******************************************************************************/
/* module parameters */
-static int iwl3945_param_disable_hw_scan;
-static int iwl3945_param_debug;
-static int iwl3945_param_disable; /* def: enable radio */
+static int iwl3945_param_disable_hw_scan; /* def: 0 = use 3945's h/w scan */
+static int iwl3945_param_debug; /* def: 0 = minimal debug log messages */
+static int iwl3945_param_disable; /* def: 0 = enable radio */
static int iwl3945_param_antenna; /* def: 0 = both antennas (use diversity) */
-int iwl3945_param_hwcrypto; /* def: using software encryption */
-static int iwl3945_param_qos_enable = 1;
-int iwl3945_param_queues_num = IWL_MAX_NUM_QUEUES;
+int iwl3945_param_hwcrypto; /* def: 0 = use software encryption */
+static int iwl3945_param_qos_enable = 1; /* def: 1 = use quality of service */
+int iwl3945_param_queues_num = IWL_MAX_NUM_QUEUES; /* def: 8 Tx queues */
/*
* module name, copyright, version, etc.
#define VS
#endif
-#define IWLWIFI_VERSION "1.1.19k" VD VS
+#define IWLWIFI_VERSION "1.2.22k" VD VS
#define DRV_COPYRIGHT "Copyright(c) 2003-2007 Intel Corporation"
#define DRV_VERSION IWLWIFI_VERSION
*
* Theory of operation
*
- * A queue is a circular buffers with 'Read' and 'Write' pointers.
- * 2 empty entries always kept in the buffer to protect from overflow.
+ * A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer
+ * of buffer descriptors, each of which points to one or more data buffers for
+ * the device to read from or fill. Driver and device exchange status of each
+ * queue via "read" and "write" pointers. Driver keeps minimum of 2 empty
+ * entries in each circular buffer, to protect against confusing empty and full
+ * queue states.
+ *
+ * The device reads or writes the data in the queues via the device's several
+ * DMA/FIFO channels. Each queue is mapped to a single DMA channel.
*
* For Tx queue, there are low mark and high mark limits. If, after queuing
* the packet for Tx, free space become < low mark, Tx queue stopped. When
* reclaiming packets (on 'tx done IRQ), if free space become > high mark,
* Tx queue resumed.
*
- * The IWL operates with six queues, one receive queue in the device's
- * sram, one transmit queue for sending commands to the device firmware,
- * and four transmit queues for data.
+ * The 3945 operates with six queues: One receive queue, one transmit queue
+ * (#4) for sending commands to the device firmware, and four transmit queues
+ * (#0-3) for data tx via EDCA. An additional 2 HCCA queues are unused.
***************************************************/
static int iwl3945_queue_space(const struct iwl3945_queue *q)
return s;
}
-/* XXX: n_bd must be power-of-two size */
+/**
+ * iwl3945_queue_inc_wrap - increment queue index, wrap back to beginning
+ * @index -- current index
+ * @n_bd -- total number of entries in queue (must be power of 2)
+ */
static inline int iwl3945_queue_inc_wrap(int index, int n_bd)
{
return ++index & (n_bd - 1);
}
-/* XXX: n_bd must be power-of-two size */
+/**
+ * iwl3945_queue_dec_wrap - increment queue index, wrap back to end
+ * @index -- current index
+ * @n_bd -- total number of entries in queue (must be power of 2)
+ */
static inline int iwl3945_queue_dec_wrap(int index, int n_bd)
{
return --index & (n_bd - 1);
static inline u8 get_cmd_index(struct iwl3945_queue *q, u32 index, int is_huge)
{
+ /* This is for scan command, the big buffer at end of command array */
if (is_huge)
- return q->n_window;
+ return q->n_window; /* must be power of 2 */
+ /* Otherwise, use normal size buffers */
return index & (q->n_window - 1);
}
+/**
+ * iwl3945_queue_init - Initialize queue's high/low-water and read/write indexes
+ */
static int iwl3945_queue_init(struct iwl3945_priv *priv, struct iwl3945_queue *q,
int count, int slots_num, u32 id)
{
return 0;
}
+/**
+ * iwl3945_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue
+ */
static int iwl3945_tx_queue_alloc(struct iwl3945_priv *priv,
struct iwl3945_tx_queue *txq, u32 id)
{
struct pci_dev *dev = priv->pci_dev;
+ /* Driver private data, only for Tx (not command) queues,
+ * not shared with device. */
if (id != IWL_CMD_QUEUE_NUM) {
txq->txb = kmalloc(sizeof(txq->txb[0]) *
TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
} else
txq->txb = NULL;
+ /* Circular buffer of transmit frame descriptors (TFDs),
+ * shared with device */
txq->bd = pci_alloc_consistent(dev,
sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX,
&txq->q.dma_addr);
return -ENOMEM;
}
+/**
+ * iwl3945_tx_queue_init - Allocate and initialize one tx/cmd queue
+ */
int iwl3945_tx_queue_init(struct iwl3945_priv *priv,
struct iwl3945_tx_queue *txq, int slots_num, u32 txq_id)
{
int len;
int rc = 0;
- /* allocate command space + one big command for scan since scan
- * command is very huge the system will not have two scan at the
- * same time */
+ /*
+ * Alloc buffer array for commands (Tx or other types of commands).
+ * For the command queue (#4), allocate command space + one big
+ * command for scan, since scan command is very huge; the system will
+ * not have two scans at the same time, so only one is needed.
