/*
- * drivers/net/wireless/mwl8k.c driver for Marvell TOPDOG 802.11 Wireless cards
+ * drivers/net/wireless/mwl8k.c
+ * Driver for Marvell TOPDOG 802.11 Wireless cards
*
* Copyright (C) 2008 Marvell Semiconductor Inc.
*
/* Register definitions */
#define MWL8K_HIU_GEN_PTR 0x00000c10
-#define MWL8K_MODE_STA 0x0000005a
-#define MWL8K_MODE_AP 0x000000a5
+#define MWL8K_MODE_STA 0x0000005a
+#define MWL8K_MODE_AP 0x000000a5
#define MWL8K_HIU_INT_CODE 0x00000c14
-#define MWL8K_FWSTA_READY 0xf0f1f2f4
-#define MWL8K_FWAP_READY 0xf1f2f4a5
-#define MWL8K_INT_CODE_CMD_FINISHED 0x00000005
+#define MWL8K_FWSTA_READY 0xf0f1f2f4
+#define MWL8K_FWAP_READY 0xf1f2f4a5
+#define MWL8K_INT_CODE_CMD_FINISHED 0x00000005
#define MWL8K_HIU_SCRATCH 0x00000c40
/* Host->device communications */
#define MWL8K_HIU_H2A_INTERRUPT_MASK 0x00000c20
#define MWL8K_HIU_H2A_INTERRUPT_CLEAR_SEL 0x00000c24
#define MWL8K_HIU_H2A_INTERRUPT_STATUS_MASK 0x00000c28
-#define MWL8K_H2A_INT_DUMMY (1 << 20)
-#define MWL8K_H2A_INT_RESET (1 << 15)
-#define MWL8K_H2A_INT_DOORBELL (1 << 1)
-#define MWL8K_H2A_INT_PPA_READY (1 << 0)
+#define MWL8K_H2A_INT_DUMMY (1 << 20)
+#define MWL8K_H2A_INT_RESET (1 << 15)
+#define MWL8K_H2A_INT_DOORBELL (1 << 1)
+#define MWL8K_H2A_INT_PPA_READY (1 << 0)
/* Device->host communications */
#define MWL8K_HIU_A2H_INTERRUPT_EVENTS 0x00000c2c
#define MWL8K_HIU_A2H_INTERRUPT_MASK 0x00000c34
#define MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL 0x00000c38
#define MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK 0x00000c3c
-#define MWL8K_A2H_INT_DUMMY (1 << 20)
-#define MWL8K_A2H_INT_CHNL_SWITCHED (1 << 11)
-#define MWL8K_A2H_INT_QUEUE_EMPTY (1 << 10)
-#define MWL8K_A2H_INT_RADAR_DETECT (1 << 7)
-#define MWL8K_A2H_INT_RADIO_ON (1 << 6)
-#define MWL8K_A2H_INT_RADIO_OFF (1 << 5)
-#define MWL8K_A2H_INT_MAC_EVENT (1 << 3)
-#define MWL8K_A2H_INT_OPC_DONE (1 << 2)
-#define MWL8K_A2H_INT_RX_READY (1 << 1)
-#define MWL8K_A2H_INT_TX_DONE (1 << 0)
+#define MWL8K_A2H_INT_DUMMY (1 << 20)
+#define MWL8K_A2H_INT_CHNL_SWITCHED (1 << 11)
+#define MWL8K_A2H_INT_QUEUE_EMPTY (1 << 10)
+#define MWL8K_A2H_INT_RADAR_DETECT (1 << 7)
+#define MWL8K_A2H_INT_RADIO_ON (1 << 6)
+#define MWL8K_A2H_INT_RADIO_OFF (1 << 5)
+#define MWL8K_A2H_INT_MAC_EVENT (1 << 3)
+#define MWL8K_A2H_INT_OPC_DONE (1 << 2)
+#define MWL8K_A2H_INT_RX_READY (1 << 1)
+#define MWL8K_A2H_INT_TX_DONE (1 << 0)
#define MWL8K_A2H_EVENTS (MWL8K_A2H_INT_DUMMY | \
MWL8K_A2H_INT_CHNL_SWITCHED | \
struct sk_buff **rx_skb;
};
-struct mwl8k_skb {
- /*
- * The DMA engine requires a modification to the payload.
- * If the skbuff is shared/cloned, it needs to be unshared.
- * This method is used to ensure the stack always gets back
- * the skbuff it sent for transmission.
- */
- struct sk_buff *clone;
- struct sk_buff *skb;
-};
-
struct mwl8k_tx_queue {
/* hw transmits here */
int tx_head;
struct ieee80211_tx_queue_stats tx_stats;
struct mwl8k_tx_desc *tx_desc_area;
dma_addr_t tx_desc_dma;
- struct mwl8k_skb *tx_skb;
+ struct sk_buff **tx_skb;
};
/* Pointers to the firmware data and meta information about it. */
struct pci_dev *pdev;
u8 name[16];
- /* firmware access lock */
- spinlock_t fw_lock;
/* firmware files and meta data */
struct mwl8k_firmware fw;
u32 part_num;
+ /* firmware access */
+ struct mutex fw_mutex;
+ struct task_struct *fw_mutex_owner;
+ int fw_mutex_depth;
+ struct completion *tx_wait;
+ struct completion *hostcmd_wait;
+
/* lock held over TX and TX reap */
spinlock_t tx_lock;
struct ieee80211_channel channels[14];
struct ieee80211_rate rates[12];
- /* RF preamble: Short, Long or Auto */
- u8 radio_preamble;
- u8 radio_state;
-
- /* WMM MODE 1 for enabled; 0 for disabled */
- bool wmm_mode;
-
- /* Set if PHY config is in progress */
- bool inconfig;
+ bool radio_on;
+ bool radio_short_preamble;
+ bool wmm_enabled;
/* XXX need to convert this to handle multiple interfaces */
bool capture_beacon;
/* Work thread to serialize configuration requests */
struct workqueue_struct *config_wq;
- struct completion *hostcmd_wait;
- struct completion *tx_wait;
};
/* Per interface specific private data */
{ .bitrate = 540, .hw_value = 108, },
};
-/* Radio settings */
-#define MWL8K_RADIO_FORCE 0x2
-#define MWL8K_RADIO_ENABLE 0x1
-#define MWL8K_RADIO_DISABLE 0x0
-#define MWL8K_RADIO_AUTO_PREAMBLE 0x0005
-#define MWL8K_RADIO_SHORT_PREAMBLE 0x0003
-#define MWL8K_RADIO_LONG_PREAMBLE 0x0001
-
-/* WMM */
-#define MWL8K_WMM_ENABLE 1
-#define MWL8K_WMM_DISABLE 0
-
-#define MWL8K_RADIO_DEFAULT_PREAMBLE MWL8K_RADIO_LONG_PREAMBLE
-
-/* Slot time */
-
-/* Short Slot: 9us slot time */
-#define MWL8K_SHORT_SLOTTIME 1
-
-/* Long slot: 20us slot time */
-#define MWL8K_LONG_SLOTTIME 0
-
/* Set or get info from Firmware */
#define MWL8K_CMD_SET 0x0001
#define MWL8K_CMD_GET 0x0000
snprintf(buf, bufsize, "%s", #x);\
return buf;\
} while (0)
- switch (cmd & (~0x8000)) {
+ switch (cmd & ~0x8000) {
MWL8K_CMDNAME(CODE_DNLD);
MWL8K_CMDNAME(GET_HW_SPEC);
MWL8K_CMDNAME(MAC_MULTICAST_ADR);
{
void __iomem *regs = priv->regs;
dma_addr_t dma_addr;
- int rc;
int loops;
dma_addr = pci_map_single(priv->pdev, data, length, PCI_DMA_TODEVICE);
iowrite32(MWL8K_H2A_INT_DUMMY,
regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
- rc = -ETIMEDOUT;
loops = 1000;
do {
u32 int_code;
int_code = ioread32(regs + MWL8K_HIU_INT_CODE);
if (int_code == MWL8K_INT_CODE_CMD_FINISHED) {
iowrite32(0, regs + MWL8K_HIU_INT_CODE);
- rc = 0;
break;
}
pci_unmap_single(priv->pdev, dma_addr, length, PCI_DMA_TODEVICE);
- /*
- * Clear 'command done' interrupt bit.
