Copyright (c) 2005 Danny van Dyk <kugelfang@gentoo.org>
Copyright (c) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch>
+ SDIO support
+ Copyright (c) 2009 Albert Herranz <albert_herranz@yahoo.es>
+
Some parts of the code in this file are derived from the ipw2200
driver Copyright(c) 2003 - 2004 Intel Corporation.
#include "xmit.h"
#include "lo.h"
#include "pcmcia.h"
+#include "sdio.h"
+#include <linux/mmc/sdio_func.h>
MODULE_DESCRIPTION("Broadcom B43 wireless driver");
MODULE_AUTHOR("Martin Langer");
MODULE_LICENSE("GPL");
MODULE_FIRMWARE(B43_SUPPORTED_FIRMWARE_ID);
-
+MODULE_FIRMWARE("b43/ucode11.fw");
+MODULE_FIRMWARE("b43/ucode13.fw");
+MODULE_FIRMWARE("b43/ucode14.fw");
+MODULE_FIRMWARE("b43/ucode15.fw");
+MODULE_FIRMWARE("b43/ucode5.fw");
+MODULE_FIRMWARE("b43/ucode9.fw");
static int modparam_bad_frames_preempt;
module_param_named(bad_frames_preempt, modparam_bad_frames_preempt, int, 0444);
module_param_named(verbose, b43_modparam_verbose, int, 0644);
MODULE_PARM_DESC(verbose, "Log message verbosity: 0=error, 1=warn, 2=info(default), 3=debug");
+static int modparam_pio;
+module_param_named(pio, modparam_pio, int, 0444);
+MODULE_PARM_DESC(pio, "enable(1) / disable(0) PIO mode");
static const struct ssb_device_id b43_ssb_tbl[] = {
SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 5),
SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 9),
SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 10),
SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 11),
+ SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 12),
SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 13),
SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 15),
SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 16),
static void b43_wireless_core_exit(struct b43_wldev *dev);
static int b43_wireless_core_init(struct b43_wldev *dev);
-static void b43_wireless_core_stop(struct b43_wldev *dev);
+static struct b43_wldev * b43_wireless_core_stop(struct b43_wldev *dev);
static int b43_wireless_core_start(struct b43_wldev *dev);
static int b43_ratelimit(struct b43_wl *wl)
b43_write32(dev, B43_MMIO_SHM_CONTROL, control);
}
-u32 __b43_shm_read32(struct b43_wldev *dev, u16 routing, u16 offset)
+u32 b43_shm_read32(struct b43_wldev *dev, u16 routing, u16 offset)
{
u32 ret;
return ret;
}
-u32 b43_shm_read32(struct b43_wldev *dev, u16 routing, u16 offset)
-{
- struct b43_wl *wl = dev->wl;
- unsigned long flags;
- u32 ret;
-
- spin_lock_irqsave(&wl->shm_lock, flags);
- ret = __b43_shm_read32(dev, routing, offset);
- spin_unlock_irqrestore(&wl->shm_lock, flags);
-
- return ret;
-}
-
-u16 __b43_shm_read16(struct b43_wldev *dev, u16 routing, u16 offset)
+u16 b43_shm_read16(struct b43_wldev *dev, u16 routing, u16 offset)
{
u16 ret;
return ret;
}
-u16 b43_shm_read16(struct b43_wldev *dev, u16 routing, u16 offset)
-{
- struct b43_wl *wl = dev->wl;
- unsigned long flags;
- u16 ret;
-
- spin_lock_irqsave(&wl->shm_lock, flags);
- ret = __b43_shm_read16(dev, routing, offset);
- spin_unlock_irqrestore(&wl->shm_lock, flags);
-
- return ret;
-}
-
-void __b43_shm_write32(struct b43_wldev *dev, u16 routing, u16 offset, u32 value)
+void b43_shm_write32(struct b43_wldev *dev, u16 routing, u16 offset, u32 value)
{
if (routing == B43_SHM_SHARED) {
B43_WARN_ON(offset & 0x0001);
b43_write32(dev, B43_MMIO_SHM_DATA, value);
}
-void b43_shm_write32(struct b43_wldev *dev, u16 routing, u16 offset, u32 value)
-{
- struct b43_wl *wl = dev->wl;
- unsigned long flags;
-
- spin_lock_irqsave(&wl->shm_lock, flags);
- __b43_shm_write32(dev, routing, offset, value);
- spin_unlock_irqrestore(&wl->shm_lock, flags);
-}
-
-void __b43_shm_write16(struct b43_wldev *dev, u16 routing, u16 offset, u16 value)
+void b43_shm_write16(struct b43_wldev *dev, u16 routing, u16 offset, u16 value)
{
if (routing == B43_SHM_SHARED) {
B43_WARN_ON(offset & 0x0001);
b43_write16(dev, B43_MMIO_SHM_DATA, value);
}
-void b43_shm_write16(struct b43_wldev *dev, u16 routing, u16 offset, u16 value)
-{
- struct b43_wl *wl = dev->wl;
- unsigned long flags;
-
- spin_lock_irqsave(&wl->shm_lock, flags);
- __b43_shm_write16(dev, routing, offset, value);
- spin_unlock_irqrestore(&wl->shm_lock, flags);
-}
-
/* Read HostFlags */
u64 b43_hf_read(struct b43_wldev *dev)
{
b43_set_slot_time(dev, 20);
}
-/* Synchronize IRQ top- and bottom-half.
- * IRQs must be masked before calling this.
- * This must not be called with the irq_lock held.
