From: Michael Buesch Date: Sat, 11 Mar 2006 12:39:14 +0000 (+0100) Subject: [PATCH] bcm43xx: Abstract the locking mechanism. X-Git-Tag: v2.6.17-rc1~158^2~30 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=efccb647f486ff8174b4db0ab8145df8dd42ce6d;p=linux-2.6 [PATCH] bcm43xx: Abstract the locking mechanism. This is the starting point to make the driver out-of-order-MMIO-stores safe. There are more mmiowb() needed. Signed-off-by: Michael Buesch Signed-off-by: John W. Linville --- diff --git a/drivers/net/wireless/bcm43xx/bcm43xx.h b/drivers/net/wireless/bcm43xx/bcm43xx.h index fd9754b529..5f8c63fab8 100644 --- a/drivers/net/wireless/bcm43xx/bcm43xx.h +++ b/drivers/net/wireless/bcm43xx/bcm43xx.h @@ -619,7 +619,9 @@ struct bcm43xx_private { void __iomem *mmio_addr; unsigned int mmio_len; - spinlock_t lock; + /* Do not use the lock directly. Use the bcm43xx_lock* helper + * functions, to be MMIO-safe. */ + spinlock_t _lock; /* Driver status flags. */ u32 initialized:1, /* init_board() succeed */ @@ -721,6 +723,22 @@ struct bcm43xx_private { #endif }; +/* bcm43xx_(un)lock() protect struct bcm43xx_private. + * Note that _NO_ MMIO writes are allowed. If you want to + * write to the device through MMIO in the critical section, use + * the *_mmio lock functions. + * MMIO read-access is allowed, though. + */ +#define bcm43xx_lock(bcm, flags) spin_lock_irqsave(&(bcm)->_lock, flags) +#define bcm43xx_unlock(bcm, flags) spin_unlock_irqrestore(&(bcm)->_lock, flags) +/* bcm43xx_(un)lock_mmio() protect struct bcm43xx_private and MMIO. + * MMIO write-access to the device is allowed. + * All MMIO writes are flushed on unlock, so it is guaranteed to not + * interfere with other threads writing MMIO registers. + */ +#define bcm43xx_lock_mmio(bcm, flags) bcm43xx_lock(bcm, flags) +#define bcm43xx_unlock_mmio(bcm, flags) do { mmiowb(); bcm43xx_unlock(bcm, flags); } while (0) + static inline struct bcm43xx_private * bcm43xx_priv(struct net_device *dev) { diff --git a/drivers/net/wireless/bcm43xx/bcm43xx_debugfs.c b/drivers/net/wireless/bcm43xx/bcm43xx_debugfs.c index 0bae0be4be..bcfcebe282 100644 --- a/drivers/net/wireless/bcm43xx/bcm43xx_debugfs.c +++ b/drivers/net/wireless/bcm43xx/bcm43xx_debugfs.c @@ -77,7 +77,7 @@ static ssize_t devinfo_read_file(struct file *file, char __user *userbuf, down(&big_buffer_sem); - spin_lock_irqsave(&bcm->lock, flags); + bcm43xx_lock_mmio(bcm, flags); if (!bcm->initialized) { fappend("Board not initialized.\n"); goto out; @@ -124,7 +124,7 @@ static ssize_t devinfo_read_file(struct file *file, char __user *userbuf, fappend("\n"); out: - spin_unlock_irqrestore(&bcm->lock, flags); + bcm43xx_unlock_mmio(bcm, flags); res = simple_read_from_buffer(userbuf, count, ppos, buf, pos); up(&big_buffer_sem); return res; @@ -162,7 +162,7 @@ static ssize_t spromdump_read_file(struct file *file, char __user *userbuf, unsigned long flags; down(&big_buffer_sem); - spin_lock_irqsave(&bcm->lock, flags); + bcm43xx_lock_mmio(bcm, flags); if (!bcm->initialized) { fappend("Board not initialized.\n"); goto out; @@ -172,7 +172,7 @@ static ssize_t spromdump_read_file(struct file *file, char __user *userbuf, fappend("boardflags: 0x%04x\n", bcm->sprom.boardflags); out: - spin_unlock_irqrestore(&bcm->lock, flags); + bcm43xx_unlock_mmio(bcm, flags); res = simple_read_from_buffer(userbuf, count, ppos, buf, pos); up(&big_buffer_sem); return res; @@ -191,7 +191,7 @@ static ssize_t tsf_read_file(struct file *file, char __user *userbuf, u64 tsf; down(&big_buffer_sem); - spin_lock_irqsave(&bcm->lock, flags); + bcm43xx_lock_mmio(bcm, flags); if (!bcm->initialized) { fappend("Board not initialized.