- */
- loops = 1000;
- do {
- u32 status;
-
- status = ioread32(priv->regs +
- MWL8K_HIU_A2H_INTERRUPT_STATUS);
- if (status & MWL8K_A2H_INT_OPC_DONE) {
- iowrite32(~MWL8K_A2H_INT_OPC_DONE,
- priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
- ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
- break;
- }
-
- udelay(1);
- } while (--loops);
-
- return rc;
+ return loops ? 0 : -ETIMEDOUT;
}
static int mwl8k_load_fw_image(struct mwl8k_priv *priv,
} __attribute__((packed));
/* Routines to add/remove DMA header from skb. */
-static inline int mwl8k_remove_dma_header(struct sk_buff *skb)
+static inline void mwl8k_remove_dma_header(struct sk_buff *skb)
{
- struct mwl8k_dma_data *tr = (struct mwl8k_dma_data *)(skb->data);
+ struct mwl8k_dma_data *tr = (struct mwl8k_dma_data *)skb->data;
void *dst, *src = &tr->wh;
- __le16 fc = tr->wh.frame_control;
- int hdrlen = ieee80211_hdrlen(fc);
+ int hdrlen = ieee80211_hdrlen(tr->wh.frame_control);
u16 space = sizeof(struct mwl8k_dma_data) - hdrlen;
dst = (void *)tr + space;
memmove(dst, src, hdrlen);
skb_pull(skb, space);
}
-
- return 0;
}
-static inline struct sk_buff *mwl8k_add_dma_header(struct sk_buff *skb)
+static inline void mwl8k_add_dma_header(struct sk_buff *skb)
{
struct ieee80211_hdr *wh;
u32 hdrlen, pktlen;
* This includes all crypto material including the MIC.
*/
tr->fwlen = cpu_to_le16(pktlen - hdrlen);
-
- return skb;
}
MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
skb_put(skb, le16_to_cpu(rx_desc->pkt_len));
- if (mwl8k_remove_dma_header(skb)) {
- dev_kfree_skb(skb);
- continue;
- }
+ mwl8k_remove_dma_header(skb);
wh = (struct ieee80211_hdr *)skb->data;
int size;
int i;
- memset(&txq->tx_stats, 0,
- sizeof(struct ieee80211_tx_queue_stats));
+ memset(&txq->tx_stats, 0, sizeof(struct ieee80211_tx_queue_stats));
txq->tx_stats.limit = MWL8K_TX_DESCS;
txq->tx_head = 0;
txq->tx_tail = 0;
};
static int mwl8k_scan_tx_ring(struct mwl8k_priv *priv,
- struct mwl8k_txq_info txinfo[],
- u32 num_queues)
+ struct mwl8k_txq_info *txinfo)
{
int count, desc, status;
struct mwl8k_tx_queue *txq;
struct mwl8k_tx_desc *tx_desc;
int ndescs = 0;
- memset(txinfo, 0, num_queues * sizeof(struct mwl8k_txq_info));
+ memset(txinfo, 0, MWL8K_TX_QUEUES * sizeof(struct mwl8k_txq_info));
+
spin_lock_bh(&priv->tx_lock);
- for (count = 0; count < num_queues; count++) {
+ for (count = 0; count < MWL8K_TX_QUEUES; count++) {
txq = priv->txq + count;
txinfo[count].len = txq->tx_stats.len;
txinfo[count].head = txq->tx_head;
return ndescs;
}
-static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw, u32 delay_ms)
+/*
+ * Must be called with hw->fw_mutex held and tx queues stopped.
+ */
+static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw)
{
- u32 count = 0;
- unsigned long timeout = 0;
struct mwl8k_priv *priv = hw->priv;
DECLARE_COMPLETION_ONSTACK(cmd_wait);
+ u32 count;
+ unsigned long timeout;
might_sleep();
- if (priv->tx_wait != NULL)
- printk(KERN_ERR "WARNING Previous TXWaitEmpty instance\n");
-
spin_lock_bh(&priv->tx_lock);
count = mwl8k_txq_busy(priv);
if (count) {
priv->tx_wait = &cmd_wait;
- if (priv->radio_state)
+ if (priv->radio_on)
mwl8k_tx_start(priv);
}
spin_unlock_bh(&priv->tx_lock);
if (count) {
- struct mwl8k_txq_info txinfo[4];
+ struct mwl8k_txq_info txinfo[MWL8K_TX_QUEUES];
int index;
int newcount;
timeout = wait_for_completion_timeout(&cmd_wait,
- msecs_to_jiffies(delay_ms));
+ msecs_to_jiffies(5000));
if (timeout)
return 0;
newcount = mwl8k_txq_busy(priv);
spin_unlock_bh(&priv->tx_lock);
- printk(KERN_ERR "%s(%u) TIMEDOUT:%ums Pend:%u-->%u\n",
- __func__, __LINE__, delay_ms, count, newcount);
+ printk(KERN_ERR "%s(%u) TIMEDOUT:5000ms Pend:%u-->%u\n",
+ __func__, __LINE__, count, newcount);
- mwl8k_scan_tx_ring(priv, txinfo, 4);
- for (index = 0 ; index < 4; index++)
+ mwl8k_scan_tx_ring(priv, txinfo);
+ for (index = 0; index < MWL8K_TX_QUEUES; index++)
printk(KERN_ERR
"TXQ:%u L:%u H:%u T:%u FW:%u DRV:%u U:%u\n",
index,
txinfo[index].fw_owned,
txinfo[index].drv_owned,
txinfo[index].unused);
+
return -ETIMEDOUT;
}
while (txq->tx_stats.len > 0) {
int tx;
- int rc;
struct mwl8k_tx_desc *tx_desc;
unsigned long addr;
- size_t size;
+ int size;
struct sk_buff *skb;
struct ieee80211_tx_info *info;
u32 status;
- rc = 0;
tx = txq->tx_head;
tx_desc = txq->tx_desc_area + tx;
priv->pending_tx_pkts--;
addr = le32_to_cpu(tx_desc->pkt_phys_addr);
- size = (u32)(le16_to_cpu(tx_desc->pkt_len));
- skb = txq->tx_skb[tx].skb;
- txq->tx_skb[tx].skb = NULL;
+ size = le16_to_cpu(tx_desc->pkt_len);
+ skb = txq->tx_skb[tx];
+ txq->tx_skb[tx] = NULL;
BUG_ON(skb == NULL);
pci_unmap_single(priv->pdev, addr, size, PCI_DMA_TODEVICE);
- rc = mwl8k_remove_dma_header(skb);
+ mwl8k_remove_dma_header(skb);
/* Mark descriptor as unused */
tx_desc->pkt_phys_addr = 0;
tx_desc->pkt_len = 0;
- if (txq->tx_skb[tx].clone) {
- /* Replace with original skb
- * before returning to stack
- * as buffer has been cloned
- */
- dev_kfree_skb(skb);
- skb = txq->tx_skb[tx].clone;
- txq->tx_skb[tx].clone = NULL;
- }
-
- if (rc) {
- /* Something has gone wrong here.
- * Failed to remove DMA header.
- * Print error message and drop packet.