- */
-static void b43_synchronize_irq(struct b43_wldev *dev)
-{
- synchronize_irq(dev->dev->irq);
- tasklet_kill(&dev->isr_tasklet);
-}
-
/* DummyTransmission function, as documented on
* http://bcm-v4.sipsolutions.net/802.11/DummyTransmission
*/
void b43_dummy_transmission(struct b43_wldev *dev, bool ofdm, bool pa_on)
{
- struct b43_wl *wl = dev->wl;
struct b43_phy *phy = &dev->phy;
unsigned int i, max_loop;
u16 value;
buffer[0] = 0x000B846E;
}
- spin_lock_irq(&wl->irq_lock);
- write_lock(&wl->tx_lock);
-
for (i = 0; i < 5; i++)
b43_ram_write(dev, i * 4, buffer[i]);
}
if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5)
b43_radio_write16(dev, 0x0051, 0x0037);
-
- write_unlock(&wl->tx_lock);
- spin_unlock_irq(&wl->irq_lock);
}
static void key_write(struct b43_wldev *dev,
}
static void b43_op_update_tkip_key(struct ieee80211_hw *hw,
- struct ieee80211_key_conf *keyconf, const u8 *addr,
- u32 iv32, u16 *phase1key)
+ struct ieee80211_vif *vif,
+ struct ieee80211_key_conf *keyconf,
+ struct ieee80211_sta *sta,
+ u32 iv32, u16 *phase1key)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
struct b43_wldev *dev;
keymac_write(dev, index, NULL); /* First zero out mac to avoid race */
rx_tkip_phase1_write(dev, index, iv32, phase1key);
- keymac_write(dev, index, addr);
+ /* only pairwise TKIP keys are supported right now */
+ if (WARN_ON(!sta))
+ goto out_unlock;
+ keymac_write(dev, index, sta->addr);
out_unlock:
mutex_unlock(&wl->mutex);
}
}
+static void b43_do_beacon_update_trigger_work(struct b43_wldev *dev)
+{
+ u32 old_irq_mask = dev->irq_mask;
+
+ /* update beacon right away or defer to irq */
+ handle_irq_beacon(dev);
+ if (old_irq_mask != dev->irq_mask) {
+ /* The handler updated the IRQ mask. */
+ B43_WARN_ON(!dev->irq_mask);
+ if (b43_read32(dev, B43_MMIO_GEN_IRQ_MASK)) {
+ b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, dev->irq_mask);
+ } else {
+ /* Device interrupts are currently disabled. That means
+ * we just ran the hardirq handler and scheduled the
+ * IRQ thread. The thread will write the IRQ mask when
+ * it finished, so there's nothing to do here. Writing
+ * the mask _here_ would incorrectly re-enable IRQs. */
+ }
+ }
+}
+
static void b43_beacon_update_trigger_work(struct work_struct *work)
{
struct b43_wl *wl = container_of(work, struct b43_wl,
mutex_lock(&wl->mutex);
dev = wl->current_dev;
if (likely(dev && (b43_status(dev) >= B43_STAT_INITIALIZED))) {
- spin_lock_irq(&wl->irq_lock);
- /* update beacon right away or defer to irq */
- handle_irq_beacon(dev);
- /* The handler might have updated the IRQ mask. */
- b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, dev->irq_mask);
- mmiowb();
- spin_unlock_irq(&wl->irq_lock);
+ if (dev->dev->bus->bustype == SSB_BUSTYPE_SDIO) {
+ /* wl->mutex is enough. */
+ b43_do_beacon_update_trigger_work(dev);
+ mmiowb();
+ } else {
+ spin_lock_irq(&wl->hardirq_lock);
+ b43_do_beacon_update_trigger_work(dev);
+ mmiowb();
+ spin_unlock_irq(&wl->hardirq_lock);
+ }
}
mutex_unlock(&wl->mutex);
}
/* Asynchronously update the packet templates in template RAM.
- * Locking: Requires wl->irq_lock to be locked. */
+ * Locking: Requires wl->mutex to be locked. */
static void b43_update_templates(struct b43_wl *wl)
{
struct sk_buff *beacon;
B43_DEBUGIRQ_REASON_REG, B43_DEBUGIRQ_ACK);
}
-/* Interrupt handler bottom-half */
-static void b43_interrupt_tasklet(struct b43_wldev *dev)
+static void b43_do_interrupt_thread(struct b43_wldev *dev)
{
u32 reason;
u32 dma_reason[ARRAY_SIZE(dev->dma_reason)];
u32 merged_dma_reason = 0;
int i;
- unsigned long flags;
- spin_lock_irqsave(&dev->wl->irq_lock, flags);
-
- B43_WARN_ON(b43_status(dev) != B43_STAT_STARTED);
+ if (unlikely(b43_status(dev) != B43_STAT_STARTED))
+ return;
reason = dev->irq_reason;
for (i = 0; i < ARRAY_SIZE(dma_reason); i++) {
dma_reason[0], dma_reason[1],
dma_reason[2], dma_reason[3],
dma_reason[4], dma_reason[5]);
- b43_controller_restart(dev, "DMA error");
- mmiowb();
- spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
+ b43err(dev->wl, "This device does not support DMA "
+ "on your system. Please use PIO instead.\n");
+ b43err(dev->wl, "Unload the b43 module and reload "
+ "with 'pio=1'\n");
return;
}
if (merged_dma_reason & B43_DMAIRQ_NONFATALMASK) {
if (reason & B43_IRQ_TX_OK)
handle_irq_transmit_status(dev);
+ /* Re-enable interrupts on the device by restoring the current interrupt mask. */
b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, dev->irq_mask);
- mmiowb();
- spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
+
+#if B43_DEBUG
+ if (b43_debug(dev, B43_DBG_VERBOSESTATS)) {
+ dev->irq_count++;
+ for (i = 0; i < ARRAY_SIZE(dev->irq_bit_count); i++) {
+ if (reason & (1 << i))
+ dev->irq_bit_count[i]++;
+ }
+ }
+#endif
}
-static void b43_interrupt_ack(struct b43_wldev *dev, u32 reason)
+/* Interrupt thread handler. Handles device interrupts in thread context. */
+static irqreturn_t b43_interrupt_thread_handler(int irq, void *dev_id)
{
- b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, reason);
+ struct b43_wldev *dev = dev_id;
- b43_write32(dev, B43_MMIO_DMA0_REASON, dev->dma_reason[0]);
- b43_write32(dev, B43_MMIO_DMA1_REASON, dev->dma_reason[1]);
- b43_write32(dev, B43_MMIO_DMA2_REASON, dev->dma_reason[2]);
- b43_write32(dev, B43_MMIO_DMA3_REASON, dev->dma_reason[3]);
- b43_write32(dev, B43_MMIO_DMA4_REASON, dev->dma_reason[4]);
-/* Unused ring
- b43_write32(dev, B43_MMIO_DMA5_REASON, dev->dma_reason[5]);
-*/
+ mutex_lock(&dev->wl->mutex);
+ b43_do_interrupt_thread(dev);
+ mmiowb();
+ mutex_unlock(&dev->wl->mutex);
+
+ return IRQ_HANDLED;
}
-/* Interrupt handler top-half */
-static irqreturn_t b43_interrupt_handler(int irq, void *dev_id)
+static irqreturn_t b43_do_interrupt(struct b43_wldev *dev)
{
- irqreturn_t ret = IRQ_NONE;
- struct b43_wldev *dev = dev_id;
u32 reason;
- B43_WARN_ON(!dev);
-
- spin_lock(&dev->wl->irq_lock);
+ /* This code runs under wl->hardirq_lock, but _only_ on non-SDIO busses.
