HW, &priv->status);
|
|
else
|
|
clear_bit(STATUS_RF_KILL_HW, &priv->status);
|
|
|
|
|
|
if (flags & SW_CARD_DISABLED)
|
|
set_bit(STATUS_RF_KILL_SW, &priv->status);
|
|
else
|
|
clear_bit(STATUS_RF_KILL_SW, &priv->status);
|
|
|
|
if (!(flags & RXON_CARD_DISABLED))
|
|
iwl4965_scan_cancel(priv);
|
|
|
|
if ((test_bit(STATUS_RF_KILL_HW, &status) !=
|
|
test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
|
|
(test_bit(STATUS_RF_KILL_SW, &status) !=
|
|
test_bit(STATUS_RF_KILL_SW, &priv->status)))
|
|
queue_work(priv->workqueue, &priv->rf_kill);
|
|
else
|
|
wake_up_interruptible(&priv->wait_command_queue);
|
|
}
|
|
|
|
/**
|
|
* iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
|
|
*
|
|
* Setup the RX handlers for each of the reply types sent from the uCode
|
|
* to the host.
|
|
*
|
|
* This function chains into the hardware specific files for them to setup
|
|
* any hardware specific handlers as well.
|
|
*/
|
|
static void iwl4965_setup_rx_handlers(struct iwl_priv *priv)
|
|
{
|
|
priv->rx_handlers[REPLY_ALIVE] = iwl4965_rx_reply_alive;
|
|
priv->rx_handlers[REPLY_ADD_STA] = iwl4965_rx_reply_add_sta;
|
|
priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
|
|
priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
|
|
priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
|
|
iwl4965_rx_spectrum_measure_notif;
|
|
priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
|
|
priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
|
|
iwl4965_rx_pm_debug_statistics_notif;
|
|
priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
|
|
|
|
/*
|
|
* The same handler is used for both the REPLY to a discrete
|
|
* statistics request from the host as well as for the periodic
|
|
* statistics notifications (after received beacons) from the uCode.
|
|
*/
|
|
priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics;
|
|
priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics;
|
|
|
|
priv->rx_handlers[REPLY_SCAN_CMD] = iwl4965_rx_reply_scan;
|
|
priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl4965_rx_scan_start_notif;
|
|
priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
|
|
iwl4965_rx_scan_results_notif;
|
|
priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
|
|
iwl4965_rx_scan_complete_notif;
|
|
priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
|
|
priv->rx_handlers[REPLY_TX] = iwl4965_rx_reply_tx;
|
|
|
|
/* Set up hardware specific Rx handlers */
|
|
iwl4965_hw_rx_handler_setup(priv);
|
|
}
|
|
|
|
/**
|
|
* iwl4965_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
|
|
* @rxb: Rx buffer to reclaim
|
|
*
|
|
* If an Rx buffer has an async callback associated with it the callback
|
|
* will be executed. The attached skb (if present) will only be freed
|
|
* if the callback returns 1
|
|
*/
|
|
static void iwl4965_tx_cmd_complete(struct iwl_priv *priv,
|
|
struct iwl4965_rx_mem_buffer *rxb)
|
|
{
|
|
struct iwl4965_rx_packet *pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
|
|
u16 sequence = le16_to_cpu(pkt->hdr.sequence);
|
|
int txq_id = SEQ_TO_QUEUE(sequence);
|
|
int index = SEQ_TO_INDEX(sequence);
|
|
int huge = sequence & SEQ_HUGE_FRAME;
|
|
int cmd_index;
|
|
struct iwl_cmd *cmd;
|
|
|
|
/* If a Tx command is being handled and it isn't in the actual
|
|
* command queue then there a command routing bug has been introduced
|
|
* in the queue management code. */
|
|
if (txq_id != IWL_CMD_QUEUE_NUM)
|
|
IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
|
|
txq_id, pkt->hdr.cmd);
|
|
BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
|
|
|
|
cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
|
|
cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
|
|
|
|
/* Input error checking is done when commands are added to queue. */
|
|
if (cmd->meta.flags & CMD_WANT_SKB) {
|
|
cmd->meta.source->u.skb = rxb->skb;
|
|
rxb->skb = NULL;
|
|
} else if (cmd->meta.u.callback &&
|
|
!cmd->meta.u.callback(priv, cmd, rxb->skb))
|
|
rxb->skb = NULL;
|
|
|
|
iwl4965_tx_queue_reclaim(priv, txq_id, index);
|
|
|
|
if (!(cmd->meta.flags & CMD_ASYNC)) {
|
|
clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
|
|
wake_up_interruptible(&priv->wait_command_queue);
|
|
}
|
|
}
|
|
|
|
/************************** RX-FUNCTIONS ****************************/
|
|
/*
|
|
* Rx theory of operation
|
|
*
|
|
* Driver allocates a circular buffer of Receive Buffer Descriptors (RBDs),
|
|
* each of which point to Receive Buffers to be filled by 4965. These get
|
|
* used not only for Rx frames, but for any command response or notification
|
|
* from the 4965. The driver and 4965 manage the Rx buffers by means
|
|
* of indexes into the circular buffer.
|
|
*
|
|
* Rx Queue Indexes
|
|
* The host/firmware share two index registers for managing the Rx buffers.
|
|
*
|
|
* The READ index maps to the first position that the firmware may be writing
|
|
* to -- the driver can read up to (but not including) this position and get
|
|
* good data.
|
|
* The READ index is managed by the firmware once the card is enabled.
|
|
*
|
|
* The WRITE index maps to the last position the driver has read from -- the
|
|
* position preceding WRITE is the last slot the firmware can place a packet.
|
|
*
|
|
* The queue is empty (no good data) if WRITE = READ - 1, and is full if
|
|
* WRITE = READ.
|
|
*
|
|
* During initialization, the host sets up the READ queue position to the first
|
|
* INDEX position, and WRITE to the last (READ - 1 wrapped)
|
|
*
|
|
* When the firmware places a packet in a buffer, it will advance the READ index
|
|
* and fire the RX interrupt. The driver can then query the READ index and
|
|
* process as many packets as possible, moving the WRITE index forward as it
|
|
* resets the Rx queue buffers with new memory.
|
|
*
|
|
* The management in the driver is as follows:
|
|
* + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
|
|
* iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
|
|
* to replenish the iwl->rxq->rx_free.
|
|
* + In iwl4965_rx_replenish (scheduled) if 'processed' != 'read' then the
|
|
* iwl->rxq is replenished and the READ INDEX is updated (updating the
|
|
* 'processed' and 'read' driver indexes as well)
|
|
* + A received packet is processed and handed to the kernel network stack,
|
|
* detached from the iwl->rxq. The driver 'processed' index is updated.
|
|
* + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
|
|
* list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
|
|
* INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
|
|
* were enough free buffers and RX_STALLED is set it is cleared.
|
|
*
|
|
*
|
|
* Driver sequence:
|
|
*
|
|
* iwl4965_rx_queue_alloc() Allocates rx_free
|
|
* iwl4965_rx_replenish() Replenishes rx_free list from rx_used, and calls
|
|
* iwl4965_rx_queue_restock
|
|
* iwl4965_rx_queue_restock() Moves available buffers from rx_free into Rx
|
|
* queue, updates firmware pointers, and updates
|
|
* the WRITE index. If insufficient rx_free buffers
|
|
* are available, schedules iwl4965_rx_replenish
|
|
*
|
|
* -- enable interrupts --
|
|
* ISR - iwl4965_rx() Detach iwl4965_rx_mem_buffers from pool up to the
|
|
* READ INDEX, detaching the SKB from the pool.
|
|
* Moves the packet buffer from queue to rx_used.
|
|
* Calls iwl4965_rx_queue_restock to refill any empty
|
|
* slots.
|
|
* ...
|
|
*
|
|
*/
|
|
|
|
/**
|
|
* iwl4965_rx_queue_space - Return number of free slots available in queue.
|
|
*/
|
|
static int iwl4965_rx_queue_space(const struct iwl4965_rx_queue *q)
|
|
{
|
|
int s = q->read - q->write;
|
|
if (s <= 0)
|
|
s += RX_QUEUE_SIZE;
|
|
/* keep some buffer to not confuse full and empty queue */
|
|
s -= 2;
|
|
if (s < 0)
|
|
s = 0;
|
|
return s;
|
|
}
|
|
|
|
/**
|
|
* iwl4965_rx_queue_update_write_ptr - Update the write pointer for the RX queue
|
|
*/
|
|
int iwl4965_rx_queue_update_write_ptr(struct iwl_priv *priv, struct iwl4965_rx_queue *q)
|
|
{
|
|
u32 reg = 0;
|
|
int rc = 0;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&q->lock, flags);
|
|
|
|
if (q->need_update == 0)
|
|
goto exit_unlock;
|
|
|
|
/* If power-saving is in use, make sure device is awake */
|
|
if (test_bit(STATUS_POWER_PMI, &priv->status)) {
|
|
reg = iwl_read32(priv, CSR_UCODE_DRV_GP1);
|
|
|
|
if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
|
|
iwl_set_bit(priv, CSR_GP_CNTRL,
|
|
CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
|
|
goto exit_unlock;
|
|
}
|
|
|
|
rc = iwl_grab_nic_access(priv);
|
|
if (rc)
|
|
goto exit_unlock;
|
|
|
|
/* Device expects a multiple of 8 */
|
|
iwl_write_direct32(priv, FH_RSCSR_CHNL0_WPTR,
|
|
q->write & ~0x7);
|
|
iwl_release_nic_access(priv);
|
|
|
|
/* Else device is assumed to be awake */
|
|
} else
|
|
/* Device expects a multiple of 8 */
|
|
iwl_write32(priv, FH_RSCSR_CHNL0_WPTR, q->write & ~0x7);
|
|
|
|
|
|
q->need_update = 0;
|
|
|
|
exit_unlock:
|
|
spin_unlock_irqrestore(&q->lock, flags);
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* iwl4965_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
|
|
*/
|
|
static inline __le32 iwl4965_dma_addr2rbd_ptr(struct iwl_priv *priv,
|
|
dma_addr_t dma_addr)
|
|
{
|
|
return cpu_to_le32((u32)(dma_addr >> 8));
|
|
}
|
|
|
|
|
|
/**
|
|
* iwl4965_rx_queue_restock - refill RX queue from pre-allocated pool
|
|
*
|
|
* If there are slots in the RX queue that need to be restocked,
|
|
* and we have free pre-allocated buffers, fill the ranks as much
|
|
* as we can, pulling from rx_free.
|
|
*
|
|
* This moves the 'write' index forward to catch up with 'processed', and
|
|
* also updates the memory address in the firmware to reference the new
|
|
* target buffer.
|
|
*/
|
|
static int iwl4965_rx_queue_restock(struct iwl_priv *priv)
|
|
{
|
|
struct iwl4965_rx_queue *rxq = &priv->rxq;
|
|
struct list_head *element;
|
|
struct iwl4965_rx_mem_buffer *rxb;
|
|
unsigned long flags;
|
|
int write, rc;
|
|
|
|
spin_lock_irqsave(&rxq->lock, flags);
|
|
write = rxq->write & ~0x7;
|
|
while ((iwl4965_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
|
|
/* Get next free Rx buffer, remove from free list */
|
|
element = rxq->rx_free.next;
|
|
rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list);
|
|
list_del(element);
|
|
|
|
/* Point to Rx buffer via next RBD in circular buffer */
|
|
rxq->bd[rxq->write] = iwl4965_dma_addr2rbd_ptr(priv, rxb->dma_addr);
|
|
rxq->queue[rxq->write] = rxb;
|
|
rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
|
|
rxq->free_count--;
|
|
}
|
|
spin_unlock_irqrestore(&rxq->lock, flags);
|
|
/* If the pre-allocated buffer pool is dropping low, schedule to
|
|
* refill it */
|
|
if (rxq->free_count <= RX_LOW_WATERMARK)
|
|
queue_work(priv->workqueue, &priv->rx_replenish);
|
|
|
|
|
|
/* If we've added more space for the firmware to place data, tell it.
|
|
* Increment device's write pointer in multiples of 8. */
|
|
if ((write != (rxq->write & ~0x7))
|
|
|| (abs(rxq->write - rxq->read) > 7)) {
|
|
spin_lock_irqsave(&rxq->lock, flags);
|
|
rxq->need_update = 1;
|
|
spin_unlock_irqrestore(&rxq->lock, flags);
|
|
rc = iwl4965_rx_queue_update_write_ptr(priv, rxq);
|
|
if (rc)
|
|
return rc;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* iwl4965_rx_replenish - Move all used packet from rx_used to rx_free
|
|
*
|
|
* When moving to rx_free an SKB is allocated for the slot.
|
|
*
|
|
* Also restock the Rx queue via iwl4965_rx_queue_restock.
|
|
* This is called as a scheduled work item (except for during initialization)
|
|
*/
|
|
static void iwl4965_rx_allocate(struct iwl_priv *priv)
|
|
{
|
|
struct iwl4965_rx_queue *rxq = &priv->rxq;
|
|
struct list_head *element;
|
|
struct iwl4965_rx_mem_buffer *rxb;
|
|
unsigned long flags;
|
|
spin_lock_irqsave(&rxq->lock, flags);
|
|
while (!list_empty(&rxq->rx_used)) {
|
|
element = rxq->rx_used.next;
|
|
rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list);
|
|
|
|
/* Alloc a new receive buffer */
|
|
rxb->skb =
|
|
alloc_skb(priv->hw_params.rx_buf_size,
|
|
__GFP_NOWARN | GFP_ATOMIC);
|
|
if (!rxb->skb) {
|
|
if (net_ratelimit())
|
|
printk(KERN_CRIT DRV_NAME
|
|
": Can not allocate SKB buffers\n");
|
|
/* We don't reschedule replenish work here -- we will
|
|
* call the restock method and if it still needs
|
|
* more buffers it will schedule replenish */
|
|
break;
|
|
}
|
|
priv->alloc_rxb_skb++;
|
|
list_del(element);
|
|
|
|
/* Get physical address of RB/SKB */
|
|
rxb->dma_addr =
|
|
pci_map_single(priv->pci_dev, rxb->skb->data,
|
|
priv->hw_params.rx_buf_size, PCI_DMA_FROMDEVICE);
|
|
list_add_tail(&rxb->list, &rxq->rx_free);
|
|
rxq->free_count++;
|
|
}
|
|
spin_unlock_irqrestore(&rxq->lock, flags);
|
|
}
|
|
|
|
/*
|
|
* this should be called while priv->lock is locked
|
|
*/
|
|
static void __iwl4965_rx_replenish(void *data)
|
|
{
|
|
struct iwl_priv *priv = data;
|
|
|
|
iwl4965_rx_allocate(priv);
|
|
iwl4965_rx_queue_restock(priv);
|
|
}
|
|
|
|
|
|
void iwl4965_rx_replenish(void *data)
|
|
{
|
|
struct iwl_priv *priv = data;
|
|
unsigned long flags;
|
|
|
|
iwl4965_rx_allocate(priv);
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
iwl4965_rx_queue_restock(priv);
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
}
|
|
|
|
/* Assumes that the skb field of the buffers in 'pool' is kept accurate.
|
|
* If an SKB has been detached, the POOL needs to have its SKB set to NULL
|
|
* This free routine walks the list of POOL entries and if SKB is set to
|
|
* non NULL it is unmapped and freed
|
|
*/
|
|
static void iwl4965_rx_queue_free(struct iwl_priv *priv, struct iwl4965_rx_queue *rxq)
|
|
{
|
|
int i;
|
|
for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
|
|
if (rxq->pool[i].skb != NULL) {
|
|
pci_unmap_single(priv->pci_dev,
|
|
rxq->pool[i].dma_addr,
|
|
priv->hw_params.rx_buf_size,
|
|
PCI_DMA_FROMDEVICE);
|
|
dev_kfree_skb(rxq->pool[i].skb);
|
|
}
|
|
}
|
|
|
|
pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
|
|
rxq->dma_addr);
|
|
rxq->bd = NULL;
|
|
}
|
|
|
|
int iwl4965_rx_queue_alloc(struct iwl_priv *priv)
|
|
{
|
|
struct iwl4965_rx_queue *rxq = &priv->rxq;
|
|
struct pci_dev *dev = priv->pci_dev;
|
|
int i;
|
|
|
|
spin_lock_init(&rxq->lock);
|
|
INIT_LIST_HEAD(&rxq->rx_free);
|
|
INIT_LIST_HEAD(&rxq->rx_used);
|
|
|
|
/* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */
|
|
rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
|
|
if (!rxq->bd)
|
|
return -ENOMEM;
|
|
|
|
/* Fill the rx_used queue with _all_ of the Rx buffers */
|
|
for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
|
|
list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
|
|
|
|
/* Set us so that we have processed and used all buffers, but have
|
|
* not restocked the Rx queue with fresh buffers */
|
|
rxq->read = rxq->write = 0;
|
|
rxq->free_count = 0;
|
|
rxq->need_update = 0;
|
|
return 0;
|
|
}
|
|
|
|
void iwl4965_rx_queue_reset(struct iwl_priv *priv, struct iwl4965_rx_queue *rxq)
|
|
{
|
|
unsigned long flags;
|
|
int i;
|
|
spin_lock_irqsave(&rxq->lock, flags);
|
|
INIT_LIST_HEAD(&rxq->rx_free);
|
|
INIT_LIST_HEAD(&rxq->rx_used);
|
|
/* Fill the rx_used queue with _all_ of the Rx buffers */
|
|
for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
|
|
/* In the reset function, these buffers may have been allocated
|
|
* to an SKB, so we need to unmap and free potential storage */
|
|
if (rxq->pool[i].skb != NULL) {
|
|
pci_unmap_single(priv->pci_dev,
|
|
rxq->pool[i].dma_addr,
|
|
priv->hw_params.rx_buf_size,
|
|
PCI_DMA_FROMDEVICE);
|
|
priv->alloc_rxb_skb--;
|
|
dev_kfree_skb(rxq->pool[i].skb);
|
|
rxq->pool[i].skb = NULL;
|
|
}
|
|
list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
|
|
}
|
|
|
|
/* Set us so that we have processed and used all buffers, but have
|
|
* not restocked the Rx queue with fresh buffers */
|
|
rxq->read = rxq->write = 0;
|
|
rxq->free_count = 0;
|
|
spin_unlock_irqrestore(&rxq->lock, flags);
|
|
}
|
|
|
|
/* Convert linear signal-to-noise ratio into dB */
|
|
static u8 ratio2dB[100] = {
|
|
/* 0 1 2 3 4 5 6 7 8 9 */
|
|
0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
|
|
20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
|
|
26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
|
|
29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
|
|
32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
|
|
34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
|
|
36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
|
|
37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
|
|
38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
|
|
39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
|
|
};
|
|
|
|
/* Calculates a relative dB value from a ratio of linear
|
|
* (i.e. not dB) signal levels.
|
|
* Conversion assumes that levels are voltages (20*log), not powers (10*log). */
|
|
int iwl4965_calc_db_from_ratio(int sig_ratio)
|
|
{
|
|
/* 1000:1 or higher just report as 60 dB */
|
|
if (sig_ratio >= 1000)
|
|
return 60;
|
|
|
|
/* 100:1 or higher, divide by 10 and use table,
|
|
* add 20 dB to make up for divide by 10 */
|
|
if (sig_ratio >= 100)
|
|
return (20 + (int)ratio2dB[sig_ratio/10]);
|
|
|
|
/* We shouldn't see this */
|
|
if (sig_ratio < 1)
|
|
return 0;
|
|
|
|
/* Use table for ratios 1:1 - 99:1 */
|
|
return (int)ratio2dB[sig_ratio];
|
|
}
|
|
|
|
#define PERFECT_RSSI (-20) /* dBm */
|
|
#define WORST_RSSI (-95) /* dBm */
|
|
#define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
|
|
|
|
/* Calculate an indication of rx signal quality (a percentage, not dBm!).
|
|
* See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
|
|
* about formulas used below. */
|
|
int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm)
|
|
{
|
|
int sig_qual;
|
|
int degradation = PERFECT_RSSI - rssi_dbm;
|
|
|
|
/* If we get a noise measurement, use signal-to-noise ratio (SNR)
|
|
* as indicator; formula is (signal dbm - noise dbm).