\n"); goto out; @@ -202,7 +202,7 @@ static ssize_t tsf_read_file(struct file *file, char __user *userbuf, (unsigned int)(tsf & 0xFFFFFFFFULL)); out: - spin_unlock_irqrestore(&bcm->lock, flags); + bcm43xx_unlock_mmio(bcm, flags); res = simple_read_from_buffer(userbuf, count, ppos, buf, pos); up(&big_buffer_sem); return res; @@ -224,7 +224,7 @@ static ssize_t tsf_write_file(struct file *file, const char __user *user_buf, res = -EFAULT; goto out_up; } - spin_lock_irqsave(&bcm->lock, flags); + bcm43xx_lock_mmio(bcm, flags); if (!bcm->initialized) { printk(KERN_INFO PFX "debugfs: Board not initialized.\n"); res = -EFAULT; @@ -239,7 +239,7 @@ static ssize_t tsf_write_file(struct file *file, const char __user *user_buf, res = buf_size; out_unlock: - spin_unlock_irqrestore(&bcm->lock, flags); + bcm43xx_unlock_mmio(bcm, flags); out_up: up(&big_buffer_sem); return res; @@ -260,7 +260,7 @@ static ssize_t txstat_read_file(struct file *file, char __user *userbuf, int i, cnt, j = 0; down(&big_buffer_sem); - spin_lock_irqsave(&bcm->lock, flags); + bcm43xx_lock(bcm, flags); fappend("Last %d logged xmitstatus blobs (Latest first):\n\n", BCM43xx_NR_LOGGED_XMITSTATUS); @@ -296,14 +296,14 @@ static ssize_t txstat_read_file(struct file *file, char __user *userbuf, i = BCM43xx_NR_LOGGED_XMITSTATUS - 1; } - spin_unlock_irqrestore(&bcm->lock, flags); + bcm43xx_unlock(bcm, flags); res = simple_read_from_buffer(userbuf, count, ppos, buf, pos); - spin_lock_irqsave(&bcm->lock, flags); + bcm43xx_lock(bcm, flags); if (*ppos == pos) { /* Done. Drop the copied data. */ e->xmitstatus_printing = 0; } - spin_unlock_irqrestore(&bcm->lock, flags); + bcm43xx_unlock(bcm, flags); up(&big_buffer_sem); return res; } @@ -419,7 +419,7 @@ void bcm43xx_debugfs_log_txstat(struct bcm43xx_private *bcm, struct bcm43xx_dfsentry *e; struct bcm43xx_xmitstatus *savedstatus; - /* This is protected by bcm->lock */ + /* This is protected by bcm->_lock */ e = bcm->dfsentry; assert(e); savedstatus = e->xmitstatus_buffer + e->xmitstatus_ptr; diff --git a/drivers/net/wireless/bcm43xx/bcm43xx_leds.c b/drivers/net/wireless/bcm43xx/bcm43xx_leds.c index 8f550c1a92..949555da5a 100644 --- a/drivers/net/wireless/bcm43xx/bcm43xx_leds.c +++ b/drivers/net/wireless/bcm43xx/bcm43xx_leds.c @@ -51,12 +51,12 @@ static void bcm43xx_led_blink(unsigned long d) struct bcm43xx_private *bcm = led->bcm; unsigned long flags; - spin_lock_irqsave(&bcm->lock, flags); + bcm43xx_lock_mmio(bcm, flags); if (led->blink_interval) { bcm43xx_led_changestate(led); mod_timer(&led->blink_timer, jiffies + led->blink_interval); } - spin_unlock_irqrestore(&bcm->lock, flags); + bcm43xx_unlock_mmio(bcm, flags); } static void bcm43xx_led_blink_start(struct bcm43xx_led *led, diff --git a/drivers/net/wireless/bcm43xx/bcm43xx_main.c b/drivers/net/wireless/bcm43xx/bcm43xx_main.c index 6da0beb0a9..b719255983 100644 --- a/drivers/net/wireless/bcm43xx/bcm43xx_main.c +++ b/drivers/net/wireless/bcm43xx/bcm43xx_main.c @@ -482,14 +482,14 @@ static int bcm43xx_disable_interrupts_sync(struct bcm43xx_private *bcm, u32 *old u32 old; unsigned long flags; - spin_lock_irqsave(&bcm->lock, flags); + bcm43xx_lock_mmio(bcm, flags); if (bcm43xx_is_initializing(bcm) || bcm->shutting_down) { - spin_unlock_irqrestore(&bcm->lock, flags); + bcm43xx_unlock_mmio(bcm, flags); return -EBUSY; } old = bcm43xx_interrupt_disable(bcm, BCM43xx_IRQ_ALL); tasklet_disable(&bcm->isr_tasklet); - spin_unlock_irqrestore(&bcm->lock, flags); + bcm43xx_unlock_mmio(bcm, flags); if (oldstate) *oldstate = old; @@ -746,6 +746,7 @@ int bcm43xx_sprom_write(struct bcm43xx_private *bcm, const u16 *sprom) else if (i % 2) printk("."); bcm43xx_write16(bcm, BCM43xx_SPROM_BASE + (i * 2), sprom[i]); + mmiowb(); mdelay(20); } spromctl &= ~0x10; /* SPROM WRITE enable. */ @@ -1676,7 +1677,7 @@ static void bcm43xx_interrupt_tasklet(struct bcm43xx_private *bcm) # define bcmirq_handled(irq) do { /* nothing */ } while (0) #endif /* CONFIG_BCM43XX_DEBUG*/ - spin_lock_irqsave(&bcm->lock, flags); + bcm43xx_lock_mmio(bcm, flags); reason = bcm->irq_reason; dma_reason[0] = bcm->dma_reason[0]; dma_reason[1] = bcm->dma_reason[1]; @@ -1776,7 +1777,7 @@ static void bcm43xx_interrupt_tasklet(struct bcm43xx_private *bcm) if (!modparam_noleds) bcm43xx_leds_update(bcm, activity); bcm43xx_interrupt_enable(bcm, bcm->irq_savedstate); - spin_unlock_irqrestore(&bcm->lock, flags); + bcm43xx_unlock_mmio(bcm, flags); } #undef bcmirq_print_reasons @@ -1830,25 +1831,24 @@ static void bcm43xx_interrupt_ack(struct bcm43xx_private *bcm, /* Interrupt handler top-half */ static irqreturn_t bcm43xx_interrupt_handler(int irq, void *dev_id, struct pt_regs *regs) { + irqreturn_t ret = IRQ_HANDLED; struct bcm43xx_private *bcm = dev_id; u32 reason, mask; if (!bcm) return IRQ_NONE; - spin_lock(&bcm->lock); + spin_lock(&bcm->_lock); reason = bcm43xx_read32(bcm, BCM43xx_MMIO_GEN_IRQ_REASON); if (reason == 0xffffffff) { /* irq not for us (shared irq) */ - spin_unlock(&bcm->lock); - return IRQ_NONE; + ret = IRQ_NONE; + goto out; } mask = bcm43xx_read32(bcm, BCM43xx_MMIO_GEN_IRQ_MASK); - if (!(reason & mask)) { - spin_unlock(&bcm->lock); - return IRQ_HANDLED; - } + if (!(reason & mask)) + goto out; bcm43xx_interrupt_ack(bcm, reason, mask); @@ -1866,9 +1866,11 @@ static irqreturn_t bcm43xx_interrupt_handler(int irq, void *dev_id, struct pt_re tasklet_schedule(&bcm->isr_tasklet); } - spin_unlock(&bcm->lock); +out: + mmiowb(); + spin_unlock(&bcm->_lock); - return IRQ_HANDLED; + return ret; } static void bcm43xx_release_firmware(struct bcm43xx_private *bcm, int force) @@ -3112,7 +3114,7 @@ static void bcm43xx_periodic_task_handler(unsigned long d) unsigned long flags; unsigned int state; - spin_lock_irqsave(&bcm->lock, flags); + bcm43xx_lock_mmio(bcm, flags); assert(bcm->initialized); state = bcm->periodic_state; @@ -3127,7 +3129,7 @@ static void bcm43xx_periodic_task_handler(unsigned long d) mod_timer(&bcm->periodic_tasks, jiffies + (HZ * 15)); - spin_unlock_irqrestore(&bcm->lock, flags); + bcm43xx_unlock_mmio(bcm, flags); } static void bcm43xx_periodic_tasks_delete(struct bcm43xx_private *bcm) @@ -3164,10 +3166,10 @@ static void bcm43xx_free_board(struct bcm43xx_private *bcm) bcm43xx_periodic_tasks_delete(bcm); - spin_lock_irqsave(&bcm->lock, flags); + bcm43xx_lock(bcm, flags); bcm->initialized = 0; bcm->shutting_down = 1; - spin_unlock_irqrestore(&bcm->lock, flags); + bcm43xx_unlock(bcm, flags); for (i = 0; i < BCM43xx_MAX_80211_CORES; i++) { if (!