+ * On SDIO, this runs under wl->mutex. */
- if (unlikely(b43_status(dev) < B43_STAT_STARTED)) {
- /* This can only happen on shared IRQ lines. */
- goto out;
- }
reason = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
if (reason == 0xffffffff) /* shared IRQ */
- goto out;
- ret = IRQ_HANDLED;
+ return IRQ_NONE;
reason &= dev->irq_mask;
if (!reason)
- goto out;
+ return IRQ_HANDLED;
dev->dma_reason[0] = b43_read32(dev, B43_MMIO_DMA0_REASON)
& 0x0001DC00;
& 0x0000DC00;
*/
- b43_interrupt_ack(dev, reason);
- /* disable all IRQs. They are enabled again in the bottom half. */
+ /* ACK the interrupt. */
+ b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, reason);
+ b43_write32(dev, B43_MMIO_DMA0_REASON, dev->dma_reason[0]);
+ b43_write32(dev, B43_MMIO_DMA1_REASON, dev->dma_reason[1]);
+ b43_write32(dev, B43_MMIO_DMA2_REASON, dev->dma_reason[2]);
+ b43_write32(dev, B43_MMIO_DMA3_REASON, dev->dma_reason[3]);
+ b43_write32(dev, B43_MMIO_DMA4_REASON, dev->dma_reason[4]);
+/* Unused ring
+ b43_write32(dev, B43_MMIO_DMA5_REASON, dev->dma_reason[5]);
+*/
+
+ /* Disable IRQs on the device. The IRQ thread handler will re-enable them. */
b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, 0);
- /* save the reason code and call our bottom half. */
+ /* Save the reason bitmasks for the IRQ thread handler. */
dev->irq_reason = reason;
- tasklet_schedule(&dev->isr_tasklet);
-out:
+
+ return IRQ_WAKE_THREAD;
+}
+
+/* Interrupt handler top-half. This runs with interrupts disabled. */
+static irqreturn_t b43_interrupt_handler(int irq, void *dev_id)
+{
+ struct b43_wldev *dev = dev_id;
+ irqreturn_t ret;
+
+ if (unlikely(b43_status(dev) < B43_STAT_STARTED))
+ return IRQ_NONE;
+
+ spin_lock(&dev->wl->hardirq_lock);
+ ret = b43_do_interrupt(dev);
mmiowb();
- spin_unlock(&dev->wl->irq_lock);
+ spin_unlock(&dev->wl->hardirq_lock);
return ret;
}
+/* SDIO interrupt handler. This runs in process context. */
+static void b43_sdio_interrupt_handler(struct b43_wldev *dev)
+{
+ struct b43_wl *wl = dev->wl;
+ irqreturn_t ret;
+
+ mutex_lock(&wl->mutex);
+
+ ret = b43_do_interrupt(dev);
+ if (ret == IRQ_WAKE_THREAD)
+ b43_do_interrupt_thread(dev);
+
+ mutex_unlock(&wl->mutex);
+}
+
void b43_do_release_fw(struct b43_firmware_file *fw)
{
release_firmware(fw->data);
err = -ENODEV;
goto error;
}
- msleep_interruptible(50);
- if (signal_pending(current)) {
- err = -EINTR;
- goto error;
- }
+ msleep(50);
}
b43_read32(dev, B43_MMIO_GEN_IRQ_REASON); /* dummy read */
cfp_pretbtt = 50;
}
b43_write16(dev, 0x612, cfp_pretbtt);
+
+ /* FIXME: We don't currently implement the PMQ mechanism,
+ * so always disable it. If we want to implement PMQ,
+ * we need to enable it here (clear DISCPMQ) in AP mode.