|
|
* SNR at or above 40 is a great signal (100%).
|
|
* Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
|
|
* Weakest usable signal is usually 10 - 15 dB SNR. */
|
|
if (noise_dbm) {
|
|
if (rssi_dbm - noise_dbm >= 40)
|
|
return 100;
|
|
else if (rssi_dbm < noise_dbm)
|
|
return 0;
|
|
sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
|
|
|
|
/* Else use just the signal level.
|
|
* This formula is a least squares fit of data points collected and
|
|
* compared with a reference system that had a percentage (%) display
|
|
* for signal quality. */
|
|
} else
|
|
sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
|
|
(15 * RSSI_RANGE + 62 * degradation)) /
|
|
(RSSI_RANGE * RSSI_RANGE);
|
|
|
|
if (sig_qual > 100)
|
|
sig_qual = 100;
|
|
else if (sig_qual < 1)
|
|
sig_qual = 0;
|
|
|
|
return sig_qual;
|
|
}
|
|
|
|
/**
|
|
* iwl4965_rx_handle - Main entry function for receiving responses from uCode
|
|
*
|
|
* Uses the priv->rx_handlers callback function array to invoke
|
|
* the appropriate handlers, including command responses,
|
|
* frame-received notifications, and other notifications.
|
|
*/
|
|
static void iwl4965_rx_handle(struct iwl_priv *priv)
|
|
{
|
|
struct iwl4965_rx_mem_buffer *rxb;
|
|
struct iwl4965_rx_packet *pkt;
|
|
struct iwl4965_rx_queue *rxq = &priv->rxq;
|
|
u32 r, i;
|
|
int reclaim;
|
|
unsigned long flags;
|
|
u8 fill_rx = 0;
|
|
u32 count = 8;
|
|
|
|
/* uCode's read index (stored in shared DRAM) indicates the last Rx
|
|
* buffer that the driver may process (last buffer filled by ucode). */
|
|
r = iwl4965_hw_get_rx_read(priv);
|
|
i = rxq->read;
|
|
|
|
/* Rx interrupt, but nothing sent from uCode */
|
|
if (i == r)
|
|
IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
|
|
|
|
if (iwl4965_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
|
|
fill_rx = 1;
|
|
|
|
while (i != r) {
|
|
rxb = rxq->queue[i];
|
|
|
|
/* If an RXB doesn't have a Rx queue slot associated with it,
|
|
* then a bug has been introduced in the queue refilling
|
|
* routines -- catch it here */
|
|
BUG_ON(rxb == NULL);
|
|
|
|
rxq->queue[i] = NULL;
|
|
|
|
pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
|
|
priv->hw_params.rx_buf_size,
|
|
PCI_DMA_FROMDEVICE);
|
|
pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
|
|
|
|
/* Reclaim a command buffer only if this packet is a response
|
|
* to a (driver-originated) command.
|
|
* If the packet (e.g. Rx frame) originated from uCode,
|
|
* there is no command buffer to reclaim.
|
|
* Ucode should set SEQ_RX_FRAME bit if ucode-originated,
|
|
* but apparently a few don't get set; catch them here. */
|
|
reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
|
|
(pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
|
|
(pkt->hdr.cmd != REPLY_RX) &&
|
|
(pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
|
|
(pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
|
|
(pkt->hdr.cmd != REPLY_TX);
|
|
|
|
/* Based on type of command response or notification,
|
|
* handle those that need handling via function in
|
|
* rx_handlers table. See iwl4965_setup_rx_handlers() */
|
|
if (priv->rx_handlers[pkt->hdr.cmd]) {
|
|
IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
|
|
"r = %d, i = %d, %s, 0x%02x\n", r, i,
|
|
get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
|
|
priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
|
|
} else {
|
|
/* No handling needed */
|
|
IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
|
|
"r %d i %d No handler needed for %s, 0x%02x\n",
|
|
r, i, get_cmd_string(pkt->hdr.cmd),
|
|
pkt->hdr.cmd);
|
|
}
|
|
|
|
if (reclaim) {
|
|
/* Invoke any callbacks, transfer the skb to caller, and
|
|
* fire off the (possibly) blocking iwl_send_cmd()
|
|
* as we reclaim the driver command queue */
|
|
if (rxb && rxb->skb)
|
|
iwl4965_tx_cmd_complete(priv, rxb);
|
|
else
|
|
IWL_WARNING("Claim null rxb?\n");
|
|
}
|
|
|
|
/* For now we just don't re-use anything. We can tweak this
|
|
* later to try and re-use notification packets and SKBs that
|
|
* fail to Rx correctly */
|
|
if (rxb->skb != NULL) {
|
|
priv->alloc_rxb_skb--;
|
|
dev_kfree_skb_any(rxb->skb);
|
|
rxb->skb = NULL;
|
|
}
|
|
|
|
pci_unmap_single(priv->pci_dev, rxb->dma_addr,
|
|
priv->hw_params.rx_buf_size,
|
|
PCI_DMA_FROMDEVICE);
|
|
spin_lock_irqsave(&rxq->lock, flags);
|
|
list_add_tail(&rxb->list, &priv->rxq.rx_used);
|
|
spin_unlock_irqrestore(&rxq->lock, flags);
|
|
i = (i + 1) & RX_QUEUE_MASK;
|
|
/* If there are a lot of unused frames,
|
|
* restock the Rx queue so ucode wont assert. */
|
|
if (fill_rx) {
|
|
count++;
|
|
if (count >= 8) {
|
|
priv->rxq.read = i;
|
|
__iwl4965_rx_replenish(priv);
|
|
count = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Backtrack one entry */
|
|
priv->rxq.read = i;
|
|
iwl4965_rx_queue_restock(priv);
|
|
}
|
|
|
|
/**
|
|
* iwl4965_tx_queue_update_write_ptr - Send new write index to hardware
|
|
*/
|
|
static int iwl4965_tx_queue_update_write_ptr(struct iwl_priv *priv,
|
|
struct iwl4965_tx_queue *txq)
|
|
{
|
|
u32 reg = 0;
|
|
int rc = 0;
|
|
int txq_id = txq->q.id;
|
|
|
|
if (txq->need_update == 0)
|
|
return rc;
|
|
|
|
/* if we're trying to save power */
|
|
if (test_bit(STATUS_POWER_PMI, &priv->status)) {
|
|
/* wake up nic if it's powered down ...
|
|
* uCode will wake up, and interrupt us again, so next
|
|
* time we'll skip this part. */
|
|
reg = iwl_read32(priv, CSR_UCODE_DRV_GP1);
|
|
|
|
if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
|
|
IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
|
|
iwl_set_bit(priv, CSR_GP_CNTRL,
|
|
CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
|
|
return rc;
|
|
}
|
|
|
|
/* restore this queue's parameters in nic hardware. */
|
|
rc = iwl_grab_nic_access(priv);
|
|
if (rc)
|
|
return rc;
|
|
iwl_write_direct32(priv, HBUS_TARG_WRPTR,
|
|
txq->q.write_ptr | (txq_id << 8));
|
|
iwl_release_nic_access(priv);
|
|
|
|
/* else not in power-save mode, uCode will never sleep when we're
|
|
* trying to tx (during RFKILL, we're not trying to tx). */
|
|
} else
|
|
iwl_write32(priv, HBUS_TARG_WRPTR,
|
|
txq->q.write_ptr | (txq_id << 8));
|
|
|
|
txq->need_update = 0;
|
|
|
|
return rc;
|
|
}
|
|
|
|
#ifdef CONFIG_IWLWIFI_DEBUG
|
|
static void iwl4965_print_rx_config_cmd(struct iwl4965_rxon_cmd *rxon)
|
|
{
|
|
DECLARE_MAC_BUF(mac);
|
|
|
|
IWL_DEBUG_RADIO("RX CONFIG:\n");
|
|
iwl_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
|
|
IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
|
|
IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
|
|
IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
|
|
le32_to_cpu(rxon->filter_flags));
|
|
IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
|
|
IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
|
|
rxon->ofdm_basic_rates);
|
|
IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
|
|
IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
|
|
print_mac(mac, rxon->node_addr));
|
|
IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
|
|
print_mac(mac, rxon->bssid_addr));
|
|
IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
|
|
}
|
|
#endif
|
|
|
|
static void iwl4965_enable_interrupts(struct iwl_priv *priv)
|
|
{
|
|
IWL_DEBUG_ISR("Enabling interrupts\n");
|
|
set_bit(STATUS_INT_ENABLED, &priv->status);
|
|
iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
|
|
}
|
|
|
|
/* call this function to flush any scheduled tasklet */
|
|
static inline void iwl_synchronize_irq(struct iwl_priv *priv)
|
|
{
|
|
/* wait to make sure we flush pedding tasklet*/
|
|
synchronize_irq(priv->pci_dev->irq);
|
|
tasklet_kill(&priv->irq_tasklet);
|
|
}
|
|
|
|
static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
|
|
{
|
|
clear_bit(STATUS_INT_ENABLED, &priv->status);
|
|
|
|
/* disable interrupts from uCode/NIC to host */
|
|
iwl_write32(priv, CSR_INT_MASK, 0x00000000);
|
|
|
|
/* acknowledge/clear/reset any interrupts still pending
|
|
* from uCode or flow handler (Rx/Tx DMA) */
|
|
iwl_write32(priv, CSR_INT, 0xffffffff);
|
|
iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
|
|
IWL_DEBUG_ISR("Disabled interrupts\n");
|
|
}
|
|
|
|
static const char *desc_lookup(int i)
|
|
{
|
|
switch (i) {
|
|
case 1:
|
|
return "FAIL";
|
|
case 2:
|
|
return "BAD_PARAM";
|
|
case 3:
|
|
return "BAD_CHECKSUM";
|
|
case 4:
|
|
return "NMI_INTERRUPT";
|
|
case 5:
|
|
return "SYSASSERT";
|
|
case 6:
|
|
return "FATAL_ERROR";
|
|
}
|
|
|
|
return "UNKNOWN";
|
|
}
|
|
|
|
#define ERROR_START_OFFSET (1 * sizeof(u32))
|
|
#define ERROR_ELEM_SIZE (7 * sizeof(u32))
|
|
|
|
static void iwl4965_dump_nic_error_log(struct iwl_priv *priv)
|
|
{
|
|
u32 data2, line;
|
|
u32 desc, time, count, base, data1;
|
|
u32 blink1, blink2, ilink1, ilink2;
|
|
int rc;
|
|
|
|
base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
|
|
|
|
if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
|
|
IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
|
|
return;
|
|
}
|
|
|
|
rc = iwl_grab_nic_access(priv);
|
|
if (rc) {
|
|
IWL_WARNING("Can not read from adapter at this time.\n");
|
|
return;
|
|
}
|
|
|
|
count = iwl_read_targ_mem(priv, base);
|
|
|
|
if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
|
|
IWL_ERROR("Start IWL Error Log Dump:\n");
|
|
IWL_ERROR("Status: 0x%08lX, count: %d\n", priv->status, count);
|
|
}
|
|
|
|
desc = iwl_read_targ_mem(priv, base + 1 * sizeof(u32));
|
|
blink1 = iwl_read_targ_mem(priv, base + 3 * sizeof(u32));
|
|
blink2 = iwl_read_targ_mem(priv, base + 4 * sizeof(u32));
|
|
ilink1 = iwl_read_targ_mem(priv, base + 5 * sizeof(u32));
|
|
ilink2 = iwl_read_targ_mem(priv, base + 6 * sizeof(u32));
|
|
data1 = iwl_read_targ_mem(priv, base + 7 * sizeof(u32));
|
|
data2 = iwl_read_targ_mem(priv, base + 8 * sizeof(u32));
|
|
line = iwl_read_targ_mem(priv, base + 9 * sizeof(u32));
|
|
time = iwl_read_targ_mem(priv, base + 11 * sizeof(u32));
|
|
|
|
IWL_ERROR("Desc Time "
|
|
"data1 data2 line\n");
|
|
IWL_ERROR("%-13s (#%d) %010u 0x%08X 0x%08X %u\n",
|
|
desc_lookup(desc), desc, time, data1, data2, line);
|
|
IWL_ERROR("blink1 blink2 ilink1 ilink2\n");
|
|
IWL_ERROR("0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
|
|
ilink1, ilink2);
|
|
|
|
iwl_release_nic_access(priv);
|
|
}
|
|
|
|
#define EVENT_START_OFFSET (4 * sizeof(u32))
|
|
|
|
/**
|
|
* iwl4965_print_event_log - Dump error event log to syslog
|
|
*
|
|
* NOTE: Must be called with iwl_grab_nic_access() already obtained!
|
|
*/
|
|
static void iwl4965_print_event_log(struct iwl_priv *priv, u32 start_idx,
|
|
u32 num_events, u32 mode)
|
|
{
|
|
u32 i;
|
|
u32 base; /* SRAM byte address of event log header */
|
|
u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
|
|
u32 ptr; /* SRAM byte address of log data */
|
|
u32 ev, time, data; /* event log data */
|
|
|
|
if (num_events == 0)
|
|
return;
|
|
|
|
base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
|
|
|
|
if (mode == 0)
|
|
event_size = 2 * sizeof(u32);
|
|
else
|
|
event_size = 3 * sizeof(u32);
|
|
|
|
ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
|
|
|
|
/* "time" is actually "data" for mode 0 (no timestamp).
|
|
* place event id # at far right for easier visual parsing. */
|
|
for (i = 0; i < num_events; i++) {
|
|
ev = iwl_read_targ_mem(priv, ptr);
|
|
ptr += sizeof(u32);
|
|
time = iwl_read_targ_mem(priv, ptr);
|
|
ptr += sizeof(u32);
|
|
if (mode == 0)
|
|
IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
|
|
else {
|
|
data = iwl_read_targ_mem(priv, ptr);
|
|
ptr += sizeof(u32);
|
|
IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void iwl4965_dump_nic_event_log(struct iwl_priv *priv)
|
|
{
|
|
int rc;
|
|
u32 base; /* SRAM byte address of event log header */
|
|
u32 capacity; /* event log capacity in # entries */
|
|
u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
|
|
u32 num_wraps; /* # times uCode wrapped to top of log */
|
|
u32 next_entry; /* index of next entry to be written by uCode */
|
|
u32 size; /* # entries that we'll print */
|
|
|
|
base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
|
|
if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
|
|
IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
|
|
return;
|
|
}
|
|
|
|
rc = iwl_grab_nic_access(priv);
|
|
if (rc) {
|
|
IWL_WARNING("Can not read from adapter at this time.\n");
|
|
return;
|
|
}
|
|
|
|
/* event log header */
|
|
capacity = iwl_read_targ_mem(priv, base);
|
|
mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
|
|
num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
|
|
next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
|
|
|
|
size = num_wraps ? capacity : next_entry;
|
|
|
|
/* bail out if nothing in log */
|
|
if (size == 0) {
|
|
IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
|
|
iwl_release_nic_access(priv);
|
|
return;
|
|
}
|
|
|
|
IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
|
|
size, num_wraps);
|
|
|
|
/* if uCode has wrapped back to top of log, start at the oldest entry,
|
|
* i.e the next one that uCode would fill. */
|
|
if (num_wraps)
|
|
iwl4965_print_event_log(priv, next_entry,
|
|
capacity - next_entry, mode);
|
|
|
|
/* (then/else) start at top of log */
|
|
iwl4965_print_event_log(priv, 0, next_entry, mode);
|
|
|
|
iwl_release_nic_access(priv);
|
|
}
|
|
|
|
/**
|
|
* iwl4965_irq_handle_error - called for HW or SW error interrupt from card
|
|
*/
|
|
static void iwl4965_irq_handle_error(struct iwl_priv *priv)
|
|
{
|
|
/* Set the FW error flag -- cleared on iwl4965_down */
|
|
set_bit(STATUS_FW_ERROR, &priv->status);
|
|
|
|
/* Cancel currently queued command. */
|
|
clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
|
|
|
|
#ifdef CONFIG_IWLWIFI_DEBUG
|
|
if (iwl_debug_level & IWL_DL_FW_ERRORS) {
|
|
iwl4965_dump_nic_error_log(priv);
|
|
iwl4965_dump_nic_event_log(priv);
|
|
iwl4965_print_rx_config_cmd(&priv->staging_rxon);
|
|
}
|
|
#endif
|
|
|
|
wake_up_interruptible(&priv->wait_command_queue);
|
|
|
|
/* Keep the restart process from trying to send host
|
|
* commands by clearing the INIT status bit */
|
|
clear_bit(STATUS_READY, &priv->status);
|
|
|
|
if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
|
|
IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
|
|
"Restarting adapter due to uCode error.\n");
|
|
|
|
if (iwl_is_associated(priv)) {
|
|
memcpy(&priv->recovery_rxon, &priv->active_rxon,
|
|
sizeof(priv->recovery_rxon));
|
|
priv->error_recovering = 1;
|
|
}
|
|
queue_work(priv->workqueue, &priv->restart);
|
|
}
|
|
}
|
|
|
|
static void iwl4965_error_recovery(struct iwl_priv *priv)
|
|
{
|
|
unsigned long flags;
|
|
|
|
memcpy(&priv->staging_rxon, &priv->recovery_rxon,
|
|
sizeof(priv->staging_rxon));
|
|
priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
|
|
iwl4965_commit_rxon(priv);
|
|
|
|
iwl4965_rxon_add_station(priv, priv->bssid, 1);
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
|
|
priv->error_recovering = 0;
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
}
|
|
|
|
static void iwl4965_irq_tasklet(struct iwl_priv *priv)
|
|
{
|
|
u32 inta, handled = 0;
|
|
u32 inta_fh;
|
|
unsigned long flags;
|
|
#ifdef CONFIG_IWLWIFI_DEBUG
|
|
u32 inta_mask;
|
|
#endif
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
|
|
/* Ack/clear/reset pending uCode interrupts.
|
|
* Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
|
|
* and will clear only when CSR_FH_INT_STATUS gets cleared. */
|
|
inta = iwl_read32(priv, CSR_INT);
|
|
iwl_write32(priv, CSR_INT, inta);
|
|
|
|
/* Ack/clear/reset pending flow-handler (DMA) interrupts.
|
|
* Any new interrupts that happen after this, either while we're
|
|
* in this tasklet, or later, will show up in next ISR/tasklet. */
|
|
inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
|
|
iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
|
|
|
|
#ifdef CONFIG_IWLWIFI_DEBUG
|
|
if (iwl_debug_level & IWL_DL_ISR) {
|
|
/* just for debug */
|
|
inta_mask = iwl_read32(priv, CSR_INT_MASK);
|
|
IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
|
|
inta, inta_mask, inta_fh);
|
|
}
|
|
#endif
|
|
|
|
/* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
|
|
* atomic, make sure that inta covers all the interrupts that
|
|
* we've discovered, even if FH interrupt came in just after
|
|
* reading CSR_INT. */
|
|
if (inta_fh & CSR49_FH_INT_RX_MASK)
|
|
inta |= CSR_INT_BIT_FH_RX;
|
|
if (inta_fh & CSR49_FH_INT_TX_MASK)
|
|
inta |= CSR_INT_BIT_FH_TX;
|
|
|
|
/* Now service all interrupt bits discovered above. */
|
|
if (inta & CSR_INT_BIT_HW_ERR) {
|
|
IWL_ERROR("Microcode HW error detected. Restarting.\n");
|
|
|
|
/* Tell the device to stop sending interrupts */
|
|
iwl4965_disable_interrupts(priv);
|
|
|
|
iwl4965_irq_handle_error(priv);
|
|
|
|
handled |= CSR_INT_BIT_HW_ERR;
|
|
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
return;
|
|
}
|
|
|
|
#ifdef CONFIG_IWLWIFI_DEBUG
|
|
if (iwl_debug_level & (IWL_DL_ISR)) {
|
|
/* NIC fires this, but we don't use it, redundant with WAKEUP */
|
|
if (inta & CSR_INT_BIT_SCD)
|
|
IWL_DEBUG_ISR("Scheduler finished to transmit "
|
|
"the frame/frames.\n");
|
|
|
|
/* Alive notification via Rx interrupt will do the real work */
|
|
if (inta & CSR_INT_BIT_ALIVE)
|
|
IWL_DEBUG_ISR("Alive interrupt\n");
|
|
}
|
|
#endif
|
|
/* Safely ignore these bits for debug checks below */
|
|
inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
|
|
|
|
/* HW RF KILL switch toggled */
|
|
if (inta & CSR_INT_BIT_RF_KILL) {
|
|
int hw_rf_kill = 0;
|
|
if (!(iwl_read32(priv, CSR_GP_CNTRL) &
|
|
CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
|
|
hw_rf_kill = 1;
|
|
|
|
IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL | IWL_DL_ISR,
|
|
"RF_KILL bit toggled to %s.\n",
|
|
hw_rf_kill ? "disable radio":"enable radio");
|
|
|
|
/* Queue restart only if RF_KILL switch was set to "kill"
|
|
* when we loaded driver, and is now set to "enable".