(bcm->core_80211[i].flags & BCM43xx_COREFLAG_AVAILABLE)) @@ -3182,9 +3184,9 @@ static void bcm43xx_free_board(struct bcm43xx_private *bcm) bcm43xx_pctl_set_crystal(bcm, 0); - spin_lock_irqsave(&bcm->lock, flags); + bcm43xx_lock(bcm, flags); bcm->shutting_down = 0; - spin_unlock_irqrestore(&bcm->lock, flags); + bcm43xx_unlock(bcm, flags); } static int bcm43xx_init_board(struct bcm43xx_private *bcm) @@ -3196,10 +3198,10 @@ static int bcm43xx_init_board(struct bcm43xx_private *bcm) might_sleep(); - spin_lock_irqsave(&bcm->lock, flags); + bcm43xx_lock(bcm, flags); bcm->initialized = 0; bcm->shutting_down = 0; - spin_unlock_irqrestore(&bcm->lock, flags); + bcm43xx_unlock(bcm, flags); err = bcm43xx_pctl_set_crystal(bcm, 1); if (err) @@ -3267,9 +3269,9 @@ static int bcm43xx_init_board(struct bcm43xx_private *bcm) } /* Initialization of the board is done. Flag it as such. */ - spin_lock_irqsave(&bcm->lock, flags); + bcm43xx_lock(bcm, flags); bcm->initialized = 1; - spin_unlock_irqrestore(&bcm->lock, flags); + bcm43xx_unlock(bcm, flags); bcm43xx_periodic_tasks_setup(bcm); bcm43xx_sysfs_register(bcm); @@ -3570,11 +3572,11 @@ static void bcm43xx_ieee80211_set_chan(struct net_device *net_dev, struct bcm43xx_private *bcm = bcm43xx_priv(net_dev); unsigned long flags; - spin_lock_irqsave(&bcm->lock, flags); + bcm43xx_lock_mmio(bcm, flags); bcm43xx_mac_suspend(bcm); bcm43xx_radio_selectchannel(bcm, channel, 0); bcm43xx_mac_enable(bcm); - spin_unlock_irqrestore(&bcm->lock, flags); + bcm43xx_unlock_mmio(bcm, flags); } /* set_security() callback in struct ieee80211_device */ @@ -3587,9 +3589,9 @@ static void bcm43xx_ieee80211_set_security(struct net_device *net_dev, int keyidx; dprintk(KERN_INFO PFX "set security called\n"); - - spin_lock_irqsave(&bcm->lock, flags); - + + bcm43xx_lock_mmio(bcm, flags); + for (keyidx = 0; keyidxflags & (1<encode_alg[keyidx] = sec->encode_alg[keyidx]; @@ -3651,7 +3653,7 @@ static void bcm43xx_ieee80211_set_security(struct net_device *net_dev, } else bcm43xx_clear_keys(bcm); } - spin_unlock_irqrestore(&bcm->lock, flags); + bcm43xx_unlock_mmio(bcm, flags); } /* hard_start_xmit() callback in struct ieee80211_device */ @@ -3663,10 +3665,10 @@ static int bcm43xx_ieee80211_hard_start_xmit(struct ieee80211_txb *txb, int err = -ENODEV; unsigned long flags; - spin_lock_irqsave(&bcm->lock, flags); + bcm43xx_lock_mmio(bcm, flags); if (likely(bcm->initialized)) err = bcm43xx_tx(bcm, txb); - spin_unlock_irqrestore(&bcm->lock, flags); + bcm43xx_unlock_mmio(bcm, flags); return err; } @@ -3679,8 +3681,11 @@ static struct net_device_stats * bcm43xx_net_get_stats(struct net_device *net_de static void bcm43xx_net_tx_timeout(struct net_device *net_dev) { struct bcm43xx_private *bcm = bcm43xx_priv(net_dev); + unsigned long flags; + bcm43xx_lock_mmio(bcm, flags); bcm43xx_controller_restart(bcm, "TX timeout"); + bcm43xx_unlock_mmio(bcm, flags); } #ifdef CONFIG_NET_POLL_CONTROLLER @@ -3738,7 +3743,7 @@ static int bcm43xx_init_private(struct bcm43xx_private *bcm, bcm->pci_dev = pci_dev; bcm->net_dev = net_dev; bcm->bad_frames_preempt = modparam_bad_frames_preempt; - spin_lock_init(&bcm->lock); + spin_lock_init(&bcm->_lock); tasklet_init(&bcm->isr_tasklet, (void (*)(unsigned long))bcm43xx_interrupt_tasklet, (unsigned long)bcm); @@ -3921,11 +3926,11 @@ static int bcm43xx_suspend(struct pci_dev *pdev, pm_message_t state) dprintk(KERN_INFO PFX "Suspending...