qlcnic: cleanup dma mask setting

Device support 64 bit dma mask.

Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/qlcnic/qlcnic.h b/drivers/net/qlcnic/qlcnic.h
index cfedcbd..189453f 100644 (file)
--- a/drivers/net/qlcnic/qlcnic.h
+++ b/drivers/net/qlcnic/qlcnic.h
@@ -924,7 +924,6 @@ struct qlcnic_adapter {
        u8 driver_mismatch;
        u8 msix_supported;
        u8 rx_csum;
-       u8 pci_using_dac;
        u8 portnum;
        u8 physical_port;
 

diff --git a/drivers/net/qlcnic/qlcnic_main.c b/drivers/net/qlcnic/qlcnic_main.c
index bd6730e..a3d010a 100644 (file)
--- a/drivers/net/qlcnic/qlcnic_main.c
+++ b/drivers/net/qlcnic/qlcnic_main.c
@@ -241,66 +241,6 @@ static void qlcnic_clear_stats(struct qlcnic_adapter *adapter)
        memset(&adapter->stats, 0, sizeof(adapter->stats));
 }
 
-static int qlcnic_set_dma_mask(struct qlcnic_adapter *adapter)
-{
-       struct pci_dev *pdev = adapter->pdev;
-       u64 mask, cmask;
-
-       adapter->pci_using_dac = 0;
-
-       mask = DMA_BIT_MASK(39);
-       cmask = mask;
-
-       if (pci_set_dma_mask(pdev, mask) == 0 &&
-                       pci_set_consistent_dma_mask(pdev, cmask) == 0) {
-               adapter->pci_using_dac = 1;
-               return 0;
-       }
-
-       return -EIO;
-}
-
-/* Update addressable range if firmware supports it */
-static int
-qlcnic_update_dma_mask(struct qlcnic_adapter *adapter)
-{
-       int change, shift, err;
-       u64 mask, old_mask, old_cmask;
-       struct pci_dev *pdev = adapter->pdev;
-
-       change = 0;
-
-       shift = QLCRD32(adapter, CRB_DMA_SHIFT);
-       if (shift > 32)
-               return 0;
-
-       if (shift > 9)
-               change = 1;
-
-       if (change) {
-               old_mask = pdev->dma_mask;
-               old_cmask = pdev->dev.coherent_dma_mask;
-
-               mask = DMA_BIT_MASK(32+shift);
-
-               err = pci_set_dma_mask(pdev, mask);
-               if (err)
-                       goto err_out;
-
-               err = pci_set_consistent_dma_mask(pdev, mask);
-               if (err)
-                       goto err_out;
-               dev_info(&pdev->dev, "using %d-bit dma mask\n", 32+shift);
-       }
-
-       return 0;
-
-err_out:
-       pci_set_dma_mask(pdev, old_mask);
-       pci_set_consistent_dma_mask(pdev, old_cmask);
-       return err;
-}
-
 static void qlcnic_set_port_mode(struct qlcnic_adapter *adapter)
 {
        u32 val, data;
@@ -644,10 +584,6 @@ qlcnic_start_firmware(struct qlcnic_adapter *adapter)
 {
        int val, err, first_boot;
 
-       err = qlcnic_set_dma_mask(adapter);
-       if (err)
-               return err;
-
        err = qlcnic_can_start_firmware(adapter);
        if (err < 0)
                return err;
@@ -698,8 +634,6 @@ wait_init:
 
        QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_READY);
 
-       qlcnic_update_dma_mask(adapter);
-
        qlcnic_check_options(adapter);
 
        adapter->need_fw_reset = 0;
@@ -1025,7 +959,7 @@ qlcnic_reset_context(struct qlcnic_adapter *adapter)
 
 static int
 qlcnic_setup_netdev(struct qlcnic_adapter *adapter,
-               struct net_device *netdev)
+               struct net_device *netdev, u8 pci_using_dac)
 {
        int err;
        struct pci_dev *pdev = adapter->pdev;
@@ -1048,7 +982,7 @@ qlcnic_setup_netdev(struct qlcnic_adapter *adapter,
        netdev->features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
        netdev->vlan_features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
 
-       if (adapter->pci_using_dac) {
+       if (pci_using_dac) {
                netdev->features |= NETIF_F_HIGHDMA;
                netdev->vlan_features |= NETIF_F_HIGHDMA;
        }
@@ -1078,6 +1012,22 @@ qlcnic_setup_netdev(struct qlcnic_adapter *adapter,
        return 0;
 }
 
+static int qlcnic_set_dma_mask(struct pci_dev *pdev, u8 *pci_using_dac)
+{
+       if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) &&
+                       !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)))
+               *pci_using_dac = 1;
+       else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) &&
+                       !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)))
+               *pci_using_dac = 0;
+       else {
+               dev_err(&pdev->dev, "Unable to set DMA mask, aborting\n");
+               return -EIO;
+       }
+
+       return 0;
+}
+
 static int __devinit
 qlcnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 {
@@ -1086,6 +1036,7 @@ qlcnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
        int err;
        int pci_func_id = PCI_FUNC(pdev->devfn);
        uint8_t revision_id;
+       uint8_t pci_using_dac;
 
        err = pci_enable_device(pdev);
        if (err)
@@ -1096,6 +1047,10 @@ qlcnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
                goto err_out_disable_pdev;
        }
 
+       err = qlcnic_set_dma_mask(pdev, &pci_using_dac);
+       if (err)
+               goto err_out_disable_pdev;
+
        err = pci_request_regions(pdev, qlcnic_driver_name);
        if (err)
                goto err_out_disable_pdev;
@@ -1153,7 +1108,7 @@ qlcnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 
        qlcnic_setup_intr(adapter);
 
-       err = qlcnic_setup_netdev(adapter, netdev);
+       err = qlcnic_setup_netdev(adapter, netdev, pci_using_dac);
        if (err)
                goto err_out_disable_msi;