[BNX2]: Restructure IRQ datastructures.

Add a table to keep track of multiple IRQs and restructure the IRQ
request and free functions so that they can be easily expanded to
handle multiple IRQs.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 45 insertions, 22 deletions

diff --git a/drivers/net/bnx2.c b/drivers/net/bnx2.c
index f19a1e9a6b7f..83cdbde5d2d6 100644
--- a/drivers/net/bnx2.c
+++ b/drivers/net/bnx2.c
@@ -5234,18 +5234,15 @@ static int
 bnx2_request_irq(struct bnx2 *bp)
 {
         struct net_device *dev = bp->dev;
-        int rc = 0;
-
-        if (bp->flags & USING_MSI_FLAG) {
-                irq_handler_t   fn = bnx2_msi;
-
-                if (bp->flags & ONE_SHOT_MSI_FLAG)
-                        fn = bnx2_msi_1shot;
+        unsigned long flags;
+        struct bnx2_irq *irq = &bp->irq_tbl[0];
+        int rc;
 
-                rc = request_irq(bp->pdev->irq, fn, 0, dev->name, dev);
-        } else
-                rc = request_irq(bp->pdev->irq, bnx2_interrupt,
-                                 IRQF_SHARED, dev->name, dev);
+        if (bp->flags & USING_MSI_FLAG)
+                flags = 0;
+        else
+                flags = IRQF_SHARED;
+        rc = request_irq(irq->vector, irq->handler, flags, dev->name, dev);
         return rc;
 }
 
@@ -5254,12 +5251,31 @@ bnx2_free_irq(struct bnx2 *bp)
 {
         struct net_device *dev = bp->dev;
 
+        free_irq(bp->irq_tbl[0].vector, dev);
         if (bp->flags & USING_MSI_FLAG) {
-                free_irq(bp->pdev->irq, dev);
                 pci_disable_msi(bp->pdev);
                 bp->flags &= ~(USING_MSI_FLAG | ONE_SHOT_MSI_FLAG);
-        } else
-                free_irq(bp->pdev->irq, dev);
+        }
+}
+
+static void
+bnx2_setup_int_mode(struct bnx2 *bp, int dis_msi)
+{
+        bp->irq_tbl[0].handler = bnx2_interrupt;
+        strcpy(bp->irq_tbl[0].name, bp->dev->name);
+
+        if ((bp->flags & MSI_CAP_FLAG) && !dis_msi) {
+                if (pci_enable_msi(bp->pdev) == 0) {
+                        bp->flags |= USING_MSI_FLAG;
+                        if (CHIP_NUM(bp) == CHIP_NUM_5709) {
+                                bp->flags |= ONE_SHOT_MSI_FLAG;
+                                bp->irq_tbl[0].handler = bnx2_msi_1shot;
+                        } else
+                                bp->irq_tbl[0].handler = bnx2_msi;
+                }
+        }
+
+        bp->irq_tbl[0].vector = bp->pdev->irq;
 }
 
 /* Called with rtnl_lock */
@@ -5278,15 +5294,8 @@ bnx2_open(struct net_device *dev)
         if (rc)
                 return rc;
 
+        bnx2_setup_int_mode(bp, disable_msi);
         napi_enable(&bp->napi);
-
-        if ((bp->flags & MSI_CAP_FLAG) && !disable_msi) {
-                if (pci_enable_msi(bp->pdev) == 0) {
-                        bp->flags |= USING_MSI_FLAG;
-                        if (CHIP_NUM(bp) == CHIP_NUM_5709)
-                                bp->flags |= ONE_SHOT_MSI_FLAG;
-                }
-        }
         rc = bnx2_request_irq(bp);
 
         if (rc) {
@@ -5325,6 +5334,8 @@ bnx2_open(struct net_device *dev)
                         bnx2_disable_int(bp);
                         bnx2_free_irq(bp);
 
+                        bnx2_setup_int_mode(bp, 1);
+
                         rc = bnx2_init_nic(bp);
 
                         if (!rc)
diff --git a/drivers/net/bnx2.h b/drivers/net/bnx2.h
index 1f244faf3624..1accf0093126 100644
--- a/drivers/net/bnx2.h
+++ b/drivers/net/bnx2.h
@@ -6494,6 +6494,15 @@ struct flash_spec {
         u8  *name;
 };
 
+#define BNX2_MAX_MSIX_HW_VEC    9
+#define BNX2_MAX_MSIX_VEC       1
+
+struct bnx2_irq {
+        irq_handler_t   handler;
+        u16             vector;
+        char            name[16];
+};
+
 struct bnx2 {
         /* Fields used in the tx and intr/napi performance paths are grouped */
         /* together in the beginning of the structure. */
@@ -6721,6 +6730,9 @@ struct bnx2 {
         u32                     flash_size;
 
         int                     status_stats_size;
+
+        struct bnx2_irq         irq_tbl[BNX2_MAX_MSIX_VEC];
+        int                     irq_nvecs;
 };
 
 static u32 bnx2_reg_rd_ind(struct bnx2 *bp, u32 offset);