+ * For data Tx queues (all other queues), no super-size command
+ * space is needed.
+ */
len = sizeof(struct iwl3945_cmd) * slots_num;
if (txq_id == IWL_CMD_QUEUE_NUM)
len += IWL_MAX_SCAN_SIZE;
if (!txq->cmd)
return -ENOMEM;
+ /* Alloc driver data array and TFD circular buffer */
rc = iwl3945_tx_queue_alloc(priv, txq, txq_id);
if (rc) {
pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
/* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
* iwl3945_queue_inc_wrap and iwl3945_queue_dec_wrap are broken. */
BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
+
+ /* Initialize queue high/low-water, head/tail indexes */
iwl3945_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
+ /* Tell device where to find queue, enable DMA channel. */
iwl3945_hw_tx_queue_init(priv, txq);
return 0;
* @txq: Transmit queue to deallocate.
*
* Empty queue by removing and destroying all BD's.
- * Free all buffers. txq itself is not freed.
- *
+ * Free all buffers.
+ * 0-fill, but do not free "txq" descriptor structure.
*/
void iwl3945_tx_queue_free(struct iwl3945_priv *priv, struct iwl3945_tx_queue *txq)
{
if (q->id == IWL_CMD_QUEUE_NUM)
len += IWL_MAX_SCAN_SIZE;
+ /* De-alloc array of command/tx buffers */
pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
- /* free buffers belonging to queue itself */
+ /* De-alloc circular buffer of TFDs */
if (txq->q.n_bd)
pci_free_consistent(dev, sizeof(struct iwl3945_tfd_frame) *
txq->q.n_bd, txq->bd, txq->q.dma_addr);
+ /* De-alloc array of per-TFD driver data */
if (txq->txb) {
kfree(txq->txb);
txq->txb = NULL;
}
- /* 0 fill whole structure */
+ /* 0-fill queue descriptor structure */
memset(txq, 0, sizeof(*txq));
}
/**************************************************************/
#if 0 /* temporary disable till we add real remove station */
+/**
+ * iwl3945_remove_station - Remove driver's knowledge of station.
+ *
+ * NOTE: This does not remove station from device's station table.
+ */
static u8 iwl3945_remove_station(struct iwl3945_priv *priv, const u8 *addr, int is_ap)
{
int index = IWL_INVALID_STATION;
return 0;
}
#endif
+
+/**
+ * iwl3945_clear_stations_table - Clear the driver's station table
+ *
+ * NOTE: This does not clear or otherwise alter the device's station table.
+ */
static void iwl3945_clear_stations_table(struct iwl3945_priv *priv)
{
unsigned long flags;
spin_unlock_irqrestore(&priv->sta_lock, flags);
}
-
+/**
+ * iwl3945_add_station - Add station to station tables in driver and device
+ */
u8 iwl3945_add_station(struct iwl3945_priv *priv, const u8 *addr, int is_ap, u8 flags)
{
int i;
station->used = 1;
priv->num_stations++;
+ /* Set up the REPLY_ADD_STA command to send to device */
memset(&station->sta, 0, sizeof(struct iwl3945_addsta_cmd));
memcpy(station->sta.sta.addr, addr, ETH_ALEN);
station->sta.mode = 0;
le16_to_cpu(station->sta.rate_n_flags);
spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
+
+ /* Add station to device's station table */
iwl3945_send_add_station(priv, &station->sta, flags);
return index;
fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
txq->need_update = 1;
+
+ /* Increment and update queue's write index */
q->write_ptr = iwl3945_queue_inc_wrap(q->write_ptr, q->n_bd);
ret = iwl3945_tx_queue_update_write_ptr(priv, txq);
return priv->ibss_beacon->len;
}
-static int iwl3945_rate_index_from_plcp(int plcp)
-{
- int i = 0;
-
- for (i = 0; i < IWL_RATE_COUNT; i++)
- if (iwl3945_rates[i].plcp == plcp)
- return i;
- return -1;
-}
-
static u8 iwl3945_rate_get_lowest_plcp(int rate_mask)
{
u8 i;
/**
* iwl3945_eeprom_init - read EEPROM contents
*
- * Load the EEPROM from adapter into priv->eeprom
+ * Load the EEPROM contents from adapter into priv->eeprom
*
* NOTE: This routine uses the non-debug IO access functions.