\n"); - spin_lock_irqsave(&bcm->lock, flags); + bcm43xx_lock(bcm, flags); bcm->was_initialized = bcm->initialized; if (bcm->initialized) try_to_shutdown = 1; - spin_unlock_irqrestore(&bcm->lock, flags); + bcm43xx_unlock(bcm, flags); netif_device_detach(net_dev); if (try_to_shutdown) { diff --git a/drivers/net/wireless/bcm43xx/bcm43xx_pio.c b/drivers/net/wireless/bcm43xx/bcm43xx_pio.c index 7b45fa1314..26dc6047d4 100644 --- a/drivers/net/wireless/bcm43xx/bcm43xx_pio.c +++ b/drivers/net/wireless/bcm43xx/bcm43xx_pio.c @@ -258,7 +258,7 @@ static void tx_tasklet(unsigned long d) struct bcm43xx_pio_txpacket *packet, *tmp_packet; int err; - spin_lock_irqsave(&bcm->lock, flags); + bcm43xx_lock_mmio(bcm, flags); list_for_each_entry_safe(packet, tmp_packet, &queue->txqueue, list) { assert(packet->xmitted_frags < packet->txb->nr_frags); if (packet->xmitted_frags == 0) { @@ -288,7 +288,7 @@ static void tx_tasklet(unsigned long d) next_packet: continue; } - spin_unlock_irqrestore(&bcm->lock, flags); + bcm43xx_unlock_mmio(bcm, flags); } static void setup_txqueues(struct bcm43xx_pioqueue *queue) diff --git a/drivers/net/wireless/bcm43xx/bcm43xx_sysfs.c b/drivers/net/wireless/bcm43xx/bcm43xx_sysfs.c index 2d31737372..713ec601c3 100644 --- a/drivers/net/wireless/bcm43xx/bcm43xx_sysfs.c +++ b/drivers/net/wireless/bcm43xx/bcm43xx_sysfs.c @@ -88,7 +88,7 @@ static ssize_t bcm43xx_attr_sprom_show(struct device *dev, GFP_KERNEL); if (!sprom) return -ENOMEM; - spin_lock_irqsave(&bcm->lock, flags); + bcm43xx_lock_mmio(bcm, flags); assert(bcm->initialized); err = bcm43xx_sprom_read(bcm, sprom); if (!err) { @@ -97,7 +97,7 @@ static ssize_t bcm43xx_attr_sprom_show(struct device *dev, buf[i * 2 + 1] = (sprom[i] & 0xFF00) >> 8; } } - spin_unlock_irqrestore(&bcm->lock, flags); + bcm43xx_unlock_mmio(bcm, flags); kfree(sprom); return err ? err : BCM43xx_SPROM_SIZE * sizeof(u16); @@ -125,10 +125,10 @@ static ssize_t bcm43xx_attr_sprom_store(struct device *dev, sprom[i] = buf[i * 2] & 0xFF; sprom[i] |= ((u16)(buf[i * 2 + 1] & 0xFF)) << 8; } - spin_lock_irqsave(&bcm->lock, flags); + bcm43xx_lock_mmio(bcm, flags); assert(bcm->initialized); err = bcm43xx_sprom_write(bcm, sprom); - spin_unlock_irqrestore(&bcm->lock, flags); + bcm43xx_unlock_mmio(bcm, flags); kfree(sprom); return err ? err : count; @@ -147,7 +147,7 @@ static ssize_t bcm43xx_attr_interfmode_show(struct device *dev, if (!capable(CAP_NET_ADMIN)) return -EPERM; - spin_lock_irqsave(&bcm->lock, flags); + bcm43xx_lock(bcm, flags); assert(bcm->initialized); switch (bcm->current_core->radio->interfmode) { @@ -165,7 +165,8 @@ static ssize_t bcm43xx_attr_interfmode_show(struct device *dev, } err = 0; - spin_unlock_irqrestore(&bcm->lock, flags); + bcm43xx_unlock(bcm, flags); + return err ? err : count; } @@ -200,7 +201,7 @@ static ssize_t bcm43xx_attr_interfmode_store(struct device *dev, return -EINVAL; } - spin_lock_irqsave(&bcm->lock, flags); + bcm43xx_lock_mmio(bcm, flags); assert(bcm->initialized); err = bcm43xx_radio_set_interference_mitigation(bcm, mode); @@ -209,7 +210,7 @@ static ssize_t bcm43xx_attr_interfmode_store(struct device *dev, "supported by device\n"); } - spin_unlock_irqrestore(&bcm->lock, flags); + bcm43xx_unlock_mmio(bcm, flags); return err ? err : count; } @@ -226,7 +227,7 @@ static ssize_t bcm43xx_attr_preamble_show(struct device *dev, if (!capable(CAP_NET_ADMIN)) return -EPERM; - spin_lock_irqsave(&bcm->lock, flags); + bcm43xx_lock(bcm, flags); assert(bcm->initialized); if (bcm->short_preamble) @@ -235,7 +236,7 @@ static ssize_t bcm43xx_attr_preamble_show(struct device *dev, count = snprintf(buf, PAGE_SIZE, "0 (Short Preamble