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authorMichael Chan <mchan@broadcom.com>2007-12-21 04:55:39 +0100
committerDavid S. Miller <davem@davemloft.net>2008-01-28 23:57:33 +0100
commitead7270b993bed77cb45a5bc786a879679e2b16a (patch)
tree04633f7710d3e7b37065bd1f515dfc4f11ae14ba /drivers/net/bnx2.c
parent[BNX2]: Update version to 1.6.9. (diff)
downloadlinux-ead7270b993bed77cb45a5bc786a879679e2b16a.tar.xz
linux-ead7270b993bed77cb45a5bc786a879679e2b16a.zip
[BNX2]: Add function to fetch hardware tx index.
This makes the code cleaner and easier to support different tx rings. Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/bnx2.c')
-rw-r--r--drivers/net/bnx2.c37
1 files changed, 20 insertions, 17 deletions
diff --git a/drivers/net/bnx2.c b/drivers/net/bnx2.c
index 469d259e6a20..f19a1e9a6b7f 100644
--- a/drivers/net/bnx2.c
+++ b/drivers/net/bnx2.c
@@ -2323,17 +2323,25 @@ bnx2_phy_int(struct bnx2 *bp)
}
+static inline u16
+bnx2_get_hw_tx_cons(struct bnx2 *bp)
+{
+ u16 cons;
+
+ cons = bp->status_blk->status_tx_quick_consumer_index0;
+
+ if (unlikely((cons & MAX_TX_DESC_CNT) == MAX_TX_DESC_CNT))
+ cons++;
+ return cons;
+}
+
static void
bnx2_tx_int(struct bnx2 *bp)
{
- struct status_block *sblk = bp->status_blk;
u16 hw_cons, sw_cons, sw_ring_cons;
int tx_free_bd = 0;
- hw_cons = bp->hw_tx_cons = sblk->status_tx_quick_consumer_index0;
- if ((hw_cons & MAX_TX_DESC_CNT) == MAX_TX_DESC_CNT) {
- hw_cons++;
- }
+ hw_cons = bnx2_get_hw_tx_cons(bp);
sw_cons = bp->tx_cons;
while (sw_cons != hw_cons) {
@@ -2385,14 +2393,10 @@ bnx2_tx_int(struct bnx2 *bp)
dev_kfree_skb(skb);
- hw_cons = bp->hw_tx_cons =
- sblk->status_tx_quick_consumer_index0;
-
- if ((hw_cons & MAX_TX_DESC_CNT) == MAX_TX_DESC_CNT) {
- hw_cons++;
- }
+ hw_cons = bnx2_get_hw_tx_cons(bp);
}
+ bp->hw_tx_cons = hw_cons;
bp->tx_cons = sw_cons;
/* Need to make the tx_cons update visible to bnx2_start_xmit()
* before checking for netif_queue_stopped(). Without the
@@ -2822,7 +2826,7 @@ bnx2_has_work(struct bnx2 *bp)
struct status_block *sblk = bp->status_blk;
if ((bnx2_get_hw_rx_cons(bp) != bp->rx_cons) ||
- (sblk->status_tx_quick_consumer_index0 != bp->hw_tx_cons))
+ (bnx2_get_hw_tx_cons(bp) != bp->hw_tx_cons))
return 1;
if ((sblk->status_attn_bits & STATUS_ATTN_EVENTS) !=
@@ -2851,7 +2855,7 @@ static int bnx2_poll_work(struct bnx2 *bp, int work_done, int budget)
REG_RD(bp, BNX2_HC_COMMAND);
}
- if (sblk->status_tx_quick_consumer_index0 != bp->hw_tx_cons)
+ if (bnx2_get_hw_tx_cons(bp) != bp->hw_tx_cons)
bnx2_tx_int(bp);
if (bnx2_get_hw_rx_cons(bp) != bp->rx_cons)
@@ -4917,7 +4921,7 @@ bnx2_run_loopback(struct bnx2 *bp, int loopback_mode)
REG_RD(bp, BNX2_HC_COMMAND);
udelay(5);
- rx_start_idx = bp->status_blk->status_rx_quick_consumer_index0;
+ rx_start_idx = bnx2_get_hw_rx_cons(bp);
num_pkts = 0;
@@ -4947,11 +4951,10 @@ bnx2_run_loopback(struct bnx2 *bp, int loopback_mode)
pci_unmap_single(bp->pdev, map, pkt_size, PCI_DMA_TODEVICE);
dev_kfree_skb(skb);
- if (bp->status_blk->status_tx_quick_consumer_index0 != bp->tx_prod) {
+ if (bnx2_get_hw_tx_cons(bp) != bp->tx_prod)
goto loopback_test_done;
- }
- rx_idx = bp->status_blk->status_rx_quick_consumer_index0;
+ rx_idx = bnx2_get_hw_rx_cons(bp);
if (rx_idx != rx_start_idx + num_pkts) {
goto loopback_test_done;
}