Merge branch 'omap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind...

[pandora-kernel.git] / drivers / net / cnic.c

diff --git a/drivers/net/cnic.c b/drivers/net/cnic.c
index 4b451a7..be90d35 100644 (file)
--- a/drivers/net/cnic.c
+++ b/drivers/net/cnic.c
@@ -1143,12 +1143,12 @@ static int cnic_submit_bnx2_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
 
        spin_lock_bh(&cp->cnic_ulp_lock);
        if (num_wqes > cnic_kwq_avail(cp) &&
-           !(cp->cnic_local_flags & CNIC_LCL_FL_KWQ_INIT)) {
+           !test_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags)) {
                spin_unlock_bh(&cp->cnic_ulp_lock);
                return -EAGAIN;
        }
 
-       cp->cnic_local_flags &= ~CNIC_LCL_FL_KWQ_INIT;
+       clear_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
 
        prod = cp->kwq_prod_idx;
        sw_prod = prod & MAX_KWQ_IDX;
@@ -2092,7 +2092,6 @@ end:
                i += j;
                j = 1;
        }
-       return;
 }
 
 static u16 cnic_bnx2_next_idx(u16 idx)
@@ -2146,17 +2145,56 @@ static int cnic_get_kcqes(struct cnic_dev *dev, u16 hw_prod, u16 *sw_prod)
        return last_cnt;
 }
 
+static int cnic_l2_completion(struct cnic_local *cp)
+{
+       u16 hw_cons, sw_cons;
+       union eth_rx_cqe *cqe, *cqe_ring = (union eth_rx_cqe *)
+                                       (cp->l2_ring + (2 * BCM_PAGE_SIZE));
+       u32 cmd;
+       int comp = 0;
+
+       if (!test_bit(CNIC_F_BNX2X_CLASS, &cp->dev->flags))
+               return 0;
+
+       hw_cons = *cp->rx_cons_ptr;
+       if ((hw_cons & BNX2X_MAX_RCQ_DESC_CNT) == BNX2X_MAX_RCQ_DESC_CNT)
+               hw_cons++;
+
+       sw_cons = cp->rx_cons;
+       while (sw_cons != hw_cons) {
+               u8 cqe_fp_flags;
+
+               cqe = &cqe_ring[sw_cons & BNX2X_MAX_RCQ_DESC_CNT];
+               cqe_fp_flags = cqe->fast_path_cqe.type_error_flags;
+               if (cqe_fp_flags & ETH_FAST_PATH_RX_CQE_TYPE) {
+                       cmd = le32_to_cpu(cqe->ramrod_cqe.conn_and_cmd_data);
+                       cmd >>= COMMON_RAMROD_ETH_RX_CQE_CMD_ID_SHIFT;
+                       if (cmd == RAMROD_CMD_ID_ETH_CLIENT_SETUP ||
+                           cmd == RAMROD_CMD_ID_ETH_HALT)
+                               comp++;
+               }
+               sw_cons = BNX2X_NEXT_RCQE(sw_cons);
+       }
+       return comp;
+}
+
 static void cnic_chk_pkt_rings(struct cnic_local *cp)
 {
        u16 rx_cons = *cp->rx_cons_ptr;
        u16 tx_cons = *cp->tx_cons_ptr;
+       int comp = 0;
 
        if (cp->tx_cons != tx_cons || cp->rx_cons != rx_cons) {
+               if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
+                       comp = cnic_l2_completion(cp);
+
                cp->tx_cons = tx_cons;
                cp->rx_cons = rx_cons;
 
                uio_event_notify(cp->cnic_uinfo);
        }
+       if (comp)
+               clear_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
 }
 
 static int cnic_service_bnx2(void *data, void *status_blk)
@@ -2325,7 +2363,6 @@ done:
                           status_idx, IGU_INT_ENABLE, 1);
 
        cp->kcq_prod_idx = sw_prod;
-       return;
 }
 
 static int cnic_service_bnx2x(void *data, void *status_blk)
@@ -3692,7 +3729,7 @@ static int cnic_start_bnx2_hw(struct cnic_dev *dev)
        cp->max_kwq_idx = MAX_KWQ_IDX;
        cp->kwq_prod_idx = 0;
        cp->kwq_con_idx = 0;
-       cp->cnic_local_flags |= CNIC_LCL_FL_KWQ_INIT;
+       set_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
 
        if (CHIP_NUM(cp) == CHIP_NUM_5706 || CHIP_NUM(cp) == CHIP_NUM_5708)
                cp->kwq_con_idx_ptr = &sblk->status_rx_quick_consumer_index15;
@@ -4170,6 +4207,8 @@ static void cnic_init_rings(struct cnic_dev *dev)
                for (i = 0; i < sizeof(struct ustorm_eth_rx_producers) / 4; i++)
                        CNIC_WR(dev, off + i * 4, ((u32 *) &rx_prods)[i]);
 
+               set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
+
                cnic_init_bnx2x_tx_ring(dev);
                cnic_init_bnx2x_rx_ring(dev);
 
@@ -4177,6 +4216,15 @@ static void cnic_init_rings(struct cnic_dev *dev)
                l5_data.phy_address.hi = 0;
                cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CLIENT_SETUP,
                        BNX2X_ISCSI_L2_CID, ETH_CONNECTION_TYPE, &l5_data);
+               i = 0;
+               while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) &&
+                      ++i < 10)
+                       msleep(1);
+
+               if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
+                       netdev_err(dev->netdev,
+                               "iSCSI CLIENT_SETUP did not complete\n");
+               cnic_kwq_completion(dev, 1);
                cnic_ring_ctl(dev, BNX2X_ISCSI_L2_CID, cli, 1);
        }
 }
@@ -4189,14 +4237,25 @@ static void cnic_shutdown_rings(struct cnic_dev *dev)
                struct cnic_local *cp = dev->cnic_priv;
                u32 cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp));
                union l5cm_specific_data l5_data;
+               int i;
 
                cnic_ring_ctl(dev, BNX2X_ISCSI_L2_CID, cli, 0);
 
+               set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
+
                l5_data.phy_address.lo = cli;
                l5_data.phy_address.hi = 0;
                cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_HALT,
                        BNX2X_ISCSI_L2_CID, ETH_CONNECTION_TYPE, &l5_data);
-               msleep(10);
+               i = 0;
+               while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) &&
+                      ++i < 10)
+                       msleep(1);
+
+               if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
+                       netdev_err(dev->netdev,
+                               "iSCSI CLIENT_HALT did not complete\n");
+               cnic_kwq_completion(dev, 1);
 
                memset(&l5_data, 0, sizeof(l5_data));
                cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CFC_DEL,
@@ -4317,7 +4376,15 @@ static void cnic_stop_hw(struct cnic_dev *dev)
 {
        if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
                struct cnic_local *cp = dev->cnic_priv;
+               int i = 0;
 
+               /* Need to wait for the ring shutdown event to complete
+                * before clearing the CNIC_UP flag.
+                */
+               while (cp->uio_dev != -1 && i < 15) {
+                       msleep(100);
+                       i++;
+               }
                clear_bit(CNIC_F_CNIC_UP, &dev->flags);
                rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], NULL);
                synchronize_rcu();
@@ -4628,7 +4695,6 @@ static void __exit cnic_exit(void)
 {
        unregister_netdevice_notifier(&cnic_netdev_notifier);
        cnic_release();
-       return;
 }
 
 module_init(cnic_init);