|
|
* After we're Alive, RF_KILL gets handled by
|
|
* iwl4965_rx_card_state_notif() */
|
|
if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
|
|
clear_bit(STATUS_RF_KILL_HW, &priv->status);
|
|
queue_work(priv->workqueue, &priv->restart);
|
|
}
|
|
|
|
handled |= CSR_INT_BIT_RF_KILL;
|
|
}
|
|
|
|
/* Chip got too hot and stopped itself */
|
|
if (inta & CSR_INT_BIT_CT_KILL) {
|
|
IWL_ERROR("Microcode CT kill error detected.\n");
|
|
handled |= CSR_INT_BIT_CT_KILL;
|
|
}
|
|
|
|
/* Error detected by uCode */
|
|
if (inta & CSR_INT_BIT_SW_ERR) {
|
|
IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
|
|
inta);
|
|
iwl4965_irq_handle_error(priv);
|
|
handled |= CSR_INT_BIT_SW_ERR;
|
|
}
|
|
|
|
/* uCode wakes up after power-down sleep */
|
|
if (inta & CSR_INT_BIT_WAKEUP) {
|
|
IWL_DEBUG_ISR("Wakeup interrupt\n");
|
|
iwl4965_rx_queue_update_write_ptr(priv, &priv->rxq);
|
|
iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[0]);
|
|
iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[1]);
|
|
iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[2]);
|
|
iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[3]);
|
|
iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[4]);
|
|
iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[5]);
|
|
|
|
handled |= CSR_INT_BIT_WAKEUP;
|
|
}
|
|
|
|
/* All uCode command responses, including Tx command responses,
|
|
* Rx "responses" (frame-received notification), and other
|
|
* notifications from uCode come through here*/
|
|
if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
|
|
iwl4965_rx_handle(priv);
|
|
handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
|
|
}
|
|
|
|
if (inta & CSR_INT_BIT_FH_TX) {
|
|
IWL_DEBUG_ISR("Tx interrupt\n");
|
|
handled |= CSR_INT_BIT_FH_TX;
|
|
}
|
|
|
|
if (inta & ~handled)
|
|
IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
|
|
|
|
if (inta & ~CSR_INI_SET_MASK) {
|
|
IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
|
|
inta & ~CSR_INI_SET_MASK);
|
|
IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
|
|
}
|
|
|
|
/* Re-enable all interrupts */
|
|
/* only Re-enable if diabled by irq */
|
|
if (test_bit(STATUS_INT_ENABLED, &priv->status))
|
|
iwl4965_enable_interrupts(priv);
|
|
|
|
#ifdef CONFIG_IWLWIFI_DEBUG
|
|
if (iwl_debug_level & (IWL_DL_ISR)) {
|
|
inta = iwl_read32(priv, CSR_INT);
|
|
inta_mask = iwl_read32(priv, CSR_INT_MASK);
|
|
inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
|
|
IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
|
|
"flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
|
|
}
|
|
#endif
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
}
|
|
|
|
static irqreturn_t iwl4965_isr(int irq, void *data)
|
|
{
|
|
struct iwl_priv *priv = data;
|
|
u32 inta, inta_mask;
|
|
u32 inta_fh;
|
|
if (!priv)
|
|
return IRQ_NONE;
|
|
|
|
spin_lock(&priv->lock);
|
|
|
|
/* Disable (but don't clear!) interrupts here to avoid
|
|
* back-to-back ISRs and sporadic interrupts from our NIC.
|
|
* If we have something to service, the tasklet will re-enable ints.
|
|
* If we *don't* have something, we'll re-enable before leaving here. */
|
|
inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
|
|
iwl_write32(priv, CSR_INT_MASK, 0x00000000);
|
|
|
|
/* Discover which interrupts are active/pending */
|
|
inta = iwl_read32(priv, CSR_INT);
|
|
inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
|
|
|
|
/* Ignore interrupt if there's nothing in NIC to service.
|
|
* This may be due to IRQ shared with another device,
|
|
* or due to sporadic interrupts thrown from our NIC. */
|
|
if (!inta && !inta_fh) {
|
|
IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
|
|
goto none;
|
|
}
|
|
|
|
if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
|
|
/* Hardware disappeared. It might have already raised
|
|
* an interrupt */
|
|
IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
|
|
goto unplugged;
|
|
}
|
|
|
|
IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
|
|
inta, inta_mask, inta_fh);
|
|
|
|
inta &= ~CSR_INT_BIT_SCD;
|
|
|
|
/* iwl4965_irq_tasklet() will service interrupts and re-enable them */
|
|
if (likely(inta || inta_fh))
|
|
tasklet_schedule(&priv->irq_tasklet);
|
|
|
|
unplugged:
|
|
spin_unlock(&priv->lock);
|
|
return IRQ_HANDLED;
|
|
|
|
none:
|
|
/* re-enable interrupts here since we don't have anything to service. */
|
|
/* only Re-enable if diabled by irq */
|
|
if (test_bit(STATUS_INT_ENABLED, &priv->status))
|
|
iwl4965_enable_interrupts(priv);
|
|
spin_unlock(&priv->lock);
|
|
return IRQ_NONE;
|
|
}
|
|
|
|
/* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
|
|
* sending probe req. This should be set long enough to hear probe responses
|
|
* from more than one AP. */
|
|
#define IWL_ACTIVE_DWELL_TIME_24 (20) /* all times in msec */
|
|
#define IWL_ACTIVE_DWELL_TIME_52 (10)
|
|
|
|
/* For faster active scanning, scan will move to the next channel if fewer than
|
|
* PLCP_QUIET_THRESH packets are heard on this channel within
|
|
* ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell
|
|
* time if it's a quiet channel (nothing responded to our probe, and there's
|
|
* no other traffic).
|
|
* Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
|
|
#define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */
|
|
#define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(5) /* msec */
|
|
|
|
/* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
|
|
* Must be set longer than active dwell time.
|
|
* For the most reliable scan, set > AP beacon interval (typically 100msec). */
|
|
#define IWL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */
|
|
#define IWL_PASSIVE_DWELL_TIME_52 (10)
|
|
#define IWL_PASSIVE_DWELL_BASE (100)
|
|
#define IWL_CHANNEL_TUNE_TIME 5
|
|
|
|
static inline u16 iwl4965_get_active_dwell_time(struct iwl_priv *priv,
|
|
enum ieee80211_band band)
|
|
{
|
|
if (band == IEEE80211_BAND_5GHZ)
|
|
return IWL_ACTIVE_DWELL_TIME_52;
|
|
else
|
|
return IWL_ACTIVE_DWELL_TIME_24;
|
|
}
|
|
|
|
static u16 iwl4965_get_passive_dwell_time(struct iwl_priv *priv,
|
|
enum ieee80211_band band)
|
|
{
|
|
u16 active = iwl4965_get_active_dwell_time(priv, band);
|
|
u16 passive = (band != IEEE80211_BAND_5GHZ) ?
|
|
IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
|
|
IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
|
|
|
|
if (iwl_is_associated(priv)) {
|
|
/* If we're associated, we clamp the maximum passive
|
|
* dwell time to be 98% of the beacon interval (minus
|
|
* 2 * channel tune time) */
|
|
passive = priv->beacon_int;
|
|
if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
|
|
passive = IWL_PASSIVE_DWELL_BASE;
|
|
passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
|
|
}
|
|
|
|
if (passive <= active)
|
|
passive = active + 1;
|
|
|
|
return passive;
|
|
}
|
|
|
|
static int iwl4965_get_channels_for_scan(struct iwl_priv *priv,
|
|
enum ieee80211_band band,
|
|
u8 is_active, u8 direct_mask,
|
|
struct iwl4965_scan_channel *scan_ch)
|
|
{
|
|
const struct ieee80211_channel *channels = NULL;
|
|
const struct ieee80211_supported_band *sband;
|
|
const struct iwl_channel_info *ch_info;
|
|
u16 passive_dwell = 0;
|
|
u16 active_dwell = 0;
|
|
int added, i;
|
|
|
|
sband = iwl4965_get_hw_mode(priv, band);
|
|
if (!sband)
|
|
return 0;
|
|
|
|
channels = sband->channels;
|
|
|
|
active_dwell = iwl4965_get_active_dwell_time(priv, band);
|
|
passive_dwell = iwl4965_get_passive_dwell_time(priv, band);
|
|
|
|
for (i = 0, added = 0; i < sband->n_channels; i++) {
|
|
if (channels[i].flags & IEEE80211_CHAN_DISABLED)
|
|
continue;
|
|
|
|
scan_ch->channel = ieee80211_frequency_to_channel(channels[i].center_freq);
|
|
|
|
ch_info = iwl_get_channel_info(priv, band,
|
|
scan_ch->channel);
|
|
if (!is_channel_valid(ch_info)) {
|
|
IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
|
|
scan_ch->channel);
|
|
continue;
|
|
}
|
|
|
|
if (!is_active || is_channel_passive(ch_info) ||
|
|
(channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN))
|
|
scan_ch->type = 0; /* passive */
|
|
else
|
|
scan_ch->type = 1; /* active */
|
|
|
|
if (scan_ch->type & 1)
|
|
scan_ch->type |= (direct_mask << 1);
|
|
|
|
scan_ch->active_dwell = cpu_to_le16(active_dwell);
|
|
scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
|
|
|
|
/* Set txpower levels to defaults */
|
|
scan_ch->tpc.dsp_atten = 110;
|
|
/* scan_pwr_info->tpc.dsp_atten; */
|
|
|
|
/*scan_pwr_info->tpc.tx_gain; */
|
|
if (band == IEEE80211_BAND_5GHZ)
|
|
scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
|
|
else {
|
|
scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
|
|
/* NOTE: if we were doing 6Mb OFDM for scans we'd use
|
|
* power level:
|
|
* scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
|
|
*/
|
|
}
|
|
|
|
IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
|
|
scan_ch->channel,
|
|
(scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
|
|
(scan_ch->type & 1) ?
|
|
active_dwell : passive_dwell);
|
|
|
|
scan_ch++;
|
|
added++;
|
|
}
|
|
|
|
IWL_DEBUG_SCAN("total channels to scan %d \n", added);
|
|
return added;
|
|
}
|
|
|
|
static void iwl4965_init_hw_rates(struct iwl_priv *priv,
|
|
struct ieee80211_rate *rates)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < IWL_RATE_COUNT; i++) {
|
|
rates[i].bitrate = iwl4965_rates[i].ieee * 5;
|
|
rates[i].hw_value = i; /* Rate scaling will work on indexes */
|
|
rates[i].hw_value_short = i;
|
|
rates[i].flags = 0;
|
|
if ((i > IWL_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
|
|
/*
|
|
* If CCK != 1M then set short preamble rate flag.
|
|
*/
|
|
rates[i].flags |=
|
|
(iwl4965_rates[i].plcp == IWL_RATE_1M_PLCP) ?
|
|
0 : IEEE80211_RATE_SHORT_PREAMBLE;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* iwl4965_init_geos - Initialize mac80211's geo/channel info based from eeprom
|
|
*/
|
|
int iwl4965_init_geos(struct iwl_priv *priv)
|
|
{
|
|
struct iwl_channel_info *ch;
|
|
struct ieee80211_supported_band *sband;
|
|
struct ieee80211_channel *channels;
|
|
struct ieee80211_channel *geo_ch;
|
|
struct ieee80211_rate *rates;
|
|
int i = 0;
|
|
|
|
if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
|
|
priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
|
|
IWL_DEBUG_INFO("Geography modes already initialized.\n");
|
|
set_bit(STATUS_GEO_CONFIGURED, &priv->status);
|
|
return 0;
|
|
}
|
|
|
|
channels = kzalloc(sizeof(struct ieee80211_channel) *
|
|
priv->channel_count, GFP_KERNEL);
|
|
if (!channels)
|
|
return -ENOMEM;
|
|
|
|
rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_RATE_COUNT + 1)),
|
|
GFP_KERNEL);
|
|
if (!rates) {
|
|
kfree(channels);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/* 5.2GHz channels start after the 2.4GHz channels */
|
|
sband = &priv->bands[IEEE80211_BAND_5GHZ];
|
|
sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
|
|
/* just OFDM */
|
|
sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
|
|
sband->n_bitrates = IWL_RATE_COUNT - IWL_FIRST_OFDM_RATE;
|
|
|
|
iwl4965_init_ht_hw_capab(priv, &sband->ht_info, IEEE80211_BAND_5GHZ);
|
|
|
|
sband = &priv->bands[IEEE80211_BAND_2GHZ];
|
|
sband->channels = channels;
|
|
/* OFDM & CCK */
|
|
sband->bitrates = rates;
|
|
sband->n_bitrates = IWL_RATE_COUNT;
|
|
|
|
iwl4965_init_ht_hw_capab(priv, &sband->ht_info, IEEE80211_BAND_2GHZ);
|
|
|
|
priv->ieee_channels = channels;
|
|
priv->ieee_rates = rates;
|
|
|
|
iwl4965_init_hw_rates(priv, rates);
|
|
|
|
for (i = 0; i < priv->channel_count; i++) {
|
|
ch = &priv->channel_info[i];
|
|
|
|
/* FIXME: might be removed if scan is OK */
|
|
if (!is_channel_valid(ch))
|
|
continue;
|
|
|
|
if (is_channel_a_band(ch))
|
|
sband = &priv->bands[IEEE80211_BAND_5GHZ];
|
|
else
|
|
sband = &priv->bands[IEEE80211_BAND_2GHZ];
|
|
|
|
geo_ch = &sband->channels[sband->n_channels++];
|
|
|
|
geo_ch->center_freq = ieee80211_channel_to_frequency(ch->channel);
|
|
geo_ch->max_power = ch->max_power_avg;
|
|
geo_ch->max_antenna_gain = 0xff;
|
|
geo_ch->hw_value = ch->channel;
|
|
|
|
if (is_channel_valid(ch)) {
|
|
if (!(ch->flags & EEPROM_CHANNEL_IBSS))
|
|
geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
|
|
|
|
if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
|
|
geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
|
|
|
|
if (ch->flags & EEPROM_CHANNEL_RADAR)
|
|
geo_ch->flags |= IEEE80211_CHAN_RADAR;
|
|
|
|
if (ch->max_power_avg > priv->max_channel_txpower_limit)
|
|
priv->max_channel_txpower_limit =
|
|
ch->max_power_avg;
|
|
} else {
|
|
geo_ch->flags |= IEEE80211_CHAN_DISABLED;
|
|
}
|
|
|
|
/* Save flags for reg domain usage */
|
|
geo_ch->orig_flags = geo_ch->flags;
|
|
|
|
IWL_DEBUG_INFO("Channel %d Freq=%d[%sGHz] %s flag=0%X\n",
|
|
ch->channel, geo_ch->center_freq,
|
|
is_channel_a_band(ch) ? "5.2" : "2.4",
|
|
geo_ch->flags & IEEE80211_CHAN_DISABLED ?
|
|
"restricted" : "valid",
|
|
geo_ch->flags);
|
|
}
|
|
|
|
if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
|
|
priv->cfg->sku & IWL_SKU_A) {
|
|
printk(KERN_INFO DRV_NAME
|
|
": Incorrectly detected BG card as ABG. Please send "
|
|
"your PCI ID 0x%04X:0x%04X to maintainer.\n",
|
|
priv->pci_dev->device, priv->pci_dev->subsystem_device);
|
|
priv->cfg->sku &= ~IWL_SKU_A;
|
|
}
|
|
|
|
printk(KERN_INFO DRV_NAME
|
|
": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
|
|
priv->bands[IEEE80211_BAND_2GHZ].n_channels,
|
|
priv->bands[IEEE80211_BAND_5GHZ].n_channels);
|
|
|
|
if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
|
|
priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
|
|
&priv->bands[IEEE80211_BAND_2GHZ];
|
|
if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
|
|
priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
|
|
&priv->bands[IEEE80211_BAND_5GHZ];
|
|
|
|
set_bit(STATUS_GEO_CONFIGURED, &priv->status);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* iwl4965_free_geos - undo allocations in iwl4965_init_geos
|
|
*/
|
|
void iwl4965_free_geos(struct iwl_priv *priv)
|
|
{
|
|
kfree(priv->ieee_channels);
|
|
kfree(priv->ieee_rates);
|
|
clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* uCode download functions
|
|
*
|
|
******************************************************************************/
|
|
|
|
static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
|
|
{
|
|
iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
|
|
iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
|
|
iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
|
|
iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
|
|
iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
|
|
iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
|
|
}
|
|
|
|
/**
|
|
* iwl4965_verify_inst_full - verify runtime uCode image in card vs. host,
|
|
* looking at all data.
|
|
*/
|
|
static int iwl4965_verify_inst_full(struct iwl_priv *priv, __le32 *image,
|
|
u32 len)
|
|
{
|
|
u32 val;
|
|
u32 save_len = len;
|
|
int rc = 0;
|
|
u32 errcnt;
|
|
|
|
IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
|
|
|
|
rc = iwl_grab_nic_access(priv);
|
|
if (rc)
|
|
return rc;
|
|
|
|
iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
|
|
|
|
errcnt = 0;
|
|
for (; len > 0; len -= sizeof(u32), image++) {
|
|
/* read data comes through single port, auto-incr addr */
|
|
/* NOTE: Use the debugless read so we don't flood kernel log
|
|
* if IWL_DL_IO is set */
|
|
val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
|
|
if (val != le32_to_cpu(*image)) {
|
|
IWL_ERROR("uCode INST section is invalid at "
|
|
"offset 0x%x, is 0x%x, s/b 0x%x\n",
|
|
save_len - len, val, le32_to_cpu(*image));
|
|
rc = -EIO;
|
|
errcnt++;
|
|
if (errcnt >= 20)
|
|
break;
|
|
}
|
|
}
|
|
|
|
iwl_release_nic_access(priv);
|
|
|
|
if (!errcnt)
|
|
IWL_DEBUG_INFO
|
|
("ucode image in INSTRUCTION memory is good\n");
|
|
|
|
return rc;
|
|
}
|
|
|
|
|
|
/**
|
|
* iwl4965_verify_inst_sparse - verify runtime uCode image in card vs. host,
|
|
* using sample data 100 bytes apart. If these sample points are good,
|
|
* it's a pretty good bet that everything between them is good, too.
|
|
*/
|
|
static int iwl4965_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
|
|
{
|
|
u32 val;
|
|
int rc = 0;
|
|
u32 errcnt = 0;
|
|
u32 i;
|
|
|
|
IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
|
|
|
|
rc = iwl_grab_nic_access(priv);
|
|
if (rc)
|
|
return rc;
|
|
|
|
for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
|
|
/* read data comes through single port, auto-incr addr */
|
|
/* NOTE: Use the debugless read so we don't flood kernel log
|
|
* if IWL_DL_IO is set */
|
|
iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
|
|
i + RTC_INST_LOWER_BOUND);
|
|
val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
|
|
if (val != le32_to_cpu(*image)) {
|
|
#if 0 /* Enable this if you want to see details */
|
|
IWL_ERROR("uCode INST section is invalid at "
|
|
"offset 0x%x, is 0x%x, s/b 0x%x\n",
|
|
i, val, *image);
|
|
#endif
|
|
rc = -EIO;
|
|
errcnt++;
|
|
if (errcnt >= 3)
|
|
break;
|
|
}
|
|
}
|
|
|
|
iwl_release_nic_access(priv);
|
|
|
|
return rc;
|
|
}
|
|
|
|
|
|
/**
|
|
* iwl4965_verify_ucode - determine which instruction image is in SRAM,
|
|
* and verify its contents
|
|
*/
|
|
static int iwl4965_verify_ucode(struct iwl_priv *priv)
|
|
{
|
|
__le32 *image;
|
|
u32 len;
|
|
int rc = 0;
|
|
|
|
/* Try bootstrap */
|
|
image = (__le32 *)priv->ucode_boot.v_addr;
|
|
len = priv->ucode_boot.len;
|
|
rc = iwl4965_verify_inst_sparse(priv, image, len);
|
|
if (rc == 0) {
|
|
IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
|
|
return 0;
|
|
}
|
|
|
|
/* Try initialize */
|
|
image = (__le32 *)priv->ucode_init.v_addr;
|
|
len = priv->ucode_init.len;
|
|
rc = iwl4965_verify_inst_sparse(priv, image, len);
|
|
if (rc == 0) {
|
|
IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
|
|
return 0;
|
|
}
|
|
|
|
/* Try runtime/protocol */
|
|
image = (__le32 *)priv->ucode_code.v_addr;
|
|
len = priv->ucode_code.len;
|
|
rc = iwl4965_verify_inst_sparse(priv, image, len);
|
|
if (rc == 0) {
|
|
IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
|
|
return 0;
|
|
}
|
|
|
|
IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
|
|
|
|
/* Since nothing seems to match, show first several data entries in
|
|
* instruction SRAM, so maybe visual inspection will give a clue.