- */
- printk(KERN_ERR "%s: Error removing DMA header from "
- "tx skb 0x%p.\n", priv->name, skb);
-
- dev_kfree_skb(skb);
- continue;
- }
-
info = IEEE80211_SKB_CB(skb);
ieee80211_tx_info_clear_status(info);
-
- /* Convert firmware status stuff into tx_status */
- if (MWL8K_TXD_SUCCESS(status)) {
- /* Transmit OK */
+ if (MWL8K_TXD_SUCCESS(status))
info->flags |= IEEE80211_TX_STAT_ACK;
- }
ieee80211_tx_status_irqsafe(hw, skb);
- wake = !priv->inconfig && priv->radio_state;
+ wake = 1;
}
- if (wake)
+ if (wake && priv->radio_on && !mutex_is_locked(&priv->fw_mutex))
ieee80211_wake_queue(hw, index);
}
{
struct mwl8k_priv *priv = hw->priv;
struct ieee80211_tx_info *tx_info;
+ struct mwl8k_vif *mwl8k_vif;
struct ieee80211_hdr *wh;
struct mwl8k_tx_queue *txq;
struct mwl8k_tx_desc *tx;
- struct mwl8k_dma_data *tr;
- struct mwl8k_vif *mwl8k_vif;
- struct sk_buff *org_skb = skb;
dma_addr_t dma;
- u16 qos = 0;
- bool qosframe = false, ampduframe = false;
- bool mcframe = false, eapolframe = false;
- bool amsduframe = false;
- __le16 fc;
-
- txq = priv->txq + index;
- tx = txq->tx_desc_area + txq->tx_tail;
-
- BUG_ON(txq->tx_skb[txq->tx_tail].skb != NULL);
+ u32 txstatus;
+ u8 txdatarate;
+ u16 qos;
- /*
- * Append HW DMA header to start of packet. Drop packet if
- * there is not enough space or a failure to unshare/unclone
- * the skb.
- */
- skb = mwl8k_add_dma_header(skb);
+ wh = (struct ieee80211_hdr *)skb->data;
+ if (ieee80211_is_data_qos(wh->frame_control))
+ qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh)));
+ else
+ qos = 0;
- if (skb == NULL) {
- printk(KERN_DEBUG "%s: failed to prepend HW DMA "
- "header, dropping TX frame.\n", priv->name);
- dev_kfree_skb(org_skb);
- return NETDEV_TX_OK;
- }
+ mwl8k_add_dma_header(skb);
+ wh = &((struct mwl8k_dma_data *)skb->data)->wh;
tx_info = IEEE80211_SKB_CB(skb);
mwl8k_vif = MWL8K_VIF(tx_info->control.vif);
- tr = (struct mwl8k_dma_data *)skb->data;
- wh = &tr->wh;
- fc = wh->frame_control;
- qosframe = ieee80211_is_data_qos(fc);
- mcframe = is_multicast_ether_addr(wh->addr1);
- ampduframe = !!(tx_info->flags & IEEE80211_TX_CTL_AMPDU);
if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
u16 seqno = mwl8k_vif->seqno;
+
wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
wh->seq_ctrl |= cpu_to_le16(seqno << 4);
mwl8k_vif->seqno = seqno++ % 4096;
}
- if (qosframe)
- qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh)));
+ /* Setup firmware control bit fields for each frame type. */
+ txstatus = 0;
+ txdatarate = 0;
+ if (ieee80211_is_mgmt(wh->frame_control) ||
+ ieee80211_is_ctl(wh->frame_control)) {
+ txdatarate = 0;
+ qos = mwl8k_qos_setbit_eosp(qos);
+ /* Set Queue size to unspecified */
+ qos = mwl8k_qos_setbit_qlen(qos, 0xff);
+ } else if (ieee80211_is_data(wh->frame_control)) {
+ txdatarate = 1;
+ if (is_multicast_ether_addr(wh->addr1))
+ txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX;
+
+ /* Send pkt in an aggregate if AMPDU frame. */
+ if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)
+ qos = mwl8k_qos_setbit_ack(qos,
+ MWL8K_TXD_ACK_POLICY_BLOCKACK);
+ else
+ qos = mwl8k_qos_setbit_ack(qos,
+ MWL8K_TXD_ACK_POLICY_NORMAL);
+
+ if (qos & IEEE80211_QOS_CONTROL_A_MSDU_PRESENT)
+ qos = mwl8k_qos_setbit_amsdu(qos);
+ }
dma = pci_map_single(priv->pdev, skb->data,
skb->len, PCI_DMA_TODEVICE);
if (pci_dma_mapping_error(priv->pdev, dma)) {
printk(KERN_DEBUG "%s: failed to dma map skb, "
"dropping TX frame.\n", priv->name);
-
- if (org_skb != NULL)
- dev_kfree_skb(org_skb);
- if (skb != NULL)
- dev_kfree_skb(skb);
+ dev_kfree_skb(skb);
return NETDEV_TX_OK;
}
- /* Set desc header, cpu bit order. */
- tx->status = 0;
- tx->data_rate = 0;
- tx->tx_priority = index;
- tx->qos_control = 0;
- tx->rate_info = 0;
- tx->peer_id = mwl8k_vif->peer_id;
-
- amsduframe = !!(qos & IEEE80211_QOS_CONTROL_A_MSDU_PRESENT);
-
- /* Setup firmware control bit fields for each frame type. */
- if (ieee80211_is_mgmt(fc) || ieee80211_is_ctl(fc)) {
- tx->data_rate = 0;
- qos = mwl8k_qos_setbit_eosp(qos);
- /* Set Queue size to unspecified */
- qos = mwl8k_qos_setbit_qlen(qos, 0xff);
- } else if (ieee80211_is_data(fc)) {
- tx->data_rate = 1;
- if (mcframe)
- tx->status |= MWL8K_TXD_STATUS_MULTICAST_TX;
+ spin_lock_bh(&priv->tx_lock);
- /*
- * Tell firmware to not send EAPOL pkts in an
- * aggregate. Verify against mac80211 tx path. If
- * stack turns off AMPDU for an EAPOL frame this
- * check will be removed.
- */
- if (eapolframe) {
- qos = mwl8k_qos_setbit_ack(qos,
- MWL8K_TXD_ACK_POLICY_NORMAL);
- } else {
- /* Send pkt in an aggregate if AMPDU frame. */
- if (ampduframe)
- qos = mwl8k_qos_setbit_ack(qos,
- MWL8K_TXD_ACK_POLICY_BLOCKACK);
- else
- qos = mwl8k_qos_setbit_ack(qos,
- MWL8K_TXD_ACK_POLICY_NORMAL);
+ txq = priv->txq + index;
- if (amsduframe)
- qos = mwl8k_qos_setbit_amsdu(qos);
- }
- }
+ BUG_ON(txq->tx_skb[txq->tx_tail] != NULL);
+ txq->tx_skb[txq->tx_tail] = skb;
- /* Convert to little endian */
+ tx = txq->tx_desc_area + txq->tx_tail;
+ tx->data_rate = txdatarate;
+ tx->tx_priority = index;
tx->qos_control = cpu_to_le16(qos);
- tx->status = cpu_to_le32(tx->status);
tx->pkt_phys_addr = cpu_to_le32(dma);
tx->pkt_len = cpu_to_le16(skb->len);
-
- txq->tx_skb[txq->tx_tail].skb = skb;
- txq->tx_skb[txq->tx_tail].clone =
- skb == org_skb ? NULL : org_skb;
-
- spin_lock_bh(&priv->tx_lock);
-
- tx->status = cpu_to_le32(MWL8K_TXD_STATUS_OK |
- MWL8K_TXD_STATUS_FW_OWNED);
+ tx->rate_info = 0;
+ tx->peer_id = mwl8k_vif->peer_id;
wmb();
+ tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);
+
+ txq->tx_stats.count++;
txq->tx_stats.len++;
priv->pending_tx_pkts++;
- txq->tx_stats.count++;
- txq->tx_tail++;
+ txq->tx_tail++;
if (txq->tx_tail == MWL8K_TX_DESCS)
txq->tx_tail = 0;
+
if (txq->tx_head == txq->tx_tail)
ieee80211_stop_queue(hw, index);
- if (priv->inconfig) {
- /*
- * Silently queue packet when we are in the middle of
- * a config cycle. Notify firmware only if we are
- * waiting for TXQs to empty. If a packet is sent
- * before .config() is complete, perhaps it is better
- * to drop the packet, as the channel is being changed
- * and the packet will end up on the wrong channel.
- */
- printk(KERN_ERR "%s(): WARNING TX activity while "
- "in config\n", __func__);
-
- if (priv->tx_wait != NULL)
- mwl8k_tx_start(priv);
- } else
- mwl8k_tx_start(priv);
+ mwl8k_tx_start(priv);
spin_unlock_bh(&priv->tx_lock);
}
+/*
+ * Firmware access.