*/
int iwl3945_eeprom_init(struct iwl3945_priv *priv)
{
- u16 *e = (u16 *)&priv->eeprom;
+ __le16 *e = (__le16 *)&priv->eeprom;
u32 gp = iwl3945_read32(priv, CSR_EEPROM_GP);
u32 r;
int sz = sizeof(priv->eeprom);
return -ENOENT;
}
+ /* Make sure driver (instead of uCode) is allowed to read EEPROM */
rc = iwl3945_eeprom_acquire_semaphore(priv);
if (rc < 0) {
IWL_ERROR("Failed to acquire EEPROM semaphore.\n");
IWL_ERROR("Time out reading EEPROM[%d]", addr);
return -ETIMEDOUT;
}
- e[addr / 2] = le16_to_cpu(r >> 16);
+ e[addr / 2] = cpu_to_le16(r >> 16);
}
return 0;
static int iwl3945_set_mode(struct iwl3945_priv *priv, int mode)
{
- if (!iwl3945_is_ready_rf(priv))
- return -EAGAIN;
-
if (mode == IEEE80211_IF_TYPE_IBSS) {
const struct iwl3945_channel_info *ch_info;
}
}
- cancel_delayed_work(&priv->scan_check);
- if (iwl3945_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;
- }
-
priv->iw_mode = mode;
iwl3945_connection_init_rx_config(priv);
iwl3945_clear_stations_table(priv);
+ /* dont commit rxon if rf-kill is on*/
+ if (!iwl3945_is_ready_rf(priv))
+ return -EAGAIN;
+
+ cancel_delayed_work(&priv->scan_check);
+ if (iwl3945_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;
+ }
+
iwl3945_commit_rxon(priv);
return 0;
cmd->cmd.tx.next_frame_len = 0;
}
+/**
+ * iwl3945_get_sta_id - Find station's index within station table
+ */
static int iwl3945_get_sta_id(struct iwl3945_priv *priv, struct ieee80211_hdr *hdr)
{
int sta_id;
u16 fc = le16_to_cpu(hdr->frame_control);
- /* If this frame is broadcast or not data then use the broadcast
- * station id */
+ /* 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_setting.bcast_sta_id;
switch (priv->iw_mode) {
- /* If this frame is part of a BSS network (we're a station), then
- * we use the AP's station id */
+ /* 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;
return sta_id;
return priv->hw_setting.bcast_sta_id;
- /* If this frame is part of a IBSS network, then we use the
- * target specific station 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: {
DECLARE_MAC_BUF(mac);
+ /* Create new station table entry */
sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
if (sta_id != IWL_INVALID_STATION)
return sta_id;
goto drop_unlock;
}
- if (!priv->interface_id) {
- IWL_DEBUG_DROP("Dropping - !priv->interface_id\n");
+ if (!priv->vif) {
+ IWL_DEBUG_DROP("Dropping - !priv->vif\n");
goto drop_unlock;
}
IWL_DEBUG_TX("Sending REASSOC frame\n");
#endif
- if (!iwl3945_is_associated(priv) &&
+ /* drop all data frame if we are not associated */
+ if (!iwl3945_is_associated(priv) && !priv->assoc_id &&
((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA)) {
IWL_DEBUG_DROP("Dropping - !iwl3945_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 = iwl3945_get_sta_id(priv, hdr);
if (sta_id == IWL_INVALID_STATION) {
DECLARE_MAC_BUF(mac);
__constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
seq_number += 0x10;
}
+
+ /* 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 iwl3945_tx_info));
txq->txb[q->write_ptr].skb[0] = skb;
memcpy(&(txq->txb[q->write_ptr].status.control),
ctl, sizeof(struct ieee80211_tx_control));
+
+ /* Init 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 frags header */
+
+ /* Copy MAC header from skb into command buffer */
memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
- /* hdr = (struct ieee80211_hdr *)out_cmd->cmd.tx.hdr; */
+ /*
+ * 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_setting.tx_cmd_len +
sizeof(struct iwl3945_cmd_header) + hdr_len;
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 iwl3945_cmd) * idx +
offsetof(struct iwl3945_cmd, hdr);
+ /* Add buffer containing Tx command and MAC(!) header to TFD's
+ * first entry */
iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
if (!(ctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT))
iwl3945_build_tx_cmd_hwcrypto(priv, ctl, out_cmd, skb, 0);
- /* 802.11 null functions have no payload... */
+ /* 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,
iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
}
- /* If there is no payload, then only one TFD is used */
if (!len)
+ /* If there is no payload, then we use only one Tx buffer */
*control_flags = TFD_CTL_COUNT_SET(1);
else
+ /* Else use 2 buffers.
+ * Tell 3945 about any padding after MAC header */
*control_flags = TFD_CTL_COUNT_SET(2) |
TFD_CTL_PAD_SET(U32_PAD(len));
+ /* Total # bytes to be transmitted */
len = (u16)skb->len;
out_cmd->cmd.tx.len = cpu_to_le16(len);
iwl3945_print_hex_dump(IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
ieee80211_get_hdrlen(fc));
+ /* Tell device the write index *just past* this latest filled TFD */
q->write_ptr = iwl3945_queue_inc_wrap(q->write_ptr, q->n_bd);
rc = iwl3945_tx_queue_update_write_ptr(priv, txq);
spin_unlock_irqrestore(&priv->lock, flags);
}
}
-void iwl3945_handle_data_packet_monitor(struct iwl3945_priv *priv,
- struct iwl3945_rx_mem_buffer *rxb,
- void *data, short len,
- struct ieee80211_rx_status *stats,
- u16 phy_flags)
-{
- struct iwl3945_rt_rx_hdr *iwl3945_rt;
-