|
|
* Selection of bootstrap image (vs. other images) is arbitrary. */
|
|
image = (__le32 *)priv->ucode_boot.v_addr;
|
|
len = priv->ucode_boot.len;
|
|
rc = iwl4965_verify_inst_full(priv, image, len);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static void iwl4965_nic_start(struct iwl_priv *priv)
|
|
{
|
|
/* Remove all resets to allow NIC to operate */
|
|
iwl_write32(priv, CSR_RESET, 0);
|
|
}
|
|
|
|
|
|
/**
|
|
* iwl4965_read_ucode - Read uCode images from disk file.
|
|
*
|
|
* Copy into buffers for card to fetch via bus-mastering
|
|
*/
|
|
static int iwl4965_read_ucode(struct iwl_priv *priv)
|
|
{
|
|
struct iwl4965_ucode *ucode;
|
|
int ret;
|
|
const struct firmware *ucode_raw;
|
|
const char *name = priv->cfg->fw_name;
|
|
u8 *src;
|
|
size_t len;
|
|
u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
|
|
|
|
/* Ask kernel firmware_class module to get the boot firmware off disk.
|
|
* request_firmware() is synchronous, file is in memory on return. */
|
|
ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
|
|
if (ret < 0) {
|
|
IWL_ERROR("%s firmware file req failed: Reason %d\n",
|
|
name, ret);
|
|
goto error;
|
|
}
|
|
|
|
IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
|
|
name, ucode_raw->size);
|
|
|
|
/* Make sure that we got at least our header! */
|
|
if (ucode_raw->size < sizeof(*ucode)) {
|
|
IWL_ERROR("File size way too small!\n");
|
|
ret = -EINVAL;
|
|
goto err_release;
|
|
}
|
|
|
|
/* Data from ucode file: header followed by uCode images */
|
|
ucode = (void *)ucode_raw->data;
|
|
|
|
ver = le32_to_cpu(ucode->ver);
|
|
inst_size = le32_to_cpu(ucode->inst_size);
|
|
data_size = le32_to_cpu(ucode->data_size);
|
|
init_size = le32_to_cpu(ucode->init_size);
|
|
init_data_size = le32_to_cpu(ucode->init_data_size);
|
|
boot_size = le32_to_cpu(ucode->boot_size);
|
|
|
|
IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
|
|
IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
|
|
inst_size);
|
|
IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
|
|
data_size);
|
|
IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
|
|
init_size);
|
|
IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
|
|
init_data_size);
|
|
IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
|
|
boot_size);
|
|
|
|
/* Verify size of file vs. image size info in file's header */
|
|
if (ucode_raw->size < sizeof(*ucode) +
|
|
inst_size + data_size + init_size +
|
|
init_data_size + boot_size) {
|
|
|
|
IWL_DEBUG_INFO("uCode file size %d too small\n",
|
|
(int)ucode_raw->size);
|
|
ret = -EINVAL;
|
|
goto err_release;
|
|
}
|
|
|
|
/* Verify that uCode images will fit in card's SRAM */
|
|
if (inst_size > priv->hw_params.max_inst_size) {
|
|
IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
|
|
inst_size);
|
|
ret = -EINVAL;
|
|
goto err_release;
|
|
}
|
|
|
|
if (data_size > priv->hw_params.max_data_size) {
|
|
IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
|
|
data_size);
|
|
ret = -EINVAL;
|
|
goto err_release;
|
|
}
|
|
if (init_size > priv->hw_params.max_inst_size) {
|
|
IWL_DEBUG_INFO
|
|
("uCode init instr len %d too large to fit in\n",
|
|
init_size);
|
|
ret = -EINVAL;
|
|
goto err_release;
|
|
}
|
|
if (init_data_size > priv->hw_params.max_data_size) {
|
|
IWL_DEBUG_INFO
|
|
("uCode init data len %d too large to fit in\n",
|
|
init_data_size);
|
|
ret = -EINVAL;
|
|
goto err_release;
|
|
}
|
|
if (boot_size > priv->hw_params.max_bsm_size) {
|
|
IWL_DEBUG_INFO
|
|
("uCode boot instr len %d too large to fit in\n",
|
|
boot_size);
|
|
ret = -EINVAL;
|
|
goto err_release;
|
|
}
|
|
|
|
/* Allocate ucode buffers for card's bus-master loading ... */
|
|
|
|
/* Runtime instructions and 2 copies of data:
|
|
* 1) unmodified from disk
|
|
* 2) backup cache for save/restore during power-downs */
|
|
priv->ucode_code.len = inst_size;
|
|
iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
|
|
|
|
priv->ucode_data.len = data_size;
|
|
iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
|
|
|
|
priv->ucode_data_backup.len = data_size;
|
|
iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
|
|
|
|
/* Initialization instructions and data */
|
|
if (init_size && init_data_size) {
|
|
priv->ucode_init.len = init_size;
|
|
iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
|
|
|
|
priv->ucode_init_data.len = init_data_size;
|
|
iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
|
|
|
|
if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
|
|
goto err_pci_alloc;
|
|
}
|
|
|
|
/* Bootstrap (instructions only, no data) */
|
|
if (boot_size) {
|
|
priv->ucode_boot.len = boot_size;
|
|
iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
|
|
|
|
if (!priv->ucode_boot.v_addr)
|
|
goto err_pci_alloc;
|
|
}
|
|
|
|
/* Copy images into buffers for card's bus-master reads ... */
|
|
|
|
/* Runtime instructions (first block of data in file) */
|
|
src = &ucode->data[0];
|
|
len = priv->ucode_code.len;
|
|
IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
|
|
memcpy(priv->ucode_code.v_addr, src, len);
|
|
IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
|
|
priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
|
|
|
|
/* Runtime data (2nd block)
|
|
* NOTE: Copy into backup buffer will be done in iwl4965_up() */
|
|
src = &ucode->data[inst_size];
|
|
len = priv->ucode_data.len;
|
|
IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
|
|
memcpy(priv->ucode_data.v_addr, src, len);
|
|
memcpy(priv->ucode_data_backup.v_addr, src, len);
|
|
|
|
/* Initialization instructions (3rd block) */
|
|
if (init_size) {
|
|
src = &ucode->data[inst_size + data_size];
|
|
len = priv->ucode_init.len;
|
|
IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
|
|
len);
|
|
memcpy(priv->ucode_init.v_addr, src, len);
|
|
}
|
|
|
|
/* Initialization data (4th block) */
|
|
if (init_data_size) {
|
|
src = &ucode->data[inst_size + data_size + init_size];
|
|
len = priv->ucode_init_data.len;
|
|
IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
|
|
len);
|
|
memcpy(priv->ucode_init_data.v_addr, src, len);
|
|
}
|
|
|
|
/* Bootstrap instructions (5th block) */
|
|
src = &ucode->data[inst_size + data_size + init_size + init_data_size];
|
|
len = priv->ucode_boot.len;
|
|
IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
|
|
memcpy(priv->ucode_boot.v_addr, src, len);
|
|
|
|
/* We have our copies now, allow OS release its copies */
|
|
release_firmware(ucode_raw);
|
|
return 0;
|
|
|
|
err_pci_alloc:
|
|
IWL_ERROR("failed to allocate pci memory\n");
|
|
ret = -ENOMEM;
|
|
iwl4965_dealloc_ucode_pci(priv);
|
|
|
|
err_release:
|
|
release_firmware(ucode_raw);
|
|
|
|
error:
|
|
return ret;
|
|
}
|
|
|
|
|
|
/**
|
|
* iwl4965_set_ucode_ptrs - Set uCode address location
|
|
*
|
|
* Tell initialization uCode where to find runtime uCode.
|
|
*
|
|
* BSM registers initially contain pointers to initialization uCode.
|
|
* We need to replace them to load runtime uCode inst and data,
|
|
* and to save runtime data when powering down.
|
|
*/
|
|
static int iwl4965_set_ucode_ptrs(struct iwl_priv *priv)
|
|
{
|
|
dma_addr_t pinst;
|
|
dma_addr_t pdata;
|
|
int rc = 0;
|
|
unsigned long flags;
|
|
|
|
/* bits 35:4 for 4965 */
|
|
pinst = priv->ucode_code.p_addr >> 4;
|
|
pdata = priv->ucode_data_backup.p_addr >> 4;
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
rc = iwl_grab_nic_access(priv);
|
|
if (rc) {
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
return rc;
|
|
}
|
|
|
|
/* Tell bootstrap uCode where to find image to load */
|
|
iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
|
|
iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
|
|
iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
|
|
priv->ucode_data.len);
|
|
|
|
/* Inst bytecount must be last to set up, bit 31 signals uCode
|
|
* that all new ptr/size info is in place */
|
|
iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
|
|
priv->ucode_code.len | BSM_DRAM_INST_LOAD);
|
|
|
|
iwl_release_nic_access(priv);
|
|
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
|
|
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* iwl4965_init_alive_start - Called after REPLY_ALIVE notification received
|
|
*
|
|
* Called after REPLY_ALIVE notification received from "initialize" uCode.
|
|
*
|
|
* The 4965 "initialize" ALIVE reply contains calibration data for:
|
|
* Voltage, temperature, and MIMO tx gain correction, now stored in priv
|
|
* (3945 does not contain this data).
|
|
*
|
|
* Tell "initialize" uCode to go ahead and load the runtime uCode.
|
|
*/
|
|
static void iwl4965_init_alive_start(struct iwl_priv *priv)
|
|
{
|
|
/* Check alive response for "valid" sign from uCode */
|
|
if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
|
|
/* We had an error bringing up the hardware, so take it
|
|
* all the way back down so we can try again */
|
|
IWL_DEBUG_INFO("Initialize Alive failed.\n");
|
|
goto restart;
|
|
}
|
|
|
|
/* Bootstrap uCode has loaded initialize uCode ... verify inst image.
|
|
* This is a paranoid check, because we would not have gotten the
|
|
* "initialize" alive if code weren't properly loaded. */
|
|
if (iwl4965_verify_ucode(priv)) {
|
|
/* Runtime instruction load was bad;
|
|
* take it all the way back down so we can try again */
|
|
IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
|
|
goto restart;
|
|
}
|
|
|
|
/* Calculate temperature */
|
|
priv->temperature = iwl4965_get_temperature(priv);
|
|
|
|
/* Send pointers to protocol/runtime uCode image ... init code will
|
|
* load and launch runtime uCode, which will send us another "Alive"
|
|
* notification. */
|
|
IWL_DEBUG_INFO("Initialization Alive received.\n");
|
|
if (iwl4965_set_ucode_ptrs(priv)) {
|
|
/* Runtime instruction load won't happen;
|
|
* take it all the way back down so we can try again */
|
|
IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
|
|
goto restart;
|
|
}
|
|
return;
|
|
|
|
restart:
|
|
queue_work(priv->workqueue, &priv->restart);
|
|
}
|
|
|
|
|
|
/**
|
|
* iwl4965_alive_start - called after REPLY_ALIVE notification received
|
|
* from protocol/runtime uCode (initialization uCode's
|
|
* Alive gets handled by iwl4965_init_alive_start()).
|
|
*/
|
|
static void iwl4965_alive_start(struct iwl_priv *priv)
|
|
{
|
|
int ret = 0;
|
|
|
|
IWL_DEBUG_INFO("Runtime Alive received.\n");
|
|
|
|
if (priv->card_alive.is_valid != UCODE_VALID_OK) {
|
|
/* We had an error bringing up the hardware, so take it
|
|
* all the way back down so we can try again */
|
|
IWL_DEBUG_INFO("Alive failed.\n");
|
|
goto restart;
|
|
}
|
|
|
|
/* Initialize uCode has loaded Runtime uCode ... verify inst image.
|
|
* This is a paranoid check, because we would not have gotten the
|
|
* "runtime" alive if code weren't properly loaded. */
|
|
if (iwl4965_verify_ucode(priv)) {
|
|
/* Runtime instruction load was bad;
|
|
* take it all the way back down so we can try again */
|
|
IWL_DEBUG_INFO("Bad runtime uCode load.\n");
|
|
goto restart;
|
|
}
|
|
|
|
iwlcore_clear_stations_table(priv);
|
|
|
|
ret = priv->cfg->ops->lib->alive_notify(priv);
|
|
if (ret) {
|
|
IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
|
|
ret);
|
|
goto restart;
|
|
}
|
|
|
|
/* After the ALIVE response, we can send host commands to 4965 uCode */
|
|
set_bit(STATUS_ALIVE, &priv->status);
|
|
|
|
/* Clear out the uCode error bit if it is set */
|
|
clear_bit(STATUS_FW_ERROR, &priv->status);
|
|
|
|
if (iwl_is_rfkill(priv))
|
|
return;
|
|
|
|
ieee80211_start_queues(priv->hw);
|
|
|
|
priv->active_rate = priv->rates_mask;
|
|
priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
|
|
|
|
if (iwl_is_associated(priv)) {
|
|
struct iwl4965_rxon_cmd *active_rxon =
|
|
(struct iwl4965_rxon_cmd *)(&priv->active_rxon);
|
|
|
|
memcpy(&priv->staging_rxon, &priv->active_rxon,
|
|
sizeof(priv->staging_rxon));
|
|
active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
|
|
} else {
|
|
/* Initialize our rx_config data */
|
|
iwl4965_connection_init_rx_config(priv);
|
|
memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
|
|
}
|
|
|
|
/* Configure Bluetooth device coexistence support */
|
|
iwl4965_send_bt_config(priv);
|
|
|
|
/* Configure the adapter for unassociated operation */
|
|
iwl4965_commit_rxon(priv);
|
|
|
|
/* At this point, the NIC is initialized and operational */
|
|
priv->notif_missed_beacons = 0;
|
|
|
|
iwl4965_rf_kill_ct_config(priv);
|
|
|
|
iwl_leds_register(priv);
|
|
|
|
IWL_DEBUG_INFO("ALIVE processing complete.\n");
|
|
set_bit(STATUS_READY, &priv->status);
|
|
wake_up_interruptible(&priv->wait_command_queue);
|
|
|
|
if (priv->error_recovering)
|
|
iwl4965_error_recovery(priv);
|
|
|
|
iwlcore_low_level_notify(priv, IWLCORE_START_EVT);
|
|
ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
|
|
return;
|
|
|
|
restart:
|
|
queue_work(priv->workqueue, &priv->restart);
|
|
}
|
|
|
|
static void iwl4965_cancel_deferred_work(struct iwl_priv *priv);
|
|
|
|
static void __iwl4965_down(struct iwl_priv *priv)
|
|
{
|
|
unsigned long flags;
|
|
int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
|
|
struct ieee80211_conf *conf = NULL;
|
|
|
|
IWL_DEBUG_INFO(DRV_NAME " is going down\n");
|
|
|
|
conf = ieee80211_get_hw_conf(priv->hw);
|
|
|
|
if (!exit_pending)
|
|
set_bit(STATUS_EXIT_PENDING, &priv->status);
|
|
|
|
iwl_leds_unregister(priv);
|
|
|
|
iwlcore_low_level_notify(priv, IWLCORE_STOP_EVT);
|
|
|
|
iwlcore_clear_stations_table(priv);
|
|
|
|
/* Unblock any waiting calls */
|
|
wake_up_interruptible_all(&priv->wait_command_queue);
|
|
|
|
/* Wipe out the EXIT_PENDING status bit if we are not actually
|
|
* exiting the module */
|
|
if (!exit_pending)
|
|
clear_bit(STATUS_EXIT_PENDING, &priv->status);
|
|
|
|
/* stop and reset the on-board processor */
|
|
iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
|
|
|
|
/* tell the device to stop sending interrupts */
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
iwl4965_disable_interrupts(priv);
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
iwl_synchronize_irq(priv);
|
|
|
|
if (priv->mac80211_registered)
|
|
ieee80211_stop_queues(priv->hw);
|
|
|
|
/* If we have not previously called iwl4965_init() then
|
|
* clear all bits but the RF Kill and SUSPEND bits and return */
|
|
if (!iwl_is_init(priv)) {
|
|
priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
|
|
STATUS_RF_KILL_HW |
|
|
test_bit(STATUS_RF_KILL_SW, &priv->status) <<
|
|
STATUS_RF_KILL_SW |
|
|
test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
|
|
STATUS_GEO_CONFIGURED |
|
|
test_bit(STATUS_IN_SUSPEND, &priv->status) <<
|
|
STATUS_IN_SUSPEND;
|
|
goto exit;
|
|
}
|
|
|
|
/* ...otherwise clear out all the status bits but the RF Kill and
|
|
* SUSPEND bits and continue taking the NIC down. */
|
|
priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
|
|
STATUS_RF_KILL_HW |
|
|
test_bit(STATUS_RF_KILL_SW, &priv->status) <<
|
|
STATUS_RF_KILL_SW |
|
|
test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
|
|
STATUS_GEO_CONFIGURED |
|
|
test_bit(STATUS_IN_SUSPEND, &priv->status) <<
|
|
STATUS_IN_SUSPEND |
|
|
test_bit(STATUS_FW_ERROR, &priv->status) <<
|
|
STATUS_FW_ERROR;
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
iwl_clear_bit(priv, CSR_GP_CNTRL,
|
|
CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
iwl4965_hw_txq_ctx_stop(priv);
|
|
iwl4965_hw_rxq_stop(priv);
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
if (!iwl_grab_nic_access(priv)) {
|
|
iwl_write_prph(priv, APMG_CLK_DIS_REG,
|
|
APMG_CLK_VAL_DMA_CLK_RQT);
|
|
iwl_release_nic_access(priv);
|
|
}
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
udelay(5);
|
|
|
|
iwl4965_hw_nic_stop_master(priv);
|
|
iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
|
|
iwl4965_hw_nic_reset(priv);
|
|
|
|
exit:
|
|
memset(&priv->card_alive, 0, sizeof(struct iwl4965_alive_resp));
|
|
|
|
if (priv->ibss_beacon)
|
|
dev_kfree_skb(priv->ibss_beacon);
|
|
priv->ibss_beacon = NULL;
|
|
|
|
/* clear out any free frames */
|
|
iwl4965_clear_free_frames(priv);
|
|
}
|
|
|
|
static void iwl4965_down(struct iwl_priv *priv)
|
|
{
|
|
mutex_lock(&priv->mutex);
|
|
__iwl4965_down(priv);
|
|
mutex_unlock(&priv->mutex);
|
|
|
|
iwl4965_cancel_deferred_work(priv);
|
|
}
|
|
|
|
#define MAX_HW_RESTARTS 5
|
|
|
|
static int __iwl4965_up(struct iwl_priv *priv)
|
|
{
|
|
int i;
|
|
int ret;
|
|
|
|
if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
|
|
IWL_WARNING("Exit pending; will not bring the NIC up\n");
|
|
return -EIO;
|
|
}
|
|
|
|
if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
|
|
IWL_WARNING("Radio disabled by SW RF kill (module "
|
|
"parameter)\n");
|
|
iwl_rfkill_set_hw_state(priv);
|
|
return -ENODEV;
|
|
}
|
|
|
|
if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
|
|
IWL_ERROR("ucode not available for device bringup\n");
|
|
return -EIO;
|
|
}
|
|
|
|
/* If platform's RF_KILL switch is NOT set to KILL */
|
|
if (iwl_read32(priv, CSR_GP_CNTRL) &
|
|
CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
|
|
clear_bit(STATUS_RF_KILL_HW, &priv->status);
|
|
else {
|
|
set_bit(STATUS_RF_KILL_HW, &priv->status);
|
|
if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
|
|
iwl_rfkill_set_hw_state(priv);
|
|
IWL_WARNING("Radio disabled by HW RF Kill switch\n");
|
|
return -ENODEV;
|
|
}
|
|
}
|
|
|
|
iwl_rfkill_set_hw_state(priv);
|
|
iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
|
|
|
|
ret = priv->cfg->ops->lib->hw_nic_init(priv);
|
|
if (ret) {
|
|
IWL_ERROR("Unable to init nic\n");
|
|
return ret;
|
|
}
|
|
|
|
/* make sure rfkill handshake bits are cleared */
|
|
iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
|
|
iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
|
|
CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
|
|
|
|
/* clear (again), then enable host interrupts */
|
|
iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
|
|
iwl4965_enable_interrupts(priv);
|
|
|
|
/* really make sure rfkill handshake bits are cleared */
|
|
iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
|
|
iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
|
|
|
|
/* Copy original ucode data image from disk into backup cache.