+ *
+ * We have the following requirements for issuing firmware commands:
+ * - Some commands require that the packet transmit path is idle when
+ * the command is issued. (For simplicity, we'll just quiesce the
+ * transmit path for every command.)
+ * - There are certain sequences of commands that need to be issued to
+ * the hardware sequentially, with no other intervening commands.
+ *
+ * This leads to an implementation of a "firmware lock" as a mutex that
+ * can be taken recursively, and which is taken by both the low-level
+ * command submission function (mwl8k_post_cmd) as well as any users of
+ * that function that require issuing of an atomic sequence of commands,
+ * and quiesces the transmit path whenever it's taken.
+ */
+static int mwl8k_fw_lock(struct ieee80211_hw *hw)
+{
+ struct mwl8k_priv *priv = hw->priv;
+
+ if (priv->fw_mutex_owner != current) {
+ int rc;
+
+ mutex_lock(&priv->fw_mutex);
+ ieee80211_stop_queues(hw);
+
+ rc = mwl8k_tx_wait_empty(hw);
+ if (rc) {
+ ieee80211_wake_queues(hw);
+ mutex_unlock(&priv->fw_mutex);
+
+ return rc;
+ }
+
+ priv->fw_mutex_owner = current;
+ }
+
+ priv->fw_mutex_depth++;
+
+ return 0;
+}
+
+static void mwl8k_fw_unlock(struct ieee80211_hw *hw)
+{
+ struct mwl8k_priv *priv = hw->priv;
+
+ if (!--priv->fw_mutex_depth) {
+ ieee80211_wake_queues(hw);
+ priv->fw_mutex_owner = NULL;
+ mutex_unlock(&priv->fw_mutex);
+ }
+}
+
+
/*
* Command processing.
*/
dma_addr_t dma_addr;
unsigned int dma_size;
int rc;
- u16 __iomem *result;
unsigned long timeout = 0;
u8 buf[32];
if (pci_dma_mapping_error(priv->pdev, dma_addr))
return -ENOMEM;
- if (priv->hostcmd_wait != NULL)
- printk(KERN_ERR "WARNING host command in progress\n");
+ rc = mwl8k_fw_lock(hw);
+ if (rc)
+ return rc;
- spin_lock_irq(&priv->fw_lock);
priv->hostcmd_wait = &cmd_wait;
iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
iowrite32(MWL8K_H2A_INT_DOORBELL,
regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
iowrite32(MWL8K_H2A_INT_DUMMY,
regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
- spin_unlock_irq(&priv->fw_lock);
timeout = wait_for_completion_timeout(&cmd_wait,
msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS));
+ priv->hostcmd_wait = NULL;
+
+ mwl8k_fw_unlock(hw);
+
pci_unmap_single(priv->pdev, dma_addr, dma_size,
PCI_DMA_BIDIRECTIONAL);
- result = &cmd->result;
if (!timeout) {
- spin_lock_irq(&priv->fw_lock);
- priv->hostcmd_wait = NULL;
- spin_unlock_irq(&priv->fw_lock);
printk(KERN_ERR "%s: Command %s timeout after %u ms\n",
priv->name,
mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
MWL8K_CMD_TIMEOUT_MS);
rc = -ETIMEDOUT;
} else {
- rc = *result ? -EINVAL : 0;
+ rc = cmd->result ? -EINVAL : 0;
if (rc)
printk(KERN_ERR "%s: Command %s error 0x%x\n",
priv->name,
mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
- *result);
+ cmd->result);
}
return rc;
struct mwl8k_cmd_pkt header;
__le16 action;
__le16 numaddr;
- __u8 addr[1][ETH_ALEN];
+ __u8 addr[0][ETH_ALEN];
};
#define MWL8K_ENABLE_RX_MULTICAST 0x000F
-static int mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw,
- int mc_count,
- struct dev_addr_list *mclist)
+
+static struct mwl8k_cmd_pkt *
+__mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw,
+ int mc_count, struct dev_addr_list *mclist)
{
+ struct mwl8k_priv *priv = hw->priv;
struct mwl8k_cmd_mac_multicast_adr *cmd;
- int index = 0;
- int rc;
- int size = sizeof(*cmd) + ((mc_count - 1) * ETH_ALEN);
- cmd = kzalloc(size, GFP_KERNEL);
+ int size;
+ int i;
+
+ if (mc_count > priv->num_mcaddrs)
+ mc_count = priv->num_mcaddrs;
+
+ size = sizeof(*cmd) + mc_count * ETH_ALEN;
+
+ cmd = kzalloc(size, GFP_ATOMIC);
if (cmd == NULL)
- return -ENOMEM;
+ return NULL;
cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR);
cmd->header.length = cpu_to_le16(size);
cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST);
cmd->numaddr = cpu_to_le16(mc_count);
- while ((index < mc_count) && mclist) {
+
+ for (i = 0; i < mc_count && mclist; i++) {
if (mclist->da_addrlen != ETH_ALEN) {
- rc = -EINVAL;
- goto mwl8k_cmd_mac_multicast_adr_exit;
+ kfree(cmd);
+ return NULL;
}
- memcpy(cmd->addr[index], mclist->da_addr, ETH_ALEN);
- index++;
+ memcpy(cmd->addr[i], mclist->da_addr, ETH_ALEN);
mclist = mclist->next;
}
- rc = mwl8k_post_cmd(hw, &cmd->header);
-
-mwl8k_cmd_mac_multicast_adr_exit:
- kfree(cmd);
- return rc;
+ return &cmd->header;
}
/*
__le16 radio_on;
} __attribute__((packed));
-static int mwl8k_cmd_802_11_radio_control(struct ieee80211_hw *hw, int enable)
+static int
+mwl8k_cmd_802_11_radio_control(struct ieee80211_hw *hw, bool enable, bool force)
{
struct mwl8k_priv *priv = hw->priv;
struct mwl8k_cmd_802_11_radio_control *cmd;
int rc;
- if (((enable & MWL8K_RADIO_ENABLE) == priv->radio_state) &&
- !(enable & MWL8K_RADIO_FORCE))
+ if (enable == priv->radio_on && !force)
return 0;
- enable &= MWL8K_RADIO_ENABLE;
-
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (cmd == NULL)
return -ENOMEM;
cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL);
cmd->header.length = cpu_to_le16(sizeof(*cmd));
cmd->action = cpu_to_le16(MWL8K_CMD_SET);
- cmd->control = cpu_to_le16(priv->radio_preamble);
+ cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1);
cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000);
rc = mwl8k_post_cmd(hw, &cmd->header);
kfree(cmd);
if (!rc)
- priv->radio_state = enable;
+ priv->radio_on = enable;
return rc;
}
+static int mwl8k_cmd_802_11_radio_disable(struct ieee80211_hw *hw)
+{
+ return mwl8k_cmd_802_11_radio_control(hw, 0, 0);
+}
+
+static int mwl8k_cmd_802_11_radio_enable(struct ieee80211_hw *hw)
+{
+ return mwl8k_cmd_802_11_radio_control(hw, 1, 0);
+}
+
static int
mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble)
{
return -EINVAL;
priv = hw->priv;
- priv->radio_preamble = (short_preamble ?
- MWL8K_RADIO_SHORT_PREAMBLE :
- MWL8K_RADIO_LONG_PREAMBLE);
+ priv->radio_short_preamble = short_preamble;
- return mwl8k_cmd_802_11_radio_control(hw,
- MWL8K_RADIO_ENABLE | MWL8K_RADIO_FORCE);
+ return mwl8k_cmd_802_11_radio_control(hw, 1, 1);
}
/*
} __attribute__((packed));
static int
-mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, __u8 mac[ETH_ALEN])
+mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, __u8 *mac)
{
struct mwl8k_cmd_set_post_scan *cmd;
int rc;
__u8 short_slot;
} __attribute__((packed));
-static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, int slot_time)
+static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time)
{
struct mwl8k_cmd_set_slot *cmd;
int rc;
cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT);
cmd->header.length = cpu_to_le16(sizeof(*cmd));
cmd->action = cpu_to_le16(MWL8K_CMD_SET);
- cmd->short_slot = slot_time == MWL8K_SHORT_SLOTTIME ? 1 : 0;
+ cmd->short_slot = short_slot_time;
rc = mwl8k_post_cmd(hw, &cmd->header);
kfree(cmd);
cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER);
cmd->header.length = cpu_to_le16(sizeof(*cmd));
- cmd->action = enable ? cpu_to_le32((u32)MWL8K_CMD_SET) : 0;
+ cmd->action = cpu_to_le32(!!enable);
rc = mwl8k_post_cmd(hw, &cmd->header);
kfree(cmd);
}
/*
- * CMD_SET_RATE_ADAPT_MODE.