+ */
+ if (0 /* ctl & B43_MACCTL_AP */) {
+ b43_write32(dev, B43_MMIO_MACCTL,
+ b43_read32(dev, B43_MMIO_MACCTL)
+ & ~B43_MACCTL_DISCPMQ);
+ } else {
+ b43_write32(dev, B43_MMIO_MACCTL,
+ b43_read32(dev, B43_MMIO_MACCTL)
+ | B43_MACCTL_DISCPMQ);
+ }
}
static void b43_rate_memory_write(struct b43_wldev *dev, u16 rate, int is_ofdm)
atomic_set(&phy->txerr_cnt, B43_PHY_TX_BADNESS_LIMIT);
wmb();
+
+#if B43_DEBUG
+ if (b43_debug(dev, B43_DBG_VERBOSESTATS)) {
+ unsigned int i;
+
+ b43dbg(dev->wl, "Stats: %7u IRQs/sec, %7u TX/sec, %7u RX/sec\n",
+ dev->irq_count / 15,
+ dev->tx_count / 15,
+ dev->rx_count / 15);
+ dev->irq_count = 0;
+ dev->tx_count = 0;
+ dev->rx_count = 0;
+ for (i = 0; i < ARRAY_SIZE(dev->irq_bit_count); i++) {
+ if (dev->irq_bit_count[i]) {
+ b43dbg(dev->wl, "Stats: %7u IRQ-%02u/sec (0x%08X)\n",
+ dev->irq_bit_count[i] / 15, i, (1 << i));
+ dev->irq_bit_count[i] = 0;
+ }
+ }
+ }
+#endif
}
static void do_periodic_work(struct b43_wldev *dev)
static int b43_rng_read(struct hwrng *rng, u32 *data)
{
struct b43_wl *wl = (struct b43_wl *)rng->priv;
- unsigned long flags;
-
- /* Don't take wl->mutex here, as it could deadlock with
- * hwrng internal locking. It's not needed to take
- * wl->mutex here, anyway. */
+ struct b43_wldev *dev;
+ int count = -ENODEV;
- spin_lock_irqsave(&wl->irq_lock, flags);
- *data = b43_read16(wl->current_dev, B43_MMIO_RNG);
- spin_unlock_irqrestore(&wl->irq_lock, flags);
+ mutex_lock(&wl->mutex);
+ dev = wl->current_dev;
+ if (likely(dev && b43_status(dev) >= B43_STAT_INITIALIZED)) {
+ *data = b43_read16(dev, B43_MMIO_RNG);
+ count = sizeof(u16);
+ }
+ mutex_unlock(&wl->mutex);
- return (sizeof(u16));
+ return count;
}
#endif /* CONFIG_B43_HWRNG */
return err;
}
-static int b43_op_tx(struct ieee80211_hw *hw,
- struct sk_buff *skb)
+static void b43_tx_work(struct work_struct *work)
{
- struct b43_wl *wl = hw_to_b43_wl(hw);
- struct b43_wldev *dev = wl->current_dev;
- unsigned long flags;
- int err;
+ struct b43_wl *wl = container_of(work, struct b43_wl, tx_work);
+ struct b43_wldev *dev;
+ struct sk_buff *skb;
+ int err = 0;
- if (unlikely(skb->len < 2 + 2 + 6)) {
- /* Too short, this can't be a valid frame. */
- goto drop_packet;
+ mutex_lock(&wl->mutex);
+ dev = wl->current_dev;
+ if (unlikely(!dev || b43_status(dev) < B43_STAT_STARTED)) {
+ mutex_unlock(&wl->mutex);
+ return;
}
- B43_WARN_ON(skb_shinfo(skb)->nr_frags);
- if (unlikely(!dev))
- goto drop_packet;
- /* Transmissions on seperate queues can run concurrently. */
- read_lock_irqsave(&wl->tx_lock, flags);
+ while (skb_queue_len(&wl->tx_queue)) {
+ skb = skb_dequeue(&wl->tx_queue);
- err = -ENODEV;
- if (likely(b43_status(dev) >= B43_STAT_STARTED)) {
if (b43_using_pio_transfers(dev))
err = b43_pio_tx(dev, skb);
else
err = b43_dma_tx(dev, skb);
+ if (unlikely(err))
+ dev_kfree_skb(skb); /* Drop it */
}
- read_unlock_irqrestore(&wl->tx_lock, flags);
+#if B43_DEBUG
+ dev->tx_count++;
+#endif
+ mutex_unlock(&wl->mutex);
+}
- if (unlikely(err))
- goto drop_packet;
- return NETDEV_TX_OK;
+static int b43_op_tx(struct ieee80211_hw *hw,
+ struct sk_buff *skb)
+{
+ struct b43_wl *wl = hw_to_b43_wl(hw);
+
+ if (unlikely(skb->len < 2 + 2 + 6)) {
+ /* Too short, this can't be a valid frame. */
+ dev_kfree_skb_any(skb);
+ return NETDEV_TX_OK;
+ }
+ B43_WARN_ON(skb_shinfo(skb)->nr_frags);
+
+ skb_queue_tail(&wl->tx_queue, skb);
+ ieee80211_queue_work(wl->hw, &wl->tx_work);
-drop_packet:
- /* We can not transmit this packet. Drop it. */
- dev_kfree_skb_any(skb);
return NETDEV_TX_OK;
}
-/* Locking: wl->irq_lock */
static void b43_qos_params_upload(struct b43_wldev *dev,
const struct ieee80211_tx_queue_params *p,
u16 shm_offset)
int bslots, tmp;
unsigned int i;
+ if (!dev->qos_enabled)
+ return;
+
bslots = b43_read16(dev, B43_MMIO_RNG) & p->cw_min;
memset(¶ms, 0, sizeof(params));
struct b43_qos_params *params;
unsigned int i;
+ if (!dev->qos_enabled)
+ return;
+
BUILD_BUG_ON(ARRAY_SIZE(b43_qos_shm_offsets) !=
ARRAY_SIZE(wl->qos_params));
/* Initialize the core's QOS capabilities */
static void b43_qos_init(struct b43_wldev *dev)
{
+ if (!dev->qos_enabled) {
+ /* Disable QOS support. */
+ b43_hf_write(dev, b43_hf_read(dev) & ~B43_HF_EDCF);
+ b43_write16(dev, B43_MMIO_IFSCTL,
+ b43_read16(dev, B43_MMIO_IFSCTL)
+ & ~B43_MMIO_IFSCTL_USE_EDCF);
+ b43dbg(dev->wl, "QoS disabled\n");
+ return;
+ }
+
/* Upload the current QOS parameters. */
b43_qos_upload_all(dev);
b43_write16(dev, B43_MMIO_IFSCTL,
b43_read16(dev, B43_MMIO_IFSCTL)
| B43_MMIO_IFSCTL_USE_EDCF);
+ b43dbg(dev->wl, "QoS enabled\n");
}
static int b43_op_conf_tx(struct ieee80211_hw *hw, u16 _queue,
struct ieee80211_tx_queue_stats *stats)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
- struct b43_wldev *dev = wl->current_dev;
- unsigned long flags;
+ struct b43_wldev *dev;
int err = -ENODEV;
- if (!dev)
- goto out;
- spin_lock_irqsave(&wl->irq_lock, flags);
- if (likely(b43_status(dev) >= B43_STAT_STARTED)) {
+ mutex_lock(&wl->mutex);
+ dev = wl->current_dev;
+ if (dev && b43_status(dev) >= B43_STAT_STARTED) {
if (b43_using_pio_transfers(dev))
b43_pio_get_tx_stats(dev, stats);
else
b43_dma_get_tx_stats(dev, stats);
err = 0;
}
- spin_unlock_irqrestore(&wl->irq_lock, flags);
-out:
+ mutex_unlock(&wl->mutex);
+
return err;
}
struct ieee80211_low_level_stats *stats)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
- unsigned long flags;