- /* First cache any information we need before we overwrite
- * the information provided in the skb from the hardware */
- s8 signal = stats->ssi;
- s8 noise = 0;
- int rate = stats->rate;
- u64 tsf = stats->mactime;
- __le16 phy_flags_hw = cpu_to_le16(phy_flags);
-
- /* We received data from the HW, so stop the watchdog */
- if (len > IWL_RX_BUF_SIZE - sizeof(*iwl3945_rt)) {
- IWL_DEBUG_DROP("Dropping too large packet in monitor\n");
- return;
- }
-
- /* copy the frame data to write after where the radiotap header goes */
- iwl3945_rt = (void *)rxb->skb->data;
- memmove(iwl3945_rt->payload, data, len);
-
- iwl3945_rt->rt_hdr.it_version = PKTHDR_RADIOTAP_VERSION;
- iwl3945_rt->rt_hdr.it_pad = 0; /* always good to zero */
-
- /* total header + data */
- iwl3945_rt->rt_hdr.it_len = cpu_to_le16(sizeof(*iwl3945_rt));
-
- /* Set the size of the skb to the size of the frame */
- skb_put(rxb->skb, sizeof(*iwl3945_rt) + len);
-
- /* Big bitfield of all the fields we provide in radiotap */
- iwl3945_rt->rt_hdr.it_present =
- cpu_to_le32((1 << IEEE80211_RADIOTAP_TSFT) |
- (1 << IEEE80211_RADIOTAP_FLAGS) |
- (1 << IEEE80211_RADIOTAP_RATE) |
- (1 << IEEE80211_RADIOTAP_CHANNEL) |
- (1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL) |
- (1 << IEEE80211_RADIOTAP_DBM_ANTNOISE) |
- (1 << IEEE80211_RADIOTAP_ANTENNA));
-
- /* Zero the flags, we'll add to them as we go */
- iwl3945_rt->rt_flags = 0;
-
- iwl3945_rt->rt_tsf = cpu_to_le64(tsf);
-
- /* Convert to dBm */
- iwl3945_rt->rt_dbmsignal = signal;
- iwl3945_rt->rt_dbmnoise = noise;
-
- /* Convert the channel frequency and set the flags */
- iwl3945_rt->rt_channelMHz = cpu_to_le16(stats->freq);
- if (!(phy_flags_hw & RX_RES_PHY_FLAGS_BAND_24_MSK))
- iwl3945_rt->rt_chbitmask =
- cpu_to_le16((IEEE80211_CHAN_OFDM | IEEE80211_CHAN_5GHZ));
- else if (phy_flags_hw & RX_RES_PHY_FLAGS_MOD_CCK_MSK)
- iwl3945_rt->rt_chbitmask =
- cpu_to_le16((IEEE80211_CHAN_CCK | IEEE80211_CHAN_2GHZ));
- else /* 802.11g */
- iwl3945_rt->rt_chbitmask =
- cpu_to_le16((IEEE80211_CHAN_OFDM | IEEE80211_CHAN_2GHZ));
-
- rate = iwl3945_rate_index_from_plcp(rate);
- if (rate == -1)
- iwl3945_rt->rt_rate = 0;
- else
- iwl3945_rt->rt_rate = iwl3945_rates[rate].ieee;
-
- /* antenna number */
- iwl3945_rt->rt_antenna =
- le16_to_cpu(phy_flags_hw & RX_RES_PHY_FLAGS_ANTENNA_MSK) >> 4;
-
- /* set the preamble flag if we have it */
- if (phy_flags_hw & RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK)
- iwl3945_rt->rt_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
-
- IWL_DEBUG_RX("Rx packet of %d bytes.\n", rxb->skb->len);
-
- stats->flag |= RX_FLAG_RADIOTAP;
- ieee80211_rx_irqsafe(priv->hw, rxb->skb, stats);
- rxb->skb = NULL;
-}
-
-
#define IWL_PACKET_RETRY_TIME HZ
int iwl3945_is_duplicate_packet(struct iwl3945_priv *priv, struct ieee80211_hdr *header)
}
/**
- * iwl3945_tx_queue_reclaim - Reclaim Tx queue entries no more used by NIC.
+ * iwl3945_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 Tx queue.
+ * 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.
*/
static int iwl3945_tx_queue_reclaim(struct iwl3945_priv *priv, int txq_id, int index)
{
* Generic RX handler implementations
*
******************************************************************************/
+/**
+ * iwl3945_rx_reply_tx - Handle Tx response
+ */
static void iwl3945_rx_reply_tx(struct iwl3945_priv *priv,
struct iwl3945_rx_mem_buffer *rxb)
{
struct sk_buff *beacon;
/* Pull updated AP beacon from mac80211. will fail if not in AP mode */
- beacon = ieee80211_beacon_get(priv->hw, priv->interface_id, NULL);
+ beacon = ieee80211_beacon_get(priv->hw, priv->vif, NULL);
if (!beacon) {
IWL_ERROR("update beacon failed\n");
(priv->last_scan_jiffies, jiffies)));
priv->last_scan_jiffies = jiffies;
+ priv->next_scan_jiffies = 0;
}
/* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
}
priv->last_scan_jiffies = jiffies;
+ priv->next_scan_jiffies = 0;
IWL_DEBUG_INFO("Setting scan to off\n");
clear_bit(STATUS_SCANNING, &priv->status);
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 = iwl3945_read32(priv, CSR_UCODE_DRV_GP1);
if (rc)
goto exit_unlock;
+ /* Device expects a multiple of 8 */
iwl3945_write_direct32(priv, FH_RSCSR_CHNL0_WPTR,
q->write & ~0x7);
iwl3945_release_nic_access(priv);
+
+ /* Else device is assumed to be awake */
} else
+ /* Device expects a multiple of 8 */
iwl3945_write32(priv, FH_RSCSR_CHNL0_WPTR, q->write & ~0x7);
spin_lock_irqsave(&rxq->lock, flags);
write = rxq->write & ~0x7;
while ((iwl3945_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 iwl3945_rx_mem_buffer, list);
list_del(element);
+
+ /* Point to Rx buffer via next RBD in circular buffer */
rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->dma_addr);
rxq->queue[rxq->write] = rxb;
rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
queue_work(priv->workqueue, &priv->rx_replenish);
- /* If we've added more space for the firmware to place data, tell it */
+ /* 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);
* Also restock the Rx queue via iwl3945_rx_queue_restock.
