This pull is intended for 2.6.17 if at all possible.
Thanks,
John
---
The following changes since commit 672c6108a51bf559d19595d9f8193dfd81f0f752:
Linus Torvalds:
Merge master.kernel.org:/.../jejb/scsi-rc-fixes-2.6
are found in the git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6.git
upstream-fixes
Michael Buesch:
bcm43xx: add DMA rx poll workaround to DMA4
drivers/net/wireless/bcm43xx/bcm43xx_dma.c | 31 ++++++++++++++++++++--------
1 files changed, 22 insertions(+), 9 deletions(-)
diff --git a/drivers/net/wireless/bcm43xx/bcm43xx_dma.c
b/drivers/net/wireless/bcm43xx/bcm43xx_dma.c
index bbecba0..d0318e5 100644
--- a/drivers/net/wireless/bcm43xx/bcm43xx_dma.c
+++ b/drivers/net/wireless/bcm43xx/bcm43xx_dma.c
@@ -624,25 +624,28 @@ err_destroy_tx0:
static u16 generate_cookie(struct bcm43xx_dmaring *ring,
int slot)
{
- u16 cookie = 0x0000;
+ u16 cookie = 0xF000;
/* Use the upper 4 bits of the cookie as
* DMA controller ID and store the slot number
- * in the lower 12 bits
+ * in the lower 12 bits.
+ * Note that the cookie must never be 0, as this
+ * is a special value used in RX path.
*/
switch (ring->mmio_base) {
default:
assert(0);
case BCM43xx_MMIO_DMA1_BASE:
+ cookie = 0xA000;
break;
case BCM43xx_MMIO_DMA2_BASE:
- cookie = 0x1000;
+ cookie = 0xB000;
break;
case BCM43xx_MMIO_DMA3_BASE:
- cookie = 0x2000;
+ cookie = 0xC000;
break;
case BCM43xx_MMIO_DMA4_BASE:
- cookie = 0x3000;
+ cookie = 0xD000;
break;
}
assert(((u16)slot & 0xF000) == 0x0000);
@@ -660,16 +663,16 @@ struct bcm43xx_dmaring * parse_cookie(st
struct bcm43xx_dmaring *ring = NULL;
switch (cookie & 0xF000) {
- case 0x0000:
+ case 0xA000:
ring = dma->tx_ring0;
break;
- case 0x1000:
+ case 0xB000:
ring = dma->tx_ring1;
break;
- case 0x2000:
+ case 0xC000:
ring = dma->tx_ring2;
break;
- case 0x3000:
+ case 0xD000:
ring = dma->tx_ring3;
break;
default:
@@ -839,8 +842,18 @@ static void dma_rx(struct bcm43xx_dmarin
/* We received an xmit status. */
struct bcm43xx_hwxmitstatus *hw = (struct bcm43xx_hwxmitstatus
*)skb->data;
struct bcm43xx_xmitstatus stat;
+ int i = 0;
stat.cookie = le16_to_cpu(hw->cookie);
+ while (stat.cookie == 0) {
+ if (unlikely(++i >= 10000)) {
+ assert(0);
+ break;
+ }
+ udelay(2);
+ barrier();
+ stat.cookie = le16_to_cpu(hw->cookie);
+ }
stat.flags = hw->flags;
stat.cnt1 = hw->cnt1;
stat.cnt2 = hw->cnt2;
--
John W. Linville
[EMAIL PROTECTED]
-
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