- spin_lock_irqsave(&wl->irq_lock, flags);
+ mutex_lock(&wl->mutex);
memcpy(stats, &wl->ieee_stats, sizeof(*stats));
- spin_unlock_irqrestore(&wl->irq_lock, flags);
+ mutex_unlock(&wl->mutex);
return 0;
}
u64 tsf;
mutex_lock(&wl->mutex);
- spin_lock_irq(&wl->irq_lock);
dev = wl->current_dev;
if (dev && (b43_status(dev) >= B43_STAT_INITIALIZED))
else
tsf = 0;
- spin_unlock_irq(&wl->irq_lock);
mutex_unlock(&wl->mutex);
return tsf;
struct b43_wldev *dev;
mutex_lock(&wl->mutex);
- spin_lock_irq(&wl->irq_lock);
dev = wl->current_dev;
if (dev && (b43_status(dev) >= B43_STAT_INITIALIZED))
b43_tsf_write(dev, tsf);
- spin_unlock_irq(&wl->irq_lock);
mutex_unlock(&wl->mutex);
}
prev_status = b43_status(down_dev);
/* Shutdown the currently running core. */
if (prev_status >= B43_STAT_STARTED)
- b43_wireless_core_stop(down_dev);
+ down_dev = b43_wireless_core_stop(down_dev);
if (prev_status >= B43_STAT_INITIALIZED)
b43_wireless_core_exit(down_dev);
struct b43_wldev *dev;
struct b43_phy *phy;
struct ieee80211_conf *conf = &hw->conf;
- unsigned long flags;
int antenna;
int err = 0;
if (conf->channel->hw_value != phy->channel)
b43_switch_channel(dev, conf->channel->hw_value);
- dev->wl->radiotap_enabled = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
+ dev->wl->radiotap_enabled = !!(conf->flags & IEEE80211_CONF_MONITOR);
/* Adjust the desired TX power level. */
if (conf->power_level != 0) {
- spin_lock_irqsave(&wl->irq_lock, flags);
if (conf->power_level != phy->desired_txpower) {
phy->desired_txpower = conf->power_level;
b43_phy_txpower_check(dev, B43_TXPWR_IGNORE_TIME |
B43_TXPWR_IGNORE_TSSI);
}
- spin_unlock_irqrestore(&wl->irq_lock, flags);
}
/* Antennas for RX and management frame TX. */
{
struct b43_wl *wl = hw_to_b43_wl(hw);
struct b43_wldev *dev;
- unsigned long flags;
mutex_lock(&wl->mutex);
B43_WARN_ON(wl->vif != vif);
- spin_lock_irqsave(&wl->irq_lock, flags);
if (changed & BSS_CHANGED_BSSID) {
if (conf->bssid)
memcpy(wl->bssid, conf->bssid, ETH_ALEN);
if (changed & BSS_CHANGED_BSSID)
b43_write_mac_bssid_templates(dev);
}
- spin_unlock_irqrestore(&wl->irq_lock, flags);
b43_mac_suspend(dev);
return -ENOSPC; /* User disabled HW-crypto */
mutex_lock(&wl->mutex);
- spin_lock_irq(&wl->irq_lock);
- write_lock(&wl->tx_lock);
- /* Why do we need all this locking here?
- * mutex -> Every config operation must take it.
- * irq_lock -> We modify the dev->key array, which is accessed
- * in the IRQ handlers.
- * tx_lock -> We modify the dev->key array, which is accessed
- * in the TX handler.
- */
dev = wl->current_dev;
err = -ENODEV;
sta ? sta->addr : bcast_addr);
b43_dump_keymemory(dev);
}
- write_unlock(&wl->tx_lock);
- spin_unlock_irq(&wl->irq_lock);
mutex_unlock(&wl->mutex);
return err;
u64 multicast)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
- struct b43_wldev *dev = wl->current_dev;
- unsigned long flags;
+ struct b43_wldev *dev;
+ mutex_lock(&wl->mutex);
+ dev = wl->current_dev;
if (!dev) {
*fflags = 0;
- return;
+ goto out_unlock;
}
- spin_lock_irqsave(&wl->irq_lock, flags);
*fflags &= FIF_PROMISC_IN_BSS |
FIF_ALLMULTI |
FIF_FCSFAIL |
if (changed && b43_status(dev) >= B43_STAT_INITIALIZED)
b43_adjust_opmode(dev);
- spin_unlock_irqrestore(&wl->irq_lock, flags);
+
+out_unlock:
+ mutex_unlock(&wl->mutex);
}
-/* Locking: wl->mutex */
-static void b43_wireless_core_stop(struct b43_wldev *dev)
+/* Locking: wl->mutex
+ * Returns the current dev. This might be different from the passed in dev,
+ * because the core might be gone away while we unlocked the mutex. */
+static struct b43_wldev * b43_wireless_core_stop(struct b43_wldev *dev)
{
struct b43_wl *wl = dev->wl;
- unsigned long flags;
+ struct b43_wldev *orig_dev;
+ u32 mask;
- if (b43_status(dev) < B43_STAT_STARTED)
- return;
+redo:
+ if (!dev || b43_status(dev) < B43_STAT_STARTED)
+ return dev;
- /* Disable and sync interrupts. We must do this before than
- * setting the status to INITIALIZED, as the interrupt handler
- * won't care about IRQs then. */
- spin_lock_irqsave(&wl->irq_lock, flags);
- b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, 0);
- b43_read32(dev, B43_MMIO_GEN_IRQ_MASK); /* flush */
- spin_unlock_irqrestore(&wl->irq_lock, flags);
- b43_synchronize_irq(dev);
+ /* Cancel work. Unlock to avoid deadlocks. */
+ mutex_unlock(&wl->mutex);
+ cancel_delayed_work_sync(&dev->periodic_work);
+ cancel_work_sync(&wl->tx_work);
+ mutex_lock(&wl->mutex);
+ dev = wl->current_dev;
+ if (!dev || b43_status(dev) < B43_STAT_STARTED) {
+ /* Whoops, aliens ate up the device while we were unlocked. */
+ return dev;
+ }
- write_lock_irqsave(&wl->tx_lock, flags);
+ /* Disable interrupts on the device. */
b43_set_status(dev, B43_STAT_INITIALIZED);
- write_unlock_irqrestore(&wl->tx_lock, flags);
-
- b43_pio_stop(dev);
+ if (dev->dev->bus->bustype == SSB_BUSTYPE_SDIO) {
+ /* wl->mutex is locked. That is enough. */
+ b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, 0);
+ b43_read32(dev, B43_MMIO_GEN_IRQ_MASK); /* Flush */
+ } else {
+ spin_lock_irq(&wl->hardirq_lock);
+ b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, 0);
+ b43_read32(dev, B43_MMIO_GEN_IRQ_MASK); /* Flush */
+ spin_unlock_irq(&wl->hardirq_lock);
+ }
+ /* Synchronize and free the interrupt handlers. Unlock to avoid deadlocks. */
+ orig_dev = dev;
mutex_unlock(&wl->mutex);
- /* Must unlock as it would otherwise deadlock. No races here.
