qlge: Increase MAC addr hw sem granularity.

Instead of taking/giving the semaphore repeatedly when iterating over
several adderesses, we have the caller hold it until all are done.  This
reduces PCI bus chatter and possible waits.

Signed-off-by: Ron Mercer <ron.mercer@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 43 insertions, 17 deletions

diff --git a/drivers/net/qlge/qlge_dbg.c b/drivers/net/qlge/qlge_dbg.c
index 379b895ed6e6..40a70c36f5ae 100644
--- a/drivers/net/qlge/qlge_dbg.c
+++ b/drivers/net/qlge/qlge_dbg.c
@@ -83,6 +83,10 @@ static void ql_dump_cam_entries(struct ql_adapter *qdev)
 {
         int i;
         u32 value[3];
+
+        i = ql_sem_spinlock(qdev, SEM_MAC_ADDR_MASK);
+        if (i)
+                return;
         for (i = 0; i < 4; i++) {
                 if (ql_get_mac_addr_reg(qdev, MAC_ADDR_TYPE_CAM_MAC, i, value)) {
                         printk(KERN_ERR PFX
@@ -111,12 +115,16 @@ static void ql_dump_cam_entries(struct ql_adapter *qdev)
                                        qdev->ndev->name, i, value[1], value[0]);
                 }
         }
+        ql_sem_unlock(qdev, SEM_MAC_ADDR_MASK);
 }
 
 void ql_dump_routing_entries(struct ql_adapter *qdev)
 {
         int i;
         u32 value;
+        i = ql_sem_spinlock(qdev, SEM_RT_IDX_MASK);
+        if (i)
+                return;
         for (i = 0; i < 16; i++) {
                 value = 0;
                 if (ql_get_routing_reg(qdev, i, &value)) {
@@ -131,6 +139,7 @@ void ql_dump_routing_entries(struct ql_adapter *qdev)
                                        qdev->ndev->name, i, value);
                 }
         }
+        ql_sem_unlock(qdev, SEM_RT_IDX_MASK);
 }
 
 void ql_dump_regs(struct ql_adapter *qdev)
diff --git a/drivers/net/qlge/qlge_main.c b/drivers/net/qlge/qlge_main.c
index 3a041b6d9fec..d316e508d06e 100644
--- a/drivers/net/qlge/qlge_main.c
+++ b/drivers/net/qlge/qlge_main.c
@@ -247,9 +247,6 @@ int ql_get_mac_addr_reg(struct ql_adapter *qdev, u32 type, u16 index,
         u32 offset = 0;
         int status;
 
-        status = ql_sem_spinlock(qdev, SEM_MAC_ADDR_MASK);
-        if (status)
-                return status;
         switch (type) {
         case MAC_ADDR_TYPE_MULTI_MAC:
         case MAC_ADDR_TYPE_CAM_MAC:
@@ -308,7 +305,6 @@ int ql_get_mac_addr_reg(struct ql_adapter *qdev, u32 type, u16 index,
                 status = -EPERM;
         }
 exit:
-        ql_sem_unlock(qdev, SEM_MAC_ADDR_MASK);
         return status;
 }
 
@@ -321,9 +317,6 @@ static int ql_set_mac_addr_reg(struct ql_adapter *qdev, u8 *addr, u32 type,
         u32 offset = 0;
         int status = 0;
 
-        status = ql_sem_spinlock(qdev, SEM_MAC_ADDR_MASK);
-        if (status)
-                return status;
         switch (type) {
         case MAC_ADDR_TYPE_MULTI_MAC:
         case MAC_ADDR_TYPE_CAM_MAC:
@@ -415,7 +408,6 @@ static int ql_set_mac_addr_reg(struct ql_adapter *qdev, u8 *addr, u32 type,
                 status = -EPERM;
         }
 exit:
-        ql_sem_unlock(qdev, SEM_MAC_ADDR_MASK);
         return status;
 }
 
@@ -1690,19 +1682,29 @@ static void ql_vlan_rx_add_vid(struct net_device *ndev, u16 vid)
 {
         struct ql_adapter *qdev = netdev_priv(ndev);
         u32 enable_bit = MAC_ADDR_E;
+        int status;
 