* This is called as a scheduled work item (except for during initialization)
*/
-void iwl3945_rx_replenish(void *data)
+static void iwl3945_rx_allocate(struct iwl3945_priv *priv)
{
- struct iwl3945_priv *priv = data;
struct iwl3945_rx_queue *rxq = &priv->rxq;
struct list_head *element;
struct iwl3945_rx_mem_buffer *rxb;
while (!list_empty(&rxq->rx_used)) {
element = rxq->rx_used.next;
rxb = list_entry(element, struct iwl3945_rx_mem_buffer, list);
+
+ /* Alloc a new receive buffer */
rxb->skb =
alloc_skb(IWL_RX_BUF_SIZE, __GFP_NOWARN | GFP_ATOMIC);
if (!rxb->skb) {
* more buffers it will schedule replenish */
break;
}
+
+ /* If radiotap head is required, reserve some headroom here.
+ * The physical head count is a variable rx_stats->phy_count.
+ * We reserve 4 bytes here. Plus these extra bytes, the
+ * headroom of the physical head should be enough for the
+ * radiotap head that iwl3945 supported. See iwl3945_rt.
+ */
+ skb_reserve(rxb->skb, 4);
+
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,
IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
rxq->free_count++;
}
spin_unlock_irqrestore(&rxq->lock, flags);
+}
+
+/*
+ * this should be called while priv->lock is locked
+ */
+static void __iwl3945_rx_replenish(void *data)
+{
+ struct iwl3945_priv *priv = data;
+
+ iwl3945_rx_allocate(priv);
+ iwl3945_rx_queue_restock(priv);
+}
+
+
+void iwl3945_rx_replenish(void *data)
+{
+ struct iwl3945_priv *priv = data;
+ unsigned long flags;
+
+ iwl3945_rx_allocate(priv);
spin_lock_irqsave(&priv->lock, flags);
iwl3945_rx_queue_restock(priv);
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;
u32 r, i;
int reclaim;
unsigned long flags;
+ u8 fill_rx = 0;
+ u32 count = 0;
+ /* uCode's read index (stored in shared DRAM) indicates the last Rx
+ * buffer that the driver may process (last buffer filled by ucode). */
r = iwl3945_hw_get_rx_read(priv);
i = rxq->read;
+ if (iwl3945_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
+ fill_rx = 1;
/* 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);
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 won't assert. */
+ if (fill_rx) {
+ count++;
+ if (count >= 8) {
+ priv->rxq.read = i;
+ __iwl3945_rx_replenish(priv);
+ count = 0;
+ }
+ }
}
/* Backtrack one entry */
iwl3945_rx_queue_restock(priv);
}
+/**
+ * iwl3945_tx_queue_update_write_ptr - Send new write index to hardware
+ */
static int iwl3945_tx_queue_update_write_ptr(struct iwl3945_priv *priv,
struct iwl3945_tx_queue *txq)
{
}
}
+/**
+ * iwl3945_get_channel_info - Find driver's private channel info
+ *
+ * Based on band and channel number.
+ */
const struct iwl3945_channel_info *iwl3945_get_channel_info(const struct iwl3945_priv *priv,
int phymode, u16 channel)
{
#define CHECK_AND_PRINT(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \
? # x " " : "")
+/**
+ * iwl3945_init_channel_map - Set up driver's info for all possible channels
+ */
static int iwl3945_init_channel_map(struct iwl3945_priv *priv)
{
int eeprom_ch_count = 0;
}
}
+ /* Set up txpower settings in driver for all channels */
if (iwl3945_txpower_set_from_eeprom(priv))
return -EIO;
}
iwl3945_init_geos(priv);
+ iwl3945_reset_channel_flag(priv);
if (iwl3945_is_rfkill(priv))
return;
- if (!priv->mac80211_registered) {
- /* Unlock so any user space entry points can call back into
- * the driver without a deadlock... */
- mutex_unlock(&priv->mutex);
- iwl3945_rate_control_register(priv->hw);
- rc = ieee80211_register_hw(priv->hw);
- priv->hw->conf.beacon_int = 100;
- mutex_lock(&priv->mutex);
-
- if (rc) {
- iwl3945_rate_control_unregister(priv->hw);
- IWL_ERROR("Failed to register network "
- "device (error %d)\n", rc);
- return;
- }
-
- priv->mac80211_registered = 1;
-
- iwl3945_reset_channel_flag(priv);
- } else
- ieee80211_start_queues(priv->hw);
+ ieee80211_start_queues(priv->hw);
priv->active_rate = priv->rates_mask;
priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
iwl3945_reg_txpower_periodic(priv);
IWL_DEBUG_INFO("ALIVE processing complete.\n");
+ wake_up_interruptible(&priv->wait_command_queue);
if (priv->error_recovering)
iwl3945_error_recovery(priv);
static int __iwl3945_up(struct iwl3945_priv *priv)
{
- DECLARE_MAC_BUF(mac);
int rc, i;
if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
IWL_WARNING("Radio disabled by SW RF kill (module "
"parameter)\n");
- return 0;
+ return -ENODEV;
+ }
+
+ /* If platform's RF_KILL switch is NOT set to KILL */
+ if (iwl3945_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_WARNING("Radio disabled by HW RF Kill switch\n");
+ return -ENODEV;
+ }
}
if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
* 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);
+ 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++) {
