diff options
| author | Michael Chan <mchan@broadcom.com> | 2007-05-03 22:24:05 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2007-05-03 22:24:05 +0200 |
| commit | 1b8227c48e164655f02aa0eff55862af2d05da51 (patch) | |
| tree | ee1598123fba3ee397a463ff706ec8f235464523 /drivers/net/bnx2.c | |
| parent | [BNX2]: Add support for 5709 Serdes. (diff) | |
| download | linux-1b8227c48e164655f02aa0eff55862af2d05da51.tar.xz linux-1b8227c48e164655f02aa0eff55862af2d05da51.zip | |
[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/bnx2.c')
| -rw-r--r-- | drivers/net/bnx2.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/net/bnx2.c b/drivers/net/bnx2.c index ab589090d634..cb74f122138c 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); |