|
|
* This will be used to initialize the on-board processor's
|
|
* data SRAM for a clean start when the runtime program first loads. */
|
|
memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
|
|
priv->ucode_data.len);
|
|
|
|
/* We return success when we resume from suspend and rf_kill is on. */
|
|
if (test_bit(STATUS_RF_KILL_HW, &priv->status))
|
|
return 0;
|
|
|
|
for (i = 0; i < MAX_HW_RESTARTS; i++) {
|
|
|
|
iwlcore_clear_stations_table(priv);
|
|
|
|
/* load bootstrap state machine,
|
|
* load bootstrap program into processor's memory,
|
|
* prepare to load the "initialize" uCode */
|
|
ret = priv->cfg->ops->lib->load_ucode(priv);
|
|
|
|
if (ret) {
|
|
IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
|
|
continue;
|
|
}
|
|
|
|
/* start card; "initialize" will load runtime ucode */
|
|
iwl4965_nic_start(priv);
|
|
|
|
IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
set_bit(STATUS_EXIT_PENDING, &priv->status);
|
|
__iwl4965_down(priv);
|
|
|
|
/* tried to restart and config the device for as long as our
|
|
* patience could withstand */
|
|
IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
|
|
return -EIO;
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* Workqueue callbacks
|
|
*
|
|
*****************************************************************************/
|
|
|
|
static void iwl4965_bg_init_alive_start(struct work_struct *data)
|
|
{
|
|
struct iwl_priv *priv =
|
|
container_of(data, struct iwl_priv, init_alive_start.work);
|
|
|
|
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
|
|
return;
|
|
|
|
mutex_lock(&priv->mutex);
|
|
iwl4965_init_alive_start(priv);
|
|
mutex_unlock(&priv->mutex);
|
|
}
|
|
|
|
static void iwl4965_bg_alive_start(struct work_struct *data)
|
|
{
|
|
struct iwl_priv *priv =
|
|
container_of(data, struct iwl_priv, alive_start.work);
|
|
|
|
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
|
|
return;
|
|
|
|
mutex_lock(&priv->mutex);
|
|
iwl4965_alive_start(priv);
|
|
mutex_unlock(&priv->mutex);
|
|
}
|
|
|
|
static void iwl4965_bg_rf_kill(struct work_struct *work)
|
|
{
|
|
struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
|
|
|
|
wake_up_interruptible(&priv->wait_command_queue);
|
|
|
|
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
|
|
return;
|
|
|
|
mutex_lock(&priv->mutex);
|
|
|
|
if (!iwl_is_rfkill(priv)) {
|
|
IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
|
|
"HW and/or SW RF Kill no longer active, restarting "
|
|
"device\n");
|
|
if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
|
|
queue_work(priv->workqueue, &priv->restart);
|
|
} else {
|
|
/* make sure mac80211 stop sending Tx frame */
|
|
if (priv->mac80211_registered)
|
|
ieee80211_stop_queues(priv->hw);
|
|
|
|
if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
|
|
IWL_DEBUG_RF_KILL("Can not turn radio back on - "
|
|
"disabled by SW switch\n");
|
|
else
|
|
IWL_WARNING("Radio Frequency Kill Switch is On:\n"
|
|
"Kill switch must be turned off for "
|
|
"wireless networking to work.\n");
|
|
}
|
|
iwl_rfkill_set_hw_state(priv);
|
|
|
|
mutex_unlock(&priv->mutex);
|
|
}
|
|
|
|
#define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
|
|
|
|
static void iwl4965_bg_scan_check(struct work_struct *data)
|
|
{
|
|
struct iwl_priv *priv =
|
|
container_of(data, struct iwl_priv, scan_check.work);
|
|
|
|
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
|
|
return;
|
|
|
|
mutex_lock(&priv->mutex);
|
|
if (test_bit(STATUS_SCANNING, &priv->status) ||
|
|
test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
|
|
IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
|
|
"Scan completion watchdog resetting adapter (%dms)\n",
|
|
jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
|
|
|
|
if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
|
|
iwl4965_send_scan_abort(priv);
|
|
}
|
|
mutex_unlock(&priv->mutex);
|
|
}
|
|
|
|
static void iwl4965_bg_request_scan(struct work_struct *data)
|
|
{
|
|
struct iwl_priv *priv =
|
|
container_of(data, struct iwl_priv, request_scan);
|
|
struct iwl_host_cmd cmd = {
|
|
.id = REPLY_SCAN_CMD,
|
|
.len = sizeof(struct iwl4965_scan_cmd),
|
|
.meta.flags = CMD_SIZE_HUGE,
|
|
};
|
|
struct iwl4965_scan_cmd *scan;
|
|
struct ieee80211_conf *conf = NULL;
|
|
u16 cmd_len;
|
|
enum ieee80211_band band;
|
|
u8 direct_mask;
|
|
int ret = 0;
|
|
|
|
conf = ieee80211_get_hw_conf(priv->hw);
|
|
|
|
mutex_lock(&priv->mutex);
|
|
|
|
if (!iwl_is_ready(priv)) {
|
|
IWL_WARNING("request scan called when driver not ready.\n");
|
|
goto done;
|
|
}
|
|
|
|
/* Make sure the scan wasn't cancelled before this queued work
|
|
* was given the chance to run... */
|
|
if (!test_bit(STATUS_SCANNING, &priv->status))
|
|
goto done;
|
|
|
|
/* This should never be called or scheduled if there is currently
|
|
* a scan active in the hardware. */
|
|
if (test_bit(STATUS_SCAN_HW, &priv->status)) {
|
|
IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
|
|
"Ignoring second request.\n");
|
|
ret = -EIO;
|
|
goto done;
|
|
}
|
|
|
|
if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
|
|
IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
|
|
goto done;
|
|
}
|
|
|
|
if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
|
|
IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n");
|
|
goto done;
|
|
}
|
|
|
|
if (iwl_is_rfkill(priv)) {
|
|
IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
|
|
goto done;
|
|
}
|
|
|
|
if (!test_bit(STATUS_READY, &priv->status)) {
|
|
IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n");
|
|
goto done;
|
|
}
|
|
|
|
if (!priv->scan_bands) {
|
|
IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
|
|
goto done;
|
|
}
|
|
|
|
if (!priv->scan) {
|
|
priv->scan = kmalloc(sizeof(struct iwl4965_scan_cmd) +
|
|
IWL_MAX_SCAN_SIZE, GFP_KERNEL);
|
|
if (!priv->scan) {
|
|
ret = -ENOMEM;
|
|
goto done;
|
|
}
|
|
}
|
|
scan = priv->scan;
|
|
memset(scan, 0, sizeof(struct iwl4965_scan_cmd) + IWL_MAX_SCAN_SIZE);
|
|
|
|
scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
|
|
scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
|
|
|
|
if (iwl_is_associated(priv)) {
|
|
u16 interval = 0;
|
|
u32 extra;
|
|
u32 suspend_time = 100;
|
|
u32 scan_suspend_time = 100;
|
|
unsigned long flags;
|
|
|
|
IWL_DEBUG_INFO("Scanning while associated...\n");
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
interval = priv->beacon_int;
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
scan->suspend_time = 0;
|
|
scan->max_out_time = cpu_to_le32(200 * 1024);
|
|
if (!interval)
|
|
interval = suspend_time;
|
|
|
|
extra = (suspend_time / interval) << 22;
|
|
scan_suspend_time = (extra |
|
|
((suspend_time % interval) * 1024));
|
|
scan->suspend_time = cpu_to_le32(scan_suspend_time);
|
|
IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
|
|
scan_suspend_time, interval);
|
|
}
|
|
|
|
/* We should add the ability for user to lock to PASSIVE ONLY */
|
|
if (priv->one_direct_scan) {
|
|
IWL_DEBUG_SCAN
|
|
("Kicking off one direct scan for '%s'\n",
|
|
iwl4965_escape_essid(priv->direct_ssid,
|
|
priv->direct_ssid_len));
|
|
scan->direct_scan[0].id = WLAN_EID_SSID;
|
|
scan->direct_scan[0].len = priv->direct_ssid_len;
|
|
memcpy(scan->direct_scan[0].ssid,
|
|
priv->direct_ssid, priv->direct_ssid_len);
|
|
direct_mask = 1;
|
|
} else if (!iwl_is_associated(priv) && priv->essid_len) {
|
|
IWL_DEBUG_SCAN
|
|
("Kicking off one direct scan for '%s' when not associated\n",
|
|
iwl4965_escape_essid(priv->essid, priv->essid_len));
|
|
scan->direct_scan[0].id = WLAN_EID_SSID;
|
|
scan->direct_scan[0].len = priv->essid_len;
|
|
memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
|
|
direct_mask = 1;
|
|
} else {
|
|
IWL_DEBUG_SCAN("Kicking off one indirect scan.\n");
|
|
direct_mask = 0;
|
|
}
|
|
|
|
scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
|
|
scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
|
|
scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
|
|
|
|
|
|
switch (priv->scan_bands) {
|
|
case 2:
|
|
scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
|
|
scan->tx_cmd.rate_n_flags =
|
|
iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
|
|
RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
|
|
|
|
scan->good_CRC_th = 0;
|
|
band = IEEE80211_BAND_2GHZ;
|
|
break;
|
|
|
|
case 1:
|
|
scan->tx_cmd.rate_n_flags =
|
|
iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
|
|
RATE_MCS_ANT_B_MSK);
|
|
scan->good_CRC_th = IWL_GOOD_CRC_TH;
|
|
band = IEEE80211_BAND_5GHZ;
|
|
break;
|
|
|
|
default:
|
|
IWL_WARNING("Invalid scan band count\n");
|
|
goto done;
|
|
}
|
|
|
|
/* We don't build a direct scan probe request; the uCode will do
|
|
* that based on the direct_mask added to each channel entry */
|
|
cmd_len = iwl4965_fill_probe_req(priv, band,
|
|
(struct ieee80211_mgmt *)scan->data,
|
|
IWL_MAX_SCAN_SIZE - sizeof(*scan), 0);
|
|
|
|
scan->tx_cmd.len = cpu_to_le16(cmd_len);
|
|
/* select Rx chains */
|
|
|
|
/* Force use of chains B and C (0x6) for scan Rx.
|
|
* Avoid A (0x1) because of its off-channel reception on A-band.
|
|
* MIMO is not used here, but value is required to make uCode happy. */
|
|
scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
|
|
cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
|
|
(0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
|
|
(0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
|
|
|
|
if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
|
|
scan->filter_flags = RXON_FILTER_PROMISC_MSK;
|
|
|
|
if (direct_mask)
|
|
scan->channel_count =
|
|
iwl4965_get_channels_for_scan(
|
|
priv, band, 1, /* active */
|
|
direct_mask,
|
|
(void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
|
|
else
|
|
scan->channel_count =
|
|
iwl4965_get_channels_for_scan(
|
|
priv, band, 0, /* passive */
|
|
direct_mask,
|
|
(void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
|
|
|
|
scan->filter_flags |= (RXON_FILTER_ACCEPT_GRP_MSK |
|
|
RXON_FILTER_BCON_AWARE_MSK);
|
|
cmd.len += le16_to_cpu(scan->tx_cmd.len) +
|
|
scan->channel_count * sizeof(struct iwl4965_scan_channel);
|
|
cmd.data = scan;
|
|
scan->len = cpu_to_le16(cmd.len);
|
|
|
|
set_bit(STATUS_SCAN_HW, &priv->status);
|
|
ret = iwl_send_cmd_sync(priv, &cmd);
|
|
if (ret)
|
|
goto done;
|
|
|
|
queue_delayed_work(priv->workqueue, &priv->scan_check,
|
|
IWL_SCAN_CHECK_WATCHDOG);
|
|
|
|
mutex_unlock(&priv->mutex);
|
|
return;
|
|
|
|
done:
|
|
/* inform mac80211 scan aborted */
|
|
queue_work(priv->workqueue, &priv->scan_completed);
|
|
mutex_unlock(&priv->mutex);
|
|
}
|
|
|
|
static void iwl4965_bg_up(struct work_struct *data)
|
|
{
|
|
struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
|
|
|
|
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
|
|
return;
|
|
|
|
mutex_lock(&priv->mutex);
|
|
__iwl4965_up(priv);
|
|
mutex_unlock(&priv->mutex);
|
|
}
|
|
|
|
static void iwl4965_bg_restart(struct work_struct *data)
|
|
{
|
|
struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
|
|
|
|
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
|
|
return;
|
|
|
|
iwl4965_down(priv);
|
|
queue_work(priv->workqueue, &priv->up);
|
|
}
|
|
|
|
static void iwl4965_bg_rx_replenish(struct work_struct *data)
|
|
{
|
|
struct iwl_priv *priv =
|
|
container_of(data, struct iwl_priv, rx_replenish);
|
|
|
|
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
|
|
return;
|
|
|
|
mutex_lock(&priv->mutex);
|
|
iwl4965_rx_replenish(priv);
|
|
mutex_unlock(&priv->mutex);
|
|
}
|
|
|
|
#define IWL_DELAY_NEXT_SCAN (HZ*2)
|
|
|
|
static void iwl4965_post_associate(struct iwl_priv *priv)
|
|
{
|
|
struct ieee80211_conf *conf = NULL;
|
|
int ret = 0;
|
|
DECLARE_MAC_BUF(mac);
|
|
|
|
if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
|
|
IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
|
|
return;
|
|
}
|
|
|
|
IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
|
|
priv->assoc_id,
|
|
print_mac(mac, priv->active_rxon.bssid_addr));
|
|
|
|
|
|
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
|
|
return;
|
|
|
|
|
|
if (!priv->vif || !priv->is_open)
|
|
return;
|
|
|
|
iwl4965_scan_cancel_timeout(priv, 200);
|
|
|
|
conf = ieee80211_get_hw_conf(priv->hw);
|
|
|
|
priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
|
|
iwl4965_commit_rxon(priv);
|
|
|
|
memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
|
|
iwl4965_setup_rxon_timing(priv);
|
|
ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
|
|
sizeof(priv->rxon_timing), &priv->rxon_timing);
|
|
if (ret)
|
|
IWL_WARNING("REPLY_RXON_TIMING failed - "
|
|
"Attempting to continue.\n");
|
|
|
|
priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
|
|
|
|
#ifdef CONFIG_IWL4965_HT
|
|
if (priv->current_ht_config.is_ht)
|
|
iwl4965_set_rxon_ht(priv, &priv->current_ht_config);
|
|
#endif /* CONFIG_IWL4965_HT*/
|
|
iwl4965_set_rxon_chain(priv);
|
|
priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
|
|
|
|
IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
|
|
priv->assoc_id, priv->beacon_int);
|
|
|
|
if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
|
|
priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
|
|
else
|
|
priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
|
|
|
|
if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
|
|
if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
|
|
priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
|
|
else
|
|
priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
|
|
|
|
if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
|
|
priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
|
|
|
|
}
|
|
|
|
iwl4965_commit_rxon(priv);
|
|
|
|
switch (priv->iw_mode) {
|
|
case IEEE80211_IF_TYPE_STA:
|
|
iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
|
|
break;
|
|
|
|
case IEEE80211_IF_TYPE_IBSS:
|
|
|
|
/* clear out the station table */
|
|
iwlcore_clear_stations_table(priv);
|
|
|
|
iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
|
|
iwl4965_rxon_add_station(priv, priv->bssid, 0);
|
|
iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
|
|
iwl4965_send_beacon_cmd(priv);
|
|
|
|
break;
|
|
|
|
default:
|
|
IWL_ERROR("%s Should not be called in %d mode\n",
|
|
__FUNCTION__, priv->iw_mode);
|
|
break;
|
|
}
|
|
|
|
iwl4965_sequence_reset(priv);
|
|
|
|
/* Enable Rx differential gain and sensitivity calibrations */
|
|
iwl_chain_noise_reset(priv);
|
|
priv->start_calib = 1;
|
|
|
|
if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
|
|
priv->assoc_station_added = 1;
|
|
|
|
iwl4965_activate_qos(priv, 0);
|
|
|
|
iwl_power_update_mode(priv, 0);
|
|
/* we have just associated, don't start scan too early */
|
|
priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
|
|
}
|
|
|
|
|
|
static void iwl4965_bg_post_associate(struct work_struct *data)
|
|
{
|
|
struct iwl_priv *priv = container_of(data, struct iwl_priv,
|
|
post_associate.work);
|
|
|
|
mutex_lock(&priv->mutex);
|
|
iwl4965_post_associate(priv);
|
|
mutex_unlock(&priv->mutex);
|
|
|
|
}
|
|
|
|
static void iwl4965_bg_abort_scan(struct work_struct *work)
|
|
{
|
|
struct iwl_priv *priv = container_of(work, struct iwl_priv, abort_scan);
|
|
|
|
if (!iwl_is_ready(priv))
|
|
return;
|
|
|
|
mutex_lock(&priv->mutex);
|
|
|
|
set_bit(STATUS_SCAN_ABORTING, &priv->status);
|
|
iwl4965_send_scan_abort(priv);
|
|
|
|
mutex_unlock(&priv->mutex);
|
|
}
|
|
|
|
static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
|
|
|
|
static void iwl4965_bg_scan_completed(struct work_struct *work)
|
|
{
|
|
struct iwl_priv *priv =
|
|
container_of(work, struct iwl_priv, scan_completed);
|
|
|
|
IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
|
|
|
|
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
|
|
return;
|
|
|
|
if (test_bit(STATUS_CONF_PENDING, &priv->status))
|
|
iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
|
|
|
|
ieee80211_scan_completed(priv->hw);
|
|
|
|
/* Since setting the TXPOWER may have been deferred while
|
|
* performing the scan, fire one off */
|
|
mutex_lock(&priv->mutex);
|
|
iwl4965_hw_reg_send_txpower(priv);
|
|
mutex_unlock(&priv->mutex);
|
|
}
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* mac80211 entry point functions
|
|
*
|
|
*****************************************************************************/
|
|
|
|
#define UCODE_READY_TIMEOUT (2 * HZ)
|
|
|
|
static int iwl4965_mac_start(struct ieee80211_hw *hw)
|
|
{
|
|
struct iwl_priv *priv = hw->priv;
|
|
int ret;
|
|
|
|
IWL_DEBUG_MAC80211("enter\n");
|
|
|
|
if (pci_enable_device(priv->pci_dev)) {
|
|
IWL_ERROR("Fail to pci_enable_device\n");
|
|
return -ENODEV;
|
|
}
|
|
pci_restore_state(priv->pci_dev);
|
|
pci_enable_msi(priv->pci_dev);
|
|
|
|
ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
|
|
DRV_NAME, priv);
|
|
if (ret) {
|
|
IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
|
|
goto out_disable_msi;
|
|
}
|
|
|
|
/* we should be verifying the device is ready to be opened */
|
|
mutex_lock(&priv->mutex);
|
|
|
|
memset(&priv->staging_rxon, 0, sizeof(struct iwl4965_rxon_cmd));
|
|
/* fetch ucode file from disk, alloc and copy to bus-master buffers ...