+        status = ql_sem_spinlock(qdev, SEM_MAC_ADDR_MASK);
+        if (status)
+                return;
         spin_lock(&qdev->hw_lock);
         if (ql_set_mac_addr_reg
             (qdev, (u8 *) &enable_bit, MAC_ADDR_TYPE_VLAN, vid)) {
                 QPRINTK(qdev, IFUP, ERR, "Failed to init vlan address.\n");
         }
         spin_unlock(&qdev->hw_lock);
+        ql_sem_unlock(qdev, SEM_MAC_ADDR_MASK);
 }
 
 static void ql_vlan_rx_kill_vid(struct net_device *ndev, u16 vid)
 {
         struct ql_adapter *qdev = netdev_priv(ndev);
         u32 enable_bit = 0;
+        int status;
+
+        status = ql_sem_spinlock(qdev, SEM_MAC_ADDR_MASK);
+        if (status)
+                return;
 
         spin_lock(&qdev->hw_lock);
         if (ql_set_mac_addr_reg
@@ -1710,6 +1712,7 @@ static void ql_vlan_rx_kill_vid(struct net_device *ndev, u16 vid)
                 QPRINTK(qdev, IFUP, ERR, "Failed to clear vlan address.\n");
         }
         spin_unlock(&qdev->hw_lock);
+        ql_sem_unlock(qdev, SEM_MAC_ADDR_MASK);
 
 }
 
@@ -2962,8 +2965,12 @@ static int ql_cam_route_initialize(struct ql_adapter *qdev)
 {
         int status;
 
+        status = ql_sem_spinlock(qdev, SEM_MAC_ADDR_MASK);
+        if (status)
+                return status;
         status = ql_set_mac_addr_reg(qdev, (u8 *) qdev->ndev->perm_addr,
                              MAC_ADDR_TYPE_CAM_MAC, qdev->func * MAX_CQ);
+        ql_sem_unlock(qdev, SEM_MAC_ADDR_MASK);
         if (status) {
                 QPRINTK(qdev, IFUP, ERR, "Failed to init mac address.\n");
                 return status;
@@ -3428,8 +3435,11 @@ static void qlge_set_multicast_list(struct net_device *ndev)
 {
         struct ql_adapter *qdev = (struct ql_adapter *)netdev_priv(ndev);
         struct dev_mc_list *mc_ptr;
-        int i;
+        int i, status;
 
+        status = ql_sem_spinlock(qdev, SEM_RT_IDX_MASK);
+        if (status)
+                return;
         spin_lock(&qdev->hw_lock);
         /*
          * Set or clear promiscuous mode if a
@@ -3485,14 +3495,19 @@ static void qlge_set_multicast_list(struct net_device *ndev)
         }
 
         if (ndev->mc_count) {
+                status = ql_sem_spinlock(qdev, SEM_MAC_ADDR_MASK);
+                if (status)
+                        goto exit;
                 for (i = 0, mc_ptr = ndev->mc_list; mc_ptr;
                      i++, mc_ptr = mc_ptr->next)
                         if (ql_set_mac_addr_reg(qdev, (u8 *) mc_ptr->dmi_addr,
                                                 MAC_ADDR_TYPE_MULTI_MAC, i)) {
                                 QPRINTK(qdev, HW, ERR,
                                         "Failed to loadmulticast address.\n");
+                                ql_sem_unlock(qdev, SEM_MAC_ADDR_MASK);
                                 goto exit;
                         }
+                ql_sem_unlock(qdev, SEM_MAC_ADDR_MASK);
                 if (ql_set_routing_reg
                     (qdev, RT_IDX_MCAST_MATCH_SLOT, RT_IDX_MCAST_MATCH, 1)) {
                         QPRINTK(qdev, HW, ERR,
@@ -3509,7 +3524,7 @@ static int qlge_set_mac_address(struct net_device *ndev, void *p)
 {
         struct ql_adapter *qdev = (struct ql_adapter *)netdev_priv(ndev);
         struct sockaddr *addr = p;
-        int ret = 0;
+        int status;
 
         if (netif_running(ndev))
                 return -EBUSY;
@@ -3518,15 +3533,17 @@ static int qlge_set_mac_address(struct net_device *ndev, void *p)
                 return -EADDRNOTAVAIL;
         memcpy(ndev->dev_addr, addr->sa_data, ndev->addr_len);
 
+        status = ql_sem_spinlock(qdev, SEM_MAC_ADDR_MASK);
+        if (status)
+                return status;
         spin_lock(&qdev->hw_lock);
-        if (ql_set_mac_addr_reg(qdev, (u8 *) ndev->dev_addr,
-                        MAC_ADDR_TYPE_CAM_MAC, qdev->func)) {/* Unicast */
-                QPRINTK(qdev, HW, ERR, "Failed to load MAC address.\n");
-                ret = -1;
-        }
+        status = ql_set_mac_addr_reg(qdev, (u8 *) ndev->dev_addr,
+                        MAC_ADDR_TYPE_CAM_MAC, qdev->func * MAX_CQ);
         spin_unlock(&qdev->hw_lock);
-
-        return ret;
+        if (status)
+                QPRINTK(qdev, HW, ERR, "Failed to load MAC address.\n");
+        ql_sem_unlock(qdev, SEM_MAC_ADDR_MASK);
+        return status;
 }
 
 static void qlge_tx_timeout(struct net_device *ndev)