- * Cancel the possibly running self-rearming periodic work. */
- cancel_delayed_work_sync(&dev->periodic_work);
+ if (dev->dev->bus->bustype == SSB_BUSTYPE_SDIO) {
+ b43_sdio_free_irq(dev);
+ } else {
+ synchronize_irq(dev->dev->irq);
+ free_irq(dev->dev->irq, dev);
+ }
mutex_lock(&wl->mutex);
+ dev = wl->current_dev;
+ if (!dev)
+ return dev;
+ if (dev != orig_dev) {
+ if (b43_status(dev) >= B43_STAT_STARTED)
+ goto redo;
+ return dev;
+ }
+ mask = b43_read32(dev, B43_MMIO_GEN_IRQ_MASK);
+ B43_WARN_ON(mask != 0xFFFFFFFF && mask);
+
+ /* Drain the TX queue */
+ while (skb_queue_len(&wl->tx_queue))
+ dev_kfree_skb(skb_dequeue(&wl->tx_queue));
b43_mac_suspend(dev);
- free_irq(dev->dev->irq, dev);
+ b43_leds_exit(dev);
b43dbg(wl, "Wireless interface stopped\n");
+
+ return dev;
}
/* Locking: wl->mutex */
B43_WARN_ON(b43_status(dev) != B43_STAT_INITIALIZED);
drain_txstatus_queue(dev);
- err = request_irq(dev->dev->irq, b43_interrupt_handler,
- IRQF_SHARED, KBUILD_MODNAME, dev);
- if (err) {
- b43err(dev->wl, "Cannot request IRQ-%d\n", dev->dev->irq);
- goto out;
+ if (dev->dev->bus->bustype == SSB_BUSTYPE_SDIO) {
+ err = b43_sdio_request_irq(dev, b43_sdio_interrupt_handler);
+ if (err) {
+ b43err(dev->wl, "Cannot request SDIO IRQ\n");
+ goto out;
+ }
+ } else {
+ err = request_threaded_irq(dev->dev->irq, b43_interrupt_handler,
+ b43_interrupt_thread_handler,
+ IRQF_SHARED, KBUILD_MODNAME, dev);
+ if (err) {
+ b43err(dev->wl, "Cannot request IRQ-%d\n", dev->dev->irq);
+ goto out;
+ }
}
/* We are ready to run. */
/* Start maintainance work */
b43_periodic_tasks_setup(dev);
+ b43_leds_init(dev);
+
b43dbg(dev->wl, "Wireless interface started\n");
- out:
+out:
return err;
}
bus->pcicore.dev->id.revision <= 5) {
/* IMCFGLO timeouts workaround. */
tmp = ssb_read32(dev->dev, SSB_IMCFGLO);
- tmp &= ~SSB_IMCFGLO_REQTO;
- tmp &= ~SSB_IMCFGLO_SERTO;
switch (bus->bustype) {
case SSB_BUSTYPE_PCI:
case SSB_BUSTYPE_PCMCIA:
+ tmp &= ~SSB_IMCFGLO_REQTO;
+ tmp &= ~SSB_IMCFGLO_SERTO;
tmp |= 0x32;
break;
case SSB_BUSTYPE_SSB:
+ tmp &= ~SSB_IMCFGLO_REQTO;
+ tmp &= ~SSB_IMCFGLO_SERTO;
tmp |= 0x53;
break;
+ default:
+ break;
}
ssb_write32(dev->dev, SSB_IMCFGLO, tmp);
}
{
u32 macctl;
- B43_WARN_ON(b43_status(dev) > B43_STAT_INITIALIZED);
- if (b43_status(dev) != B43_STAT_INITIALIZED)
+ B43_WARN_ON(dev && b43_status(dev) > B43_STAT_INITIALIZED);
+ if (!dev || b43_status(dev) != B43_STAT_INITIALIZED)
return;
b43_set_status(dev, B43_STAT_UNINIT);
macctl |= B43_MACCTL_PSM_JMP0;
b43_write32(dev, B43_MMIO_MACCTL, macctl);
- if (!dev->suspend_in_progress) {
- b43_leds_exit(dev);
- b43_rng_exit(dev->wl);
- }
b43_dma_free(dev);
b43_pio_free(dev);
b43_chip_exit(dev);
/* Initialize a wireless core */
static int b43_wireless_core_init(struct b43_wldev *dev)
{
- struct b43_wl *wl = dev->wl;
struct ssb_bus *bus = dev->dev->bus;
struct ssb_sprom *sprom = &bus->sprom;
struct b43_phy *phy = &dev->phy;
/* Maximum Contention Window */
b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MAXCONT, 0x3FF);
- if ((dev->dev->bus->bustype == SSB_BUSTYPE_PCMCIA) || B43_FORCE_PIO) {
+ if ((dev->dev->bus->bustype == SSB_BUSTYPE_PCMCIA) ||
+ (dev->dev->bus->bustype == SSB_BUSTYPE_SDIO) ||
+ modparam_pio) {
dev->__using_pio_transfers = 1;
err = b43_pio_init(dev);
} else {
ssb_bus_powerup(bus, !(sprom->boardflags_lo & B43_BFL_XTAL_NOSLOW));
b43_upload_card_macaddress(dev);
b43_security_init(dev);
- if (!dev->suspend_in_progress)
- b43_rng_init(wl);
+
+ ieee80211_wake_queues(dev->wl->hw);
+
+ ieee80211_wake_queues(dev->wl->hw);
b43_set_status(dev, B43_STAT_INITIALIZED);
- if (!dev->suspend_in_progress)
- b43_leds_init(dev);
out:
return err;
}
static int b43_op_add_interface(struct ieee80211_hw *hw,
- struct ieee80211_if_init_conf *conf)
+ struct ieee80211_vif *vif)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
struct b43_wldev *dev;