|
|
* ucode filename and max sizes are card-specific. */
|
|
|
|
if (!priv->ucode_code.len) {
|
|
ret = iwl4965_read_ucode(priv);
|
|
if (ret) {
|
|
IWL_ERROR("Could not read microcode: %d\n", ret);
|
|
mutex_unlock(&priv->mutex);
|
|
goto out_release_irq;
|
|
}
|
|
}
|
|
|
|
ret = __iwl4965_up(priv);
|
|
|
|
mutex_unlock(&priv->mutex);
|
|
|
|
if (ret)
|
|
goto out_release_irq;
|
|
|
|
IWL_DEBUG_INFO("Start UP work done.\n");
|
|
|
|
if (test_bit(STATUS_IN_SUSPEND, &priv->status))
|
|
return 0;
|
|
|
|
/* Wait for START_ALIVE from ucode. Otherwise callbacks from
|
|
* mac80211 will not be run successfully. */
|
|
ret = wait_event_interruptible_timeout(priv->wait_command_queue,
|
|
test_bit(STATUS_READY, &priv->status),
|
|
UCODE_READY_TIMEOUT);
|
|
if (!ret) {
|
|
if (!test_bit(STATUS_READY, &priv->status)) {
|
|
IWL_ERROR("Wait for START_ALIVE timeout after %dms.\n",
|
|
jiffies_to_msecs(UCODE_READY_TIMEOUT));
|
|
ret = -ETIMEDOUT;
|
|
goto out_release_irq;
|
|
}
|
|
}
|
|
|
|
priv->is_open = 1;
|
|
IWL_DEBUG_MAC80211("leave\n");
|
|
return 0;
|
|
|
|
out_release_irq:
|
|
free_irq(priv->pci_dev->irq, priv);
|
|
out_disable_msi:
|
|
pci_disable_msi(priv->pci_dev);
|
|
pci_disable_device(priv->pci_dev);
|
|
priv->is_open = 0;
|
|
IWL_DEBUG_MAC80211("leave - failed\n");
|
|
return ret;
|
|
}
|
|
|
|
static void iwl4965_mac_stop(struct ieee80211_hw *hw)
|
|
{
|
|
struct iwl_priv *priv = hw->priv;
|
|
|
|
IWL_DEBUG_MAC80211("enter\n");
|
|
|
|
if (!priv->is_open) {
|
|
IWL_DEBUG_MAC80211("leave - skip\n");
|
|
return;
|
|
}
|
|
|
|
priv->is_open = 0;
|
|
|
|
if (iwl_is_ready_rf(priv)) {
|
|
/* stop mac, cancel any scan request and clear
|
|
* RXON_FILTER_ASSOC_MSK BIT
|
|
*/
|
|
mutex_lock(&priv->mutex);
|
|
iwl4965_scan_cancel_timeout(priv, 100);
|
|
cancel_delayed_work(&priv->post_associate);
|
|
mutex_unlock(&priv->mutex);
|
|
}
|
|
|
|
iwl4965_down(priv);
|
|
|
|
flush_workqueue(priv->workqueue);
|
|
free_irq(priv->pci_dev->irq, priv);
|
|
pci_disable_msi(priv->pci_dev);
|
|
pci_save_state(priv->pci_dev);
|
|
pci_disable_device(priv->pci_dev);
|
|
|
|
IWL_DEBUG_MAC80211("leave\n");
|
|
}
|
|
|
|
static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
|
|
struct ieee80211_tx_control *ctl)
|
|
{
|
|
struct iwl_priv *priv = hw->priv;
|
|
|
|
IWL_DEBUG_MAC80211("enter\n");
|
|
|
|
if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
|
|
IWL_DEBUG_MAC80211("leave - monitor\n");
|
|
return -1;
|
|
}
|
|
|
|
IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
|
|
ctl->tx_rate->bitrate);
|
|
|
|
if (iwl4965_tx_skb(priv, skb, ctl))
|
|
dev_kfree_skb_any(skb);
|
|
|
|
IWL_DEBUG_MAC80211("leave\n");
|
|
return 0;
|
|
}
|
|
|
|
static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
|
|
struct ieee80211_if_init_conf *conf)
|
|
{
|
|
struct iwl_priv *priv = hw->priv;
|
|
unsigned long flags;
|
|
DECLARE_MAC_BUF(mac);
|
|
|
|
IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
|
|
|
|
if (priv->vif) {
|
|
IWL_DEBUG_MAC80211("leave - vif != NULL\n");
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
priv->vif = conf->vif;
|
|
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
mutex_lock(&priv->mutex);
|
|
|
|
if (conf->mac_addr) {
|
|
IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
|
|
memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
|
|
}
|
|
|
|
if (iwl_is_ready(priv))
|
|
iwl4965_set_mode(priv, conf->type);
|
|
|
|
mutex_unlock(&priv->mutex);
|
|
|
|
IWL_DEBUG_MAC80211("leave\n");
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* iwl4965_mac_config - mac80211 config callback
|
|
*
|
|
* We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
|
|
* be set inappropriately and the driver currently sets the hardware up to
|
|
* use it whenever needed.
|
|
*/
|
|
static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
|
|
{
|
|
struct iwl_priv *priv = hw->priv;
|
|
const struct iwl_channel_info *ch_info;
|
|
unsigned long flags;
|
|
int ret = 0;
|
|
|
|
mutex_lock(&priv->mutex);
|
|
IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
|
|
|
|
priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
|
|
|
|
if (!iwl_is_ready(priv)) {
|
|
IWL_DEBUG_MAC80211("leave - not ready\n");
|
|
ret = -EIO;
|
|
goto out;
|
|
}
|
|
|
|
if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
|
|
test_bit(STATUS_SCANNING, &priv->status))) {
|
|
IWL_DEBUG_MAC80211("leave - scanning\n");
|
|
set_bit(STATUS_CONF_PENDING, &priv->status);
|
|
mutex_unlock(&priv->mutex);
|
|
return 0;
|
|
}
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
|
|
ch_info = iwl_get_channel_info(priv, conf->channel->band,
|
|
ieee80211_frequency_to_channel(conf->channel->center_freq));
|
|
if (!is_channel_valid(ch_info)) {
|
|
IWL_DEBUG_MAC80211("leave - invalid channel\n");
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
#ifdef CONFIG_IWL4965_HT
|
|
/* if we are switching from ht to 2.4 clear flags
|
|
* from any ht related info since 2.4 does not
|
|
* support ht */
|
|
if ((le16_to_cpu(priv->staging_rxon.channel) != conf->channel->hw_value)
|
|
#ifdef IEEE80211_CONF_CHANNEL_SWITCH
|
|
&& !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
|
|
#endif
|
|
)
|
|
priv->staging_rxon.flags = 0;
|
|
#endif /* CONFIG_IWL4965_HT */
|
|
|
|
iwlcore_set_rxon_channel(priv, conf->channel->band,
|
|
ieee80211_frequency_to_channel(conf->channel->center_freq));
|
|
|
|
iwl4965_set_flags_for_phymode(priv, conf->channel->band);
|
|
|
|
/* The list of supported rates and rate mask can be different
|
|
* for each band; since the band may have changed, reset
|
|
* the rate mask to what mac80211 lists */
|
|
iwl4965_set_rate(priv);
|
|
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
#ifdef IEEE80211_CONF_CHANNEL_SWITCH
|
|
if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
|
|
iwl4965_hw_channel_switch(priv, conf->channel);
|
|
goto out;
|
|
}
|
|
#endif
|
|
|
|
if (priv->cfg->ops->lib->radio_kill_sw)
|
|
priv->cfg->ops->lib->radio_kill_sw(priv, !conf->radio_enabled);
|
|
|
|
if (!conf->radio_enabled) {
|
|
IWL_DEBUG_MAC80211("leave - radio disabled\n");
|
|
goto out;
|
|
}
|
|
|
|
if (iwl_is_rfkill(priv)) {
|
|
IWL_DEBUG_MAC80211("leave - RF kill\n");
|
|
ret = -EIO;
|
|
goto out;
|
|
}
|
|
|
|
iwl4965_set_rate(priv);
|
|
|
|
if (memcmp(&priv->active_rxon,
|
|
&priv->staging_rxon, sizeof(priv->staging_rxon)))
|
|
iwl4965_commit_rxon(priv);
|
|
else
|
|
IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
|
|
|
|
IWL_DEBUG_MAC80211("leave\n");
|
|
|
|
out:
|
|
clear_bit(STATUS_CONF_PENDING, &priv->status);
|
|
mutex_unlock(&priv->mutex);
|
|
return ret;
|
|
}
|
|
|
|
static void iwl4965_config_ap(struct iwl_priv *priv)
|
|
{
|
|
int ret = 0;
|
|
|
|
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
|
|
return;
|
|
|
|
/* The following should be done only at AP bring up */
|
|
if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
|
|
|
|
/* RXON - unassoc (to set timing command) */
|
|
priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
|
|
iwl4965_commit_rxon(priv);
|
|
|
|
/* RXON Timing */
|
|
memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
|
|
iwl4965_setup_rxon_timing(priv);
|
|
ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
|
|
sizeof(priv->rxon_timing), &priv->rxon_timing);
|
|
if (ret)
|
|
IWL_WARNING("REPLY_RXON_TIMING failed - "
|
|
"Attempting to continue.\n");
|
|
|
|
iwl4965_set_rxon_chain(priv);
|
|
|
|
/* FIXME: what should be the assoc_id for AP? */
|
|
priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
|
|
if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
|
|
priv->staging_rxon.flags |=
|
|
RXON_FLG_SHORT_PREAMBLE_MSK;
|
|
else
|
|
priv->staging_rxon.flags &=
|
|
~RXON_FLG_SHORT_PREAMBLE_MSK;
|
|
|
|
if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
|
|
if (priv->assoc_capability &
|
|
WLAN_CAPABILITY_SHORT_SLOT_TIME)
|
|
priv->staging_rxon.flags |=
|
|
RXON_FLG_SHORT_SLOT_MSK;
|
|
else
|
|
priv->staging_rxon.flags &=
|
|
~RXON_FLG_SHORT_SLOT_MSK;
|
|
|
|
if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
|
|
priv->staging_rxon.flags &=
|
|
~RXON_FLG_SHORT_SLOT_MSK;
|
|
}
|
|
/* restore RXON assoc */
|
|
priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
|
|
iwl4965_commit_rxon(priv);
|
|
iwl4965_activate_qos(priv, 1);
|
|
iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
|
|
}
|
|
iwl4965_send_beacon_cmd(priv);
|
|
|
|
/* FIXME - we need to add code here to detect a totally new
|
|
* configuration, reset the AP, unassoc, rxon timing, assoc,
|
|
* clear sta table, add BCAST sta... */
|
|
}
|
|
|
|
static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
|
|
struct ieee80211_vif *vif,
|
|
struct ieee80211_if_conf *conf)
|
|
{
|
|
struct iwl_priv *priv = hw->priv;
|
|
DECLARE_MAC_BUF(mac);
|
|
unsigned long flags;
|
|
int rc;
|
|
|
|
if (conf == NULL)
|
|
return -EIO;
|
|
|
|
if (priv->vif != vif) {
|
|
IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
|
|
return 0;
|
|
}
|
|
|
|
if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
|
|
(!conf->beacon || !conf->ssid_len)) {
|
|
IWL_DEBUG_MAC80211
|
|
("Leaving in AP mode because HostAPD is not ready.\n");
|
|
return 0;
|
|
}
|
|
|
|
if (!iwl_is_alive(priv))
|
|
return -EAGAIN;
|
|
|
|
mutex_lock(&priv->mutex);
|
|
|
|
if (conf->bssid)
|
|
IWL_DEBUG_MAC80211("bssid: %s\n",
|
|
print_mac(mac, conf->bssid));
|
|
|
|
/*
|
|
* very dubious code was here; the probe filtering flag is never set:
|
|
*
|
|
if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
|
|
!(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
|
|
*/
|
|
|
|
if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
|
|
if (!conf->bssid) {
|
|
conf->bssid = priv->mac_addr;
|
|
memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
|
|
IWL_DEBUG_MAC80211("bssid was set to: %s\n",
|
|
print_mac(mac, conf->bssid));
|
|
}
|
|
if (priv->ibss_beacon)
|
|
dev_kfree_skb(priv->ibss_beacon);
|
|
|
|
priv->ibss_beacon = conf->beacon;
|
|
}
|
|
|
|
if (iwl_is_rfkill(priv))
|
|
goto done;
|
|
|
|
if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
|
|
!is_multicast_ether_addr(conf->bssid)) {
|
|
/* If there is currently a HW scan going on in the background
|
|
* then we need to cancel it else the RXON below will fail. */
|
|
if (iwl4965_scan_cancel_timeout(priv, 100)) {
|
|
IWL_WARNING("Aborted scan still in progress "
|
|
"after 100ms\n");
|
|
IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
|
|
mutex_unlock(&priv->mutex);
|
|
return -EAGAIN;
|
|
}
|
|
memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
|
|
|
|
/* TODO: Audit driver for usage of these members and see
|
|
* if mac80211 deprecates them (priv->bssid looks like it
|
|
* shouldn't be there, but I haven't scanned the IBSS code
|
|
* to verify) - jpk */
|
|
memcpy(priv->bssid, conf->bssid, ETH_ALEN);
|
|
|
|
if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
|
|
iwl4965_config_ap(priv);
|
|
else {
|
|
rc = iwl4965_commit_rxon(priv);
|
|
if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
|
|
iwl4965_rxon_add_station(
|
|
priv, priv->active_rxon.bssid_addr, 1);
|
|
}
|
|
|
|
} else {
|
|
iwl4965_scan_cancel_timeout(priv, 100);
|
|
priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
|
|
iwl4965_commit_rxon(priv);
|
|
}
|
|
|
|
done:
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
if (!conf->ssid_len)
|
|
memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
|
|
else
|
|
memcpy(priv->essid, conf->ssid, conf->ssid_len);
|
|
|
|
priv->essid_len = conf->ssid_len;
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
IWL_DEBUG_MAC80211("leave\n");
|
|
mutex_unlock(&priv->mutex);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void iwl4965_configure_filter(struct ieee80211_hw *hw,
|
|
unsigned int changed_flags,
|
|
unsigned int *total_flags,
|
|
int mc_count, struct dev_addr_list *mc_list)
|
|
{
|
|
/*
|
|
* XXX: dummy
|
|
* see also iwl4965_connection_init_rx_config
|
|
*/
|
|
*total_flags = 0;
|
|
}
|
|
|
|
static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
|
|
struct ieee80211_if_init_conf *conf)
|
|
{
|
|
struct iwl_priv *priv = hw->priv;
|
|
|
|
IWL_DEBUG_MAC80211("enter\n");
|
|
|
|
mutex_lock(&priv->mutex);
|
|
|
|
if (iwl_is_ready_rf(priv)) {
|
|
iwl4965_scan_cancel_timeout(priv, 100);
|
|
cancel_delayed_work(&priv->post_associate);
|
|
priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
|
|
iwl4965_commit_rxon(priv);
|
|
}
|
|
if (priv->vif == conf->vif) {
|
|
priv->vif = NULL;
|
|
memset(priv->bssid, 0, ETH_ALEN);
|
|
memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
|
|
priv->essid_len = 0;
|
|
}
|
|
mutex_unlock(&priv->mutex);
|
|
|
|
IWL_DEBUG_MAC80211("leave\n");
|
|
|
|
}
|
|
|
|
|
|
#ifdef CONFIG_IWL4965_HT
|
|
static void iwl4965_ht_conf(struct iwl_priv *priv,
|
|
struct ieee80211_bss_conf *bss_conf)
|
|
{
|
|
struct ieee80211_ht_info *ht_conf = bss_conf->ht_conf;
|
|
struct ieee80211_ht_bss_info *ht_bss_conf = bss_conf->ht_bss_conf;
|
|
struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
|
|
|
|
IWL_DEBUG_MAC80211("enter: \n");
|
|
|
|
iwl_conf->is_ht = bss_conf->assoc_ht;
|
|
|
|
if (!iwl_conf->is_ht)
|
|
return;
|
|
|
|
priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
|
|
|
|
if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
|
|
iwl_conf->sgf |= 0x1;
|
|
if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
|
|
iwl_conf->sgf |= 0x2;
|
|
|
|
iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
|
|
iwl_conf->max_amsdu_size =
|
|
!!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
|
|
|
|
iwl_conf->supported_chan_width =
|
|
!!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
|
|
iwl_conf->extension_chan_offset =
|
|
ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
|
|
/* If no above or below channel supplied disable FAT channel */
|
|
if (iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_ABOVE &&
|
|
iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_BELOW)
|
|
iwl_conf->supported_chan_width = 0;
|
|
|
|
iwl_conf->tx_mimo_ps_mode =
|
|
(u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
|
|
memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
|
|
|
|
iwl_conf->control_channel = ht_bss_conf->primary_channel;
|
|
iwl_conf->tx_chan_width =
|
|
!!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
|
|
iwl_conf->ht_protection =
|
|
ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
|
|
iwl_conf->non_GF_STA_present =
|
|
!!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
|
|
|
|
IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf->control_channel);
|
|
IWL_DEBUG_MAC80211("leave\n");
|
|
}
|
|
#else
|
|
static inline void iwl4965_ht_conf(struct iwl_priv *priv,
|
|
struct ieee80211_bss_conf *bss_conf)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
#define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
|
|
static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
|
|
struct ieee80211_vif *vif,
|
|
struct ieee80211_bss_conf *bss_conf,
|
|
u32 changes)
|
|
{
|
|
struct iwl_priv *priv = hw->priv;
|
|
|
|
IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
|
|
|
|
if (changes & BSS_CHANGED_ERP_PREAMBLE) {
|
|
IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
|
|
bss_conf->use_short_preamble);
|
|
if (bss_conf->use_short_preamble)
|
|
priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
|
|
else
|
|
priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
|
|
}
|
|
|
|
if (changes & BSS_CHANGED_ERP_CTS_PROT) {
|
|
IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
|
|
if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
|
|
priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
|
|
else
|
|
priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
|
|
}
|
|
|
|
if (changes & BSS_CHANGED_HT) {
|
|
IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
|
|
iwl4965_ht_conf(priv, bss_conf);
|
|
iwl4965_set_rxon_chain(priv);
|
|
}
|
|
|
|
if (changes & BSS_CHANGED_ASSOC) {
|
|
IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
|
|
/* This should never happen as this function should
|
|
* never be called from interrupt context. */
|
|
if (WARN_ON_ONCE(in_interrupt()))
|
|
return;
|
|
if (bss_conf->assoc) {
|
|
priv->assoc_id = bss_conf->aid;
|
|
priv->beacon_int = bss_conf->beacon_int;
|
|
priv->timestamp = bss_conf->timestamp;
|
|
priv->assoc_capability = bss_conf->assoc_capability;
|
|
priv->next_scan_jiffies = jiffies +
|
|
IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
|
|
mutex_lock(&priv->mutex);
|
|
iwl4965_post_associate(priv);
|
|
mutex_unlock(&priv->mutex);
|
|
} else {
|
|
priv->assoc_id = 0;
|
|
IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
|
|
}
|
|
} else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
|
|
IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
|
|
iwl_send_rxon_assoc(priv);
|
|
}
|
|
|
|
}
|
|
|
|
static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
|
|
{
|
|
int rc = 0;
|
|
unsigned long flags;
|
|
struct iwl_priv *priv = hw->priv;
|
|
|
|
IWL_DEBUG_MAC80211("enter\n");
|
|
|
|
mutex_lock(&priv->mutex);
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
|
|
if (!iwl_is_ready_rf(priv)) {
|
|
rc = -EIO;
|
|
IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
|
|
goto out_unlock;
|
|
}
|
|
|
|
if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { /* APs don't scan */
|
|
rc = -EIO;
|
|
IWL_ERROR("ERROR: APs don't scan\n");
|
|
goto out_unlock;
|
|
}
|
|
|
|
/* we don't schedule scan within next_scan_jiffies period */
|
|
if (priv->next_scan_jiffies &&
|
|
time_after(priv->next_scan_jiffies, jiffies)) {
|
|
rc = -EAGAIN;
|
|
goto out_unlock;
|
|
}
|
|
/* if we just finished scan ask for delay */
|
|
if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
|
|
IWL_DELAY_NEXT_SCAN, jiffies)) {
|
|
rc = -EAGAIN;
|
|
goto out_unlock;
|
|
}
|
|
if (len) {
|
|
IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
|
|
iwl4965_escape_essid(ssid, len), (int)len);
|
|
|
|
priv->one_direct_scan = 1;
|
|
priv->direct_ssid_len = (u8)
|
|
min((u8) len, (u8) IW_ESSID_MAX_SIZE);
|
|
memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
|
|
} else
|
|
priv->one_direct_scan = 0;
|
|
|
|
rc = iwl4965_scan_initiate(priv);
|
|
|
|
IWL_DEBUG_MAC80211("leave\n");
|
|
|
|
out_unlock:
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
mutex_unlock(&priv->mutex);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
|
|
struct ieee80211_key_conf *keyconf, const u8 *addr,
|
|
u32 iv32, u16 *phase1key)
|
|
{
|
|
struct iwl_priv *priv = hw->priv;
|
|
u8 sta_id = IWL_INVALID_STATION;
|
|
unsigned long flags;
|
|
__le16 key_flags = 0;
|
|
int i;
|
|
DECLARE_MAC_BUF(mac);
|
|
|
|
IWL_DEBUG_MAC80211("enter\n");
|
|
|
|
sta_id = iwl_find_station(priv, addr);
|
|
if (sta_id == IWL_INVALID_STATION) {
|
|
IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
|
|
print_mac(mac, addr));
|
|
return;
|
|
}
|
|
|
|
iwl4965_scan_cancel_timeout(priv, 100);
|
|
|
|
key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
|
|
key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
|
|
key_flags &= ~STA_KEY_FLG_INVALID;
|
|
|
|
if (sta_id == priv->hw_params.bcast_sta_id)
|
|
key_flags |= STA_KEY_MULTICAST_MSK;
|
|
|
|
spin_lock_irqsave(&priv->sta_lock, flags);
|
|
|
|
priv->stations[sta_id].sta.key.key_flags = key_flags;
|
|
priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
|
|
|
|
for (i = 0; i < 5; i++)
|
|
priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
|
|
cpu_to_le16(phase1key[i]);
|
|
|
|
priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
|
|
priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
|
|
|
|
iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
|
|
|
|
spin_unlock_irqrestore(&priv->sta_lock, flags);
|
|
|
|
IWL_DEBUG_MAC80211("leave\n");
|
|
}
|
|
|
|
static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
|
|
const u8 *local_addr, const u8 *addr,
|
|
struct ieee80211_key_conf *key)
|
|
{
|
|
struct iwl_priv *priv = hw->priv;
|
|
DECLARE_MAC_BUF(mac);
|
|
int ret = 0;
|
|
u8 sta_id = IWL_INVALID_STATION;
|
|
u8 is_default_wep_key = 0;
|
|
|
|
IWL_DEBUG_MAC80211("enter\n");
|
|
|
|
if (priv->hw_params.sw_crypto) {
|
|
IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
if (is_zero_ether_addr(addr))
|
|
/* only support pairwise keys */
|
|
return -EOPNOTSUPP;
|
|
|
|
sta_id = iwl_find_station(priv, addr);
|
|
if (sta_id == IWL_INVALID_STATION) {
|
|
IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
|
|
print_mac(mac, addr));
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
mutex_lock(&priv->mutex);
|
|
iwl4965_scan_cancel_timeout(priv, 100);
|
|
mutex_unlock(&priv->mutex);
|
|
|
|
/* If we are getting WEP group key and we didn't receive any key mapping
|
|
* so far, we are in legacy wep mode (group key only), otherwise we are
|
|
* in 1X mode.
