Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6

[linux-2.6-omap-h63xx.git] / drivers / net / bnx2.c

diff --git a/drivers/net/bnx2.c b/drivers/net/bnx2.c
index 182f2410c23d950d271280aa7748fae4f8f79dcd..0e2218dadb3de7e3d76009e03cfe7740b3f61ec0 100644 (file)
--- a/drivers/net/bnx2.c
+++ b/drivers/net/bnx2.c
@@ -3147,6 +3147,28 @@ bnx2_has_work(struct bnx2_napi *bnapi)
        return 0;
 }
 
+static void
+bnx2_chk_missed_msi(struct bnx2 *bp)
+{
+       struct bnx2_napi *bnapi = &bp->bnx2_napi[0];
+       u32 msi_ctrl;
+
+       if (bnx2_has_work(bnapi)) {
+               msi_ctrl = REG_RD(bp, BNX2_PCICFG_MSI_CONTROL);
+               if (!(msi_ctrl & BNX2_PCICFG_MSI_CONTROL_ENABLE))
+                       return;
+
+               if (bnapi->last_status_idx == bp->idle_chk_status_idx) {
+                       REG_WR(bp, BNX2_PCICFG_MSI_CONTROL, msi_ctrl &
+                              ~BNX2_PCICFG_MSI_CONTROL_ENABLE);
+                       REG_WR(bp, BNX2_PCICFG_MSI_CONTROL, msi_ctrl);
+                       bnx2_msi(bp->irq_tbl[0].vector, bnapi);
+               }
+       }
+
+       bp->idle_chk_status_idx = bnapi->last_status_idx;
+}
+
 static void bnx2_poll_link(struct bnx2 *bp, struct bnx2_napi *bnapi)
 {
        struct status_block *sblk = bnapi->status_blk.msi;
@@ -3221,14 +3243,15 @@ static int bnx2_poll(struct napi_struct *napi, int budget)
 
                work_done = bnx2_poll_work(bp, bnapi, work_done, budget);
 
-               if (unlikely(work_done >= budget))
-                       break;
-
                /* bnapi->last_status_idx is used below to tell the hw how
                 * much work has been processed, so we must read it before
                 * checking for more work.
                 */
                bnapi->last_status_idx = sblk->status_idx;
+
+               if (unlikely(work_done >= budget))
+                       break;
+
                rmb();
                if (likely(!bnx2_has_work(bnapi))) {
                        netif_rx_complete(bp->dev, napi);
@@ -4581,6 +4604,8 @@ bnx2_init_chip(struct bnx2 *bp)
        for (i = 0; i < BNX2_MAX_MSIX_VEC; i++)
                bp->bnx2_napi[i].last_status_idx = 0;
 
+       bp->idle_chk_status_idx = 0xffff;
+
        bp->rx_mode = BNX2_EMAC_RX_MODE_SORT_MODE;
 
        /* Set up how to generate a link change interrupt. */
@@ -5729,6 +5754,10 @@ bnx2_timer(unsigned long data)
        if (atomic_read(&bp->intr_sem) != 0)
                goto bnx2_restart_timer;
 
+       if ((bp->flags & (BNX2_FLAG_USING_MSI | BNX2_FLAG_ONE_SHOT_MSI)) ==
+            BNX2_FLAG_USING_MSI)
+               bnx2_chk_missed_msi(bp);
+
        bnx2_send_heart_beat(bp);
 
        bp->stats_blk->stat_FwRxDrop =