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authorMichael Chan <mchan@broadcom.com>2007-05-03 13:24:05 -0700
committerDavid S. Miller <davem@davemloft.net>2007-05-03 13:24:05 -0700
commit1b8227c48e164655f02aa0eff55862af2d05da51 (patch)
treeee1598123fba3ee397a463ff706ec8f235464523 /drivers/net
parent27a005b883984ef3a3cf24e7ddd78eb78902f494 (diff)
[BNX2]: Add indirect spinlock.
The indirect register access method will be used by more than one caller in BH context (NAPI poll and timer), so a spinlock is required. Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/bnx2.c12
-rw-r--r--drivers/net/bnx2.h1
2 files changed, 12 insertions, 1 deletions
diff --git a/drivers/net/bnx2.c b/drivers/net/bnx2.c
index ab589090d63..cb74f122138 100644
--- a/drivers/net/bnx2.c
+++ b/drivers/net/bnx2.c
@@ -234,21 +234,29 @@ static inline u32 bnx2_tx_avail(struct bnx2 *bp)
static u32
bnx2_reg_rd_ind(struct bnx2 *bp, u32 offset)
{
+ u32 val;
+
+ spin_lock_bh(&bp->indirect_lock);
REG_WR(bp, BNX2_PCICFG_REG_WINDOW_ADDRESS, offset);
- return (REG_RD(bp, BNX2_PCICFG_REG_WINDOW));
+ val = REG_RD(bp, BNX2_PCICFG_REG_WINDOW);
+ spin_unlock_bh(&bp->indirect_lock);
+ return val;
}
static void
bnx2_reg_wr_ind(struct bnx2 *bp, u32 offset, u32 val)
{
+ spin_lock_bh(&bp->indirect_lock);
REG_WR(bp, BNX2_PCICFG_REG_WINDOW_ADDRESS, offset);
REG_WR(bp, BNX2_PCICFG_REG_WINDOW, val);
+ spin_unlock_bh(&bp->indirect_lock);
}
static void
bnx2_ctx_wr(struct bnx2 *bp, u32 cid_addr, u32 offset, u32 val)
{
offset += cid_addr;
+ spin_lock_bh(&bp->indirect_lock);
if (CHIP_NUM(bp) == CHIP_NUM_5709) {
int i;
@@ -266,6 +274,7 @@ bnx2_ctx_wr(struct bnx2 *bp, u32 cid_addr, u32 offset, u32 val)
REG_WR(bp, BNX2_CTX_DATA_ADR, offset);
REG_WR(bp, BNX2_CTX_DATA, val);
}
+ spin_unlock_bh(&bp->indirect_lock);
}
static int
@@ -6039,6 +6048,7 @@ bnx2_init_board(struct pci_dev *pdev, struct net_device *dev)
bp->pdev = pdev;
spin_lock_init(&bp->phy_lock);
+ spin_lock_init(&bp->indirect_lock);
INIT_WORK(&bp->reset_task, bnx2_reset_task);
dev->base_addr = dev->mem_start = pci_resource_start(pdev, 0);
diff --git a/drivers/net/bnx2.h b/drivers/net/bnx2.h
index 124bd03cff3..ba175a800c8 100644
--- a/drivers/net/bnx2.h
+++ b/drivers/net/bnx2.h
@@ -6522,6 +6522,7 @@ struct bnx2 {
/* Used to synchronize phy accesses. */
spinlock_t phy_lock;
+ spinlock_t indirect_lock;
u32 phy_flags;
#define PHY_SERDES_FLAG 1