+ * CMD_SET_RATEADAPT_MODE.
*/
struct mwl8k_cmd_set_rate_adapt_mode {
struct mwl8k_cmd_pkt header;
cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE);
cmd->header.length = cpu_to_le16(sizeof(*cmd));
- cmd->action = enable ? cpu_to_le16(MWL8K_CMD_SET) : 0;
+ cmd->action = cpu_to_le16(!!enable);
rc = mwl8k_post_cmd(hw, &cmd->header);
kfree(cmd);
if (!rc)
- priv->wmm_mode = enable;
+ priv->wmm_enabled = enable;
return rc;
}
__u8 aifs, __u16 txop)
{
struct mwl8k_cmd_set_edca_params *cmd;
- u32 log_cw_min, log_cw_max;
int rc;
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (cmd == NULL)
return -ENOMEM;
- log_cw_min = ilog2(cw_min+1);
- log_cw_max = ilog2(cw_max+1);
cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS);
cmd->header.length = cpu_to_le16(sizeof(*cmd));
-
cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL);
cmd->txop = cpu_to_le16(txop);
- cmd->log_cw_max = (u8)log_cw_max;
- cmd->log_cw_min = (u8)log_cw_min;
+ cmd->log_cw_max = (u8)ilog2(cw_max + 1);
+ cmd->log_cw_min = (u8)ilog2(cw_min + 1);
cmd->aifs = aifs;
cmd->txq = qnum;
cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN);
cmd->header.length = cpu_to_le16(sizeof(*cmd));
-
- if (dtim)
- cmd->sleep_interval = cpu_to_le32(dtim);
- else
- cmd->sleep_interval = cpu_to_le32(1);
+ cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1);
hdrlen = ieee80211_hdrlen(payload->frame_control);
"sent to firmware. Sz=%u MAX=%u\n", __func__,
payload_len, MWL8K_FJ_BEACON_MAXLEN);
- payload_len = payload_len > MWL8K_FJ_BEACON_MAXLEN ?
- MWL8K_FJ_BEACON_MAXLEN : payload_len;
+ if (payload_len > MWL8K_FJ_BEACON_MAXLEN)
+ payload_len = MWL8K_FJ_BEACON_MAXLEN;
if (payload && payload_len)
memcpy(cmd->beacon_data, &payload->u.beacon, payload_len);
peer_info->amsdu_enabled = 0;
rates = peer_info->legacy_rates;
- for (count = 0 ; count < mv_vif->legacy_nrates; count++)
+ for (count = 0; count < mv_vif->legacy_nrates; count++)
rates[count] = bitrates[count].hw_value;
rc = mwl8k_post_cmd(hw, &cmd->header);
memcpy(cmd->bssid, mv_vif->bssid, ETH_ALEN);
- prot_mode = MWL8K_FRAME_PROT_DISABLED;
-
if (info->use_cts_prot) {
prot_mode = MWL8K_FRAME_PROT_11G;
} else {
break;
}
}
-
cmd->protection_mode = cpu_to_le16(prot_mode);
for (count = 0; count < mv_vif->legacy_nrates; count++)
}
if (status & MWL8K_A2H_INT_OPC_DONE) {
- if (priv->hostcmd_wait != NULL) {
+ if (priv->hostcmd_wait != NULL)
complete(priv->hostcmd_wait);
- priv->hostcmd_wait = NULL;
- }
}
if (status & MWL8K_A2H_INT_QUEUE_EMPTY) {
- if (!priv->inconfig &&
- priv->radio_state &&
- mwl8k_txq_busy(priv))
- mwl8k_tx_start(priv);
+ if (!mutex_is_locked(&priv->fw_mutex) &&
+ priv->radio_on && mwl8k_txq_busy(priv))
+ mwl8k_tx_start(priv);
}
return IRQ_HANDLED;
/* Result code. */
int rc;
-
- /*
- * Optional field. Refer to explanation of MWL8K_WQ_XXX_XXX
- * flags for explanation. Defaults to MWL8K_WQ_DEFAULT_OPTIONS.
- */
- u32 options;
-
- /* Optional field. Defaults to MWL8K_CONFIG_TIMEOUT_MS. */
- unsigned long timeout_ms;
-
- /* Optional field. Defaults to MWL8K_WQ_TXWAIT_ATTEMPTS. */
- u32 txwait_attempts;
-
- /* Optional field. Defaults to MWL8K_TXWAIT_MS. */
- u32 tx_timeout_ms;
- u32 step;
};
-/* Flags controlling behavior of config queue requests */
-
-/* Caller spins while waiting for completion. */
-#define MWL8K_WQ_SPIN 0x00000001
-
-/* Wait for TX queues to empty before proceeding with configuration. */
-#define MWL8K_WQ_TX_WAIT_EMPTY 0x00000002
-
-/* Queue request and return immediately. */
-#define MWL8K_WQ_POST_REQUEST 0x00000004
-
-/*
- * Caller sleeps and waits for task complete notification.
- * Do not use in atomic context.
- */
-#define MWL8K_WQ_SLEEP 0x00000008
-
-/* Free work struct when task is done. */
-#define MWL8K_WQ_FREE_WORKSTRUCT 0x00000010
-
-/*
- * Config request is queued and returns to caller imediately. Use
- * this in atomic context. Work struct is freed by mwl8k_queue_work()
- * when this flag is set.
- */
-#define MWL8K_WQ_QUEUE_ONLY (MWL8K_WQ_POST_REQUEST | \
- MWL8K_WQ_FREE_WORKSTRUCT)
-
-/* Default work queue behavior is to sleep and wait for tx completion. */
-#define MWL8K_WQ_DEFAULT_OPTIONS (MWL8K_WQ_SLEEP | MWL8K_WQ_TX_WAIT_EMPTY)
-
-/*
- * Default config request timeout. Add adjustments to make sure the
- * config thread waits long enough for both tx wait and cmd wait before
- * timing out.
- */
-
-/* Time to wait for all TXQs to drain. TX Doorbell is pressed each time. */
-#define MWL8K_TXWAIT_TIMEOUT_MS 1000
-
-/* Default number of TX wait attempts. */
-#define MWL8K_WQ_TXWAIT_ATTEMPTS 4
-
-/* Total time to wait for TXQ to drain. */
-#define MWL8K_TXWAIT_MS (MWL8K_TXWAIT_TIMEOUT_MS * \
- MWL8K_WQ_TXWAIT_ATTEMPTS)
-
-/* Scheduling slop. */
-#define MWL8K_OS_SCHEDULE_OVERHEAD_MS 200
-
-#define MWL8K_CONFIG_TIMEOUT_MS (MWL8K_CMD_TIMEOUT_MS + \
- MWL8K_TXWAIT_MS + \
- MWL8K_OS_SCHEDULE_OVERHEAD_MS)
-
static void mwl8k_config_thread(struct work_struct *wt)
{
struct mwl8k_work_struct *worker = (struct mwl8k_work_struct *)wt;
struct ieee80211_hw *hw = worker->hw;
- struct mwl8k_priv *priv = hw->priv;
int rc = 0;
- spin_lock_irq(&priv->tx_lock);
- priv->inconfig = true;
- spin_unlock_irq(&priv->tx_lock);
-
- ieee80211_stop_queues(hw);
-
- /*
- * Wait for host queues to drain before doing PHY
- * reconfiguration. This avoids interrupting any in-flight
- * DMA transfers to the hardware.
