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Commit 1bb09fb9 authored by Amit Kumar Salecha's avatar Amit Kumar Salecha Committed by David S. Miller
Browse files

qlcnic: cleanup dma mask setting 



Device support 64 bit dma mask.

Signed-off-by: default avatarAmit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 6edae7a4

drivers/net/qlcnic/qlcnic.h

+0 −1
Original line number Diff line number Diff line
@@ -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;

drivers/net/qlcnic/qlcnic_main.c

+24 −69
Original line number Diff line number Diff line
@@ -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 @@ qlcnic_start_firmware(struct qlcnic_adapter *adapter) 


	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;