disabled)\n"); err = 0; - spin_unlock_irqrestore(&bcm->lock, flags); + bcm43xx_unlock(bcm, flags); return err ? err : count; } @@ -255,13 +256,13 @@ static ssize_t bcm43xx_attr_preamble_store(struct device *dev, value = get_boolean(buf, count); if (value < 0) return value; - spin_lock_irqsave(&bcm->lock, flags); + bcm43xx_lock(bcm, flags); assert(bcm->initialized); bcm->short_preamble = !!value; err = 0; - spin_unlock_irqrestore(&bcm->lock, flags); + bcm43xx_unlock(bcm, flags); return err ? err : count; } diff --git a/drivers/net/wireless/bcm43xx/bcm43xx_wx.c b/drivers/net/wireless/bcm43xx/bcm43xx_wx.c index aa2d9930c4..208193851e 100644 --- a/drivers/net/wireless/bcm43xx/bcm43xx_wx.c +++ b/drivers/net/wireless/bcm43xx/bcm43xx_wx.c @@ -61,7 +61,7 @@ static int bcm43xx_wx_get_name(struct net_device *net_dev, char suffix[7] = { 0 }; int have_a = 0, have_b = 0, have_g = 0; - spin_lock_irqsave(&bcm->lock, flags); + bcm43xx_lock(bcm, flags); nr_80211 = bcm43xx_num_80211_cores(bcm); for (i = 0; i < nr_80211; i++) { phy = bcm->phy + i; @@ -78,7 +78,7 @@ static int bcm43xx_wx_get_name(struct net_device *net_dev, assert(0); } } - spin_unlock_irqrestore(&bcm->lock, flags); + bcm43xx_unlock(bcm, flags); i = 0; if (have_a) { @@ -113,7 +113,7 @@ static int bcm43xx_wx_set_channelfreq(struct net_device *net_dev, int freq; int err = -EINVAL; - spin_lock_irqsave(&bcm->lock, flags); + bcm43xx_lock_mmio(bcm, flags); if ((data->freq.m >= 0) && (data->freq.m <= 1000)) { channel = data->freq.m; freq = bcm43xx_channel_to_freq(bcm, channel); @@ -133,7 +133,7 @@ static int bcm43xx_wx_set_channelfreq(struct net_device *net_dev, err = 0; } out_unlock: - spin_unlock_irqrestore(&bcm->lock, flags); + bcm43xx_unlock_mmio(bcm, flags); return err; } @@ -148,7 +148,7 @@ static int bcm43xx_wx_get_channelfreq(struct net_device *net_dev, int err = -ENODEV; u16 channel; - spin_lock_irqsave(&bcm->lock, flags); + bcm43xx_lock(bcm, flags); channel = bcm->current_core->radio->channel; if (channel == 0xFF) { assert(!bcm->initialized); @@ -163,7 +163,7 @@ static int bcm43xx_wx_get_channelfreq(struct net_device *net_dev, err = 0; out_unlock: - spin_unlock_irqrestore(&bcm->lock, flags); + bcm43xx_unlock(bcm, flags); return err; } @@ -181,10 +181,10 @@ static int bcm43xx_wx_set_mode(struct net_device *net_dev, if (mode == IW_MODE_AUTO) mode = BCM43xx_INITIAL_IWMODE; - spin_lock_irqsave(&bcm->lock, flags); + bcm43xx_lock_mmio(bcm, flags); if (bcm->ieee->iw_mode != mode) bcm43xx_set_iwmode(bcm, mode); - spin_unlock_irqrestore(&bcm->lock, flags); + bcm43xx_unlock_mmio(bcm, flags); return 0; } @@ -197,9 +197,9 @@ static int bcm43xx_wx_get_mode(struct net_device *net_dev, struct bcm43xx_private *bcm = bcm43xx_priv(net_dev); unsigned long flags; - spin_lock_irqsave(&bcm->lock, flags); + bcm43xx_lock(bcm, flags); data->mode = bcm->ieee->iw_mode; - spin_unlock_irqrestore(&bcm->lock, flags); + bcm43xx_unlock(bcm, flags); return 0; } @@ -269,7 +269,7 @@ static int bcm43xx_wx_get_rangeparams(struct net_device *net_dev, IW_ENC_CAPA_CIPHER_TKIP | IW_ENC_CAPA_CIPHER_CCMP; - spin_lock_irqsave(&bcm->lock, flags); + bcm43xx_lock(bcm, flags); range->num_bitrates = 0; i = 0; @@ -315,7 +315,7 @@ static int bcm43xx_wx_get_rangeparams(struct net_device *net_dev, } range->num_frequency = j; - spin_unlock_irqrestore(&bcm->lock, flags); + bcm43xx_unlock(bcm, flags); return 0; } @@ -329,11 +329,11 @@ static int bcm43xx_wx_set_nick(struct