diff options
Diffstat (limited to 'drivers/net/wireless/b43')
-rw-r--r-- | drivers/net/wireless/b43/b43.h | 10 | ||||
-rw-r--r-- | drivers/net/wireless/b43/dma.c | 82 | ||||
-rw-r--r-- | drivers/net/wireless/b43/main.c | 42 |
3 files changed, 92 insertions, 42 deletions
diff --git a/drivers/net/wireless/b43/b43.h b/drivers/net/wireless/b43/b43.h index c8295b35999..c7eea30aa94 100644 --- a/drivers/net/wireless/b43/b43.h +++ b/drivers/net/wireless/b43/b43.h @@ -170,14 +170,17 @@ enum { #define B43_SHM_SH_SLOTT 0x0010 /* Slot time */ #define B43_SHM_SH_DTIMPER 0x0012 /* DTIM period */ #define B43_SHM_SH_NOSLPZNATDTIM 0x004C /* NOSLPZNAT DTIM */ -/* SHM_SHARED beacon variables */ +/* SHM_SHARED beacon/AP variables */ #define B43_SHM_SH_BTL0 0x0018 /* Beacon template length 0 */ #define B43_SHM_SH_BTL1 0x001A /* Beacon template length 1 */ #define B43_SHM_SH_BTSFOFF 0x001C /* Beacon TSF offset */ #define B43_SHM_SH_TIMBPOS 0x001E /* TIM B position in beacon */ +#define B43_SHM_SH_DTIMP 0x0012 /* DTIP period */ +#define B43_SHM_SH_MCASTCOOKIE 0x00A8 /* Last bcast/mcast frame ID */ #define B43_SHM_SH_SFFBLIM 0x0044 /* Short frame fallback retry limit */ #define B43_SHM_SH_LFFBLIM 0x0046 /* Long frame fallback retry limit */ #define B43_SHM_SH_BEACPHYCTL 0x0054 /* Beacon PHY TX control word (see PHY TX control) */ +#define B43_SHM_SH_EXTNPHYCTL 0x00B0 /* Extended bytes for beacon PHY control (N) */ /* SHM_SHARED ACK/CTS control */ #define B43_SHM_SH_ACKCTSPHYCTL 0x0022 /* ACK/CTS PHY control word (see PHY TX control) */ /* SHM_SHARED probe response variables */ @@ -617,9 +620,12 @@ struct b43_wl { /* Pointer to the ieee80211 hardware data structure */ struct ieee80211_hw *hw; - spinlock_t irq_lock; struct mutex mutex; + spinlock_t irq_lock; + /* Lock for LEDs access. */ spinlock_t leds_lock; + /* Lock for SHM access. */ + spinlock_t shm_lock; /* We can only have one operating interface (802.11 core) * at a time. General information about this interface follows. diff --git a/drivers/net/wireless/b43/dma.c b/drivers/net/wireless/b43/dma.c index 63217b1e312..cf92853a218 100644 --- a/drivers/net/wireless/b43/dma.c +++ b/drivers/net/wireless/b43/dma.c @@ -37,6 +37,8 @@ #include <linux/pci.h> #include <linux/delay.h> #include <linux/skbuff.h> +#include <linux/etherdevice.h> + /* 32bit DMA ops. */ static @@ -315,26 +317,24 @@ static struct b43_dmaring *priority_to_txring(struct b43_wldev *dev, case 3: ring = dev->dma.tx_ring0; break; - case 4: - ring = dev->dma.tx_ring4; - break; - case 5: - ring = dev->dma.tx_ring5; - break; } return ring; } -/* Bcm43xx-ring to mac80211-queue mapping */ +/* b43-ring to mac80211-queue mapping */ static inline int txring_to_priority(struct b43_dmaring *ring) { - static const u8 idx_to_prio[] = { 3, 2, 1, 0, 4, 5, }; + static const u8 idx_to_prio[] = { 3, 2, 1, 0, }; + unsigned int index; /*FIXME: have only one queue, for now */ return 0; - return idx_to_prio[ring->index]; + index = ring->index; + if (B43_WARN_ON(index >= ARRAY_SIZE(idx_to_prio))) + index = 0; + return idx_to_prio[index]; } u16 b43_dmacontroller_base(int dma64bit, int controller_idx) @@ -1043,26 +1043,30 @@ static u16 generate_cookie(struct b43_dmaring *ring, int slot) * in the lower 12 bits. * Note that the cookie must never be 0, as this * is a special value used in RX path. + * It can also not be 0xFFFF because that is special + * for multicast frames. */ switch (ring->index) { case 0: - cookie = 0xA000; + cookie = 0x1000; break; case 1: - cookie = 0xB000; + cookie = 0x2000; break; case 2: - cookie = 0xC000; + cookie = 0x3000; break; case 3: - cookie = 0xD000; + cookie = 0x4000; break; case 4: - cookie = 0xE000; + cookie = 0x5000; break; case 5: - cookie = 0xF000; + cookie = 0x6000; break; + default: + B43_WARN_ON(1); } B43_WARN_ON(slot & ~0x0FFF); cookie |= (u16) slot; @@ -1078,22 +1082,22 @@ struct b43_dmaring *parse_cookie(struct b43_wldev *dev, u16 cookie, int *slot) struct b43_dmaring *ring = NULL; switch (cookie & 0xF000) { - case 0xA000: + case 0x1000: ring = dma->tx_ring0; break; - case 0xB000: + case 0x2000: ring = dma->tx_ring1; break; - case 0xC000: + case 0x3000: ring = dma->tx_ring2; break; - case 0xD000: + case 0x4000: ring = dma->tx_ring3; break; - case 0xE000: + case 0x5000: ring = dma->tx_ring4; break; - case 0xF000: + case 0x6000: ring = dma->tx_ring5; break; default: @@ -1117,6 +1121,7 @@ static int dma_tx_fragment(struct b43_dmaring *ring, struct b43_dmadesc_meta *meta; struct b43_dmadesc_meta *meta_hdr; struct sk_buff *bounce_skb; + u16 cookie; #define SLOTS_PER_PACKET 2 B43_WARN_ON(skb_shinfo(skb)->nr_frags); @@ -1127,9 +1132,9 @@ static int dma_tx_fragment(struct b43_dmaring *ring, memset(meta_hdr, 0, sizeof(*meta_hdr)); header = &(ring->txhdr_cache[slot * sizeof(struct b43_txhdr_fw4)]); + cookie = generate_cookie(ring, slot); b43_generate_txhdr(ring->dev, header, - skb->data, skb->len, ctl, - generate_cookie(ring, slot)); + skb->data, skb->len, ctl, cookie); meta_hdr->dmaaddr = map_descbuffer(ring, (unsigned char *)header, sizeof(struct b43_txhdr_fw4), 1); @@ -1169,14 +1174,20 @@ static int dma_tx_fragment(struct b43_dmaring *ring, ops->fill_descriptor(ring, desc, meta->dmaaddr, skb->len, 0, 1, 1); + if (ctl->flags & IEEE80211_TXCTL_SEND_AFTER_DTIM) { + /* Tell the firmware about the cookie of the last + * mcast frame, so it can clear the more-data bit in it. */ + b43_shm_write16(ring->dev, B43_SHM_SHARED, + B43_SHM_SH_MCASTCOOKIE, cookie); + } /* Now transfer the whole frame. */ wmb(); ops->poke_tx(ring, next_slot(ring, slot)); return 0; - out_free_bounce: +out_free_bounce: dev_kfree_skb_any(skb); - out_unmap_hdr: +out_unmap_hdr: unmap_descbuffer(ring, meta_hdr->dmaaddr, sizeof(struct b43_txhdr_fw4), 1); return err; @@ -1207,10 +1218,27 @@ int b43_dma_tx(struct b43_wldev *dev, struct sk_buff *skb, struct ieee80211_tx_control *ctl) { struct b43_dmaring *ring; + struct ieee80211_hdr *hdr; int err = 0; unsigned long flags; - ring = priority_to_txring(dev, ctl->queue); + if (unlikely(skb->len < 2 + 2 + 6)) { + /* Too short, this can't be a valid frame. */ + return -EINVAL; + } + + hdr = (struct ieee80211_hdr *)skb->data; + if (ctl->flags & IEEE80211_TXCTL_SEND_AFTER_DTIM) { + /* The multicast ring will be sent after the DTIM */ + ring = dev->dma.tx_ring4; + /* Set the more-data bit. Ucode will clear it on + * the last frame for us. */ + hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_MOREDATA); + } else { + /* Decide by priority where to put this frame. */ + ring = priority_to_txring(dev, ctl->queue); + } + spin_lock_irqsave(&ring->lock, flags); B43_WARN_ON(!ring->tx); if (unlikely(free_slots(ring) < SLOTS_PER_PACKET)) { @@ -1238,7 +1266,7 @@ int b43_dma_tx(struct b43_wldev *dev, b43dbg(dev->wl, "Stopped TX ring %d\n", ring->index); } } - out_unlock: +out_unlock: spin_unlock_irqrestore(&ring->lock, flags); return err; 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); |