|
|
* In legacy wep mode, we use another host command to the uCode */
|
|
if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
|
|
priv->iw_mode != IEEE80211_IF_TYPE_AP) {
|
|
if (cmd == SET_KEY)
|
|
is_default_wep_key = !priv->key_mapping_key;
|
|
else
|
|
is_default_wep_key = priv->default_wep_key;
|
|
}
|
|
|
|
switch (cmd) {
|
|
case SET_KEY:
|
|
if (is_default_wep_key)
|
|
ret = iwl_set_default_wep_key(priv, key);
|
|
else
|
|
ret = iwl_set_dynamic_key(priv, key, sta_id);
|
|
|
|
IWL_DEBUG_MAC80211("enable hwcrypto key\n");
|
|
break;
|
|
case DISABLE_KEY:
|
|
if (is_default_wep_key)
|
|
ret = iwl_remove_default_wep_key(priv, key);
|
|
else
|
|
ret = iwl_remove_dynamic_key(priv, key, sta_id);
|
|
|
|
IWL_DEBUG_MAC80211("disable hwcrypto key\n");
|
|
break;
|
|
default:
|
|
ret = -EINVAL;
|
|
}
|
|
|
|
IWL_DEBUG_MAC80211("leave\n");
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, int queue,
|
|
const struct ieee80211_tx_queue_params *params)
|
|
{
|
|
struct iwl_priv *priv = hw->priv;
|
|
unsigned long flags;
|
|
int q;
|
|
|
|
IWL_DEBUG_MAC80211("enter\n");
|
|
|
|
if (!iwl_is_ready_rf(priv)) {
|
|
IWL_DEBUG_MAC80211("leave - RF not ready\n");
|
|
return -EIO;
|
|
}
|
|
|
|
if (queue >= AC_NUM) {
|
|
IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
|
|
return 0;
|
|
}
|
|
|
|
if (!priv->qos_data.qos_enable) {
|
|
priv->qos_data.qos_active = 0;
|
|
IWL_DEBUG_MAC80211("leave - qos not enabled\n");
|
|
return 0;
|
|
}
|
|
q = AC_NUM - 1 - queue;
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
|
|
priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
|
|
priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
|
|
priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
|
|
priv->qos_data.def_qos_parm.ac[q].edca_txop =
|
|
cpu_to_le16((params->txop * 32));
|
|
|
|
priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
|
|
priv->qos_data.qos_active = 1;
|
|
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
mutex_lock(&priv->mutex);
|
|
if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
|
|
iwl4965_activate_qos(priv, 1);
|
|
else if (priv->assoc_id && iwl_is_associated(priv))
|
|
iwl4965_activate_qos(priv, 0);
|
|
|
|
mutex_unlock(&priv->mutex);
|
|
|
|
IWL_DEBUG_MAC80211("leave\n");
|
|
return 0;
|
|
}
|
|
|
|
static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
|
|
struct ieee80211_tx_queue_stats *stats)
|
|
{
|
|
struct iwl_priv *priv = hw->priv;
|
|
int i, avail;
|
|
struct iwl4965_tx_queue *txq;
|
|
struct iwl4965_queue *q;
|
|
unsigned long flags;
|
|
|
|
IWL_DEBUG_MAC80211("enter\n");
|
|
|
|
if (!iwl_is_ready_rf(priv)) {
|
|
IWL_DEBUG_MAC80211("leave - RF not ready\n");
|
|
return -EIO;
|
|
}
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
|
|
for (i = 0; i < AC_NUM; i++) {
|
|
txq = &priv->txq[i];
|
|
q = &txq->q;
|
|
avail = iwl4965_queue_space(q);
|
|
|
|
stats->data[i].len = q->n_window - avail;
|
|
stats->data[i].limit = q->n_window - q->high_mark;
|
|
stats->data[i].count = q->n_window;
|
|
|
|
}
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
IWL_DEBUG_MAC80211("leave\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
|
|
struct ieee80211_low_level_stats *stats)
|
|
{
|
|
IWL_DEBUG_MAC80211("enter\n");
|
|
IWL_DEBUG_MAC80211("leave\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
|
|
{
|
|
IWL_DEBUG_MAC80211("enter\n");
|
|
IWL_DEBUG_MAC80211("leave\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
|
|
{
|
|
struct iwl_priv *priv = hw->priv;
|
|
unsigned long flags;
|
|
|
|
mutex_lock(&priv->mutex);
|
|
IWL_DEBUG_MAC80211("enter\n");
|
|
|
|
priv->lq_mngr.lq_ready = 0;
|
|
#ifdef CONFIG_IWL4965_HT
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
#endif /* CONFIG_IWL4965_HT */
|
|
|
|
iwlcore_reset_qos(priv);
|
|
|
|
cancel_delayed_work(&priv->post_associate);
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
priv->assoc_id = 0;
|
|
priv->assoc_capability = 0;
|
|
priv->assoc_station_added = 0;
|
|
|
|
/* new association get rid of ibss beacon skb */
|
|
if (priv->ibss_beacon)
|
|
dev_kfree_skb(priv->ibss_beacon);
|
|
|
|
priv->ibss_beacon = NULL;
|
|
|
|
priv->beacon_int = priv->hw->conf.beacon_int;
|
|
priv->timestamp = 0;
|
|
if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
|
|
priv->beacon_int = 0;
|
|
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
if (!iwl_is_ready_rf(priv)) {
|
|
IWL_DEBUG_MAC80211("leave - not ready\n");
|
|
mutex_unlock(&priv->mutex);
|
|
return;
|
|
}
|
|
|
|
/* we are restarting association process
|
|
* clear RXON_FILTER_ASSOC_MSK bit
|
|
*/
|
|
if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
|
|
iwl4965_scan_cancel_timeout(priv, 100);
|
|
priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
|
|
iwl4965_commit_rxon(priv);
|
|
}
|
|
|
|
iwl_power_update_mode(priv, 0);
|
|
|
|
/* Per mac80211.h: This is only used in IBSS mode... */
|
|
if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
|
|
|
|
IWL_DEBUG_MAC80211("leave - not in IBSS\n");
|
|
mutex_unlock(&priv->mutex);
|
|
return;
|
|
}
|
|
|
|
iwl4965_set_rate(priv);
|
|
|
|
mutex_unlock(&priv->mutex);
|
|
|
|
IWL_DEBUG_MAC80211("leave\n");
|
|
}
|
|
|
|
static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
|
|
struct ieee80211_tx_control *control)
|
|
{
|
|
struct iwl_priv *priv = hw->priv;
|
|
unsigned long flags;
|
|
|
|
mutex_lock(&priv->mutex);
|
|
IWL_DEBUG_MAC80211("enter\n");
|
|
|
|
if (!iwl_is_ready_rf(priv)) {
|
|
IWL_DEBUG_MAC80211("leave - RF not ready\n");
|
|
mutex_unlock(&priv->mutex);
|
|
return -EIO;
|
|
}
|
|
|
|
if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
|
|
IWL_DEBUG_MAC80211("leave - not IBSS\n");
|
|
mutex_unlock(&priv->mutex);
|
|
return -EIO;
|
|
}
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
|
|
if (priv->ibss_beacon)
|
|
dev_kfree_skb(priv->ibss_beacon);
|
|
|
|
priv->ibss_beacon = skb;
|
|
|
|
priv->assoc_id = 0;
|
|
|
|
IWL_DEBUG_MAC80211("leave\n");
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
iwlcore_reset_qos(priv);
|
|
|
|
queue_work(priv->workqueue, &priv->post_associate.work);
|
|
|
|
mutex_unlock(&priv->mutex);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* sysfs attributes
|
|
*
|
|
*****************************************************************************/
|
|
|
|
#ifdef CONFIG_IWLWIFI_DEBUG
|
|
|
|
/*
|
|
* The following adds a new attribute to the sysfs representation
|
|
* of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
|
|
* used for controlling the debug level.
|
|
*
|
|
* See the level definitions in iwl for details.
|
|
*/
|
|
|
|
static ssize_t show_debug_level(struct device_driver *d, char *buf)
|
|
{
|
|
return sprintf(buf, "0x%08X\n", iwl_debug_level);
|
|
}
|
|
static ssize_t store_debug_level(struct device_driver *d,
|
|
const char *buf, size_t count)
|
|
{
|
|
char *p = (char *)buf;
|
|
u32 val;
|
|
|
|
val = simple_strtoul(p, &p, 0);
|
|
if (p == buf)
|
|
printk(KERN_INFO DRV_NAME
|
|
": %s is not in hex or decimal form.\n", buf);
|
|
else
|
|
iwl_debug_level = val;
|
|
|
|
return strnlen(buf, count);
|
|
}
|
|
|
|
static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
|
|
show_debug_level, store_debug_level);
|
|
|
|
#endif /* CONFIG_IWLWIFI_DEBUG */
|
|
|
|
|
|
static ssize_t show_temperature(struct device *d,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
|
|
|
|
if (!iwl_is_alive(priv))
|
|
return -EAGAIN;
|
|
|
|
return sprintf(buf, "%d\n", iwl4965_hw_get_temperature(priv));
|
|
}
|
|
|
|
static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
|
|
|
|
static ssize_t show_rs_window(struct device *d,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct iwl_priv *priv = d->driver_data;
|
|
return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
|
|
}
|
|
static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
|
|
|
|
static ssize_t show_tx_power(struct device *d,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
|
|
return sprintf(buf, "%d\n", priv->user_txpower_limit);
|
|
}
|
|
|
|
static ssize_t store_tx_power(struct device *d,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
|
|
char *p = (char *)buf;
|
|
u32 val;
|
|
|
|
val = simple_strtoul(p, &p, 10);
|
|
if (p == buf)
|
|
printk(KERN_INFO DRV_NAME
|
|
": %s is not in decimal form.\n", buf);
|
|
else
|
|
iwl4965_hw_reg_set_txpower(priv, val);
|
|
|
|
return count;
|
|
}
|
|
|
|
static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
|
|
|
|
static ssize_t show_flags(struct device *d,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
|
|
|
|
return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
|
|
}
|
|
|
|
static ssize_t store_flags(struct device *d,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
|
|
u32 flags = simple_strtoul(buf, NULL, 0);
|
|
|
|
mutex_lock(&priv->mutex);
|
|
if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
|
|
/* Cancel any currently running scans... */
|
|
if (iwl4965_scan_cancel_timeout(priv, 100))
|
|
IWL_WARNING("Could not cancel scan.\n");
|
|
else {
|
|
IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
|
|
flags);
|
|
priv->staging_rxon.flags = cpu_to_le32(flags);
|
|
iwl4965_commit_rxon(priv);
|
|
}
|
|
}
|
|
mutex_unlock(&priv->mutex);
|
|
|
|
return count;
|
|
}
|
|
|
|
static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
|
|
|
|
static ssize_t show_filter_flags(struct device *d,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
|
|
|
|
return sprintf(buf, "0x%04X\n",
|
|
le32_to_cpu(priv->active_rxon.filter_flags));
|
|
}
|
|
|
|
static ssize_t store_filter_flags(struct device *d,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
|
|
u32 filter_flags = simple_strtoul(buf, NULL, 0);
|
|
|
|
mutex_lock(&priv->mutex);
|
|
if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
|
|
/* Cancel any currently running scans... */
|
|
if (iwl4965_scan_cancel_timeout(priv, 100))
|
|
IWL_WARNING("Could not cancel scan.\n");
|
|
else {
|
|
IWL_DEBUG_INFO("Committing rxon.filter_flags = "
|
|
"0x%04X\n", filter_flags);
|
|
priv->staging_rxon.filter_flags =
|
|
cpu_to_le32(filter_flags);
|
|
iwl4965_commit_rxon(priv);
|
|
}
|
|
}
|
|
mutex_unlock(&priv->mutex);
|
|
|
|
return count;
|
|
}
|
|
|
|
static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
|
|
store_filter_flags);
|
|
|
|
#ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
|
|
|
|
static ssize_t show_measurement(struct device *d,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct iwl_priv *priv = dev_get_drvdata(d);
|
|
struct iwl4965_spectrum_notification measure_report;
|
|
u32 size = sizeof(measure_report), len = 0, ofs = 0;
|
|
u8 *data = (u8 *) & measure_report;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
if (!(priv->measurement_status & MEASUREMENT_READY)) {
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
return 0;
|
|
}
|
|
memcpy(&measure_report, &priv->measure_report, size);
|
|
priv->measurement_status = 0;
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
while (size && (PAGE_SIZE - len)) {
|
|
hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
|
|
PAGE_SIZE - len, 1);
|
|
len = strlen(buf);
|
|
if (PAGE_SIZE - len)
|
|
buf[len++] = '\n';
|
|
|
|
ofs += 16;
|
|
size -= min(size, 16U);
|
|
}
|
|
|
|
return len;
|
|
}
|
|
|
|
static ssize_t store_measurement(struct device *d,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct iwl_priv *priv = dev_get_drvdata(d);
|
|
struct ieee80211_measurement_params params = {
|
|
.channel = le16_to_cpu(priv->active_rxon.channel),
|
|
.start_time = cpu_to_le64(priv->last_tsf),
|
|
.duration = cpu_to_le16(1),
|
|
};
|
|
u8 type = IWL_MEASURE_BASIC;
|
|
u8 buffer[32];
|
|
u8 channel;
|
|
|
|
if (count) {
|
|
char *p = buffer;
|
|
strncpy(buffer, buf, min(sizeof(buffer), count));
|
|
channel = simple_strtoul(p, NULL, 0);
|
|
if (channel)
|
|
params.channel = channel;
|
|
|
|
p = buffer;
|
|
while (*p && *p != ' ')
|
|
p++;
|
|
if (*p)
|
|
type = simple_strtoul(p + 1, NULL, 0);
|
|
}
|
|
|
|
IWL_DEBUG_INFO("Invoking measurement of type %d on "
|
|
"channel %d (for '%s')\n", type, params.channel, buf);
|
|
iwl4965_get_measurement(priv, ¶ms, type);
|
|
|
|
return count;
|
|
}
|
|
|
|
static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
|
|
show_measurement, store_measurement);
|
|
#endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
|
|
|
|
static ssize_t store_retry_rate(struct device *d,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct iwl_priv *priv = dev_get_drvdata(d);
|
|
|
|
priv->retry_rate = simple_strtoul(buf, NULL, 0);
|
|
if (priv->retry_rate <= 0)
|
|
priv->retry_rate = 1;
|
|
|
|
return count;
|
|
}
|
|
|
|
static ssize_t show_retry_rate(struct device *d,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct iwl_priv *priv = dev_get_drvdata(d);
|
|
return sprintf(buf, "%d", priv->retry_rate);
|
|
}
|
|
|
|
static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
|
|
store_retry_rate);
|
|
|
|
static ssize_t store_power_level(struct device *d,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct iwl_priv *priv = dev_get_drvdata(d);
|
|
int rc;
|
|
int mode;
|
|
|
|
mode = simple_strtoul(buf, NULL, 0);
|
|
mutex_lock(&priv->mutex);
|
|
|
|
if (!iwl_is_ready(priv)) {
|
|
rc = -EAGAIN;
|
|
goto out;
|
|
}
|
|
|
|
rc = iwl_power_set_user_mode(priv, mode);
|
|
if (rc) {
|
|
IWL_DEBUG_MAC80211("failed setting power mode.\n");
|
|
goto out;
|
|
}
|
|
rc = count;
|
|
|
|
out:
|
|
mutex_unlock(&priv->mutex);
|
|
return rc;
|
|
}
|
|
|
|
#define MAX_WX_STRING 80
|
|
|
|
/* Values are in microsecond */
|
|
static const s32 timeout_duration[] = {
|
|
350000,
|
|
250000,
|
|
75000,
|
|
37000,
|
|
25000,
|
|
};
|
|
static const s32 period_duration[] = {
|
|
400000,
|
|
700000,
|
|
1000000,
|
|
1000000,
|
|
1000000
|
|
};
|
|
|
|
static ssize_t show_power_level(struct device *d,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct iwl_priv *priv = dev_get_drvdata(d);
|
|
int level = priv->power_data.power_mode;
|
|
char *p = buf;
|
|
|
|
p += sprintf(p, "%d ", level);
|
|
switch (level) {
|
|
case IWL_POWER_MODE_CAM:
|
|
case IWL_POWER_AC:
|
|
p += sprintf(p, "(AC)");
|
|
break;
|
|
case IWL_POWER_BATTERY:
|
|
p += sprintf(p, "(BATTERY)");
|
|
break;
|
|
default:
|
|
p += sprintf(p,
|
|
"(Timeout %dms, Period %dms)",
|
|
timeout_duration[level - 1] / 1000,
|
|
period_duration[level - 1] / 1000);
|
|
}
|
|
/*
|
|
if (!(priv->power_mode & IWL_POWER_ENABLED))
|
|
p += sprintf(p, " OFF\n");
|
|
else
|
|
p += sprintf(p, " \n");
|
|
*/
|
|
p += sprintf(p, " \n");
|
|
return (p - buf + 1);
|
|
}
|
|
|
|
static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
|
|
store_power_level);
|
|
|
|
static ssize_t show_channels(struct device *d,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
/* all this shit doesn't belong into sysfs anyway */
|
|
return 0;
|
|
}
|
|
|
|
static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
|
|
|
|
static ssize_t show_statistics(struct device *d,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct iwl_priv *priv = dev_get_drvdata(d);
|
|
u32 size = sizeof(struct iwl4965_notif_statistics);
|
|
u32 len = 0, ofs = 0;
|
|
u8 *data = (u8 *) & priv->statistics;
|
|
int rc = 0;
|
|
|
|
if (!iwl_is_alive(priv))
|
|
return -EAGAIN;
|
|
|
|
mutex_lock(&priv->mutex);
|
|
rc = iwl_send_statistics_request(priv, 0);
|
|
mutex_unlock(&priv->mutex);
|
|
|
|
if (rc) {
|
|
len = sprintf(buf,
|
|
"Error sending statistics request: 0x%08X\n", rc);
|
|
return len;
|
|
}
|
|
|
|
while (size && (PAGE_SIZE - len)) {
|
|
hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
|
|
PAGE_SIZE - len, 1);
|
|
len = strlen(buf);
|
|
if (PAGE_SIZE - len)