/* start card; "initialize" will load runtime ucode */
iwl3945_nic_start(priv);
- /* MAC Address location in EEPROM is same for 3945/4965 */
- get_eeprom_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);
-
IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
return 0;
mutex_unlock(&priv->mutex);
}
+#define IWL_DELAY_NEXT_SCAN (HZ*2)
+
static void iwl3945_bg_post_associate(struct work_struct *data)
{
struct iwl3945_priv *priv = container_of(data, struct iwl3945_priv,
mutex_lock(&priv->mutex);
- if (!priv->interface_id || !priv->is_open) {
+ if (!priv->vif || !priv->is_open) {
mutex_unlock(&priv->mutex);
return;
}
#ifdef CONFIG_IWL3945_QOS
iwl3945_activate_qos(priv, 0);
#endif /* CONFIG_IWL3945_QOS */
+ /* we have just associated, don't start scan too early */
+ priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
mutex_unlock(&priv->mutex);
}
mutex_unlock(&priv->mutex);
}
+static int iwl3945_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
+
static void iwl3945_bg_scan_completed(struct work_struct *work)
{
struct iwl3945_priv *priv =
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
return;
+ if (test_bit(STATUS_CONF_PENDING, &priv->status))
+ iwl3945_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
+
ieee80211_scan_completed(priv->hw);
/* Since setting the TXPOWER may have been deferred while
*
*****************************************************************************/
+#define UCODE_READY_TIMEOUT (2 * HZ)
+
static int iwl3945_mac_start(struct ieee80211_hw *hw)
{
struct iwl3945_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, iwl3945_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);
- priv->is_open = 1;
+ memset(&priv->staging_rxon, 0, sizeof(struct iwl3945_rxon_cmd));
+ /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
+ * ucode filename and max sizes are card-specific. */
- if (!iwl3945_is_rfkill(priv))
- ieee80211_start_queues(priv->hw);
+ if (!priv->ucode_code.len) {
+ ret = iwl3945_read_ucode(priv);
+ if (ret) {
+ IWL_ERROR("Could not read microcode: %d\n", ret);
+ mutex_unlock(&priv->mutex);
+ goto out_release_irq;
+ }
+ }
+
+ ret = __iwl3945_up(priv);
mutex_unlock(&priv->mutex);
+
+ if (ret)
+ goto out_release_irq;
+
+ IWL_DEBUG_INFO("Start UP work.\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 iwl3945_mac_stop(struct ieee80211_hw *hw)
IWL_DEBUG_MAC80211("enter\n");
+ if (!priv->is_open) {
+ IWL_DEBUG_MAC80211("leave - skip\n");
+ return;
+ }
- mutex_lock(&priv->mutex);
- /* stop mac, cancel any scan request and clear
- * RXON_FILTER_ASSOC_MSK BIT
- */
priv->is_open = 0;
- iwl3945_scan_cancel_timeout(priv, 100);
- cancel_delayed_work(&priv->post_associate);
- priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
- iwl3945_commit_rxon(priv);
- mutex_unlock(&priv->mutex);
+
+ if (iwl3945_is_ready_rf(priv)) {
+ /* stop mac, cancel any scan request and clear
+ * RXON_FILTER_ASSOC_MSK BIT
+ */
+ mutex_lock(&priv->mutex);
+ iwl3945_scan_cancel_timeout(priv, 100);
+ cancel_delayed_work(&priv->post_associate);
+ mutex_unlock(&priv->mutex);
+ }
+
+ iwl3945_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");
}
unsigned long flags;
DECLARE_MAC_BUF(mac);
- IWL_DEBUG_MAC80211("enter: id %d, type %d\n", conf->if_id, conf->type);
+ IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
- if (priv->interface_id) {
- IWL_DEBUG_MAC80211("leave - interface_id != 0\n");
+ if (priv->vif) {
+ IWL_DEBUG_MAC80211("leave - vif != NULL\n");
return -EOPNOTSUPP;
}
spin_lock_irqsave(&priv->lock, flags);
- priv->interface_id = conf->if_id;
+ priv->vif = conf->vif;
spin_unlock_irqrestore(&priv->lock, flags);
memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
}
- iwl3945_set_mode(priv, conf->type);
+ if (iwl3945_is_ready(priv))
+ iwl3945_set_mode(priv, conf->type);
- IWL_DEBUG_MAC80211("leave\n");
mutex_unlock(&priv->mutex);
+ IWL_DEBUG_MAC80211("leave\n");
return 0;
}
struct iwl3945_priv *priv = hw->priv;
const struct iwl3945_channel_info *ch_info;
unsigned long flags;
+ int ret = 0;
mutex_lock(&priv->mutex);
IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel);
+ priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
+
if (!iwl3945_is_ready(priv)) {
IWL_DEBUG_MAC80211("leave - not ready\n");
- mutex_unlock(&priv->mutex);
- return -EIO;
+ ret = -EIO;
+ goto out;
}
- /* TODO: Figure out how to get ieee80211_local->sta_scanning w/ only
- * what is exposed through include/ declarations */
if (unlikely(!iwl3945_param_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;
}
conf->channel, conf->phymode);
IWL_DEBUG_MAC80211("leave - invalid channel\n");
spin_unlock_irqrestore(&priv->lock, flags);
- mutex_unlock(&priv->mutex);
- return -EINVAL;
+ ret = -EINVAL;
+ goto out;
}
