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Date: Thu, 13 May 2010 06:07:45 -0700
From: Amit Kumar Salecha <amit.salecha@...gic.com>
To: davem@...emloft.net
Cc: netdev@...r.kernel.org, ameen.rahman@...gic.com
Subject: [PATCH NEXT 4/9] qlcnic: cleanup dma mask setting
Device support 64 bit dma mask.
Signed-off-by: Amit Kumar Salecha <amit.salecha@...gic.com>
---
drivers/net/qlcnic/qlcnic.h | 1 -
drivers/net/qlcnic/qlcnic_main.c | 93 ++++++++++----------------------------
2 files changed, 24 insertions(+), 70 deletions(-)
diff --git a/drivers/net/qlcnic/qlcnic.h b/drivers/net/qlcnic/qlcnic.h
index cfedcbd..189453f 100644
--- 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 4652c7b..f10ea32 100644
--- a/drivers/net/qlcnic/qlcnic_main.c
+++ b/drivers/net/qlcnic/qlcnic_main.c
@@ -242,66 +242,6 @@ static void qlcnic_clear_stats(struct qlcnic_adapter *adapter)
return;
}
-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;
@@ -645,10 +585,6 @@ 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;
@@ -699,8 +635,6 @@ 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;
@@ -1026,7 +960,7 @@ 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;
@@ -1049,7 +983,7 @@ 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;
}
@@ -1079,6 +1013,22 @@ 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)
{
@@ -1087,6 +1037,7 @@ 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)
@@ -1097,6 +1048,10 @@ 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;
@@ -1154,7 +1109,7 @@ 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;
--
1.6.0.2
--
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