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[BNX2]: Restructure PHY event handling.

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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>
This commit is contained in:
Michael Chan 2007-05-03 13:24:23 -07:00 committed by David S. Miller
parent 1b8227c48e
commit da3e4fbed2
1 changed files with 33 additions and 24 deletions
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57
drivers/net/bnx2.c
View file

@ -1942,25 +1942,33 @@ bnx2_alloc_rx_skb(struct bnx2 *bp, u16 index)
return 0;
}
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 = 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, 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)
{
u32 new_link_state, old_link_state;
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;
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 (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)