- */
- if (worker->options & MWL8K_WQ_TX_WAIT_EMPTY) {
- u32 timeout;
- u32 time_remaining;
- u32 iter;
- u32 tx_wait_attempts = worker->txwait_attempts;
-
- time_remaining = worker->tx_timeout_ms;
- if (!tx_wait_attempts)
- tx_wait_attempts = 1;
-
- timeout = worker->tx_timeout_ms/tx_wait_attempts;
- if (!timeout)
- timeout = 1;
-
- iter = tx_wait_attempts;
- do {
- int wait_time;
-
- if (time_remaining > timeout) {
- time_remaining -= timeout;
- wait_time = timeout;
- } else
- wait_time = time_remaining;
-
- if (!wait_time)
- wait_time = 1;
-
- rc = mwl8k_tx_wait_empty(hw, wait_time);
- if (rc)
- printk(KERN_ERR "%s() txwait timeout=%ums "
- "Retry:%u/%u\n", __func__, timeout,
- tx_wait_attempts - iter + 1,
- tx_wait_attempts);
-
- } while (rc && --iter);
-
- rc = iter ? 0 : -ETIMEDOUT;
- }
- if (!rc)
+ rc = mwl8k_fw_lock(hw);
+ if (!rc) {
rc = worker->wfunc(wt);
-
- spin_lock_irq(&priv->tx_lock);
- priv->inconfig = false;
- if (priv->pending_tx_pkts && priv->radio_state)
- mwl8k_tx_start(priv);
- spin_unlock_irq(&priv->tx_lock);
- ieee80211_wake_queues(hw);
+ mwl8k_fw_unlock(hw);
+ }
worker->rc = rc;
- if (worker->options & MWL8K_WQ_SLEEP)
- complete(worker->cmd_wait);
-
- if (worker->options & MWL8K_WQ_FREE_WORKSTRUCT)
- kfree(wt);
+ complete(worker->cmd_wait);
}
static int mwl8k_queue_work(struct ieee80211_hw *hw,
struct mwl8k_work_struct *worker,
- struct workqueue_struct *wqueue,
int (*wfunc)(struct work_struct *w))
{
+ struct mwl8k_priv *priv = hw->priv;
unsigned long timeout = 0;
int rc = 0;
DECLARE_COMPLETION_ONSTACK(cmd_wait);
- if (!worker->timeout_ms)
- worker->timeout_ms = MWL8K_CONFIG_TIMEOUT_MS;
-
- if (!worker->options)
- worker->options = MWL8K_WQ_DEFAULT_OPTIONS;
-
- if (!worker->txwait_attempts)
- worker->txwait_attempts = MWL8K_WQ_TXWAIT_ATTEMPTS;
-
- if (!worker->tx_timeout_ms)
- worker->tx_timeout_ms = MWL8K_TXWAIT_MS;
-
worker->hw = hw;
worker->cmd_wait = &cmd_wait;
worker->rc = 1;
worker->wfunc = wfunc;
INIT_WORK(&worker->wt, mwl8k_config_thread);
- queue_work(wqueue, &worker->wt);
-
- if (worker->options & MWL8K_WQ_POST_REQUEST) {
- rc = 0;
- } else {
- if (worker->options & MWL8K_WQ_SPIN) {
- timeout = worker->timeout_ms;
- while (timeout && (worker->rc > 0)) {
- mdelay(1);
- timeout--;
- }
- } else if (worker->options & MWL8K_WQ_SLEEP)
- timeout = wait_for_completion_timeout(&cmd_wait,
- msecs_to_jiffies(worker->timeout_ms));
-
- if (timeout)
- rc = worker->rc;
- else {
- cancel_work_sync(&worker->wt);
- rc = -ETIMEDOUT;
- }
- }
-
- return rc;
-}
-
-struct mwl8k_start_worker {
- struct mwl8k_work_struct header;
-};
+ queue_work(priv->config_wq, &worker->wt);
-static int mwl8k_start_wt(struct work_struct *wt)
-{
- struct mwl8k_start_worker *worker = (struct mwl8k_start_worker *)wt;
- struct ieee80211_hw *hw = worker->header.hw;
- struct mwl8k_priv *priv = hw->priv;
- int rc = 0;
-
- if (priv->vif != NULL) {
- rc = -EIO;
- goto mwl8k_start_exit;
- }
-
- /* Turn on radio */
- if (mwl8k_cmd_802_11_radio_control(hw, MWL8K_RADIO_ENABLE)) {
- rc = -EIO;
- goto mwl8k_start_exit;
- }
-
- /* Purge TX/RX HW queues */
- if (mwl8k_cmd_set_pre_scan(hw)) {
- rc = -EIO;
- goto mwl8k_start_exit;
- }
-
- if (mwl8k_cmd_set_post_scan(hw, "\x00\x00\x00\x00\x00\x00")) {
- rc = -EIO;
- goto mwl8k_start_exit;
- }
-
- /* Enable firmware rate adaptation */
- if (mwl8k_cmd_setrateadaptmode(hw, 0)) {
- rc = -EIO;
- goto mwl8k_start_exit;
- }
+ timeout = wait_for_completion_timeout(&cmd_wait,
+ msecs_to_jiffies(10000));
- /* Disable WMM. WMM gets enabled when stack sends WMM parms */
- if (mwl8k_set_wmm(hw, MWL8K_WMM_DISABLE)) {
- rc = -EIO;
- goto mwl8k_start_exit;
+ if (timeout)
+ rc = worker->rc;
+ else {
+ cancel_work_sync(&worker->wt);
+ rc = -ETIMEDOUT;
}
- /* Disable sniffer mode */
- if (mwl8k_enable_sniffer(hw, 0))
- rc = -EIO;
-
-mwl8k_start_exit:
return rc;
}
static int mwl8k_start(struct ieee80211_hw *hw)
{
- struct mwl8k_start_worker *worker;
struct mwl8k_priv *priv = hw->priv;
int rc;
- /* Enable tx reclaim tasklet */
- tasklet_enable(&priv->tx_reclaim_task);
-
rc = request_irq(priv->pdev->irq, &mwl8k_interrupt,
IRQF_SHARED, MWL8K_NAME, hw);
if (rc) {
printk(KERN_ERR "%s: failed to register IRQ handler\n",
priv->name);
- rc = -EIO;
- goto mwl8k_start_disable_tasklet;
+ return -EIO;
}
+ /* Enable tx reclaim tasklet */
+ tasklet_enable(&priv->tx_reclaim_task);
+
/* Enable interrupts */
iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
- worker = kzalloc(sizeof(*worker), GFP_KERNEL);
- if (worker == NULL) {
- rc = -ENOMEM;
- goto mwl8k_start_disable_irq;
- }
-
- rc = mwl8k_queue_work(hw, &worker->header,
- priv->config_wq, mwl8k_start_wt);
- kfree(worker);
- if (!rc)
- return rc;
-
- if (rc == -ETIMEDOUT)
- printk(KERN_ERR "%s() timed out\n", __func__);
+ rc = mwl8k_fw_lock(hw);
+ if (!rc) {
+ rc = mwl8k_cmd_802_11_radio_enable(hw);
- rc = -EIO;
+ if (!rc)
+ rc = mwl8k_cmd_set_pre_scan(hw);
-mwl8k_start_disable_irq:
- spin_lock_irq(&priv->tx_lock);
- iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
- spin_unlock_irq(&priv->tx_lock);
- free_irq(priv->pdev->irq, hw);
+ if (!rc)
+ rc = mwl8k_cmd_set_post_scan(hw,
+ "\x00\x00\x00\x00\x00\x00");
-mwl8k_start_disable_tasklet:
- tasklet_disable(&priv->tx_reclaim_task);
+ if (!rc)
+ rc = mwl8k_cmd_setrateadaptmode(hw, 0);
- return rc;
-}
+ if (!rc)
+ rc = mwl8k_set_wmm(hw, 0);
-struct mwl8k_stop_worker {
- struct mwl8k_work_struct header;
-};
+ if (!rc)
+ rc = mwl8k_enable_sniffer(hw, 0);
-static int mwl8k_stop_wt(struct work_struct *wt)
-{
- struct mwl8k_stop_worker *worker = (struct mwl8k_stop_worker *)wt;
- struct ieee80211_hw *hw = worker->header.hw;
- int rc;
+ mwl8k_fw_unlock(hw);
+ }
- rc = mwl8k_cmd_802_11_radio_control(hw, MWL8K_RADIO_DISABLE);
+ if (rc) {
+ iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
+ free_irq(priv->pdev->irq, hw);
+ tasklet_disable(&priv->tx_reclaim_task);
+ }
return rc;
}
static void mwl8k_stop(struct ieee80211_hw *hw)
{
- int rc;
- struct mwl8k_stop_worker *worker;
struct mwl8k_priv *priv = hw->priv;
int i;
- if (priv->vif != NULL)
- return;
+ mwl8k_cmd_802_11_radio_disable(hw);
ieee80211_stop_queues(hw);
- worker = kzalloc(sizeof(*worker), GFP_KERNEL);
- if (worker == NULL)
- return;
-
- rc = mwl8k_queue_work(hw, &worker->header,
- priv->config_wq, mwl8k_stop_wt);
- kfree(worker);
- if (rc == -ETIMEDOUT)
- printk(KERN_ERR "%s() timed out\n", __func__);
-
/* Disable interrupts */
- spin_lock_irq(&priv->tx_lock);
iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
- spin_unlock_irq(&priv->tx_lock);
free_irq(priv->pdev->irq, hw);
/* Stop finalize join worker */
/*
* We only support managed interfaces for now.