iwl3945_set_rxon_channel(priv, conf->phymode, conf->channel);
#ifdef IEEE80211_CONF_CHANNEL_SWITCH
if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
iwl3945_hw_channel_switch(priv, conf->channel);
- mutex_unlock(&priv->mutex);
- return 0;
+ goto out;
}
#endif
if (!conf->radio_enabled) {
IWL_DEBUG_MAC80211("leave - radio disabled\n");
- mutex_unlock(&priv->mutex);
- return 0;
+ goto out;
}
if (iwl3945_is_rfkill(priv)) {
IWL_DEBUG_MAC80211("leave - RF kill\n");
- mutex_unlock(&priv->mutex);
- return -EIO;
+ ret = -EIO;
+ goto out;
}
iwl3945_set_rate(priv);
IWL_DEBUG_MAC80211("leave\n");
+out:
+ clear_bit(STATUS_CONF_PENDING, &priv->status);
mutex_unlock(&priv->mutex);
-
- return 0;
+ return ret;
}
static void iwl3945_config_ap(struct iwl3945_priv *priv)
* clear sta table, add BCAST sta... */
}
-static int iwl3945_mac_config_interface(struct ieee80211_hw *hw, int if_id,
+static int iwl3945_mac_config_interface(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
struct ieee80211_if_conf *conf)
{
struct iwl3945_priv *priv = hw->priv;
return 0;
}
+ if (!iwl3945_is_alive(priv))
+ return -EAGAIN;
+
mutex_lock(&priv->mutex);
- IWL_DEBUG_MAC80211("enter: interface id %d\n", if_id);
if (conf->bssid)
IWL_DEBUG_MAC80211("bssid: %s\n",
print_mac(mac, conf->bssid));
return 0;
}
- if (priv->interface_id != if_id) {
- IWL_DEBUG_MAC80211("leave - interface_id != if_id\n");
+ if (priv->vif != vif) {
+ IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
mutex_unlock(&priv->mutex);
return 0;
}
priv->ibss_beacon = conf->beacon;
}
+ if (iwl3945_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
iwl3945_commit_rxon(priv);
}
+ done:
spin_lock_irqsave(&priv->lock, flags);
if (!conf->ssid_len)
memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
mutex_lock(&priv->mutex);
- iwl3945_scan_cancel_timeout(priv, 100);
- cancel_delayed_work(&priv->post_associate);
- priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
- iwl3945_commit_rxon(priv);
-
- if (priv->interface_id == conf->if_id) {
- priv->interface_id = 0;
+ if (iwl3945_is_ready_rf(priv)) {
+ iwl3945_scan_cancel_timeout(priv, 100);
+ cancel_delayed_work(&priv->post_associate);
+ priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
+ iwl3945_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");
-
}
-#define IWL_DELAY_NEXT_SCAN (HZ*2)
static int iwl3945_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
{
int rc = 0;
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)) {
+ 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 ",
+ IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
iwl3945_escape_essid(ssid, len), (int)len);
priv->one_direct_scan = 1;
spin_unlock_irqrestore(&priv->lock, flags);
+ if (!iwl3945_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
*/
return;
}
- if (!iwl3945_is_ready_rf(priv)) {
- IWL_DEBUG_MAC80211("leave - not ready\n");
- mutex_unlock(&priv->mutex);
- return;
- }
-
priv->only_active_channel = 0;
iwl3945_set_rate(priv);
struct iwl3945_priv *priv;
struct ieee80211_hw *hw;
int i;
+ DECLARE_MAC_BUF(mac);
+ /* Disabling hardware scan means that mac80211 will perform scans
+ * "the hard way", rather than using device's scan. */
if (iwl3945_param_disable_hw_scan) {
IWL_DEBUG_INFO("Disabling hw_scan\n");
iwl3945_hw_ops.hw_scan = NULL;
priv->hw = hw;
priv->pci_dev = pdev;
+
+ /* Select antenna (may be helpful if only one antenna is connected) */
priv->antenna = (enum iwl3945_antenna)iwl3945_param_antenna;
#ifdef CONFIG_IWL3945_DEBUG
iwl3945_debug_level = iwl3945_param_debug;
/* Tell mac80211 our Tx characteristics */
hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE;
+ /* 4 EDCA QOS priorities */
hw->queues = 4;
spin_lock_init(&priv->lock);
pci_set_master(pdev);
+ /* Clear the driver's (not device's) station table */
iwl3945_clear_stations_table(priv);
priv->data_retry_limit = -1;
err = pci_request_regions(pdev, DRV_NAME);
if (err)
goto out_pci_disable_device;
+
/* 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);
+
priv->hw_base = pci_iomap(pdev, 0, 0);
if (!priv->hw_base) {
err = -ENODEV;
/* Initialize module parameter values here */
+ /* Disable radio (SW RF KILL) via parameter when loading driver */
if (iwl3945_param_disable) {
set_bit(STATUS_RF_KILL_SW, &priv->status);
IWL_DEBUG_INFO("Radio disabled.\n");
/* Device-specific setup */
if (iwl3945_hw_set_hw_setting(priv)) {
IWL_ERROR("failed to set hw settings\n");
- mutex_unlock(&priv->mutex);
goto out_iounmap;
}
iwl3945_disable_interrupts(priv);
- pci_enable_msi(pdev);
-
- err = request_irq(pdev->irq, iwl3945_isr, IRQF_SHARED, DRV_NAME, priv);
- if (err) {
- IWL_ERROR("Error allocating IRQ %d\n", pdev->irq);
- goto out_disable_msi;
- }
-
- mutex_lock(&priv->mutex);
-
err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group);