|
|
buf[len++] = '\n';
|
|
|
|
ofs += 16;
|
|
size -= min(size, 16U);
|
|
}
|
|
|
|
return len;
|
|
}
|
|
|
|
static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
|
|
|
|
static ssize_t show_antenna(struct device *d,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct iwl_priv *priv = dev_get_drvdata(d);
|
|
|
|
if (!iwl_is_alive(priv))
|
|
return -EAGAIN;
|
|
|
|
return sprintf(buf, "%d\n", priv->antenna);
|
|
}
|
|
|
|
static ssize_t store_antenna(struct device *d,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
int ant;
|
|
struct iwl_priv *priv = dev_get_drvdata(d);
|
|
|
|
if (count == 0)
|
|
return 0;
|
|
|
|
if (sscanf(buf, "%1i", &ant) != 1) {
|
|
IWL_DEBUG_INFO("not in hex or decimal form.\n");
|
|
return count;
|
|
}
|
|
|
|
if ((ant >= 0) && (ant <= 2)) {
|
|
IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
|
|
priv->antenna = (enum iwl4965_antenna)ant;
|
|
} else
|
|
IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
|
|
|
|
|
|
return count;
|
|
}
|
|
|
|
static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
|
|
|
|
static ssize_t show_status(struct device *d,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
|
|
if (!iwl_is_alive(priv))
|
|
return -EAGAIN;
|
|
return sprintf(buf, "0x%08x\n", (int)priv->status);
|
|
}
|
|
|
|
static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
|
|
|
|
static ssize_t dump_error_log(struct device *d,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
char *p = (char *)buf;
|
|
|
|
if (p[0] == '1')
|
|
iwl4965_dump_nic_error_log((struct iwl_priv *)d->driver_data);
|
|
|
|
return strnlen(buf, count);
|
|
}
|
|
|
|
static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
|
|
|
|
static ssize_t dump_event_log(struct device *d,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
char *p = (char *)buf;
|
|
|
|
if (p[0] == '1')
|
|
iwl4965_dump_nic_event_log((struct iwl_priv *)d->driver_data);
|
|
|
|
return strnlen(buf, count);
|
|
}
|
|
|
|
static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* driver setup and teardown
|
|
*
|
|
*****************************************************************************/
|
|
|
|
static void iwl4965_setup_deferred_work(struct iwl_priv *priv)
|
|
{
|
|
priv->workqueue = create_workqueue(DRV_NAME);
|
|
|
|
init_waitqueue_head(&priv->wait_command_queue);
|
|
|
|
INIT_WORK(&priv->up, iwl4965_bg_up);
|
|
INIT_WORK(&priv->restart, iwl4965_bg_restart);
|
|
INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
|
|
INIT_WORK(&priv->scan_completed, iwl4965_bg_scan_completed);
|
|
INIT_WORK(&priv->request_scan, iwl4965_bg_request_scan);
|
|
INIT_WORK(&priv->abort_scan, iwl4965_bg_abort_scan);
|
|
INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
|
|
INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
|
|
INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
|
|
INIT_DELAYED_WORK(&priv->init_alive_start, iwl4965_bg_init_alive_start);
|
|
INIT_DELAYED_WORK(&priv->alive_start, iwl4965_bg_alive_start);
|
|
INIT_DELAYED_WORK(&priv->scan_check, iwl4965_bg_scan_check);
|
|
|
|
iwl4965_hw_setup_deferred_work(priv);
|
|
|
|
tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
|
|
iwl4965_irq_tasklet, (unsigned long)priv);
|
|
}
|
|
|
|
static void iwl4965_cancel_deferred_work(struct iwl_priv *priv)
|
|
{
|
|
iwl4965_hw_cancel_deferred_work(priv);
|
|
|
|
cancel_delayed_work_sync(&priv->init_alive_start);
|
|
cancel_delayed_work(&priv->scan_check);
|
|
cancel_delayed_work(&priv->alive_start);
|
|
cancel_delayed_work(&priv->post_associate);
|
|
cancel_work_sync(&priv->beacon_update);
|
|
}
|
|
|
|
static struct attribute *iwl4965_sysfs_entries[] = {
|
|
&dev_attr_antenna.attr,
|
|
&dev_attr_channels.attr,
|
|
&dev_attr_dump_errors.attr,
|
|
&dev_attr_dump_events.attr,
|
|
&dev_attr_flags.attr,
|
|
&dev_attr_filter_flags.attr,
|
|
#ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
|
|
&dev_attr_measurement.attr,
|
|
#endif
|
|
&dev_attr_power_level.attr,
|
|
&dev_attr_retry_rate.attr,
|
|
&dev_attr_rs_window.attr,
|
|
&dev_attr_statistics.attr,
|
|
&dev_attr_status.attr,
|
|
&dev_attr_temperature.attr,
|
|
&dev_attr_tx_power.attr,
|
|
|
|
NULL
|
|
};
|
|
|
|
static struct attribute_group iwl4965_attribute_group = {
|
|
.name = NULL, /* put in device directory */
|
|
.attrs = iwl4965_sysfs_entries,
|
|
};
|
|
|
|
static struct ieee80211_ops iwl4965_hw_ops = {
|
|
.tx = iwl4965_mac_tx,
|
|
.start = iwl4965_mac_start,
|
|
.stop = iwl4965_mac_stop,
|
|
.add_interface = iwl4965_mac_add_interface,
|
|
.remove_interface = iwl4965_mac_remove_interface,
|
|
.config = iwl4965_mac_config,
|
|
.config_interface = iwl4965_mac_config_interface,
|
|
.configure_filter = iwl4965_configure_filter,
|
|
.set_key = iwl4965_mac_set_key,
|
|
.update_tkip_key = iwl4965_mac_update_tkip_key,
|
|
.get_stats = iwl4965_mac_get_stats,
|
|
.get_tx_stats = iwl4965_mac_get_tx_stats,
|
|
.conf_tx = iwl4965_mac_conf_tx,
|
|
.get_tsf = iwl4965_mac_get_tsf,
|
|
.reset_tsf = iwl4965_mac_reset_tsf,
|
|
.beacon_update = iwl4965_mac_beacon_update,
|
|
.bss_info_changed = iwl4965_bss_info_changed,
|
|
#ifdef CONFIG_IWL4965_HT
|
|
.ampdu_action = iwl4965_mac_ampdu_action,
|
|
#endif /* CONFIG_IWL4965_HT */
|
|
.hw_scan = iwl4965_mac_hw_scan
|
|
};
|
|
|
|
static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
|
|
{
|
|
int err = 0;
|
|
struct iwl_priv *priv;
|
|
struct ieee80211_hw *hw;
|
|
struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
|
|
unsigned long flags;
|
|
DECLARE_MAC_BUF(mac);
|
|
|
|
/************************
|
|
* 1. Allocating HW data
|
|
************************/
|
|
|
|
/* Disabling hardware scan means that mac80211 will perform scans
|
|
* "the hard way", rather than using device's scan. */
|
|
if (cfg->mod_params->disable_hw_scan) {
|
|
IWL_DEBUG_INFO("Disabling hw_scan\n");
|
|
iwl4965_hw_ops.hw_scan = NULL;
|
|
}
|
|
|
|
hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
|
|
if (!hw) {
|
|
err = -ENOMEM;
|
|
goto out;
|
|
}
|
|
priv = hw->priv;
|
|
/* At this point both hw and priv are allocated. */
|
|
|
|
SET_IEEE80211_DEV(hw, &pdev->dev);
|
|
|
|
IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
|
|
priv->cfg = cfg;
|
|
priv->pci_dev = pdev;
|
|
|
|
#ifdef CONFIG_IWLWIFI_DEBUG
|
|
iwl_debug_level = priv->cfg->mod_params->debug;
|
|
atomic_set(&priv->restrict_refcnt, 0);
|
|
#endif
|
|
|
|
/**************************
|
|
* 2. Initializing PCI bus
|
|
**************************/
|
|
if (pci_enable_device(pdev)) {
|
|
err = -ENODEV;
|
|
goto out_ieee80211_free_hw;
|
|
}
|
|
|
|
pci_set_master(pdev);
|
|
|
|
err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
|
|
if (!err)
|
|
err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
|
|
if (err) {
|
|
err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
|
|
if (!err)
|
|
err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
|
|
/* both attempts failed: */
|
|
if (err) {
|
|
printk(KERN_WARNING "%s: No suitable DMA available.\n",
|
|
DRV_NAME);
|
|
goto out_pci_disable_device;
|
|
}
|
|
}
|
|
|
|
err = pci_request_regions(pdev, DRV_NAME);
|
|
if (err)
|
|
goto out_pci_disable_device;
|
|
|
|
pci_set_drvdata(pdev, priv);
|
|
|
|
/* We disable the RETRY_TIMEOUT register (0x41) to keep
|
|
* PCI Tx retries from interfering with C3 CPU state */
|
|
pci_write_config_byte(pdev, 0x41, 0x00);
|
|
|
|
/***********************
|
|
* 3. Read REV register
|
|
***********************/
|
|
priv->hw_base = pci_iomap(pdev, 0, 0);
|
|
if (!priv->hw_base) {
|
|
err = -ENODEV;
|
|
goto out_pci_release_regions;
|
|
}
|
|
|
|
IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
|
|
(unsigned long long) pci_resource_len(pdev, 0));
|
|
IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
|
|
|
|
printk(KERN_INFO DRV_NAME
|
|
": Detected Intel Wireless WiFi Link %s\n", priv->cfg->name);
|
|
|
|
/*****************
|
|
* 4. Read EEPROM
|
|
*****************/
|
|
/* nic init */
|
|
iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
|
|
CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
|
|
|
|
iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
|
|
err = iwl_poll_bit(priv, CSR_GP_CNTRL,
|
|
CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
|
|
CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
|
|
if (err < 0) {
|
|
IWL_DEBUG_INFO("Failed to init the card\n");
|
|
goto out_iounmap;
|
|
}
|
|
/* Read the EEPROM */
|
|
err = iwl_eeprom_init(priv);
|
|
if (err) {
|
|
IWL_ERROR("Unable to init EEPROM\n");
|
|
goto out_iounmap;
|
|
}
|
|
/* MAC Address location in EEPROM same for 3945/4965 */
|
|
iwl_eeprom_get_mac(priv, priv->mac_addr);
|
|
IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
|
|
SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
|
|
|
|
/************************
|
|
* 5. Setup HW constants
|
|
************************/
|
|
/* Device-specific setup */
|
|
if (priv->cfg->ops->lib->set_hw_params(priv)) {
|
|
IWL_ERROR("failed to set hw parameters\n");
|
|
goto out_free_eeprom;
|
|
}
|
|
|
|
/*******************
|
|
* 6. Setup hw/priv
|
|
*******************/
|
|
|
|
err = iwl_setup(priv);
|
|
if (err)
|
|
goto out_unset_hw_params;
|
|
/* At this point both hw and priv are initialized. */
|
|
|
|
/**********************************
|
|
* 7. Initialize module parameters
|
|
**********************************/
|
|
|
|
/* Disable radio (SW RF KILL) via parameter when loading driver */
|
|
if (priv->cfg->mod_params->disable) {
|
|
set_bit(STATUS_RF_KILL_SW, &priv->status);
|
|
IWL_DEBUG_INFO("Radio disabled.\n");
|
|
}
|
|
|
|
if (priv->cfg->mod_params->enable_qos)
|
|
priv->qos_data.qos_enable = 1;
|
|
|
|
/********************
|
|
* 8. Setup services
|
|
********************/
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
iwl4965_disable_interrupts(priv);
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
|
|
if (err) {
|
|
IWL_ERROR("failed to create sysfs device attributes\n");
|
|
goto out_unset_hw_params;
|
|
}
|
|
|
|
err = iwl_dbgfs_register(priv, DRV_NAME);
|
|
if (err) {
|
|
IWL_ERROR("failed to create debugfs files\n");
|
|
goto out_remove_sysfs;
|
|
}
|
|
|
|
iwl4965_setup_deferred_work(priv);
|
|
iwl4965_setup_rx_handlers(priv);
|
|
|
|
/********************
|
|
* 9. Conclude
|
|
********************/
|
|
pci_save_state(pdev);
|
|
pci_disable_device(pdev);
|
|
|
|
/* notify iwlcore to init */
|
|
iwlcore_low_level_notify(priv, IWLCORE_INIT_EVT);
|
|
return 0;
|
|
|
|
out_remove_sysfs:
|
|
sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
|
|
out_unset_hw_params:
|
|
iwl4965_unset_hw_params(priv);
|
|
out_free_eeprom:
|
|
iwl_eeprom_free(priv);
|
|
out_iounmap:
|
|
pci_iounmap(pdev, priv->hw_base);
|
|
out_pci_release_regions:
|
|
pci_release_regions(pdev);
|
|
pci_set_drvdata(pdev, NULL);
|
|
out_pci_disable_device:
|
|
pci_disable_device(pdev);
|
|
out_ieee80211_free_hw:
|
|
ieee80211_free_hw(priv->hw);
|
|
out:
|
|
return err;
|
|
}
|
|
|
|
static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
|
|
{
|
|
struct iwl_priv *priv = pci_get_drvdata(pdev);
|
|
struct list_head *p, *q;
|
|
int i;
|
|
unsigned long flags;
|
|
|
|
if (!priv)
|
|
return;
|
|
|
|
IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
|
|
|
|
if (priv->mac80211_registered) {
|
|
ieee80211_unregister_hw(priv->hw);
|
|
priv->mac80211_registered = 0;
|
|
}
|
|
|
|
set_bit(STATUS_EXIT_PENDING, &priv->status);
|
|
|
|
iwl4965_down(priv);
|
|
|
|
/* make sure we flush any pending irq or
|
|
* tasklet for the driver
|
|
*/
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
iwl4965_disable_interrupts(priv);
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
iwl_synchronize_irq(priv);
|
|
|
|
/* Free MAC hash list for ADHOC */
|
|
for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
|
|
list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
|
|
list_del(p);
|
|
kfree(list_entry(p, struct iwl4965_ibss_seq, list));
|
|
}
|
|
}
|
|
|
|
iwlcore_low_level_notify(priv, IWLCORE_REMOVE_EVT);
|
|
iwl_dbgfs_unregister(priv);
|
|
sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
|
|
|
|
iwl4965_dealloc_ucode_pci(priv);
|
|
|
|
if (priv->rxq.bd)
|
|
iwl4965_rx_queue_free(priv, &priv->rxq);
|
|
iwl4965_hw_txq_ctx_free(priv);
|
|
|
|
iwl4965_unset_hw_params(priv);
|
|
iwlcore_clear_stations_table(priv);
|
|
iwl_eeprom_free(priv);
|
|
|
|
|
|
/*netif_stop_queue(dev); */
|
|
flush_workqueue(priv->workqueue);
|
|
|
|
/* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
|
|
* priv->workqueue... so we can't take down the workqueue
|
|
* until now... */
|
|
destroy_workqueue(priv->workqueue);
|
|
priv->workqueue = NULL;
|
|
|
|
pci_iounmap(pdev, priv->hw_base);
|
|
pci_release_regions(pdev);
|
|
pci_disable_device(pdev);
|
|
pci_set_drvdata(pdev, NULL);
|
|
|
|
iwl_free_channel_map(priv);
|
|
iwl4965_free_geos(priv);
|
|
|
|
if (priv->ibss_beacon)
|
|
dev_kfree_skb(priv->ibss_beacon);
|
|
|
|
ieee80211_free_hw(priv->hw);
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
|
|
static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
|
|
{
|
|
struct iwl_priv *priv = pci_get_drvdata(pdev);
|
|
|
|
if (priv->is_open) {
|
|
set_bit(STATUS_IN_SUSPEND, &priv->status);
|
|
iwl4965_mac_stop(priv->hw);
|
|
priv->is_open = 1;
|
|
}
|
|
|
|
pci_set_power_state(pdev, PCI_D3hot);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int iwl4965_pci_resume(struct pci_dev *pdev)
|
|
{
|
|
struct iwl_priv *priv = pci_get_drvdata(pdev);
|
|
|
|
pci_set_power_state(pdev, PCI_D0);
|
|
|
|
if (priv->is_open)
|
|
iwl4965_mac_start(priv->hw);
|
|
|
|
clear_bit(STATUS_IN_SUSPEND, &priv->status);
|
|
return 0;
|
|
}
|
|
|
|
#endif /* CONFIG_PM */
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* driver and module entry point
|
|
*
|
|
*****************************************************************************/
|
|
|
|
/* Hardware specific file defines the PCI IDs table for that hardware module */
|
|
static struct pci_device_id iwl_hw_card_ids[] = {
|
|
{IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
|
|
{IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
|
|
{0}
|
|
};
|
|
MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
|
|
|
|
static struct pci_driver iwl_driver = {
|
|
.name = DRV_NAME,
|
|
.id_table = iwl_hw_card_ids,
|
|
.probe = iwl4965_pci_probe,
|
|
.remove = __devexit_p(iwl4965_pci_remove),
|
|
#ifdef CONFIG_PM
|
|
.suspend = iwl4965_pci_suspend,
|
|
.resume = iwl4965_pci_resume,
|
|
#endif
|
|
};
|
|
|
|
static int __init iwl4965_init(void)
|
|
{
|
|
|
|
int ret;
|
|
printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
|
|
printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
|
|
|
|
ret = iwl4965_rate_control_register();
|
|
if (ret) {
|
|
IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = pci_register_driver(&iwl_driver);
|
|
if (ret) {
|
|
IWL_ERROR("Unable to initialize PCI module\n");
|
|
goto error_register;
|
|
}
|
|
#ifdef CONFIG_IWLWIFI_DEBUG
|
|
ret = driver_create_file(&iwl_driver.driver, &driver_attr_debug_level);
|
|
if (ret) {
|
|
IWL_ERROR("Unable to create driver sysfs file\n");
|
|
goto error_debug;
|
|
}
|
|
#endif
|
|
|
|
return ret;
|
|
|
|
#ifdef CONFIG_IWLWIFI_DEBUG
|
|
error_debug:
|
|
pci_unregister_driver(&iwl_driver);
|
|
#endif
|
|
error_register:
|
|
iwl4965_rate_control_unregister();
|
|
return ret;
|
|
}
|
|
|
|
static void __exit iwl4965_exit(void)
|
|
{
|
|
#ifdef CONFIG_IWLWIFI_DEBUG
|
|
driver_remove_file(&iwl_driver.driver, &driver_attr_debug_level);
|
|
#endif
|
|
pci_unregister_driver(&iwl_driver);
|
|
iwl4965_rate_control_unregister();
|
|
}
|
|
|
|
module_exit(iwl4965_exit);
|
|
module_init(iwl4965_init);
|