*/
- if (conf->type != NL80211_IFTYPE_STATION &&
- conf->type != NL80211_IFTYPE_MONITOR)
+ if (conf->type != NL80211_IFTYPE_STATION)
return -EINVAL;
/* Clean out driver private area */
mwl8k_vif->priv = priv;
/* Setup initial PHY parameters */
- memcpy(mwl8k_vif->legacy_rates ,
+ memcpy(mwl8k_vif->legacy_rates,
priv->rates, sizeof(mwl8k_vif->legacy_rates));
mwl8k_vif->legacy_nrates = ARRAY_SIZE(priv->rates);
priv->vif = NULL;
}
-struct mwl8k_config_worker {
- struct mwl8k_work_struct header;
- u32 changed;
-};
-
-static int mwl8k_config_wt(struct work_struct *wt)
+static int mwl8k_config(struct ieee80211_hw *hw, u32 changed)
{
- struct mwl8k_config_worker *worker =
- (struct mwl8k_config_worker *)wt;
- struct ieee80211_hw *hw = worker->header.hw;
struct ieee80211_conf *conf = &hw->conf;
struct mwl8k_priv *priv = hw->priv;
- int rc = 0;
+ int rc;
- if (mwl8k_cmd_802_11_radio_control(hw, MWL8K_RADIO_ENABLE)) {
- rc = -EINVAL;
- goto mwl8k_config_exit;
+ if (conf->flags & IEEE80211_CONF_IDLE) {
+ mwl8k_cmd_802_11_radio_disable(hw);
+ priv->current_channel = NULL;
+ return 0;
}
- priv->current_channel = conf->channel;
+ rc = mwl8k_fw_lock(hw);
+ if (rc)
+ return rc;
- if (mwl8k_cmd_set_rf_channel(hw, conf->channel)) {
- rc = -EINVAL;
- goto mwl8k_config_exit;
- }
+ rc = mwl8k_cmd_802_11_radio_enable(hw);
+ if (rc)
+ goto out;
+
+ rc = mwl8k_cmd_set_rf_channel(hw, conf->channel);
+ if (rc)
+ goto out;
+
+ priv->current_channel = conf->channel;
if (conf->power_level > 18)
conf->power_level = 18;
- if (mwl8k_cmd_802_11_rf_tx_power(hw, conf->power_level)) {
- rc = -EINVAL;
- goto mwl8k_config_exit;
- }
+ rc = mwl8k_cmd_802_11_rf_tx_power(hw, conf->power_level);
+ if (rc)
+ goto out;
if (mwl8k_cmd_mimo_config(hw, 0x7, 0x7))
rc = -EINVAL;
-mwl8k_config_exit:
- return rc;
-}
-
-static int mwl8k_config(struct ieee80211_hw *hw, u32 changed)
-{
- int rc = 0;
- struct mwl8k_config_worker *worker;
- struct mwl8k_priv *priv = hw->priv;
-
- worker = kzalloc(sizeof(*worker), GFP_KERNEL);
- if (worker == NULL)
- return -ENOMEM;
-
- worker->changed = changed;
- rc = mwl8k_queue_work(hw, &worker->header,
- priv->config_wq, mwl8k_config_wt);
- if (rc == -ETIMEDOUT) {
- printk(KERN_ERR "%s() timed out.\n", __func__);
- rc = -EINVAL;
- }
-
- kfree(worker);
+out:
+ mwl8k_fw_unlock(hw);
- /*
- * mac80211 will crash on anything other than -EINVAL on
- * error. Looks like wireless extensions which calls mac80211
- * may be the actual culprit...
- */
- return rc ? -EINVAL : 0;
+ return rc;
}
struct mwl8k_bss_info_changed_worker {
goto mwl8k_bss_info_changed_exit;
/* Set radio preamble */
- if (mwl8k_set_radio_preamble(hw,
- info->use_short_preamble))
+ if (mwl8k_set_radio_preamble(hw, info->use_short_preamble))
goto mwl8k_bss_info_changed_exit;
/* Set slot time */
- if (mwl8k_cmd_set_slot(hw, info->use_short_slot ?
- MWL8K_SHORT_SLOTTIME : MWL8K_LONG_SLOTTIME))
+ if (mwl8k_cmd_set_slot(hw, info->use_short_slot))
goto mwl8k_bss_info_changed_exit;
/* Update peer rate info */
u32 changed)
{
struct mwl8k_bss_info_changed_worker *worker;
- struct mwl8k_priv *priv = hw->priv;
struct mwl8k_vif *mv_vif = MWL8K_VIF(vif);
int rc;
worker->vif = vif;
worker->info = info;
worker->changed = changed;
- rc = mwl8k_queue_work(hw, &worker->header,
- priv->config_wq,
- mwl8k_bss_info_changed_wt);
+ rc = mwl8k_queue_work(hw, &worker->header, mwl8k_bss_info_changed_wt);
kfree(worker);
if (rc == -ETIMEDOUT)
printk(KERN_ERR "%s() timed out\n", __func__);
}
+static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw,
+ int mc_count, struct dev_addr_list *mclist)
+{
+ struct mwl8k_cmd_pkt *cmd;
+
+ cmd = __mwl8k_cmd_mac_multicast_adr(hw, mc_count, mclist);
+
+ return (unsigned long)cmd;
+}
+
struct mwl8k_configure_filter_worker {
struct mwl8k_work_struct header;
unsigned int changed_flags;
- unsigned int *total_flags;
- int mc_count;
- struct dev_addr_list *mclist;
+ unsigned int total_flags;
+ struct mwl8k_cmd_pkt *multicast_adr_cmd;
};
#define MWL8K_SUPPORTED_IF_FLAGS FIF_BCN_PRBRESP_PROMISC
{
struct mwl8k_configure_filter_worker *worker =
(struct mwl8k_configure_filter_worker *)wt;
-
struct ieee80211_hw *hw = worker->header.hw;
- unsigned int changed_flags = worker->changed_flags;
- unsigned int *total_flags = worker->total_flags;
- int mc_count = worker->mc_count;
- struct dev_addr_list *mclist = worker->mclist;
-
struct mwl8k_priv *priv = hw->priv;
int rc = 0;
- if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
- if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
+ if (worker->changed_flags & FIF_BCN_PRBRESP_PROMISC) {
+ if (worker->total_flags & FIF_BCN_PRBRESP_PROMISC)
rc = mwl8k_cmd_set_pre_scan(hw);
else {
u8 *bssid;
}
}
- if (rc)
- goto mwl8k_configure_filter_exit;
- if (mc_count) {
- mc_count = mc_count < priv->num_mcaddrs ?
