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Date: Thu, 03 May 2007 00:31:06 -0700
From: "Michael Chan" <mchan@...adcom.com>
To: "David Miller" <davem@...emloft.net>
cc: "netdev" <netdev@...r.kernel.org>
Subject: [PATCH v2 13/16][BNX2]: Restructure PHY event handling.
[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@...adcom.com>
diff --git a/drivers/net/bnx2.c b/drivers/net/bnx2.c
index cb74f12..f072028 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)
-
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