if (err) {
IWL_ERROR("failed to create sysfs device attributes\n");
- mutex_unlock(&priv->mutex);
goto out_release_irq;
}
- /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
- * ucode filename and max sizes are card-specific. */
- err = iwl3945_read_ucode(priv);
+ /* nic init */
+ iwl3945_set_bit(priv, CSR_GIO_CHICKEN_BITS,
+ CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
+
+ iwl3945_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
+ err = iwl3945_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_remove_sysfs;
+ }
+ /* Read the EEPROM */
+ err = iwl3945_eeprom_init(priv);
if (err) {
- IWL_ERROR("Could not read microcode: %d\n", err);
- mutex_unlock(&priv->mutex);
- goto out_pci_alloc;
+ IWL_ERROR("Unable to init EEPROM\n");
+ goto out_remove_sysfs;
}
+ /* MAC Address location in EEPROM same for 3945/4965 */
+ get_eeprom_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);
- mutex_unlock(&priv->mutex);
-
- IWL_DEBUG_INFO("Queueing UP work.\n");
+ iwl3945_rate_control_register(priv->hw);
+ err = ieee80211_register_hw(priv->hw);
+ if (err) {
+ IWL_ERROR("Failed to register network device (error %d)\n", err);
+ goto out_remove_sysfs;
+ }
- queue_work(priv->workqueue, &priv->up);
+ priv->hw->conf.beacon_int = 100;
+ priv->mac80211_registered = 1;
+ pci_save_state(pdev);
+ pci_disable_device(pdev);
return 0;
- out_pci_alloc:
- iwl3945_dealloc_ucode_pci(priv);
-
+ out_remove_sysfs:
sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
out_release_irq:
- free_irq(pdev->irq, priv);
-
- out_disable_msi:
- pci_disable_msi(pdev);
destroy_workqueue(priv->workqueue);
priv->workqueue = NULL;
iwl3945_unset_hw_setting(priv);
destroy_workqueue(priv->workqueue);
priv->workqueue = NULL;
- free_irq(pdev->irq, priv);
- pci_disable_msi(pdev);
pci_iounmap(pdev, priv->hw_base);
pci_release_regions(pdev);
pci_disable_device(pdev);
{
struct iwl3945_priv *priv = pci_get_drvdata(pdev);
- set_bit(STATUS_IN_SUSPEND, &priv->status);
-
- /* Take down the device; powers it off, etc. */
- iwl3945_down(priv);
-
- if (priv->mac80211_registered)
- ieee80211_stop_queues(priv->hw);
+ if (priv->is_open) {
+ set_bit(STATUS_IN_SUSPEND, &priv->status);
+ iwl3945_mac_stop(priv->hw);
+ priv->is_open = 1;
+ }
- pci_save_state(pdev);
- pci_disable_device(pdev);
pci_set_power_state(pdev, PCI_D3hot);
return 0;
}
-static void iwl3945_resume(struct iwl3945_priv *priv)
-{
- unsigned long flags;
-
- /* The following it a temporary work around due to the
- * suspend / resume not fully initializing the NIC correctly.
- * Without all of the following, resume will not attempt to take
- * down the NIC (it shouldn't really need to) and will just try
- * and bring the NIC back up. However that fails during the
- * ucode verification process. This then causes iwl3945_down to be
- * called *after* iwl3945_hw_nic_init() has succeeded -- which
- * then lets the next init sequence succeed. So, we've
- * replicated all of that NIC init code here... */
-
- iwl3945_write32(priv, CSR_INT, 0xFFFFFFFF);
-
- iwl3945_hw_nic_init(priv);
-
- iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
- iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR,
- CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
- iwl3945_write32(priv, CSR_INT, 0xFFFFFFFF);
- iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
- iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
-
- /* tell the device to stop sending interrupts */
- iwl3945_disable_interrupts(priv);
-
- spin_lock_irqsave(&priv->lock, flags);
- iwl3945_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
-
- if (!iwl3945_grab_nic_access(priv)) {
- iwl3945_write_prph(priv, APMG_CLK_DIS_REG,
- APMG_CLK_VAL_DMA_CLK_RQT);
- iwl3945_release_nic_access(priv);
- }
- spin_unlock_irqrestore(&priv->lock, flags);
-
- udelay(5);
-
- iwl3945_hw_nic_reset(priv);
-
- /* Bring the device back up */
- clear_bit(STATUS_IN_SUSPEND, &priv->status);
- queue_work(priv->workqueue, &priv->up);
-}
-
static int iwl3945_pci_resume(struct pci_dev *pdev)
{
struct iwl3945_priv *priv = pci_get_drvdata(pdev);
- int err;
-
- printk(KERN_INFO "Coming out of suspend...\n");
pci_set_power_state(pdev, PCI_D0);
- err = pci_enable_device(pdev);
- pci_restore_state(pdev);
- /*
- * Suspend/Resume resets the PCI configuration space, so we have to
- * re-disable the RETRY_TIMEOUT register (0x41) to keep PCI Tx retries
- * from interfering with C3 CPU state. pci_restore_state won't help
- * here since it only restores the first 64 bytes pci config header.
- */
- pci_write_config_byte(pdev, 0x41, 0x00);
-
- iwl3945_resume(priv);
+ if (priv->is_open)
+ iwl3945_mac_start(priv->hw);
+ clear_bit(STATUS_IN_SUSPEND, &priv->status);
return 0;
}
projects / deliverable / linux.git / blobdiff