- mc_count : priv->num_mcaddrs;
- rc = mwl8k_cmd_mac_multicast_adr(hw, mc_count, mclist);
- if (rc)
- printk(KERN_ERR
- "%s()Error setting multicast addresses\n",
- __func__);
- }
+ if (!rc && worker->multicast_adr_cmd != NULL)
+ rc = mwl8k_post_cmd(hw, worker->multicast_adr_cmd);
+ kfree(worker->multicast_adr_cmd);
-mwl8k_configure_filter_exit:
return rc;
}
-static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw,
- int mc_count, struct dev_addr_list *mclist)
-{
- struct mwl8k_configure_filter_worker *worker;
-
- worker = kzalloc(sizeof(*worker), GFP_ATOMIC);
-
- if (!worker)
- return 0;
-
- /*
- * XXX: This is _HORRIBLY_ broken!!
- *
- * No locking, the mclist pointer might be invalid as soon as this
- * function returns, something in the list might be invalidated
- * once we get to the worker, etc...
- */
- worker->mc_count = mc_count;
- worker->mclist = mclist;
-
- return (u64)worker;
-}
-
static void mwl8k_configure_filter(struct ieee80211_hw *hw,
unsigned int changed_flags,
unsigned int *total_flags,
u64 multicast)
{
-
- struct mwl8k_configure_filter_worker *worker = (void *)multicast;
- struct mwl8k_priv *priv = hw->priv;
+ struct mwl8k_configure_filter_worker *worker;
/* Clear unsupported feature flags */
*total_flags &= MWL8K_SUPPORTED_IF_FLAGS;
if (!(changed_flags & MWL8K_SUPPORTED_IF_FLAGS))
return;
+ worker = kzalloc(sizeof(*worker), GFP_ATOMIC);
if (worker == NULL)
return;
- worker->header.options = MWL8K_WQ_QUEUE_ONLY | MWL8K_WQ_TX_WAIT_EMPTY;
worker->changed_flags = changed_flags;
- worker->total_flags = total_flags;
+ worker->total_flags = *total_flags;
+ worker->multicast_adr_cmd = (void *)(unsigned long)multicast;
- mwl8k_queue_work(hw, &worker->header, priv->config_wq,
- mwl8k_configure_filter_wt);
+ mwl8k_queue_work(hw, &worker->header, mwl8k_configure_filter_wt);
}
struct mwl8k_set_rts_threshold_worker {
{
int rc;
struct mwl8k_set_rts_threshold_worker *worker;
- struct mwl8k_priv *priv = hw->priv;
worker = kzalloc(sizeof(*worker), GFP_KERNEL);
if (worker == NULL)
worker->value = value;
- rc = mwl8k_queue_work(hw, &worker->header,
- priv->config_wq,
- mwl8k_set_rts_threshold_wt);
+ rc = mwl8k_queue_work(hw, &worker->header, mwl8k_set_rts_threshold_wt);
kfree(worker);
if (rc == -ETIMEDOUT) {
struct mwl8k_priv *priv = hw->priv;
int rc = 0;
- if (priv->wmm_mode == MWL8K_WMM_DISABLE)
- if (mwl8k_set_wmm(hw, MWL8K_WMM_ENABLE)) {
+ if (!priv->wmm_enabled) {
+ if (mwl8k_set_wmm(hw, 1)) {
rc = -EINVAL;
goto mwl8k_conf_tx_exit;
+ }
}
if (mwl8k_set_edca_params(hw, GET_TXQ(queue), params->cw_min,
{
int rc;
struct mwl8k_conf_tx_worker *worker;
- struct mwl8k_priv *priv = hw->priv;
worker = kzalloc(sizeof(*worker), GFP_KERNEL);
if (worker == NULL)
worker->queue = queue;
worker->params = params;
- rc = mwl8k_queue_work(hw, &worker->header,
- priv->config_wq, mwl8k_conf_tx_wt);
+ rc = mwl8k_queue_work(hw, &worker->header, mwl8k_conf_tx_wt);
kfree(worker);
if (rc == -ETIMEDOUT) {
printk(KERN_ERR "%s() timed out\n", __func__);
{
int rc;
struct mwl8k_get_stats_worker *worker;
- struct mwl8k_priv *priv = hw->priv;
worker = kzalloc(sizeof(*worker), GFP_KERNEL);
if (worker == NULL)
return -ENOMEM;
worker->stats = stats;
- rc = mwl8k_queue_work(hw, &worker->header,
- priv->config_wq, mwl8k_get_stats_wt);
+ rc = mwl8k_queue_work(hw, &worker->header, mwl8k_get_stats_wt);
kfree(worker);
if (rc == -ETIMEDOUT) {
for (i = 0; i < MWL8K_TX_QUEUES; i++)
mwl8k_txq_reclaim(hw, i, 0);
- if (priv->tx_wait != NULL) {
- int count = mwl8k_txq_busy(priv);
- if (count == 0) {
- complete(priv->tx_wait);
- priv->tx_wait = NULL;
- }
+ if (priv->tx_wait != NULL && mwl8k_txq_busy(priv) == 0) {
+ complete(priv->tx_wait);
+ priv->tx_wait = NULL;
}
spin_unlock_bh(&priv->tx_lock);
}
struct mwl8k_priv *priv =
container_of(work, struct mwl8k_priv, finalize_join_worker);
struct sk_buff *skb = priv->beacon_skb;
- u8 dtim = (MWL8K_VIF(priv->vif))->bss_info.dtim_period;
+ u8 dtim = MWL8K_VIF(priv->vif)->bss_info.dtim_period;
mwl8k_finalize_join(priv->hw, skb->data, skb->len, dtim);
dev_kfree_skb(skb);
priv = hw->priv;
priv->hw = hw;
priv->pdev = pdev;
- priv->hostcmd_wait = NULL;
- priv->tx_wait = NULL;
- priv->inconfig = false;
- priv->wmm_mode = false;
+ priv->wmm_enabled = false;
priv->pending_tx_pkts = 0;
strncpy(priv->name, MWL8K_NAME, sizeof(priv->name));
- spin_lock_init(&priv->fw_lock);
-
SET_IEEE80211_DEV(hw, &pdev->dev);
pci_set_drvdata(pdev, hw);
hw->queues = MWL8K_TX_QUEUES;
- hw->wiphy->interface_modes =
- BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_MONITOR);
+ hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
/* Set rssi and noise values to dBm */
- hw->flags |= (IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_NOISE_DBM);
+ hw->flags |= IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_NOISE_DBM;
hw->vif_data_size = sizeof(struct mwl8k_vif);
priv->vif = NULL;
/* Set default radio state and preamble */
- priv->radio_preamble = MWL8K_RADIO_DEFAULT_PREAMBLE;
- priv->radio_state = MWL8K_RADIO_DISABLE;
+ priv->radio_on = 0;
+ priv->radio_short_preamble = 0;
/* Finalize join worker */
INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker);
goto err_iounmap;
rxq_refill(hw, 0, INT_MAX);
+ mutex_init(&priv->fw_mutex);
+ priv->fw_mutex_owner = NULL;
+ priv->fw_mutex_depth = 0;
+ priv->tx_wait = NULL;
+ priv->hostcmd_wait = NULL;
+
spin_lock_init(&priv->tx_lock);
for (i = 0; i < MWL8K_TX_QUEUES; i++) {
}
/* Turn radio off */
- rc = mwl8k_cmd_802_11_radio_control(hw, MWL8K_RADIO_DISABLE);
+ rc = mwl8k_cmd_802_11_radio_disable(hw);
if (rc) {
printk(KERN_ERR "%s: Cannot disable\n", priv->name);
goto err_stop_firmware;
}
/* Disable interrupts */
- spin_lock_irq(&priv->tx_lock);
iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
- spin_unlock_irq(&priv->tx_lock);
free_irq(priv->pdev->irq, hw);
rc = ieee80211_register_hw(hw);
mwl8k_release_firmware(priv);
err_free_irq:
- spin_lock_irq(&priv->tx_lock);
iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
- spin_unlock_irq(&priv->tx_lock);
free_irq(priv->pdev->irq, hw);
err_free_queues:
git.openpandora.org / pandora-kernel.git / blobdiff