- unsigned long flags;
int err = -EOPNOTSUPP;
/* TODO: allow WDS/AP devices to coexist */
- if (conf->type != NL80211_IFTYPE_AP &&
- conf->type != NL80211_IFTYPE_MESH_POINT &&
- conf->type != NL80211_IFTYPE_STATION &&
- conf->type != NL80211_IFTYPE_WDS &&
- conf->type != NL80211_IFTYPE_ADHOC)
+ if (vif->type != NL80211_IFTYPE_AP &&
+ vif->type != NL80211_IFTYPE_MESH_POINT &&
+ vif->type != NL80211_IFTYPE_STATION &&
+ vif->type != NL80211_IFTYPE_WDS &&
+ vif->type != NL80211_IFTYPE_ADHOC)
return -EOPNOTSUPP;
mutex_lock(&wl->mutex);
if (wl->operating)
goto out_mutex_unlock;
- b43dbg(wl, "Adding Interface type %d\n", conf->type);
+ b43dbg(wl, "Adding Interface type %d\n", vif->type);
dev = wl->current_dev;
wl->operating = 1;
- wl->vif = conf->vif;
- wl->if_type = conf->type;
- memcpy(wl->mac_addr, conf->mac_addr, ETH_ALEN);
+ wl->vif = vif;
+ wl->if_type = vif->type;
+ memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
- spin_lock_irqsave(&wl->irq_lock, flags);
b43_adjust_opmode(dev);
b43_set_pretbtt(dev);
b43_set_synth_pu_delay(dev, 0);
b43_upload_card_macaddress(dev);
- spin_unlock_irqrestore(&wl->irq_lock, flags);
err = 0;
out_mutex_unlock:
}
static void b43_op_remove_interface(struct ieee80211_hw *hw,
- struct ieee80211_if_init_conf *conf)
+ struct ieee80211_vif *vif)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
struct b43_wldev *dev = wl->current_dev;
- unsigned long flags;
- b43dbg(wl, "Removing Interface type %d\n", conf->type);
+ b43dbg(wl, "Removing Interface type %d\n", vif->type);
mutex_lock(&wl->mutex);
B43_WARN_ON(!wl->operating);
- B43_WARN_ON(wl->vif != conf->vif);
+ B43_WARN_ON(wl->vif != vif);
wl->vif = NULL;
wl->operating = 0;
- spin_lock_irqsave(&wl->irq_lock, flags);
b43_adjust_opmode(dev);
memset(wl->mac_addr, 0, ETH_ALEN);
b43_upload_card_macaddress(dev);
- spin_unlock_irqrestore(&wl->irq_lock, flags);
mutex_unlock(&wl->mutex);
}
cancel_work_sync(&(wl->beacon_update_trigger));
mutex_lock(&wl->mutex);
- if (b43_status(dev) >= B43_STAT_STARTED)
- b43_wireless_core_stop(dev);
+ if (b43_status(dev) >= B43_STAT_STARTED) {
+ dev = b43_wireless_core_stop(dev);
+ if (!dev)
+ goto out_unlock;
+ }
b43_wireless_core_exit(dev);
wl->radio_enabled = 0;
+
+out_unlock:
mutex_unlock(&wl->mutex);
cancel_work_sync(&(wl->txpower_adjust_work));
struct ieee80211_sta *sta, bool set)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
- unsigned long flags;
- spin_lock_irqsave(&wl->irq_lock, flags);
+ /* FIXME: add locking */
b43_update_templates(wl);
- spin_unlock_irqrestore(&wl->irq_lock, flags);
return 0;
}
prev_status = b43_status(dev);
/* Bring the device down... */
- if (prev_status >= B43_STAT_STARTED)
- b43_wireless_core_stop(dev);
+ if (prev_status >= B43_STAT_STARTED) {
+ dev = b43_wireless_core_stop(dev);
+ if (!dev) {
+ err = -ENODEV;
+ goto out;
+ }
+ }
if (prev_status >= B43_STAT_INITIALIZED)
b43_wireless_core_exit(dev);
{
struct b43_wl *wl = dev->wl;
struct ssb_bus *bus = dev->dev->bus;
- struct pci_dev *pdev = bus->host_pci;
+ struct pci_dev *pdev = (bus->bustype == SSB_BUSTYPE_PCI) ? bus->host_pci : NULL;
int err;
bool have_2ghz_phy = 0, have_5ghz_phy = 0;
u32 tmp;
if (!list_empty(&wl->devlist)) {
/* We are not the first core on this chip. */
- pdev = dev->bus->host_pci;
+ pdev = (dev->bus->bustype == SSB_BUSTYPE_PCI) ? dev->bus->host_pci : NULL;
/* Only special chips support more than one wireless
* core, although some of the other chips have more than
* one wireless core as well. Check for this and
wldev->wl = wl;
b43_set_status(wldev, B43_STAT_UNINIT);
wldev->bad_frames_preempt = modparam_bad_frames_preempt;
- tasklet_init(&wldev->isr_tasklet,
- (void (*)(unsigned long))b43_interrupt_tasklet,
- (unsigned long)wldev);
INIT_LIST_HEAD(&wldev->list);
err = b43_wireless_core_attach(wldev);
/* Initialize struct b43_wl */
wl->hw = hw;
- spin_lock_init(&wl->irq_lock);