net_device *net_dev, unsigned long flags; size_t len; - spin_lock_irqsave(&bcm->lock, flags); + bcm43xx_lock(bcm, flags); len = min((size_t)data->data.length, (size_t)IW_ESSID_MAX_SIZE); memcpy(bcm->nick, extra, len); bcm->nick[len] = '\0'; - spin_unlock_irqrestore(&bcm->lock, flags); + bcm43xx_unlock(bcm, flags); return 0; } @@ -347,12 +347,12 @@ static int bcm43xx_wx_get_nick(struct net_device *net_dev, unsigned long flags; size_t len; - spin_lock_irqsave(&bcm->lock, flags); + bcm43xx_lock(bcm, flags); len = strlen(bcm->nick) + 1; memcpy(extra, bcm->nick, len); data->data.length = (__u16)len; data->data.flags = 1; - spin_unlock_irqrestore(&bcm->lock, flags); + bcm43xx_unlock(bcm, flags); return 0; } @@ -366,7 +366,7 @@ static int bcm43xx_wx_set_rts(struct net_device *net_dev, unsigned long flags; int err = -EINVAL; - spin_lock_irqsave(&bcm->lock, flags); + bcm43xx_lock(bcm, flags); if (data->rts.disabled) { bcm->rts_threshold = BCM43xx_MAX_RTS_THRESHOLD; err = 0; @@ -377,7 +377,7 @@ static int bcm43xx_wx_set_rts(struct net_device *net_dev, err = 0; } } - spin_unlock_irqrestore(&bcm->lock, flags); + bcm43xx_unlock(bcm, flags); return err; } @@ -390,11 +390,11 @@ static int bcm43xx_wx_get_rts(struct net_device *net_dev, struct bcm43xx_private *bcm = bcm43xx_priv(net_dev); unsigned long flags; - spin_lock_irqsave(&bcm->lock, flags); + bcm43xx_lock(bcm, flags); data->rts.value = bcm->rts_threshold; data->rts.fixed = 0; data->rts.disabled = (bcm->rts_threshold == BCM43xx_MAX_RTS_THRESHOLD); - spin_unlock_irqrestore(&bcm->lock, flags); + bcm43xx_unlock(bcm, flags); return 0; } @@ -408,7 +408,7 @@ static int bcm43xx_wx_set_frag(struct net_device *net_dev, unsigned long flags; int err = -EINVAL; - spin_lock_irqsave(&bcm->lock, flags); + bcm43xx_lock(bcm, flags); if (data->frag.disabled) { bcm->ieee->fts = MAX_FRAG_THRESHOLD; err = 0; @@ -419,7 +419,7 @@ static int bcm43xx_wx_set_frag(struct net_device *net_dev, err = 0; } } - spin_unlock_irqrestore(&bcm->lock, flags); + bcm43xx_unlock(bcm, flags); return err; } @@ -432,11 +432,11 @@ static int bcm43xx_wx_get_frag(struct net_device *net_dev, struct bcm43xx_private *bcm = bcm43xx_priv(net_dev); unsigned long flags; - spin_lock_irqsave(&bcm->lock, flags); + bcm43xx_lock(bcm, flags); data->frag.value = bcm->ieee->fts; data->frag.fixed = 0; data->frag.disabled = (bcm->ieee->fts == MAX_FRAG_THRESHOLD); - spin_unlock_irqrestore(&bcm->lock, flags); + bcm43xx_unlock(bcm, flags); return 0; } @@ -458,7 +458,7 @@ static int bcm43xx_wx_set_xmitpower(struct net_device *net_dev, return -EOPNOTSUPP; } - spin_lock_irqsave(&bcm->lock, flags); + bcm43xx_lock_mmio(bcm, flags); if (!bcm->initialized) goto out_unlock; radio = bcm->current_core->radio; @@ -482,7 +482,7 @@ static int bcm43xx_wx_set_xmitpower(struct net_device *net_dev, err = 0; out_unlock: - spin_unlock_irqrestore(&bcm->lock, flags); + bcm43xx_unlock_mmio(bcm, flags); return err; } @@ -497,7 +497,7 @@ static int bcm43xx_wx_get_xmitpower(struct net_device *net_dev, unsigned long flags; int err = -ENODEV; - spin_lock_irqsave(&bcm->lock, flags); + bcm43xx_lock(bcm, flags); if (!bcm->initialized) goto out_unlock; radio = bcm->current_core->radio; @@ -509,7 +509,7 @@ static int bcm43xx_wx_get_xmitpower(struct net_device *net_dev, err = 0; out_unlock: - spin_unlock_irqrestore(&bcm->lock, flags); + bcm43xx_unlock(bcm, flags); return err; } @@ -632,7 +632,7 @@ static int bcm43xx_wx_set_interfmode(struct