This queues frames flagged as "send after DTIM" by mac80211
on the special multicast queue. The firmware will take care
to send the packet after the DTIM.
Signed-off-by: Michael Buesch <mb@xxxxxxxxx>
---
John, this is 2.6.25 stuff.
Index: wireless-2.6/drivers/net/wireless/b43/b43.h
===================================================================
--- wireless-2.6.orig/drivers/net/wireless/b43/b43.h 2007-12-26 18:04:52.000000000 +0100
+++ wireless-2.6/drivers/net/wireless/b43/b43.h 2007-12-26 18:07:11.000000000 +0100
@@ -171,14 +171,17 @@ 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 */
@@ -612,9 +615,12 @@ 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.
Index: wireless-2.6/drivers/net/wireless/b43/dma.c
===================================================================
--- wireless-2.6.orig/drivers/net/wireless/b43/dma.c 2007-12-26 17:57:08.000000000 +0100
+++ wireless-2.6/drivers/net/wireless/b43/dma.c 2007-12-26 18:14:15.000000000 +0100
@@ -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_t
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_dm
* 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
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_dm
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_dm
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_dm
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;
Index: wireless-2.6/drivers/net/wireless/b43/main.c
===================================================================
--- wireless-2.6.orig/drivers/net/wireless/b43/main.c 2007-12-26 18:04:53.000000000 +0100
+++ wireless-2.6/drivers/net/wireless/b43/main.c 2007-12-26 18:20:38.000000000 +0100
@@ -250,13 +250,12 @@ static void b43_ram_write(struct b43_wld
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;
@@ -265,8 +264,11 @@ 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) {
@@ -277,20 +279,25 @@ u32 b43_shm_read32(struct b43_wldev *dev
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) {
@@ -298,55 +305,63 @@ u16 b43_shm_read16(struct b43_wldev * de
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 */
@@ -3964,6 +3979,7 @@ static int b43_wireless_init(struct ssb_
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);
-
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