diff options
| author | Michael Chan | 2007-05-03 13:19:18 -0700 |
|---|---|---|
| committer | David S. Miller | 2007-05-03 13:19:18 -0700 |
| commit | 40453c839fdbf86738256cae1c9c1ebe55645d4a (patch) | |
| tree | 8bd941c3ff4b4ef6df0c43cf1060ddbb5abfa7aa /drivers | |
| parent | 5bae30c96a3bd09563e484b4ac7211b4b4664679 (diff) | |
[BNX2]: Add 40-bit DMA workaround for 5708.
The internal PCIE-to-PCIX bridge of the 5708 has the same 40-bit DMA
limitation as some of the tg3 chips. Set dma_mask and persistent DMA
mask to 40-bit to workaround.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/bnx2.c | 38 | ||||
| -rw-r--r-- | drivers/net/bnx2.h | 1 |
2 files changed, 21 insertions, 18 deletions
diff --git a/drivers/net/bnx2.c b/drivers/net/bnx2.c index 6d05397420f3..679ee669e1e0 100644 --- a/drivers/net/bnx2.c +++ b/drivers/net/bnx2.c @@ -5711,6 +5711,7 @@ bnx2_init_board(struct pci_dev *pdev, struct net_device *dev) unsigned long mem_len; int rc; u32 reg; + u64 dma_mask, persist_dma_mask; SET_MODULE_OWNER(dev); SET_NETDEV_DEV(dev, &pdev->dev); @@ -5749,21 +5750,6 @@ bnx2_init_board(struct pci_dev *pdev, struct net_device *dev) goto err_out_release; } - if (pci_set_dma_mask(pdev, DMA_64BIT_MASK) == 0) { - bp->flags |= USING_DAC_FLAG; - if (pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK) != 0) { - dev_err(&pdev->dev, - "pci_set_consistent_dma_mask failed, aborting.\n"); - rc = -EIO; - goto err_out_release; - } - } - else if (pci_set_dma_mask(pdev, DMA_32BIT_MASK) != 0) { - dev_err(&pdev->dev, "System does not support DMA, aborting.\n"); - rc = -EIO; - goto err_out_release; - } - bp->dev = dev; bp->pdev = pdev; @@ -5805,6 +5791,26 @@ bnx2_init_board(struct pci_dev *pdev, struct net_device *dev) } } + /* 5708 cannot support DMA addresses > 40-bit. */ + if (CHIP_NUM(bp) == CHIP_NUM_5708) + persist_dma_mask = dma_mask = DMA_40BIT_MASK; + else + persist_dma_mask = dma_mask = DMA_64BIT_MASK; + + /* Configure DMA attributes. */ + if (pci_set_dma_mask(pdev, dma_mask) == 0) { + dev->features |= NETIF_F_HIGHDMA; + rc = pci_set_consistent_dma_mask(pdev, persist_dma_mask); + if (rc) { + dev_err(&pdev->dev, + "pci_set_consistent_dma_mask failed, aborting.\n"); + goto err_out_unmap; + } + } else if ((rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK)) != 0) { + dev_err(&pdev->dev, "System does not support DMA, aborting.\n"); + goto err_out_unmap; + } + /* Get bus information. */ reg = REG_RD(bp, BNX2_PCICFG_MISC_STATUS); if (reg & BNX2_PCICFG_MISC_STATUS_PCIX_DET) { @@ -6114,8 +6120,6 @@ bnx2_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) printk("\n"); dev->features |= NETIF_F_SG; - if (bp->flags & USING_DAC_FLAG) - dev->features |= NETIF_F_HIGHDMA; dev->features |= NETIF_F_IP_CSUM; #ifdef BCM_VLAN dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX; diff --git a/drivers/net/bnx2.h b/drivers/net/bnx2.h index 878eee58f12a..8e7b29a3f930 100644 --- a/drivers/net/bnx2.h +++ b/drivers/net/bnx2.h @@ -6433,7 +6433,6 @@ struct bnx2 { #define PCI_32BIT_FLAG 2 #define ONE_TDMA_FLAG 4 /* no longer used */ #define NO_WOL_FLAG 8 -#define USING_DAC_FLAG 0x10 #define USING_MSI_FLAG 0x20 #define ASF_ENABLE_FLAG 0x40 |