diff options
| author | Michael Chan <mchan@broadcom.com> | 2007-05-03 22:24:23 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2007-05-03 22:24:23 +0200 |
| commit | da3e4fbed21a5d7edab10ffb77a8c04a725f9eff (patch) | |
| tree | be2adcd6a722399d3f1c406b79d372b03bfb9f08 /drivers/net/bnx2.c | |
| parent | [BNX2]: Add indirect spinlock. (diff) | |
| download | linux-da3e4fbed21a5d7edab10ffb77a8c04a725f9eff.tar.xz linux-da3e4fbed21a5d7edab10ffb77a8c04a725f9eff.zip | |
[BNX2]: Restructure PHY event handling.
Restructure by adding bnx2_phy_event_is_set() to make code cleaner
and easier to understand.
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.c | 55 |
1 files changed, 32 insertions, 23 deletions
diff --git a/drivers/net/bnx2.c b/drivers/net/bnx2.c index cb74f122138c..f072028e3e3b 100644 --- a/drivers/net/bnx2.c +++ b/drivers/net/bnx2.c @@ -1942,25 +1942,33 @@ bnx2_alloc_rx_skb(struct bnx2 *bp, u16 index) return 0; } -static void -bnx2_phy_int(struct bnx2 *bp) +static int +bnx2_phy_event_is_set(struct bnx2 *bp, u32 event) { + struct status_block *sblk = bp->status_blk; u32 new_link_state, old_link_state; + int is_set = 1; - new_link_state = bp->status_blk->status_attn_bits & - STATUS_ATTN_BITS_LINK_STATE; - old_link_state = bp->status_blk->status_attn_bits_ack & - STATUS_ATTN_BITS_LINK_STATE; + new_link_state = sblk->status_attn_bits & event; + old_link_state = sblk->status_attn_bits_ack & event; if (new_link_state != old_link_state) { - if (new_link_state) { - REG_WR(bp, BNX2_PCICFG_STATUS_BIT_SET_CMD, - STATUS_ATTN_BITS_LINK_STATE); - } - else { - REG_WR(bp, BNX2_PCICFG_STATUS_BIT_CLEAR_CMD, - STATUS_ATTN_BITS_LINK_STATE); - } + if (new_link_state) + REG_WR(bp, BNX2_PCICFG_STATUS_BIT_SET_CMD, event); + else + REG_WR(bp, BNX2_PCICFG_STATUS_BIT_CLEAR_CMD, event); + } else + is_set = 0; + + return is_set; +} + +static void +bnx2_phy_int(struct bnx2 *bp) +{ + if (bnx2_phy_event_is_set(bp, STATUS_ATTN_BITS_LINK_STATE)) { + spin_lock(&bp->phy_lock); bnx2_set_link(bp); + spin_unlock(&bp->phy_lock); } } @@ -2283,6 +2291,8 @@ bnx2_interrupt(int irq, void *dev_instance) return IRQ_HANDLED; } +#define STATUS_ATTN_EVENTS STATUS_ATTN_BITS_LINK_STATE + static inline int bnx2_has_work(struct bnx2 *bp) { @@ -2292,8 +2302,8 @@ bnx2_has_work(struct bnx2 *bp) (sblk->status_tx_quick_consumer_index0 != bp->hw_tx_cons)) return 1; - if ((sblk->status_attn_bits & STATUS_ATTN_BITS_LINK_STATE) != - (sblk->status_attn_bits_ack & STATUS_ATTN_BITS_LINK_STATE)) + if ((sblk->status_attn_bits & STATUS_ATTN_EVENTS) != + (sblk->status_attn_bits_ack & STATUS_ATTN_EVENTS)) return 1; return 0; @@ -2303,15 +2313,14 @@ static int bnx2_poll(struct net_device *dev, int *budget) { struct bnx2 *bp = netdev_priv(dev); + struct status_block *sblk = bp->status_blk; + u32 status_attn_bits = sblk->status_attn_bits; + u32 status_attn_bits_ack = sblk->status_attn_bits_ack; - if ((bp->status_blk->status_attn_bits & - STATUS_ATTN_BITS_LINK_STATE) != - (bp->status_blk->status_attn_bits_ack & - STATUS_ATTN_BITS_LINK_STATE)) { + if ((status_attn_bits & STATUS_ATTN_EVENTS) != + (status_attn_bits_ack & STATUS_ATTN_EVENTS)) { - 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. @@ -3760,7 +3769,7 @@ bnx2_init_chip(struct bnx2 *bp) /* Clear internal stats counters. */ REG_WR(bp, BNX2_HC_COMMAND, BNX2_HC_COMMAND_CLR_STAT_NOW); - REG_WR(bp, BNX2_HC_ATTN_BITS_ENABLE, STATUS_ATTN_BITS_LINK_STATE); + REG_WR(bp, BNX2_HC_ATTN_BITS_ENABLE, STATUS_ATTN_EVENTS); if (REG_RD_IND(bp, bp->shmem_base + BNX2_PORT_FEATURE) & BNX2_PORT_FEATURE_ASF_ENABLED) |