- rwlock_init(&wl->tx_lock);
- spin_lock_init(&wl->leds_lock);
- spin_lock_init(&wl->shm_lock);
mutex_init(&wl->mutex);
+ spin_lock_init(&wl->hardirq_lock);
INIT_LIST_HEAD(&wl->devlist);
INIT_WORK(&wl->beacon_update_trigger, b43_beacon_update_trigger_work);
INIT_WORK(&wl->txpower_adjust_work, b43_phy_txpower_adjust_work);
+ INIT_WORK(&wl->tx_work, b43_tx_work);
+ skb_queue_head_init(&wl->tx_queue);
ssb_set_devtypedata(dev, wl);
b43info(wl, "Broadcom %04X WLAN found (core revision %u)\n",
err = ieee80211_register_hw(wl->hw);
if (err)
goto err_one_core_detach;
+ b43_leds_register(wl->current_dev);
+ b43_rng_init(wl);
}
out:
* might have modified it. Restoring is important, so the networking
* stack can properly free resources. */
wl->hw->queues = wl->mac80211_initially_registered_queues;
+ b43_leds_stop(wldev);
ieee80211_unregister_hw(wl->hw);
}
b43_one_core_detach(dev);
if (list_empty(&wl->devlist)) {
+ b43_rng_exit(wl);
+ b43_leds_unregister(wl);
/* Last core on the chip unregistered.
* We can destroy common struct b43_wl.
*/
ieee80211_queue_work(dev->wl->hw, &dev->restart_work);
}
-#ifdef CONFIG_PM
-
-static int b43_suspend(struct ssb_device *dev, pm_message_t state)
-{
- struct b43_wldev *wldev = ssb_get_drvdata(dev);
- struct b43_wl *wl = wldev->wl;
-
- b43dbg(wl, "Suspending...\n");
-
- mutex_lock(&wl->mutex);
- wldev->suspend_in_progress = true;
- wldev->suspend_init_status = b43_status(wldev);
- if (wldev->suspend_init_status >= B43_STAT_STARTED)
- b43_wireless_core_stop(wldev);
- if (wldev->suspend_init_status >= B43_STAT_INITIALIZED)
- b43_wireless_core_exit(wldev);
- mutex_unlock(&wl->mutex);
-
- b43dbg(wl, "Device suspended.\n");
-
- return 0;
-}
-
-static int b43_resume(struct ssb_device *dev)
-{
- struct b43_wldev *wldev = ssb_get_drvdata(dev);
- struct b43_wl *wl = wldev->wl;
- int err = 0;
-
- b43dbg(wl, "Resuming...\n");
-
- mutex_lock(&wl->mutex);
- if (wldev->suspend_init_status >= B43_STAT_INITIALIZED) {
- err = b43_wireless_core_init(wldev);
- if (err) {
- b43err(wl, "Resume failed at core init\n");
- goto out;
- }
- }
- if (wldev->suspend_init_status >= B43_STAT_STARTED) {
- err = b43_wireless_core_start(wldev);
- if (err) {
- b43_leds_exit(wldev);
- b43_rng_exit(wldev->wl);
- b43_wireless_core_exit(wldev);
- b43err(wl, "Resume failed at core start\n");
- goto out;
- }
- }
- b43dbg(wl, "Device resumed.\n");
- out:
- wldev->suspend_in_progress = false;
- mutex_unlock(&wl->mutex);
- return err;
-}
-
-#else /* CONFIG_PM */
-# define b43_suspend NULL
-# define b43_resume NULL
-#endif /* CONFIG_PM */
-
static struct ssb_driver b43_ssb_driver = {
.name = KBUILD_MODNAME,
.id_table = b43_ssb_tbl,
.probe = b43_probe,
.remove = b43_remove,
- .suspend = b43_suspend,
- .resume = b43_resume,
};
static void b43_print_driverinfo(void)
{
const char *feat_pci = "", *feat_pcmcia = "", *feat_nphy = "",
- *feat_leds = "";
+ *feat_leds = "", *feat_sdio = "";
#ifdef CONFIG_B43_PCI_AUTOSELECT
feat_pci = "P";
#ifdef CONFIG_B43_LEDS
feat_leds = "L";
#endif
+#ifdef CONFIG_B43_SDIO
+ feat_sdio = "S";
+#endif
printk(KERN_INFO "Broadcom 43xx driver loaded "
- "[ Features: %s%s%s%s, Firmware-ID: "
+ "[ Features: %s%s%s%s%s, Firmware-ID: "
B43_SUPPORTED_FIRMWARE_ID " ]\n",
feat_pci, feat_pcmcia, feat_nphy,
- feat_leds);
+ feat_leds, feat_sdio);
}
static int __init b43_init(void)
err = b43_pcmcia_init();
if (err)
goto err_dfs_exit;
- err = ssb_driver_register(&b43_ssb_driver);
+ err = b43_sdio_init();
if (err)
goto err_pcmcia_exit;
+ err = ssb_driver_register(&b43_ssb_driver);
+ if (err)
+ goto err_sdio_exit;
b43_print_driverinfo();
return err;
+err_sdio_exit:
+ b43_sdio_exit();
err_pcmcia_exit:
b43_pcmcia_exit();
err_dfs_exit:
static void __exit b43_exit(void)
{
ssb_driver_unregister(&b43_ssb_driver);
+ b43_sdio_exit();
b43_pcmcia_exit();
b43_debugfs_exit();
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff