diff options
| author | Michael Chan <mchan@broadcom.com> | 2006-03-23 09:11:56 (GMT) |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2006-03-23 09:11:56 (GMT) |
| commit | bf5295bba804a6aead9bc1c0d5970173a9d4e08e (patch) | |
| tree | 561708042eb3348d0693f4d2a4035bf4b58fd8e9 | |
| parent | ca6549af77f0f28ac5d23b662fb8f72713eb16d3 (diff) | |
| download | linux-bf5295bba804a6aead9bc1c0d5970173a9d4e08e.tar.xz | |
[BNX2]: Fix link change handling
Fix some link-related problems by doing a coalesce_now after link
change interrupt to flush out the transient link status.
To facilitate this, the host coalesce cmd register value is cached in
the device structure.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/bnx2.c | 29 | ||||
| -rw-r--r-- | drivers/net/bnx2.h | 1 |
2 files changed, 18 insertions, 12 deletions
diff --git a/drivers/net/bnx2.c b/drivers/net/bnx2.c index 7d21370..c56888e 100644 --- a/drivers/net/bnx2.c +++ b/drivers/net/bnx2.c @@ -313,8 +313,6 @@ bnx2_disable_int(struct bnx2 *bp) static void bnx2_enable_int(struct bnx2 *bp) { - u32 val; - REG_WR(bp, BNX2_PCICFG_INT_ACK_CMD, BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | BNX2_PCICFG_INT_ACK_CMD_MASK_INT | bp->last_status_idx); @@ -322,8 +320,7 @@ bnx2_enable_int(struct bnx2 *bp) REG_WR(bp, BNX2_PCICFG_INT_ACK_CMD, BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | bp->last_status_idx); - val = REG_RD(bp, BNX2_HC_COMMAND); - REG_WR(bp, BNX2_HC_COMMAND, val | BNX2_HC_COMMAND_COAL_NOW); + REG_WR(bp, BNX2_HC_COMMAND, bp->hc_cmd | BNX2_HC_COMMAND_COAL_NOW); } static void @@ -1926,6 +1923,13 @@ bnx2_poll(struct net_device *dev, int *budget) spin_lock(&bp->phy_lock); bnx2_phy_int(bp); spin_unlock(&bp->phy_lock); + + /* This is needed to take care of transient status + * during link changes. + */ + REG_WR(bp, BNX2_HC_COMMAND, + bp->hc_cmd | BNX2_HC_COMMAND_COAL_NOW_WO_INT); + REG_RD(bp, BNX2_HC_COMMAND); } if (bp->status_blk->status_tx_quick_consumer_index0 != bp->hw_tx_cons) @@ -3307,6 +3311,8 @@ bnx2_init_chip(struct bnx2 *bp) udelay(20); + bp->hc_cmd = REG_RD(bp, BNX2_HC_COMMAND); + return rc; } @@ -3746,7 +3752,6 @@ bnx2_run_loopback(struct bnx2 *bp, int loopback_mode) struct sk_buff *skb, *rx_skb; unsigned char *packet; u16 rx_start_idx, rx_idx; - u32 val; dma_addr_t map; struct tx_bd *txbd; struct sw_bd *rx_buf; @@ -3777,8 +3782,9 @@ bnx2_run_loopback(struct bnx2 *bp, int loopback_mode) map = pci_map_single(bp->pdev, skb->data, pkt_size, PCI_DMA_TODEVICE); - val = REG_RD(bp, BNX2_HC_COMMAND); - REG_WR(bp, BNX2_HC_COMMAND, val | BNX2_HC_COMMAND_COAL_NOW_WO_INT); + REG_WR(bp, BNX2_HC_COMMAND, + bp->hc_cmd | BNX2_HC_COMMAND_COAL_NOW_WO_INT); + REG_RD(bp, BNX2_HC_COMMAND); udelay(5); @@ -3802,8 +3808,9 @@ bnx2_run_loopback(struct bnx2 *bp, int loopback_mode) udelay(100); - val = REG_RD(bp, BNX2_HC_COMMAND); - REG_WR(bp, BNX2_HC_COMMAND, val | BNX2_HC_COMMAND_COAL_NOW_WO_INT); + REG_WR(bp, BNX2_HC_COMMAND, + bp->hc_cmd | BNX2_HC_COMMAND_COAL_NOW_WO_INT); + REG_RD(bp, BNX2_HC_COMMAND); udelay(5); @@ -3939,7 +3946,6 @@ static int bnx2_test_intr(struct bnx2 *bp) { int i; - u32 val; u16 status_idx; if (!netif_running(bp->dev)) @@ -3948,8 +3954,7 @@ bnx2_test_intr(struct bnx2 *bp) status_idx = REG_RD(bp, BNX2_PCICFG_INT_ACK_CMD) & 0xffff; /* This register is not touched during run-time. */ - val = REG_RD(bp, BNX2_HC_COMMAND); - REG_WR(bp, BNX2_HC_COMMAND, val | BNX2_HC_COMMAND_COAL_NOW); + REG_WR(bp, BNX2_HC_COMMAND, bp->hc_cmd | BNX2_HC_COMMAND_COAL_NOW); REG_RD(bp, BNX2_HC_COMMAND); for (i = 0; i < 10; i++) { diff --git a/drivers/net/bnx2.h b/drivers/net/bnx2.h index fd4b7f2..18bc091 100644 --- a/drivers/net/bnx2.h +++ b/drivers/net/bnx2.h @@ -4038,6 +4038,7 @@ struct bnx2 { struct statistics_block *stats_blk; dma_addr_t stats_blk_mapping; + u32 hc_cmd; u32 rx_mode; u16 req_line_speed; |