diff options
Diffstat (limited to 'drivers/net/wireless/b43/main.c')
| -rw-r--r-- | drivers/net/wireless/b43/main.c | 42 |
1 files changed, 29 insertions, 13 deletions
diff --git a/drivers/net/wireless/b43/main.c b/drivers/net/wireless/b43/main.c index 84b291144c3..345ac3862e1 100644 --- a/drivers/net/wireless/b43/main.c +++ b/drivers/net/wireless/b43/main.c @@ -252,13 +252,12 @@ static void b43_ram_write(struct b43_wldev *dev, u16 offset, u32 val) b43_write32(dev, B43_MMIO_RAM_DATA, val); } -static inline - void b43_shm_control_word(struct b43_wldev *dev, u16 routing, u16 offset) +static inline void b43_shm_control_word(struct b43_wldev *dev, + u16 routing, u16 offset) { u32 control; /* "offset" is the WORD offset. */ - control = routing; control <<= 16; control |= offset; @@ -267,8 +266,11 @@ static inline 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); if (routing == B43_SHM_SHARED) { B43_WARN_ON(offset & 0x0001); if (offset & 0x0003) { @@ -279,20 +281,25 @@ u32 b43_shm_read32(struct b43_wldev *dev, u16 routing, u16 offset) b43_shm_control_word(dev, routing, (offset >> 2) + 1); ret |= b43_read16(dev, B43_MMIO_SHM_DATA); - return ret; + goto out; } offset >>= 2; } b43_shm_control_word(dev, routing, offset); ret = b43_read32(dev, B43_MMIO_SHM_DATA); +out: + spin_unlock_irqrestore(&wl->shm_lock, flags); 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); if (routing == B43_SHM_SHARED) { B43_WARN_ON(offset & 0x0001); if (offset & 0x0003) { @@ -300,55 +307,63 @@ u16 b43_shm_read16(struct b43_wldev * dev, u16 routing, u16 offset) b43_shm_control_word(dev, routing, offset >> 2); ret = b43_read16(dev, B43_MMIO_SHM_DATA_UNALIGNED); - return ret; + goto out; } offset >>= 2; } b43_shm_control_word(dev, routing, offset); ret = b43_read16(dev, B43_MMIO_SHM_DATA); +out: + spin_unlock_irqrestore(&wl->shm_lock, flags); return ret; } 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); if (routing == B43_SHM_SHARED) { B43_WARN_ON(offset & 0x0001); if (offset & 0x0003) { /* Unaligned access */ b43_shm_control_word(dev, routing, offset >> 2); - mmiowb(); b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED, (value >> 16) & 0xffff); - mmiowb(); b43_shm_control_word(dev, routing, (offset >> 2) + 1); - mmiowb(); b43_write16(dev, B43_MMIO_SHM_DATA, value & 0xffff); - return; + goto out; } offset >>= 2; } b43_shm_control_word(dev, routing, offset); - mmiowb(); b43_write32(dev, B43_MMIO_SHM_DATA, value); +out: + spin_unlock_irqrestore(&wl->shm_lock, flags); } 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); if (routing == B43_SHM_SHARED) { B43_WARN_ON(offset & 0x0001); if (offset & 0x0003) { /* Unaligned access */ b43_shm_control_word(dev, routing, offset >> 2); - mmiowb(); b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED, value); - return; + goto out; } offset >>= 2; } b43_shm_control_word(dev, routing, offset); - mmiowb(); b43_write16(dev, B43_MMIO_SHM_DATA, value); +out: + spin_unlock_irqrestore(&wl->shm_lock, flags); } /* Read HostFlags */ @@ -3931,6 +3946,7 @@ static int b43_wireless_init(struct ssb_device *dev) wl->hw = hw; spin_lock_init(&wl->irq_lock); spin_lock_init(&wl->leds_lock); + spin_lock_init(&wl->shm_lock); mutex_init(&wl->mutex); INIT_LIST_HEAD(&wl->devlist); |