net_device *net_dev, return -EINVAL; } - spin_lock_irqsave(&bcm->lock, flags); + bcm43xx_lock_mmio(bcm, flags); if (bcm->initialized) { err = bcm43xx_radio_set_interference_mitigation(bcm, mode); if (err) { @@ -647,7 +647,7 @@ static int bcm43xx_wx_set_interfmode(struct net_device *net_dev, } else bcm->current_core->radio->interfmode = mode; } - spin_unlock_irqrestore(&bcm->lock, flags); + bcm43xx_unlock_mmio(bcm, flags); return err; } @@ -661,9 +661,9 @@ static int bcm43xx_wx_get_interfmode(struct net_device *net_dev, unsigned long flags; int mode; - spin_lock_irqsave(&bcm->lock, flags); + bcm43xx_lock(bcm, flags); mode = bcm->current_core->radio->interfmode; - spin_unlock_irqrestore(&bcm->lock, flags); + bcm43xx_unlock(bcm, flags); switch (mode) { case BCM43xx_RADIO_INTERFMODE_NONE: @@ -693,9 +693,9 @@ static int bcm43xx_wx_set_shortpreamble(struct net_device *net_dev, int on; on = *((int *)extra); - spin_lock_irqsave(&bcm->lock, flags); + bcm43xx_lock(bcm, flags); bcm->short_preamble = !!on; - spin_unlock_irqrestore(&bcm->lock, flags); + bcm43xx_unlock(bcm, flags); return 0; } @@ -709,9 +709,9 @@ static int bcm43xx_wx_get_shortpreamble(struct net_device *net_dev, unsigned long flags; int on; - spin_lock_irqsave(&bcm->lock, flags); + bcm43xx_lock(bcm, flags); on = bcm->short_preamble; - spin_unlock_irqrestore(&bcm->lock, flags); + bcm43xx_unlock(bcm, flags); if (on) strncpy(extra, "1 (Short Preamble enabled)", MAX_WX_STRING); @@ -732,13 +732,13 @@ static int bcm43xx_wx_set_swencryption(struct net_device *net_dev, int on; on = *((int *)extra); - spin_lock_irqsave(&bcm->lock, flags); + + bcm43xx_lock(bcm, flags); bcm->ieee->host_encrypt = !!on; bcm->ieee->host_decrypt = !!on; bcm->ieee->host_build_iv = !on; - - spin_unlock_irqrestore(&bcm->lock, flags); - + bcm43xx_unlock(bcm, flags); + return 0; } @@ -750,17 +750,17 @@ static int bcm43xx_wx_get_swencryption(struct net_device *net_dev, struct bcm43xx_private *bcm = bcm43xx_priv(net_dev); unsigned long flags; int on; - - spin_lock_irqsave(&bcm->lock, flags); + + bcm43xx_lock(bcm, flags); on = bcm->ieee->host_encrypt; - spin_unlock_irqrestore(&bcm->lock, flags); - + bcm43xx_unlock(bcm, flags); + if (on) strncpy(extra, "1 (SW encryption enabled) ", MAX_WX_STRING); else strncpy(extra, "0 (SW encryption disabled) ", MAX_WX_STRING); data->data.length = strlen(extra + 1); - + return 0; } @@ -816,17 +816,13 @@ static int bcm43xx_wx_sprom_read(struct net_device *net_dev, if (!sprom) goto out; - spin_lock_irqsave(&bcm->lock, flags); + bcm43xx_lock_mmio(bcm, flags); err = -ENODEV; - if (!bcm->initialized) { - spin_unlock_irqrestore(&bcm->lock, flags); - goto out_kfree; - } - err = bcm43xx_sprom_read(bcm, sprom); - spin_unlock_irqrestore(&bcm->lock, flags); + if (bcm->initialized) + err = bcm43xx_sprom_read(bcm, sprom); + bcm43xx_unlock_mmio(bcm, flags); if (!err) data->data.length = sprom2hex(sprom, extra); -out_kfree: kfree(sprom); out: return err; @@ -865,13 +861,11 @@ static int bcm43xx_wx_sprom_write(struct net_device *net_dev, if (err) goto out_kfree; - spin_lock_irqsave(&bcm->lock, flags); + bcm43xx_lock_mmio(bcm, flags); err = -ENODEV; - if (!bcm->initialized) - goto out_unlock; - err = bcm43xx_sprom_write(bcm, sprom); -out_unlock: - spin_unlock_irqrestore(&bcm->lock, flags); + if (bcm->initialized) + err = bcm43xx_sprom_write(bcm, sprom); + bcm43xx_unlock_mmio(bcm, flags); out_kfree: kfree(sprom); out: